Setting up an external Application Load Balancer | Identity-Aware Proxy

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guides" track-metadata-module="primary nav" aria-label="Guides, selected" data-category="Site-Wide Custom Events" data-label="Tab: Guides" track-name="guides" > Guides </a> </tab> <tab > <a href="https://cloud.google.com/iap/docs/apis" class="devsite-tabs-content gc-analytics-event " track-metadata-eventdetail="https://cloud.google.com/iap/docs/apis" track-type="nav" track-metadata-position="nav - reference" track-metadata-module="primary nav" data-category="Site-Wide Custom Events" data-label="Tab: Reference" track-name="reference" > Reference </a> </tab> <tab > <a href="https://cloud.google.com/iap/docs/samples" class="devsite-tabs-content gc-analytics-event " track-metadata-eventdetail="https://cloud.google.com/iap/docs/samples" track-type="nav" track-metadata-position="nav - samples" track-metadata-module="primary nav" data-category="Site-Wide Custom Events" data-label="Tab: Samples" track-name="samples" > Samples </a> </tab> <tab > <a href="https://cloud.google.com/iap/docs/support" class="devsite-tabs-content gc-analytics-event " track-metadata-eventdetail="https://cloud.google.com/iap/docs/support" track-type="nav" track-metadata-position="nav - support" track-metadata-module="primary nav" data-category="Site-Wide Custom Events" data-label="Tab: Support" track-name="support" > Support </a> </tab> <tab > <a href="https://cloud.google.com/iap/docs/resources" class="devsite-tabs-content gc-analytics-event " track-metadata-eventdetail="https://cloud.google.com/iap/docs/resources" track-type="nav" track-metadata-position="nav - resources" track-metadata-module="primary nav" data-category="Site-Wide Custom Events" data-label="Tab: Resources" track-name="resources" > Resources </a> </tab> </nav> </cloudx-tabs-nav> <div class="devsite-product-button-row"> <a href="https://cloud.google.com/contact" class="cta-button-secondary button " data-overflow="devsite-tabs-wrapper" track-name="sales" data-overflow-wrapper="tab" track-metadata-eventDetail="nav" track-type="contact" data-overflow-container="left" track-metadata-position="nav" >Contact Us</a> <a href="//console.cloud.google.com/freetrial" class="cloud-free-trial-button cta-button-primary button-primary button cloud-button cloud-button--primary " track-metadata-eventDetail="nav" track-metadata-position="nav" data-overflow-class="devsite-header-link devsite-top-button button cloud-free-trial-button cloud-free-trial-enabled cloud-button cloud-button--primary" referrerpolicy="no-referrer-when-downgrade" track-type="freeTrial" data-overflow="devsite-top-logo-row" data-overflow-container="right" track-name="gcpCta" >Start free</a> </div> </div> </div> </div> </div> </devsite-header> <devsite-book-nav scrollbars > <div class="devsite-book-nav-filter" > <span class="filter-list-icon material-icons" aria-hidden="true"></span> <input type="text" placeholder="Filter" aria-label="Type to filter" role="searchbox"> <span class="filter-clear-button hidden" data-title="Clear filter" aria-label="Clear filter" role="button" tabindex="0"></span> </div> <nav class="devsite-book-nav devsite-nav nocontent" aria-label="Side menu"> <div class="devsite-mobile-header"> <button type="button" id="devsite-close-nav" class="devsite-header-icon-button button-flat material-icons gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Close navigation" aria-label="Close navigation"> </button> <div class="devsite-product-name-wrapper"> <a href="/" class="devsite-site-logo-link gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Site logo" track-type="globalNav" track-name="googleCloud" track-metadata-position="nav" track-metadata-eventDetail="nav"> <picture> <img src="https://www.gstatic.com/devrel-devsite/prod/v38a693baeb774512feb42f10aac8f755d8791ed41119b5be7a531f8e16f8279f/cloud/images/cloud-logo.svg" class="devsite-site-logo" alt="Google Cloud"> </picture> </a> <span class="devsite-product-name"> <ul class="devsite-breadcrumb-list" > <li class="devsite-breadcrumb-item devsite-has-google-wordmark"> </li> </ul> </span> </div> </div> <div class="devsite-book-nav-wrapper"> <div class="devsite-mobile-nav-top"> <ul class="devsite-nav-list"> <li class="devsite-nav-item"> <a href="/docs" class="devsite-nav-title gc-analytics-event devsite-nav-active" data-category="Site-Wide Custom Events" data-label="Tab: Documentation" track-name="docs-home" track-link-column-type="single-column" data-category="Site-Wide Custom Events" data-label="Responsive Tab: Documentation" track-type="globalNav" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Documentation </span> </a> <ul class="devsite-nav-responsive-tabs"> <li class="devsite-nav-item"> <a href="/iap/docs/quickstarts" class="devsite-nav-title gc-analytics-event devsite-nav-has-children devsite-nav-active" data-category="Site-Wide Custom Events" data-label="Tab: Guides" track-name="guides" data-category="Site-Wide Custom Events" data-label="Responsive Tab: Guides" track-type="globalNav" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip menu="_book"> Guides </span> <span class="devsite-nav-icon material-icons" data-icon="forward" menu="_book"> </span> </a> </li> <li class="devsite-nav-item"> <a href="/iap/docs/apis" class="devsite-nav-title gc-analytics-event devsite-nav-has-children " data-category="Site-Wide Custom Events" data-label="Tab: Reference" track-name="reference" data-category="Site-Wide Custom Events" data-label="Responsive Tab: Reference" track-type="globalNav" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Reference </span> <span class="devsite-nav-icon material-icons" data-icon="forward" > </span> </a> </li> <li class="devsite-nav-item"> <a href="/iap/docs/samples" class="devsite-nav-title gc-analytics-event devsite-nav-has-children " data-category="Site-Wide Custom Events" data-label="Tab: Samples" track-name="samples" data-category="Site-Wide Custom Events" data-label="Responsive Tab: Samples" track-type="globalNav" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Samples </span> <span class="devsite-nav-icon material-icons" data-icon="forward" > </span> </a> </li> <li class="devsite-nav-item"> <a href="/iap/docs/support" class="devsite-nav-title gc-analytics-event devsite-nav-has-children " data-category="Site-Wide Custom Events" data-label="Tab: Support" track-name="support" data-category="Site-Wide Custom Events" data-label="Responsive Tab: Support" track-type="globalNav" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Support </span> <span class="devsite-nav-icon material-icons" data-icon="forward" > </span> </a> </li> <li class="devsite-nav-item"> <a href="/iap/docs/resources" class="devsite-nav-title gc-analytics-event devsite-nav-has-children " data-category="Site-Wide Custom Events" data-label="Tab: Resources" track-name="resources" data-category="Site-Wide Custom Events" data-label="Responsive Tab: Resources" track-type="globalNav" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Resources </span> <span class="devsite-nav-icon material-icons" data-icon="forward" > </span> </a> </li> </ul> </li> <li class="devsite-nav-item"> <a href="/docs/tech-area-overviews" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Tab: Technology areas" track-name="technology-areas" track-link-column-type="single-column" data-category="Site-Wide Custom Events" data-label="Responsive Tab: Technology areas" track-type="globalNav" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Technology areas </span> </a> <ul class="devsite-nav-responsive-tabs devsite-nav-has-menu "> <li class="devsite-nav-item"> <span class="devsite-nav-title" tooltip data-category="Site-Wide Custom Events" data-label="Tab: Technology areas" track-name="technology-areas" track-link-column-type="single-column" > <span class="devsite-nav-text" tooltip menu="Technology areas"> More </span> <span class="devsite-nav-icon material-icons" data-icon="forward" menu="Technology areas"> </span> </span> </li> </ul> </li> <li class="devsite-nav-item"> <a href="/docs/cross-product-overviews" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Tab: Cross-product tools" track-name="crossproduct" track-link-column-type="single-column" data-category="Site-Wide Custom Events" data-label="Responsive Tab: Cross-product tools" track-type="globalNav" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Cross-product tools </span> </a> <ul class="devsite-nav-responsive-tabs devsite-nav-has-menu "> <li class="devsite-nav-item"> <span class="devsite-nav-title" tooltip data-category="Site-Wide Custom Events" data-label="Tab: Cross-product tools" track-name="crossproduct" track-link-column-type="single-column" > <span class="devsite-nav-text" tooltip menu="Cross-product tools"> More </span> <span class="devsite-nav-icon material-icons" data-icon="forward" menu="Cross-product tools"> </span> </span> </li> </ul> </li> <li class="devsite-nav-item"> <a href="/" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Tab: Related sites" track-name="related-sites" track-link-column-type="single-column" data-category="Site-Wide Custom Events" data-label="Responsive Tab: Related sites" track-type="globalNav" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Related sites </span> </a> <ul class="devsite-nav-responsive-tabs devsite-nav-has-menu "> <li class="devsite-nav-item"> <span class="devsite-nav-title" tooltip data-category="Site-Wide Custom Events" data-label="Tab: Related sites" track-name="related-sites" track-link-column-type="single-column" > <span class="devsite-nav-text" tooltip menu="Related sites"> More </span> <span class="devsite-nav-icon material-icons" data-icon="forward" menu="Related sites"> </span> </span> </li> </ul> </li> <li class="devsite-nav-item"> <a href="//console.cloud.google.com/" class="devsite-nav-title gc-analytics-event " track-metadata-eventDetail="nav" track-metadata-position="nav" referrerpolicy="no-referrer-when-downgrade" track-type="globalNav" track-name="console" data-category="Site-Wide Custom Events" data-label="Responsive Tab: Console" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Console </span> </a> </li> <li class="devsite-nav-item"> <a href="/contact" class="cta-button-secondary button" data-overflow="devsite-tabs-wrapper" track-name="sales" data-overflow-wrapper="tab" track-metadata-eventDetail="nav" track-type="contact" data-overflow-container="left" track-metadata-position="nav" data-category="Site-Wide Custom Events" data-label="Responsive Tab: Contact Us" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Contact Us </span> </a> </li> <li class="devsite-nav-item"> <a href="//console.cloud.google.com/freetrial" class="cloud-free-trial-button cta-button-primary button-primary button cloud-button cloud-button--primary" track-metadata-eventDetail="nav" track-metadata-position="nav" data-overflow-class="devsite-header-link devsite-top-button button cloud-free-trial-button cloud-free-trial-enabled cloud-button cloud-button--primary" referrerpolicy="no-referrer-when-downgrade" track-type="freeTrial" data-overflow="devsite-top-logo-row" data-overflow-container="right" track-name="gcpCta" data-category="Site-Wide Custom Events" data-label="Responsive Tab: Start free" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Start free </span> </a> </li> </ul> </div> <div class="devsite-mobile-nav-bottom"> <ul class="devsite-nav-list" menu="_book"> <li class="devsite-nav-item devsite-nav-heading"><div class="devsite-nav-title devsite-nav-title-no-path"> <span class="devsite-nav-text" tooltip>Identity-Aware Proxy</span> </div></li> <li class="devsite-nav-item"><a href="/iap" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /iap" track-type="bookNav" track-name="click" track-metadata-eventdetail="/iap" ><span class="devsite-nav-text" tooltip>Product overview</span></a></li> <li class="devsite-nav-item"><a href="/iap/docs/concepts-overview" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /iap/docs/concepts-overview" track-type="bookNav" track-name="click" track-metadata-eventdetail="/iap/docs/concepts-overview" ><span class="devsite-nav-text" tooltip>Cloud IAP conceptual overview</span></a></li> <li class="devsite-nav-item devsite-nav-heading"><div class="devsite-nav-title devsite-nav-title-no-path"> <span class="devsite-nav-text" tooltip>Quickstarts</span> </div></li> <li class="devsite-nav-item"><a href="/iap/docs/quickstarts" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /iap/docs/quickstarts" track-type="bookNav" track-name="click" track-metadata-eventdetail="/iap/docs/quickstarts" ><span class="devsite-nav-text" tooltip>All quickstarts</span></a></li> <li class="devsite-nav-item"><a href="/iap/docs/authenticate-users-google-accounts" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /iap/docs/authenticate-users-google-accounts" track-type="bookNav" track-name="click" track-metadata-eventdetail="/iap/docs/authenticate-users-google-accounts" ><span class="devsite-nav-text" tooltip>Manage access with Google Accounts</span></a></li> <li class="devsite-nav-item"><a href="/iap/docs/authenticate-users-external-identities" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /iap/docs/authenticate-users-external-identities" track-type="bookNav" track-name="click" track-metadata-eventdetail="/iap/docs/authenticate-users-external-identities" ><span class="devsite-nav-text" tooltip>Manage access with external identities</span></a></li> <li class="devsite-nav-item devsite-nav-heading"><div class="devsite-nav-title devsite-nav-title-no-path"> <span class="devsite-nav-text" tooltip>Samples</span> </div></li> <li class="devsite-nav-item"><a href="/iap/docs/samples" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /iap/docs/samples" track-type="bookNav" track-name="click" track-metadata-eventdetail="/iap/docs/samples" ><span class="devsite-nav-text" tooltip>All Identity-Aware Proxy code samples</span></a></li> <li class="devsite-nav-item"><a href="/docs/samples" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /docs/samples" track-type="bookNav" track-name="click" track-metadata-eventdetail="/docs/samples" ><span class="devsite-nav-text" tooltip>Code samples for all products</span></a></li> <li class="devsite-nav-item devsite-nav-heading"><div class="devsite-nav-title devsite-nav-title-no-path"> <span class="devsite-nav-text" tooltip>How-to guides</span> </div></li> <li class="devsite-nav-item"><a href="/iap/docs/how-to" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /iap/docs/how-to" track-type="bookNav" track-name="click" track-metadata-eventdetail="/iap/docs/how-to" ><span class="devsite-nav-text" tooltip>All how-to guides</span></a></li> <li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Using Google identities</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Enabling Cloud IAP</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/iap/docs/enabling-app-engine" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /iap/docs/enabling-app-engine" track-type="bookNav" track-name="click" track-metadata-eventdetail="/iap/docs/enabling-app-engine" ><span class="devsite-nav-text" tooltip>Enabling Cloud IAP for App Engine</span></a></li><li class="devsite-nav-item"><a href="/iap/docs/enabling-cloud-run" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /iap/docs/enabling-cloud-run" track-type="bookNav" track-name="click" track-metadata-eventdetail="/iap/docs/enabling-cloud-run" ><span class="devsite-nav-text" tooltip>Enabling Cloud IAP for Cloud Run</span></a></li><li class="devsite-nav-item"><a href="/iap/docs/enabling-compute-howto" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /iap/docs/enabling-compute-howto" track-type="bookNav" track-name="click" track-metadata-eventdetail="/iap/docs/enabling-compute-howto" ><span class="devsite-nav-text" tooltip>Enabling Cloud IAP for Compute Engine</span></a></li><li class="devsite-nav-item"><a href="/iap/docs/enabling-kubernetes-howto" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /iap/docs/enabling-kubernetes-howto" track-type="bookNav" track-name="click" track-metadata-eventdetail="/iap/docs/enabling-kubernetes-howto" ><span class="devsite-nav-text" tooltip>Enabling Cloud IAP for Kubernetes Engine</span></a></li><li class="devsite-nav-item"><a href="/iap/docs/enabling-on-prem-howto" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /iap/docs/enabling-on-prem-howto" track-type="bookNav" track-name="click" track-metadata-eventdetail="/iap/docs/enabling-on-prem-howto" ><span class="devsite-nav-text" tooltip>Enabling Cloud IAP for on-premises apps</span></a></li><li class="devsite-nav-item"><a href="/iap/docs/custom-oauth-configuration" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /iap/docs/custom-oauth-configuration" track-type="bookNav" track-name="click" track-metadata-eventdetail="/iap/docs/custom-oauth-configuration" ><span class="devsite-nav-text" tooltip>Customize an OAuth configuration to enable IAP</span></a></li></ul></div></li><li class="devsite-nav-item"><a href="/iap/docs/identity-howto" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /iap/docs/identity-howto" track-type="bookNav" track-name="click" track-metadata-eventdetail="/iap/docs/identity-howto" ><span class="devsite-nav-text" tooltip>Getting the user's identity</span></a></li><li class="devsite-nav-item"><a href="/iap/docs/managing-access" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /iap/docs/managing-access" track-type="bookNav" track-name="click" track-metadata-eventdetail="/iap/docs/managing-access" ><span class="devsite-nav-text" tooltip>Managing user access</span></a></li><li class="devsite-nav-item"><a href="/iap/docs/sessions-howto" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /iap/docs/sessions-howto" track-type="bookNav" track-name="click" track-metadata-eventdetail="/iap/docs/sessions-howto" ><span class="devsite-nav-text" tooltip>Managing sessions</span></a></li><li class="devsite-nav-item"><a href="/iap/docs/sharing-oauth-clients" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /iap/docs/sharing-oauth-clients" track-type="bookNav" track-name="click" track-metadata-eventdetail="/iap/docs/sharing-oauth-clients" ><span class="devsite-nav-text" tooltip>Sharing OAuth clients</span></a></li><li class="devsite-nav-item"><a href="/iap/docs/cloud-iap-context-aware-access-howto" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /iap/docs/cloud-iap-context-aware-access-howto" track-type="bookNav" track-name="click" track-metadata-eventdetail="/iap/docs/cloud-iap-context-aware-access-howto" ><span class="devsite-nav-text" tooltip>Setting up context-aware access</span></a></li><li class="devsite-nav-item"><a href="/iap/docs/authentication-howto" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /iap/docs/authentication-howto" track-type="bookNav" track-name="click" track-metadata-eventdetail="/iap/docs/authentication-howto" ><span class="devsite-nav-text" tooltip>Programmatic authentication</span></a></li><li class="devsite-nav-item"><a href="/iap/docs/programmatic-oauth-clients" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /iap/docs/programmatic-oauth-clients" track-type="bookNav" track-name="click" track-metadata-eventdetail="/iap/docs/programmatic-oauth-clients" ><span class="devsite-nav-text" tooltip>Programmatic OAuth clients</span></a></li><li class="devsite-nav-item"><a href="/iap/docs/using-tcp-forwarding" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /iap/docs/using-tcp-forwarding" track-type="bookNav" track-name="click" track-metadata-eventdetail="/iap/docs/using-tcp-forwarding" ><span class="devsite-nav-text" tooltip>Using Cloud IAP for TCP forwarding</span></a></li><li class="devsite-nav-item"><a href="/iap/docs/tcp-by-host" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /iap/docs/tcp-by-host" track-type="bookNav" track-name="click" track-metadata-eventdetail="/iap/docs/tcp-by-host" ><span class="devsite-nav-text" tooltip>Using IAP TCP forwarding with an IP address or hostname in a Google Cloud or non-Google Cloud environment</span></a></li><li class="devsite-nav-item"><a href="/iap/docs/securing-tcp-with-vpc-sc" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /iap/docs/securing-tcp-with-vpc-sc" track-type="bookNav" track-name="click" track-metadata-eventdetail="/iap/docs/securing-tcp-with-vpc-sc" ><span class="devsite-nav-text" tooltip>Securing Cloud IAP for TCP forwarding with VPC Service Controls</span></a></li></ul></div></li> <li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Use IAP with Identity Platform</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/iap/docs/enable-external-identities" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /iap/docs/enable-external-identities" track-type="bookNav" track-name="click" track-metadata-eventdetail="/iap/docs/enable-external-identities" ><span class="devsite-nav-text" tooltip>Enabling external identities</span></a></li><li class="devsite-nav-item"><a href="/iap/docs/cloud-run-sign-in" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /iap/docs/cloud-run-sign-in" track-type="bookNav" track-name="click" track-metadata-eventdetail="/iap/docs/cloud-run-sign-in" ><span class="devsite-nav-text" tooltip>Hosting a sign-in page with Cloud Run</span></a></li><li class="devsite-nav-item"><a href="/iap/docs/using-firebaseui" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /iap/docs/using-firebaseui" track-type="bookNav" track-name="click" track-metadata-eventdetail="/iap/docs/using-firebaseui" ><span class="devsite-nav-text" tooltip>Creating a sign-in page with FirebaseUI</span></a></li><li class="devsite-nav-item"><a href="/iap/docs/create-custom-auth-ui" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /iap/docs/create-custom-auth-ui" track-type="bookNav" track-name="click" track-metadata-eventdetail="/iap/docs/create-custom-auth-ui" ><span class="devsite-nav-text" tooltip>Creating a custom sign-in page</span></a></li><li class="devsite-nav-item"><a href="/iap/docs/access-external-resources" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /iap/docs/access-external-resources" track-type="bookNav" track-name="click" track-metadata-eventdetail="/iap/docs/access-external-resources" ><span class="devsite-nav-text" tooltip>Accessing non-Google resources programmatically</span></a></li><li class="devsite-nav-item"><a href="/iap/docs/external-identity-sessions" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /iap/docs/external-identity-sessions" track-type="bookNav" track-name="click" track-metadata-eventdetail="/iap/docs/external-identity-sessions" ><span class="devsite-nav-text" tooltip>Managing external identity sessions</span></a></li><li class="devsite-nav-item"><a href="/iap/docs/service-accounts-external-identities" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /iap/docs/service-accounts-external-identities" track-type="bookNav" track-name="click" track-metadata-eventdetail="/iap/docs/service-accounts-external-identities" ><span class="devsite-nav-text" tooltip>Using service accounts with external identities</span></a></li></ul></div></li> <li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Use IAP with Workforce Identity Federation</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/iap/docs/use-workforce-identity-federation" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /iap/docs/use-workforce-identity-federation" track-type="bookNav" track-name="click" track-metadata-eventdetail="/iap/docs/use-workforce-identity-federation" ><span class="devsite-nav-text" tooltip>Configure IAP with Workforce Identity Federation</span></a></li><li class="devsite-nav-item"><a href="/iap/docs/manage-iap-wif-sessions" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /iap/docs/manage-iap-wif-sessions" track-type="bookNav" track-name="click" track-metadata-eventdetail="/iap/docs/manage-iap-wif-sessions" ><span class="devsite-nav-text" tooltip>Manage IAP sessions for Workforce Identity Federation</span></a></li></ul></div></li> <li class="devsite-nav-item devsite-nav-expandable"><div class="devsite-expandable-nav"> <a class="devsite-nav-toggle" aria-hidden="true"></a><div class="devsite-nav-title devsite-nav-title-no-path" tabindex="0" role="button"> <span class="devsite-nav-text" tooltip>Customizing Cloud IAP</span> </div><ul class="devsite-nav-section"><li class="devsite-nav-item"><a href="/iap/docs/customizing" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /iap/docs/customizing" track-type="bookNav" track-name="click" track-metadata-eventdetail="/iap/docs/customizing" ><span class="devsite-nav-text" tooltip>Customizing IAP</span></a></li><li class="devsite-nav-item"><a href="/iap/docs/configuring-reauth" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /iap/docs/configuring-reauth" track-type="bookNav" track-name="click" track-metadata-eventdetail="/iap/docs/configuring-reauth" ><span class="devsite-nav-text" tooltip>IAP reauthentication</span></a></li></ul></div></li> <li class="devsite-nav-item"><a href="/iap/docs/audit-log-howto" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /iap/docs/audit-log-howto" track-type="bookNav" track-name="click" track-metadata-eventdetail="/iap/docs/audit-log-howto" ><span class="devsite-nav-text" tooltip>Enabling Cloud Audit Logging</span></a></li> <li class="devsite-nav-item"><a href="/iap/docs/signed-headers-howto" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /iap/docs/signed-headers-howto" track-type="bookNav" track-name="click" track-metadata-eventdetail="/iap/docs/signed-headers-howto" ><span class="devsite-nav-text" tooltip>Securing your app with signed headers</span></a></li> <li class="devsite-nav-item"><a href="/iap/docs/allowed-domains" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /iap/docs/allowed-domains" track-type="bookNav" track-name="click" track-metadata-eventdetail="/iap/docs/allowed-domains" ><span class="devsite-nav-text" tooltip>Restrict resource access to specific domains</span></a></li> <li class="devsite-nav-item"><a href="/iap/docs/load-balancer-howto" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /iap/docs/load-balancer-howto" track-type="bookNav" track-name="click" track-metadata-eventdetail="/iap/docs/load-balancer-howto" ><span class="devsite-nav-text" tooltip>Setting up an external HTTPS load balancer</span></a></li> <li class="devsite-nav-item"><a href="/iap/docs/saml-attribute-propagation" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /iap/docs/saml-attribute-propagation" track-type="bookNav" track-name="click" track-metadata-eventdetail="/iap/docs/saml-attribute-propagation" ><span class="devsite-nav-text" tooltip>Configure SAML attribute propagation</span></a></li> <li class="devsite-nav-item"><a href="/iap/docs/query-parameters-and-headers-howto" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /iap/docs/query-parameters-and-headers-howto" track-type="bookNav" track-name="click" track-metadata-eventdetail="/iap/docs/query-parameters-and-headers-howto" ><span class="devsite-nav-text" tooltip>Using query parameters and headers</span></a></li> <li class="devsite-nav-item"><a href="/iap/docs/org-policies" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /iap/docs/org-policies" track-type="bookNav" track-name="click" track-metadata-eventdetail="/iap/docs/org-policies" ><span class="devsite-nav-text" tooltip>Using organization policies to control IAP enablement</span></a></li> <li class="devsite-nav-item"><a href="/iap/docs/custom-org-policies" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /iap/docs/custom-org-policies" track-type="bookNav" track-name="click" track-metadata-eventdetail="/iap/docs/custom-org-policies" ><span class="devsite-nav-text" tooltip>Use custom organization policies</span></a></li> <li class="devsite-nav-item"><a href="/iap/docs/force-login" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /iap/docs/force-login" track-type="bookNav" track-name="click" track-metadata-eventdetail="/iap/docs/force-login" ><span class="devsite-nav-text" tooltip>Use IAP as an authentication proxy</span></a></li> <li class="devsite-nav-item devsite-nav-preview"><a href="/iap/docs/auth-policies" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /iap/docs/auth-policies" track-type="bookNav" track-name="click" track-metadata-eventdetail="/iap/docs/auth-policies" ><span class="devsite-nav-text" tooltip>Use authorization policies to delegate authorization to IAP</span><span class="devsite-nav-icon material-icons" data-icon="preview" data-title="Preview" aria-hidden="true"></span></a></li> <li class="devsite-nav-item"><a href="/service-mesh/docs/security/iap-integration" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /service-mesh/docs/security/iap-integration" track-type="bookNav" track-name="click" track-metadata-eventdetail="/service-mesh/docs/security/iap-integration" ><span class="devsite-nav-text" tooltip>Integrating Cloud IAP with Anthos Service Mesh</span></a></li> <li class="devsite-nav-item"><a href="/iap/docs/troubleshooting-opc-setup" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /iap/docs/troubleshooting-opc-setup" track-type="bookNav" track-name="click" track-metadata-eventdetail="/iap/docs/troubleshooting-opc-setup" ><span class="devsite-nav-text" tooltip>Troubleshooting your on-premises connector configuration</span></a></li> <li class="devsite-nav-item devsite-nav-heading"><div class="devsite-nav-title devsite-nav-title-no-path"> <span class="devsite-nav-text" tooltip>Concepts</span> </div></li> <li class="devsite-nav-item"><a href="/iap/docs/concepts" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /iap/docs/concepts" track-type="bookNav" track-name="click" track-metadata-eventdetail="/iap/docs/concepts" ><span class="devsite-nav-text" tooltip>All concepts</span></a></li> <li class="devsite-nav-item"><a href="/iap/docs/concepts-overview" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /iap/docs/concepts-overview" track-type="bookNav" track-name="click" track-metadata-eventdetail="/iap/docs/concepts-overview" ><span class="devsite-nav-text" tooltip>Cloud IAP conceptual overview</span></a></li> <li class="devsite-nav-item"><a href="/iap/docs/cloud-iap-for-on-prem-apps-overview" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /iap/docs/cloud-iap-for-on-prem-apps-overview" track-type="bookNav" track-name="click" track-metadata-eventdetail="/iap/docs/cloud-iap-for-on-prem-apps-overview" ><span class="devsite-nav-text" tooltip>Cloud IAP for on-premises apps</span></a></li> <li class="devsite-nav-item"><a href="/iap/docs/external-identities" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /iap/docs/external-identities" track-type="bookNav" track-name="click" track-metadata-eventdetail="/iap/docs/external-identities" ><span class="devsite-nav-text" tooltip>External identities</span></a></li> <li class="devsite-nav-item"><a href="/iap/docs/tcp-forwarding-overview" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /iap/docs/tcp-forwarding-overview" track-type="bookNav" track-name="click" track-metadata-eventdetail="/iap/docs/tcp-forwarding-overview" ><span class="devsite-nav-text" tooltip>TCP forwarding</span></a></li> <li class="devsite-nav-item"><a href="/iap/docs/concepts-best-practices" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /iap/docs/concepts-best-practices" track-type="bookNav" track-name="click" track-metadata-eventdetail="/iap/docs/concepts-best-practices" ><span class="devsite-nav-text" tooltip>Best practices</span></a></li> <li class="devsite-nav-item devsite-nav-heading"><div class="devsite-nav-title devsite-nav-title-no-path"> <span class="devsite-nav-text" tooltip>Tutorials</span> </div></li> <li class="devsite-nav-item"><a href="/iap/docs/tutorials" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /iap/docs/tutorials" track-type="bookNav" track-name="click" track-metadata-eventdetail="/iap/docs/tutorials" ><span class="devsite-nav-text" tooltip>All tutorials</span></a></li> <li class="devsite-nav-item"><a href="/iap/docs/tutorial-gce" class="devsite-nav-title gc-analytics-event" data-category="Site-Wide Custom Events" data-label="Book nav link, pathname: /iap/docs/tutorial-gce" track-type="bookNav" track-name="click" track-metadata-eventdetail="/iap/docs/tutorial-gce" ><span class="devsite-nav-text" tooltip>Setting up Cloud IAP for Compute Engine</span></a></li> </ul> <ul class="devsite-nav-list" menu="Technology areas" aria-label="Side menu" hidden> <li class="devsite-nav-item"> <a href="/docs/ai-ml" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: AI and ML" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > AI and ML </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/application-development" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Application development" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Application development </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/application-hosting" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Application hosting" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Application hosting </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/compute-area" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Compute" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Compute </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/data" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Data analytics and pipelines" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Data analytics and pipelines </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/databases" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Databases" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Databases </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/dhm-cloud" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Distributed, hybrid, and multicloud" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Distributed, hybrid, and multicloud </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/generative-ai" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Generative AI" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Generative AI </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/industry" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Industry solutions" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Industry solutions </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/networking" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Networking" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Networking </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/observability" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Observability and monitoring" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Observability and monitoring </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/security" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Security" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Security </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/storage" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Storage" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Storage </span> </a> </li> </ul> <ul class="devsite-nav-list" menu="Cross-product tools" aria-label="Side menu" hidden> <li class="devsite-nav-item"> <a href="/docs/access-resources" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Access and resources management" track-type="navMenu" track-metadata-eventDetail="globalMenu" track-metadata-position="nav"> <span class="devsite-nav-text" tooltip > Access and resources management </span> </a> </li> <li class="devsite-nav-item"> <a href="/docs/costs-usage" class="devsite-nav-title gc-analytics-event " data-category="Site-Wide Custom Events" data-label="Responsive Tab: Costs 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<span slot="popout-contents"> Save and categorize content based on your preferences. </span> </devsite-feature-tooltip> <div class="devsite-page-title-meta"><devsite-view-release-notes></devsite-view-release-notes></div> <devsite-toc class="devsite-nav" depth="2" devsite-toc-embedded > </devsite-toc> <div class="devsite-article-body clearfix "> <p>External Application Load Balancers with Identity-Aware Proxy (IAP) are supported with the following backend types:</p> <ul> <li><a href="/compute/docs/instance-groups">Instance groups</a></li> <li><a href="/load-balancing/docs/negs/zonal-neg-concepts">Zonal network endpoint groups (NEGs)</a></li> <li><a href="/load-balancing/docs/negs/serverless-neg-concepts">Serverless NEGs</a>: One or more <a href="/run/docs">Cloud Run</a> services</li> <li><a href="/load-balancing/docs/negs/internet-neg-concepts">Internet NEGs</a>, for endpoints that are outside of Google Cloud (also known as custom origins)</li> <li><a href="/load-balancing/docs/negs/hybrid-neg-concepts">Hybrid Connectivity NEGs</a>, for endpoints that extend beyond Google Cloud, such as on-premises data centers and other public clouds that you can use <a href="/hybrid-connectivity">hybrid connectivity</a> to reach.</li> <li><a href="/load-balancing/docs/negs#psc-neg">Private Service Connect NEG</a>, endpoint that resolves to one of the following: <ul> <li>A Google-managed regional API endpoint</li> <li>A managed service published using Private Service Connect</li> </ul></li> </ul> <aside class="special"><strong>Important:</strong><span> Backend buckets aren't supported with IAP. For serverless backends, see the limitations documented in <a href="/load-balancing/docs/negs/serverless-neg-concepts">Serverless network endpoint groups overview</a>. For all supported use cases, you must follow the instructions in <a href="#enable-iap">Enabling IAP on the external Application Load Balancer</a>.</span></aside> This setup guide shows you how to create an external Application Load Balancer with a <a href="/compute/docs/instance-groups">Compute Engine managed instance group</a> backend with IAP enabled.</p> <p>For general concepts, see the <a href="/load-balancing/docs/https">External Application Load Balancer overview</a>.</p> <p> If you are an existing user of the classic Application Load Balancer, make sure that you review <a href="/load-balancing/docs/https/migrate-to-global">Migration overview</a> when you plan a new deployment with the global external Application Load Balancer. </p> <h2 id="https-topology" data-text="Load balancer topologies" tabindex="-1">Load balancer topologies</h2> <p>For an HTTPS load balancer, you create the configuration shown in the following diagram.</p> <figure style="text-align: center"> <a href="/static/load-balancing/images/https-load-balancer-simple.svg"> <img src="/static/load-balancing/images/https-load-balancer-simple.svg" border="0" width="700" Alt="External Application Load Balancer with a managed instance group (MIG) backend."></a> <figcaption><b>Figure 1.</b> External Application Load Balancer with a managed instance group (MIG) backend (click to enlarge).</figcaption> </figure></p> <p>For an HTTP load balancer, you create the configuration shown in the following diagram.</p> <figure style="text-align: center"> <a href="/static/load-balancing/images/http-load-balancer-simple.svg"> <img src="/static/load-balancing/images/http-load-balancer-simple.svg" border="0" width="700" Alt="External Application Load Balancer with a managed instance group (MIG) backend."></a> <figcaption><b>Figure 2.</b> External Application Load Balancer with a managed instance group (MIG) backend (click to enlarge).</figcaption> </figure> <p>The sequence of events in the diagrams are as follows:</p> <ol> <li>A client sends a content request to the external IPv4 address defined in the <a href="/load-balancing/docs/forwarding-rule-concepts">forwarding rule</a>. </li> <li><p>For an HTTPS load balancer, the forwarding rule directs the request to the <a href="/load-balancing/docs/target-proxies">target HTTPS proxy</a>.</p> <p>For an HTTP load balancer, the forwarding rule directs the request to the <a href="/load-balancing/docs/target-proxies">target HTTP proxy</a>.</p></li> <li><p>The target proxy uses the rule in the <a href="/load-balancing/docs/url-map-concepts">URL map</a> to determine that the single backend service receives all requests.</p></li> <li><p>The load balancer determines that the <a href="/load-balancing/docs/backend-service">backend service</a> has only one instance group and directs the request to a virtual machine (VM) instance in that group.</p></li> <li><p>The VM serves the content requested by the user.</p></li> </ol> <h2 id="before-you-begin" data-text="Before you begin" tabindex="-1">Before you begin</h2> <p>Complete the following steps before you create the load balancer.</p> <h3 id="ssl-cert" data-text="Set up an SSL certificate resource" tabindex="-1">Set up an SSL certificate resource</h3> <p>For an HTTPS load balancer, create an SSL certificate resource as described in the following:</p> <ul> <li><a href="/load-balancing/docs/ssl-certificates/self-managed-certs">Using self-managed SSL certificates</a></li> <li><a href="/load-balancing/docs/ssl-certificates/google-managed-certs">Using Google-managed SSL certificates</a></li> </ul> <p>We recommend using a Google-managed certificate.</p> <p>This example assumes that you already have an SSL certificate resource named <code translate="no" dir="ltr">www-ssl-cert</code>.</p> <aside class="warning"><strong>Warning:</strong><span> Don't use a self-signed certificate for production purposes.</span></aside> <h3 id="set_up_permissions" data-text="Set up permissions" tabindex="-1">Set up permissions</h3> <p>To complete the steps in this guide, you must have permission to create Compute Engine instances, firewall rules, and reserved IP addresses in a project. You must have either a project <a href="/iam/docs/understanding-roles#basic">owner or editor role</a>, or you must have the following <a href="/compute/docs/access/iam">Compute Engine IAM roles</a>.</p> <table> <tr> <th width="55%">Task</th> <th>Required role</th> </tr> <tr> <td>Create instances</td> <td><a href="/compute/docs/access/iam#compute.instanceAdmin">Instance Admin</a> </td> </tr> <tr> <td>Add and remove firewall rules</td> <td><a href="/compute/docs/access/iam#compute.securityAdmin">Security Admin</a> </td> </tr> <tr> <td>Create load balancer components</td> <td><a href="/compute/docs/access/iam#compute.networkAdmin">Network Admin</a> </td> </tr> <tr> <td>Create a project (optional)</td> <td><a href="/resource-manager/docs/creating-managing-projects#creating_a_project">Project Creator</a> </td> </tr> </table> <p>For more information, see the following guides:</p> <ul> <li><a href="/load-balancing/docs/access-control">Access control</a></li> <li><a href="/load-balancing/docs/access-control/iam-conditions">IAM Conditions</a></li> </ul> <h2 id="configure_the_network_and_subnets_2" data-text="Configure the network and subnets" tabindex="-1">Configure the network and subnets</h2> <p>To create the example network and subnet, follow these steps.</p> <div class="ds-selector-tabs" data-ds-scope="code-sample"> <section><h3 id="console" data-text=" Console " tabindex="-1"> Console </h3><ol> <li><p>In the Google Cloud console, go to the <strong>VPC networks</strong> page.</p> <p><a href="https://console.cloud.google.com/networking/networks/list" target="console" class="button button-primary">Go to VPC networks</a> </p></li> <li><p>Click <strong>Create VPC network</strong>.</p></li> <li><p>Enter a <strong>Name</strong> for the network.</p></li> <li><p>For the <strong>Subnet creation mode</strong>, choose <strong>Custom</strong>.</p></li> <li><p>In the <strong>New subnet</strong> section, configure the following fields:</p> <ol> <li>Provide a <strong>Name</strong> for the subnet.</li> <li>Select a <strong>Region</strong>.</li> <li>For <strong>IP stack type</strong>, select <strong>IPv4 (single-stack)</strong>.</li> <li>Enter an <strong>IP address range</strong>. This is the <a href="/vpc/docs/vpc#vpc_networks_and_subnets">primary IPv4 range</a> for the subnet.</li> </ol></li> <li><p>Click <strong>Done</strong>.</p></li> <li><p>To add a subnet in a different region, click <strong>Add subnet</strong> and repeat the previous steps.</p></li> <li><p>Click <strong>Create</strong>.</p></li> </ol></section> <section><h3 id="gcloud" data-text=" gcloud " tabindex="-1"> gcloud </h3><ol> <li><p>Create the custom mode VPC network:</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud compute networks create <var translate="no">NETWORK</var> \ --subnet-mode=custom </pre></devsite-code></li> <li><p>Within the network, create a subnet for backends:</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud compute networks subnets create <var translate="no">SUBNET</var> \ --network=<var translate="no">NETWORK</var> \ --stack-type=IPV4_ONLY \ --range=10.1.2.0/24 \ --region=<var translate="no">REGION</var> </pre></devsite-code> <p>Replace the following:</p> <ul> <li><p><code translate="no" dir="ltr"><var translate="no">NETWORK</var></code>: a name for the VPC network.</p></li> <li><p><code translate="no" dir="ltr"><var translate="no">SUBNET</var></code>: a name for the subnet.</p></li> <li><p><code translate="no" dir="ltr"><var translate="no">REGION</var></code>: the name of the region.</p></li> </ul></li> </ol></section> </div> <h2 id="mig" data-text="Create a managed instance group" tabindex="-1">Create a managed instance group</h2> <p>To set up a load balancer with a Compute Engine backend, your VMs need to be in an instance group. This guide describes how to create a managed instance group with Linux VMs that have Apache running, and then set up load balancing. A managed instance group creates each of its managed instances based on the instance templates that you specify.</p> <p>The managed instance group provides VMs running the backend servers of an external HTTP(S) load balancer. For demonstration purposes, backends serve their own hostnames.</p> <p>Before you create a managed instance group, create an instance template.</p> <div class="ds-selector-tabs" data-ds-scope="code-sample"> <section><h3 id="console_1" data-text=" Console " tabindex="-1"> Console </h3><p> <p>To support <strong>IPv4 traffic</strong>, use the following steps:</p> <ol> <li><p>In the Google Cloud console, go to the <strong>Instance templates</strong> page.</p> <p><a href="https://console.cloud.google.com/compute/instanceTemplates/list" target="console" track-type="tasks" track-name="consoleLink" track-metadata-position="body" track-metadata-end-goal="createInstanceTemplate" class="button button-primary">Go to Instance templates</a> </p></li> <li><p>Click <strong>Create instance template</strong>.</p></li> <li><p>For <strong>Name</strong>, enter <code translate="no" dir="ltr">lb-backend-template</code>.</p></li> <li><p>Ensure that the Boot disk is set to a Debian image, such as <strong>Debian GNU/Linux 10 (buster)</strong>. These instructions use commands that are only available on Debian, such as <code translate="no" dir="ltr">apt-get</code>.</p></li> <li><p>Expand <strong>Advanced options</strong>.</p></li> <li><p>Expand <strong>Networking</strong> and configure the following fields:</p> <ol> <li>For <strong>Network tags</strong>, enter <code translate="no" dir="ltr">allow-health-check</code>.</li> <li>In the <strong>Network interfaces</strong> section, click <span class="material-icons" aria-hidden="true" translate="no">edit</span><strong>Edit</strong> and make the following changes: <ul> <li><strong>Network</strong>: <code translate="no" dir="ltr"><var translate="no">NETWORK</var></code></li> <li><strong>Subnet</strong>: <code translate="no" dir="ltr"><var translate="no">SUBNET</var></code></li> <li><strong>IPv4 traffic</strong>: <strong>IPv4 (single-stack)</strong></li> </ul></li> <li>Click <strong>Done</strong>.</li> </ol></li> <li><p>Expand <strong>Management</strong>. In the <strong>Startup script</strong> field, enter the following script:</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> #! /bin/bash apt-get update apt-get install apache2 -y a2ensite default-ssl a2enmod ssl vm_hostname="$(curl -H "Metadata-Flavor:Google" \ http://metadata.google.internal/computeMetadata/v1/instance/name)" echo "Page served from: $vm_hostname" | \ tee /var/www/html/index.html systemctl restart apache2 </pre></devsite-code></li> <li><p>Click <strong>Create</strong>. </p></li> </ol></section> <section><h3 id="gcloud_1" data-text=" gcloud " tabindex="-1"> gcloud </h3><p> <p>To support <b>IPv4 traffic</b>, run the following command:</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud compute instance-templates create <var translate="no">TEMPLATE_NAME</var> \ --region=<var translate="no">REGION</var> \ --network=<var translate="no">NETWORK</var> \ --subnet=<var translate="no">SUBNET</var> \ --stack-type=IPV4_ONLY \ --tags=allow-health-check \ --image-family=debian-10 \ --image-project=debian-cloud \ --metadata=startup-script='#! /bin/bash apt-get update apt-get install apache2 -y a2ensite default-ssl a2enmod ssl vm_hostname="$(curl -H "Metadata-Flavor:Google" \ http://metadata.google.internal/computeMetadata/v1/instance/name)" echo "Page served from: $vm_hostname" | \ tee /var/www/html/index.html systemctl restart apache2' </pre></devsite-code> </section> <section><h3 id="terraform" data-text=" Terraform " tabindex="-1"> Terraform </h3><p>To create the instance template, use the <a href="https://registry.terraform.io/providers/hashicorp/google/latest/docs/resources/compute_instance_template"><code translate="no" dir="ltr">google_compute_instance_template</code> resource</a>.</p> <div class="github-docwidget-gitinclude-code"> <div></div><devsite-code><pre suppresswarning="suppresswarning" translate="no" class="devsite-click-to-copy" track-metadata-position="terraform-google-modules/terraform-docs-samples/lb/external_http_lb_mig_backend/main.tf/HEAD/cloudloadbalancing_ext_http_gce_instance_template" data-code-snippet="true" data-github-includecode-link="https://github.com/terraform-google-modules/terraform-docs-samples/blob/HEAD/lb/external_http_lb_mig_backend/main.tf" feedback-context="{"language": "terraform", "region_tag": "cloudloadbalancing_ext_http_gce_instance_template", "snippet_file_url": "https://github.com/terraform-google-modules/terraform-docs-samples/blob/HEAD/lb/external_http_lb_mig_backend/main.tf"}" feedback-product="1634365" feedback-bucket="networking" language="terraform" data-github-path="terraform-google-modules/terraform-docs-samples/lb/external_http_lb_mig_backend/main.tf" data-git-revision="HEAD" data-region-tag="cloudloadbalancing_ext_http_gce_instance_template" dir="ltr" is-upgraded><code translate="no" dir="ltr">resource "google_compute_instance_template" "default" { name = "lb-backend-template" disk { auto_delete = true boot = true device_name = "persistent-disk-0" mode = "READ_WRITE" source_image = "projects/debian-cloud/global/images/family/debian-11" type = "PERSISTENT" } labels = { managed-by-cnrm = "true" } machine_type = "n1-standard-1" metadata = { startup-script = "#! /bin/bash\n sudo apt-get update\n sudo apt-get install apache2 -y\n sudo a2ensite default-ssl\n sudo a2enmod ssl\n vm_hostname=\"$(curl -H \"Metadata-Flavor:Google\" \\\n http://169.254.169.254/computeMetadata/v1/instance/name)\"\n sudo echo \"Page served from: $vm_hostname\" | \\\n tee /var/www/html/index.html\n sudo systemctl restart apache2" } network_interface { access_config { network_tier = "PREMIUM" } network = "global/networks/default" subnetwork = "regions/us-east1/subnetworks/default" } region = "us-east1" scheduling { automatic_restart = true on_host_maintenance = "MIGRATE" provisioning_model = "STANDARD" } service_account { email = "default" scopes = ["https://www.googleapis.com/auth/devstorage.read_only", "https://www.googleapis.com/auth/logging.write", "https://www.googleapis.com/auth/monitoring.write", "https://www.googleapis.com/auth/pubsub", "https://www.googleapis.com/auth/service.management.readonly", "https://www.googleapis.com/auth/servicecontrol", "https://www.googleapis.com/auth/trace.append"] } tags = ["allow-health-check"] }</code></pre></devsite-code> </div> </section> </div> <p>Create the managed instance group and select the instance template.</p> <div class="ds-selector-tabs" data-ds-scope="code-sample"> <section><h3 id="console_2" data-text=" Console " tabindex="-1"> Console </h3><ol> <li><p>In the Google Cloud console, go to the <strong>Instance groups</strong> page.</p> <p><a href="https://console.cloud.google.com/compute/instanceGroups" target="console" track-type="tasks" track-name="consoleLink" track-metadata-position="body" track-metadata-end-goal="createInstanceGroup" class="button button-primary">Go to Instance groups</a> </p></li> <li><p>Click <strong>Create instance group</strong>.</p></li> <li><p>On the left, choose <strong>New managed instance group (stateless)</strong>.</p></li> <li><p>For <strong>Name</strong>, enter <code translate="no" dir="ltr">lb-backend-example</code>.</p></li> <li><p>Under <strong>Location</strong>, select <strong>Single zone</strong>.</p></li> <li><p>For <strong>Region</strong>, select your preferred region.</p></li> <li><p>For <strong>Zone</strong>, select a zone.</p></li> <li><p>Under <strong>Instance template</strong>, select the instance template <code translate="no" dir="ltr">lb-backend-template</code>.</p></li> <li><p>For <strong>Autoscaling mode</strong>, select <strong>On: add and remove instances to the group</strong>.</p> <p>Set <strong>Minimum number of instances</strong> to <code translate="no" dir="ltr">2</code>, and set <strong>Maximum number of instances</strong> to <code translate="no" dir="ltr">2</code> or more.</p></li> <li><p>To create the new instance group, click <strong>Create</strong>.</p></li> </ol></section> <section><h3 id="gcloud_2" data-text=" gcloud " tabindex="-1"> gcloud </h3><ol> <li><p>Create the managed instance group based on the template.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud compute instance-groups managed create lb-backend-example \ --template=<var translate="no">TEMPLATE_NAME</var> --size=2 --zone=<var translate="no">ZONE_A</var> </pre></devsite-code></li> </ol></section> <section><h3 id="terraform_1" data-text=" Terraform " tabindex="-1"> Terraform </h3><p>To create the managed instance group, use the <a href="https://registry.terraform.io/providers/hashicorp/google/latest/docs/resources/compute_instance_group_manager"><code translate="no" dir="ltr">google_compute_instance_group_manager</code> resource</a>.</p> <div class="github-docwidget-gitinclude-code"> <div></div><devsite-code><pre suppresswarning="suppresswarning" translate="no" class="devsite-click-to-copy" track-metadata-position="terraform-google-modules/terraform-docs-samples/lb/external_http_lb_mig_backend/main.tf/HEAD/cloudloadbalancing_ext_http_gce_instance_mig" data-code-snippet="true" data-github-includecode-link="https://github.com/terraform-google-modules/terraform-docs-samples/blob/HEAD/lb/external_http_lb_mig_backend/main.tf" feedback-context="{"language": "terraform", "region_tag": "cloudloadbalancing_ext_http_gce_instance_template", "snippet_file_url": "https://github.com/terraform-google-modules/terraform-docs-samples/blob/HEAD/lb/external_http_lb_mig_backend/main.tf"}" feedback-product="1634365" feedback-bucket="networking" language="terraform" data-github-path="terraform-google-modules/terraform-docs-samples/lb/external_http_lb_mig_backend/main.tf" data-git-revision="HEAD" data-region-tag="cloudloadbalancing_ext_http_gce_instance_mig" dir="ltr" is-upgraded><code translate="no" dir="ltr">resource "google_compute_instance_group_manager" "default" { name = "lb-backend-example" zone = "us-east1-b" named_port { name = "http" port = 80 } version { instance_template = google_compute_instance_template.default.id name = "primary" } base_instance_name = "vm" target_size = 2 }</code></pre></devsite-code> </div> <p>To learn how to apply or remove a Terraform configuration, see <a href="/docs/terraform/basic-commands">Basic Terraform commands</a>.</p></section> </div> <h2 id="named-port" data-text="Add a named port to the instance group" tabindex="-1">Add a named port to the instance group</h2> <p>For your instance group, define an HTTP service and map a port name to the relevant port. The load balancing service forwards traffic to the named port. For more information, see <a href="/load-balancing/docs/backend-service#named_ports">Named ports</a>.</p> <div class="ds-selector-tabs" data-ds-scope="code-sample"> <section><h3 id="console_3" data-text=" Console " tabindex="-1"> Console </h3><ol> <li><p>In the Google Cloud console, go to the <strong>Instance groups</strong> page.</p> <p><a href="https://console.cloud.google.com/compute/instanceGroups" target="console" track-type="tasks" track-name="consoleLink" track-metadata-position="body" track-metadata-end-goal="createInstanceGroup" class="button button-primary">Go to Instance groups</a> </p></li> <li><p>Click <strong>lb-backend-example</strong>.</p></li> <li><p>On the instance group's <strong>Overview</strong> page, click <span class="material-icons" aria-hidden="true" translate="no">edit</span><strong>Edit</strong>.</p></li> <li><p>In the <strong>Port mapping</strong> section, click <strong>Add port</strong>.</p> <ol> <li>For the port name, enter <code translate="no" dir="ltr">http</code>. For the port number, enter <code translate="no" dir="ltr">80</code>.</li> </ol></li> <li><p>Click <strong>Save</strong>.</p></li> </ol></section> <section><h3 id="gcloud_3" data-text=" gcloud " tabindex="-1"> gcloud </h3><p>Use the <a href="/sdk/gcloud/reference/compute/instance-groups/set-named-ports"><code translate="no" dir="ltr">gcloud compute instance-groups set-named-ports</code></a> command.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud compute instance-groups set-named-ports lb-backend-example \ --named-ports http:80 \ --zone <var translate="no">ZONE_A</var> </pre></devsite-code></section> <section><h3 id="terraform_2" data-text=" Terraform " tabindex="-1"> Terraform </h3><p>The <code translate="no" dir="ltr">named_port</code> attribute is included in the <a href="#mig">managed instance group sample</a>.</p></section> </div> <h2 id="firewall" data-text="Configure a firewall rule" tabindex="-1">Configure a firewall rule</h2> <p>In this example, you create the <code translate="no" dir="ltr">fw-allow-health-check</code> firewall rule. This is an ingress rule that allows traffic from the Google Cloud health checking systems (<code translate="no" dir="ltr">130.211.0.0/22</code> and <code translate="no" dir="ltr">35.191.0.0/16</code>). This example uses the target tag <code translate="no" dir="ltr">allow-health-check</code> to identify the VMs.</p> <div class="ds-selector-tabs" data-ds-scope="code-sample"> <section><h3 id="console_4" data-text=" Console " tabindex="-1"> Console </h3><ol> <li><p>In the Google Cloud console, go to the <strong>Firewall policies</strong> page.</p> <p><a href="https://console.cloud.google.com/net-security/firewall-manager/firewall-policies/list" target="console" class="button button-primary">Go to Firewall policies</a> </p></li> <li><p>Click <strong>Create firewall rule</strong> to create the firewall rule.</p></li> <li><p>For <strong>Name</strong>, enter <code translate="no" dir="ltr">fw-allow-health-check</code>.</p></li> <li><p>Select a <strong>Network</strong>.</p></li> <li><p>Under <strong>Targets</strong>, select <strong>Specified target tags</strong>.</p></li> <li><p>Populate the <strong>Target tags</strong> field with <code translate="no" dir="ltr">allow-health-check</code>.</p></li> <li><p>Set <strong>Source filter</strong> to <strong>IPv4 ranges</strong>.</p></li> <li><p>Set <strong>Source IPv4 ranges</strong> to <code translate="no" dir="ltr">130.211.0.0/22</code> and <code translate="no" dir="ltr">35.191.0.0/16</code>.</p></li> <li><p>Under <strong>Protocols and ports</strong>, select <strong>Specified protocols and ports</strong>.</p></li> <li><p>Select the <strong>TCP</strong> checkbox, and then type <code translate="no" dir="ltr">80</code> for the port numbers.</p></li> <li><p>Click <strong>Create</strong>.</p></li> </ol></section> <section><h3 id="gcloud_4" data-text=" gcloud " tabindex="-1"> gcloud </h3><div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud compute firewall-rules create fw-allow-health-check \ --network=<var translate="no">NETWORK</var> \ --action=allow \ --direction=ingress \ --source-ranges=130.211.0.0/22,35.191.0.0/16 \ --target-tags=allow-health-check \ --rules=tcp:80 </pre></devsite-code></section> <section><h3 id="terraform_3" data-text=" Terraform " tabindex="-1"> Terraform </h3><p>To create the firewall rule, use the <a href="https://registry.terraform.io/providers/hashicorp/google/latest/docs/resources/compute_firewall"><code translate="no" dir="ltr">google_compute_firewall</code> resource</a>.</p> <div class="github-docwidget-gitinclude-code"> <div></div><devsite-code><pre suppresswarning="suppresswarning" translate="no" class="devsite-click-to-copy" track-metadata-position="terraform-google-modules/terraform-docs-samples/lb/external_http_lb_mig_backend/main.tf/HEAD/cloudloadbalancing_ext_http_gce_instance_firewall_rule" data-code-snippet="true" data-github-includecode-link="https://github.com/terraform-google-modules/terraform-docs-samples/blob/HEAD/lb/external_http_lb_mig_backend/main.tf" feedback-context="{"language": "terraform", "region_tag": "cloudloadbalancing_ext_http_gce_instance_template", "snippet_file_url": "https://github.com/terraform-google-modules/terraform-docs-samples/blob/HEAD/lb/external_http_lb_mig_backend/main.tf"}" feedback-product="1634365" feedback-bucket="networking" language="terraform" data-github-path="terraform-google-modules/terraform-docs-samples/lb/external_http_lb_mig_backend/main.tf" data-git-revision="HEAD" data-region-tag="cloudloadbalancing_ext_http_gce_instance_firewall_rule" dir="ltr" is-upgraded><code translate="no" dir="ltr">resource "google_compute_firewall" "default" { name = "fw-allow-health-check" direction = "INGRESS" network = "global/networks/default" priority = 1000 source_ranges = ["130.211.0.0/22", "35.191.0.0/16"] target_tags = ["allow-health-check"] allow { ports = ["80"] protocol = "tcp" } }</code></pre></devsite-code> </div> <p>To learn how to apply or remove a Terraform configuration, see <a href="/docs/terraform/basic-commands">Basic Terraform commands</a>.</p></section> </div> <h2 id="ip-address" data-text="Reserve an external IP address" tabindex="-1">Reserve an external IP address</h2> <p>Now that your instances are up and running, set up a <a href="/compute/docs/ip-addresses#externaladdresses">global static external IP address</a> that your customers use to reach your load balancer.</p> <div class="ds-selector-tabs" data-ds-scope="code-sample"> <section><h3 id="console_5" data-text=" Console " tabindex="-1"> Console </h3><ol> <li><p>In the Google Cloud console, go to the <strong>External IP addresses</strong> page.</p> <p><a href="https://console.cloud.google.com/addresses/list" target="console" class="button button-primary">Go to External IP addresses</a> </p></li> <li><p>To reserve an IPv4 address, click <strong>Reserve external static IP address</strong>.</p></li> <li><p>For <strong>Name</strong>, enter <code translate="no" dir="ltr">lb-ipv4-1</code>.</p></li> <li><p>Set <strong>Network Service Tier</strong> to <strong>Premium</strong>.</p></li> <li><p>Set <strong>IP version</strong> to <strong>IPv4</strong>.</p></li> <li><p>Set <strong>Type</strong> to <strong>Global</strong>.</p></li> <li><p>Click <strong>Reserve</strong>.</p></li> </ol></section> <section><h3 id="gcloud_5" data-text=" gcloud " tabindex="-1"> gcloud </h3><div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud compute addresses create lb-ipv4-1 \ --ip-version=IPV4 \ --network-tier=PREMIUM \ --global </pre></devsite-code> <p>Note the IPv4 address that was reserved:</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud compute addresses describe lb-ipv4-1 \ --format="get(address)" \ --global </pre></devsite-code></section> <section><h3 id="terraform_4" data-text=" Terraform " tabindex="-1"> Terraform </h3><p>To reserve the IP address, use the <a href="https://registry.terraform.io/providers/hashicorp/google/latest/docs/resources/compute_global_address"><code translate="no" dir="ltr">google_compute_global_address</code> resource</a>.</p> <div class="github-docwidget-gitinclude-code"> <div></div><devsite-code><pre suppresswarning="suppresswarning" translate="no" class="devsite-click-to-copy" track-metadata-position="terraform-google-modules/terraform-docs-samples/lb/external_http_lb_mig_backend/main.tf/HEAD/cloudloadbalancing_ext_http_gce_instance_ip_address" data-code-snippet="true" data-github-includecode-link="https://github.com/terraform-google-modules/terraform-docs-samples/blob/HEAD/lb/external_http_lb_mig_backend/main.tf" feedback-context="{"language": "terraform", "region_tag": "cloudloadbalancing_ext_http_gce_instance_template", "snippet_file_url": "https://github.com/terraform-google-modules/terraform-docs-samples/blob/HEAD/lb/external_http_lb_mig_backend/main.tf"}" feedback-product="1634365" feedback-bucket="networking" language="terraform" data-github-path="terraform-google-modules/terraform-docs-samples/lb/external_http_lb_mig_backend/main.tf" data-git-revision="HEAD" data-region-tag="cloudloadbalancing_ext_http_gce_instance_ip_address" dir="ltr" is-upgraded><code translate="no" dir="ltr">resource "google_compute_global_address" "default" { name = "lb-ipv4-1" ip_version = "IPV4" }</code></pre></devsite-code> </div> <p>To learn how to apply or remove a Terraform configuration, see <a href="/docs/terraform/basic-commands">Basic Terraform commands</a>.</p></section> </div> <h2 id="load-balancer" data-text="Set up the load balancer" tabindex="-1">Set up the load balancer</h2> <p>In this example, you are using HTTPS (frontend) between the client and the load balancer. For HTTPS, you need one or more <a href="#ssl-cert">SSL certificate resources</a> to configure the proxy. We recommend using a Google-managed certificate.</p> <p>Even if you're using HTTPS on the frontend, you can use HTTP on the backend. Google <a href="/load-balancing/docs/ssl-certificates/encryption-to-the-backends">automatically encrypts traffic between Google Front Ends (GFEs) and your backends</a> that reside within Google Cloud VPC networks.</p> <div class="ds-selector-tabs" data-ds-scope="code-sample"> <section><h3 id="console_6" data-text=" Console " tabindex="-1"> Console </h3> <h4 id="start-your-configuration" data-text="Start your configuration" tabindex="-1">Start your configuration</h4> <ol> <li><p>In the Google Cloud console, go to the <b>Load balancing</b> page.</p> <p><a href="https://console.cloud.google.com/net-services/loadbalancing/list" target="console" class="button button-primary">Go to Load balancing</a></p></li> <li>Click <b>Create load balancer</b>.</li> <li>For <b>Type of load balancer</b>, select <b>Application Load Balancer (HTTP/HTTPS)</b> and click <b>Next</b>.</li> <li>For <b>Public facing or internal</b>, select <b>Public facing (external)</b> and click <b>Next</b>.</li> <li>For <b>Global or single region deployment</b>, select <b>Best for global workloads</b> and click <b>Next</b>.</li> <li>For <b>Load balancer generation</b>, select <b>Classic Application Load Balancer</b> and click <b>Next</b>.</li> <li>Click <b>Configure</b>.</li> </ol> <p><b>Basic configuration</b></p> <p>For the load balancer <b>Name</b>, enter something like <code translate="no" dir="ltr">web-map-https</code> or <code translate="no" dir="ltr">web-map-http</code>.</p> <p><b>Frontend configuration</b> <ol> <li>Click <b>Frontend configuration</b>.</li> <li>Set <b>Protocol</b> to <b>HTTPS</b>.</li> <li>Select <code translate="no" dir="ltr">IPv4</code> for IPv4 traffic. Set <b>IP address</b> to <code translate="no" dir="ltr">lb-ipv4-1</code>, which you created earlier.</li> <li>Set <b>Port</b> to <b>443</b>. </li> <li>Click <b>Certificate</b>, and select your primary SSL certificate. </li> <li>Optional: Create an SSL policy: <ol> <li>In the <b>SSL policy</b> list, select <b>Create a policy</b>.</li> <li>Set the name of the SSL policy to <code translate="no" dir="ltr">my-ssl-policy</code>.</li> <li>For <b>Minimum TLS Version</b>, select <b>TLS 1.0</b>.</li> <li>For <b>Profile</b>, select <b>Modern</b>. The <b>Enabled features</b> and <b>Disabled features</b> are displayed.</li> <li>Click <b>Save</b>.</li></ol> If you have not created any SSL policies, a <a href="/load-balancing/docs/ssl-policies-concepts#default-ssl-policy">default SSL policy</a> is applied. </li> <li> Optional: Select the <b>Enable HTTP to HTTPS Redirect</b> checkbox to enable redirects. <p>Enabling this checkbox creates an additional partial HTTP load balancer that uses the same IP address as your HTTPS load balancer and redirects incoming HTTP requests to your load balancer's HTTPS frontend. </p> <p>This checkbox can only be selected when the HTTPS protocol is selected and a reserved IP address is used. </p> </li> <li>Click <b>Done</b>.</li> </ol></p> <p><b>Backend configuration</b> <ol> <li>Click <b>Backend configuration</b>.</li> <li>Under <b>Create or select backend services & backend buckets</b>, select <b>Backend services > Create a backend service</b>. </li> <li>Add a name for your backend service, such as <code translate="no" dir="ltr">web-backend-service</code>. </li> <li>Under <b>Protocol</b>, select <b>HTTP</b>.</li> <li>For the <b>Named Port</b>, enter <code translate="no" dir="ltr">http</code>.</li> <li>In <b>Backends > New backend > Instance group</b>, select your instance group, <code translate="no" dir="ltr">lb-backend-example</code>. </li> <li>For the <b>Port numbers</b>, enter <code translate="no" dir="ltr">80</code>.</li> <li>Retain the other default settings.</li> <li>Under <b>Health check</b>, select <b>Create a health check</b>, and then add a name for your health check, such as <code translate="no" dir="ltr">http-basic-check</code>. </li> <li>Set the protocol to <b>HTTP</b>, and then click <b>Save</b>. </li> <li> <p>Optional: Configure a default backend security policy. The default security policy throttles traffic over a user-configured threshold. For more information about default security policies, see the <a href="/armor/docs/rate-limiting-overview#default-policies">Rate limiting overview</a>.</p> <ol> <li>To opt out of the Google Cloud Armor default security policy, select <code translate="no" dir="ltr">None</code> in the backend security policy list menu.</li> <li>In the <b>Security</b> section, select <b>Default security policy</b>.</li> <li>In the <b>Policy name</b> field, accept the automatically generated name or enter a name for your security policy.</li> <li>In the <b>Request count</b> field, accept the default request count or enter an integer between <code translate="no" dir="ltr">1</code> and <code translate="no" dir="ltr">10,000</code>.</li> <li>In the <b>Interval</b> field, select an interval.</li> <li>In the <b>Enforce on key</b> field, choose one of the following values: <b>All</b>, <b>IP address</b>, or <b>X-Forwarded-For IP address</b>. For more information about these options, see <a href="/armor/docs/rate-limiting-overview#identifying_clients_for_rate_limiting">Identifying clients for rate limiting</a>.</li> </ol></li> <li>Retain the other default settings.</li> <li>Click <b>Create</b>.</li> </ol></p> <p> <b>Host and path rules</b> <p>For <b>Host and path rules</b>, retain the default settings.</p> </p> <p></p> <p><b>Review and finalize</b> <ol> <li>Click <b>Review and finalize</b>.</li> <li>Review your load balancer configuration settings.</li> <li>Optional: Click <b>Equivalent code</b> to view the REST API request that will be used to create the load balancer.</li> <li>Click <b>Create</b>.</li> </ol></p> <div> <p>Wait for the load balancer to be created.</p> <p> If you created an HTTPS load balancer and selected the <b>Enable HTTP to HTTPS Redirect</b> checkbox, you will also see an HTTP load balancer created with a <em>-redirect</em> suffix. </p> <ol> <li>Click the name of the load balancer.</li> <li>On the <b>Load balancer details</b> screen, note the <b>IP:Port</b> for your load balancer. </li> </ol> </div></section> <section><h3 id="gcloud_6" data-text=" gcloud " tabindex="-1"> gcloud </h3><ol> <li>Create a health check. <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud compute health-checks create http http-basic-check \ --port 80 </pre></devsite-code> </li> <li>Create a backend service. <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud compute backend-services create web-backend-service \ --load-balancing-scheme=EXTERNAL \ --protocol=HTTP \ --port-name=http \ --health-checks=http-basic-check \ --global </pre></devsite-code> </li> <li>Add your instance group as the backend to the backend service. <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud beta compute backend-services add-backend web-backend-service \ --instance-group=lb-backend-example \ --instance-group-zone=<var translate="no">ZONE_A</var> \ --global </pre></devsite-code> </li> <li>For HTTP, create a URL map to route the incoming requests to the default backend service. <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud beta compute url-maps create web-map-http \ --default-service web-backend-service </pre></devsite-code> </li> <li>For HTTPS, create a URL map to route the incoming requests to the default backend service. <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud beta compute url-maps create web-map-https \ --default-service web-backend-service </pre></devsite-code> </li> </ol> <p><b>Set up an HTTPS frontend</b></p> <p>Skip this section for HTTP load balancers.</p> <ol> <li>For HTTPS, if you haven't already done so, create the global SSL certificate resource, as shown in the following sections:</li> <ul> <li><a href="/load-balancing/docs/ssl-certificates/google-managed-certs#create-ssl">Creating a Google-managed SSL certificate resource</a></li> <li><a href="/load-balancing/docs/ssl-certificates/self-managed-certs#createresource">Creating a self-managed SSL certificate resource</a></li> </ul> <li><p>For HTTPS, create a target HTTPS proxy to route requests to your URL map. The proxy is the portion of the load balancer that holds the SSL certificate for an HTTPS load balancer, so you also load your certificate in this step.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud compute target-https-proxies create https-lb-proxy \ --url-map=web-map-https \ --ssl-certificates=www-ssl-cert </pre></devsite-code> </li> <li>For HTTPS, create a global forwarding rule to route incoming requests to the proxy. <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud compute forwarding-rules create https-content-rule \ --load-balancing-scheme=EXTERNAL \ --network-tier=PREMIUM \ --address=lb-ipv4-1 \ --global \ --target-https-proxy=https-lb-proxy \ --ports=443 </pre></devsite-code> </li> <li> Optional: For HTTPS, create a global SSL policy and attach it to the HTTPS proxy. <br /> To create a global SSL policy: <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud compute ssl-policies create my-ssl-policy \ --profile MODERN \ --min-tls-version 1.0 </pre></devsite-code> To attach the SSL policy to the global target HTTPS proxy: <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud compute target-https-proxies update https-lb-proxy \ --ssl-policy my-ssl-policy </pre></devsite-code> </li> </ol> <p><b>Set up an HTTP frontend</b></p> <p>Skip this section for HTTPS load balancers.</p> <ol> <li>For HTTP, create a target HTTP proxy to route requests to your URL map. <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud compute target-http-proxies create http-lb-proxy \ --url-map=web-map-http </pre></devsite-code> </li> <li>For HTTP, create a global forwarding rule to route incoming requests to the proxy. <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud compute forwarding-rules create http-content-rule \ --load-balancing-scheme=EXTERNAL \ --address=lb-ipv4-1 \ --global \ --target-http-proxy=http-lb-proxy \ --ports=80 </pre></devsite-code> </li> </ol></section> <section><h3 id="terraform_5" data-text=" Terraform " tabindex="-1"> Terraform </h3><ol> <li> <p>To create the health check, use the <a href="https://registry.terraform.io/providers/hashicorp/google/latest/docs/resources/compute_health_check"><code translate="no" dir="ltr">google_compute_health_check</code></a> resource.</p> <div class="github-docwidget-gitinclude-code"> <div></div><devsite-code><pre suppresswarning="suppresswarning" translate="no" class="devsite-click-to-copy" track-metadata-position="terraform-google-modules/terraform-docs-samples/lb/external_http_lb_mig_backend/main.tf/HEAD/cloudloadbalancing_ext_http_gce_instance_health_check" data-code-snippet="true" data-github-includecode-link="https://github.com/terraform-google-modules/terraform-docs-samples/blob/HEAD/lb/external_http_lb_mig_backend/main.tf" feedback-context="{"language": "terraform", "region_tag": "cloudloadbalancing_ext_http_gce_instance_template", "snippet_file_url": "https://github.com/terraform-google-modules/terraform-docs-samples/blob/HEAD/lb/external_http_lb_mig_backend/main.tf"}" feedback-product="1634365" feedback-bucket="networking" language="terraform" data-github-path="terraform-google-modules/terraform-docs-samples/lb/external_http_lb_mig_backend/main.tf" data-git-revision="HEAD" data-region-tag="cloudloadbalancing_ext_http_gce_instance_health_check" dir="ltr" is-upgraded><code translate="no" dir="ltr">resource "google_compute_health_check" "default" { name = "http-basic-check" check_interval_sec = 5 healthy_threshold = 2 http_health_check { port = 80 port_specification = "USE_FIXED_PORT" proxy_header = "NONE" request_path = "/" } timeout_sec = 5 unhealthy_threshold = 2 }</code></pre></devsite-code> </div> </li> <li> <p>To create the backend service, use the <a href="https://registry.terraform.io/providers/hashicorp/google/latest/docs/resources/compute_backend_service"><code translate="no" dir="ltr">google_compute_backend_service</code></a> resource.</p> <p>This example uses <code translate="no" dir="ltr">load_balancing_scheme="EXTERNAL_MANAGED"</code>, which sets up a global external Application Load Balancer with <a href="/load-balancing/docs/https/traffic-management-global">advanced traffic management capability</a>. To create a classic Application Load Balancer, make sure you change the <code translate="no" dir="ltr">load_balancing_scheme</code> to <code translate="no" dir="ltr">EXTERNAL</code> before running the script.</p> <div class="github-docwidget-gitinclude-code"> <div></div><devsite-code><pre suppresswarning="suppresswarning" translate="no" class="devsite-click-to-copy" track-metadata-position="terraform-google-modules/terraform-docs-samples/lb/external_http_lb_mig_backend/main.tf/HEAD/cloudloadbalancing_ext_http_gce_instance_backend_service" data-code-snippet="true" data-github-includecode-link="https://github.com/terraform-google-modules/terraform-docs-samples/blob/HEAD/lb/external_http_lb_mig_backend/main.tf" feedback-context="{"language": "terraform", "region_tag": "cloudloadbalancing_ext_http_gce_instance_template", "snippet_file_url": "https://github.com/terraform-google-modules/terraform-docs-samples/blob/HEAD/lb/external_http_lb_mig_backend/main.tf"}" feedback-product="1634365" feedback-bucket="networking" language="terraform" data-github-path="terraform-google-modules/terraform-docs-samples/lb/external_http_lb_mig_backend/main.tf" data-git-revision="HEAD" data-region-tag="cloudloadbalancing_ext_http_gce_instance_backend_service" dir="ltr" is-upgraded><code translate="no" dir="ltr">resource "google_compute_backend_service" "default" { name = "web-backend-service" connection_draining_timeout_sec = 0 health_checks = [google_compute_health_check.default.id] load_balancing_scheme = "EXTERNAL_MANAGED" port_name = "http" protocol = "HTTP" session_affinity = "NONE" timeout_sec = 30 backend { group = google_compute_instance_group_manager.default.instance_group balancing_mode = "UTILIZATION" capacity_scaler = 1.0 } }</code></pre></devsite-code> </div> </li> <li> <p>To create the URL map, use the <a href="https://registry.terraform.io/providers/hashicorp/google/latest/docs/resources/compute_url_map"><code translate="no" dir="ltr">google_compute_url_map</code></a> resource.</p> <div class="github-docwidget-gitinclude-code"> <div></div><devsite-code><pre suppresswarning="suppresswarning" translate="no" class="devsite-click-to-copy" track-metadata-position="terraform-google-modules/terraform-docs-samples/lb/external_http_lb_mig_backend/main.tf/HEAD/cloudloadbalancing_ext_http_gce_instance_url_map" data-code-snippet="true" data-github-includecode-link="https://github.com/terraform-google-modules/terraform-docs-samples/blob/HEAD/lb/external_http_lb_mig_backend/main.tf" feedback-context="{"language": "terraform", "region_tag": "cloudloadbalancing_ext_http_gce_instance_template", "snippet_file_url": "https://github.com/terraform-google-modules/terraform-docs-samples/blob/HEAD/lb/external_http_lb_mig_backend/main.tf"}" feedback-product="1634365" feedback-bucket="networking" language="terraform" data-github-path="terraform-google-modules/terraform-docs-samples/lb/external_http_lb_mig_backend/main.tf" data-git-revision="HEAD" data-region-tag="cloudloadbalancing_ext_http_gce_instance_url_map" dir="ltr" is-upgraded><code translate="no" dir="ltr">resource "google_compute_url_map" "default" { name = "web-map-http" default_service = google_compute_backend_service.default.id }</code></pre></devsite-code> </div> </li> <li> <p>To create the target HTTP proxy, use the <a href="https://registry.terraform.io/providers/hashicorp/google/latest/docs/resources/compute_target_http_proxy"><code translate="no" dir="ltr">google_compute_target_http_proxy</code></a> resource.</p> <div class="github-docwidget-gitinclude-code"> <div></div><devsite-code><pre suppresswarning="suppresswarning" translate="no" class="devsite-click-to-copy" track-metadata-position="terraform-google-modules/terraform-docs-samples/lb/external_http_lb_mig_backend/main.tf/HEAD/cloudloadbalancing_ext_http_gce_instance_target_http_proxy" data-code-snippet="true" data-github-includecode-link="https://github.com/terraform-google-modules/terraform-docs-samples/blob/HEAD/lb/external_http_lb_mig_backend/main.tf" feedback-context="{"language": "terraform", "region_tag": "cloudloadbalancing_ext_http_gce_instance_template", "snippet_file_url": "https://github.com/terraform-google-modules/terraform-docs-samples/blob/HEAD/lb/external_http_lb_mig_backend/main.tf"}" feedback-product="1634365" feedback-bucket="networking" language="terraform" data-github-path="terraform-google-modules/terraform-docs-samples/lb/external_http_lb_mig_backend/main.tf" data-git-revision="HEAD" data-region-tag="cloudloadbalancing_ext_http_gce_instance_target_http_proxy" dir="ltr" is-upgraded><code translate="no" dir="ltr">resource "google_compute_target_http_proxy" "default" { name = "http-lb-proxy" url_map = google_compute_url_map.default.id }</code></pre></devsite-code> </div> </li> <li> <p>To create the forwarding rule, use the <a href="https://registry.terraform.io/providers/hashicorp/google/latest/docs/resources/compute_global_forwarding_rule"><code translate="no" dir="ltr">google_compute_global_forwarding_rule</code></a> resource.</p> <p>This example uses <code translate="no" dir="ltr">load_balancing_scheme="EXTERNAL_MANAGED"</code>, which sets up a global external Application Load Balancer with <a href="/load-balancing/docs/https/traffic-management-global">advanced traffic management capability</a>. To create a classic Application Load Balancer, make sure you change the <code translate="no" dir="ltr">load_balancing_scheme</code> to <code translate="no" dir="ltr">EXTERNAL</code> before running the script.</p> <div class="github-docwidget-gitinclude-code"> <div></div><devsite-code><pre suppresswarning="suppresswarning" translate="no" class="devsite-click-to-copy" track-metadata-position="terraform-google-modules/terraform-docs-samples/lb/external_http_lb_mig_backend/main.tf/HEAD/cloudloadbalancing_ext_http_gce_instance_forwarding_rule" data-code-snippet="true" data-github-includecode-link="https://github.com/terraform-google-modules/terraform-docs-samples/blob/HEAD/lb/external_http_lb_mig_backend/main.tf" feedback-context="{"language": "terraform", "region_tag": "cloudloadbalancing_ext_http_gce_instance_template", "snippet_file_url": "https://github.com/terraform-google-modules/terraform-docs-samples/blob/HEAD/lb/external_http_lb_mig_backend/main.tf"}" feedback-product="1634365" feedback-bucket="networking" language="terraform" data-github-path="terraform-google-modules/terraform-docs-samples/lb/external_http_lb_mig_backend/main.tf" data-git-revision="HEAD" data-region-tag="cloudloadbalancing_ext_http_gce_instance_forwarding_rule" dir="ltr" is-upgraded><code translate="no" dir="ltr">resource "google_compute_global_forwarding_rule" "default" { name = "http-content-rule" ip_protocol = "TCP" load_balancing_scheme = "EXTERNAL_MANAGED" port_range = "80-80" target = google_compute_target_http_proxy.default.id ip_address = google_compute_global_address.default.id }</code></pre></devsite-code> </div> </li> </ol> <p>To learn how to apply or remove a Terraform configuration, see <a href="/docs/terraform/basic-commands">Basic Terraform commands</a>.</p></section> </div> <h3 id="enable-iap" data-text="Enable IAP on the external Application Load Balancer" tabindex="-1">Enable IAP on the external Application Load Balancer</h3> Note: IAP isn't compatible with Cloud CDN. <p>You can configure IAP to be enabled or disabled (default). If enabled, you must provide values for <code translate="no" dir="ltr">oauth2-client-id</code> and <code translate="no" dir="ltr">oauth2-client-secret</code>.</p> <p>To enable IAP, update the backend service to include the <code translate="no" dir="ltr">--iap=enabled</code> flag with the <code translate="no" dir="ltr">oauth2-client-id</code> and <code translate="no" dir="ltr">oauth2-client-secret</code>.</p> <p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud compute backend-services update <var translate="no">BACKEND_SERVICE_NAME</var> \ --iap=enabled,oauth2-client-id=<var translate="no">ID</var>,oauth2-client-secret=<var translate="no">SECRET</var> \ --global </pre></devsite-code> </p> <p>Optionally, you can <a href="/iap/docs/enabling-compute-howto#enabling">enable IAP</a> for a Compute Engine resource by using the Google Cloud console, gcloud CLI, or API.</p> <h2 id="update_dns" data-text="Connect your domain to your load balancer" tabindex="-1">Connect your domain to your load balancer</h2> <p>After the load balancer is created, note the IP address that is associated with the load balancer—for example, <code translate="no" dir="ltr">30.90.80.100</code>. To point your domain to your load balancer, create an <code translate="no" dir="ltr">A</code> record by using your domain registration service. If you added multiple domains to your SSL certificate, you must add an <code translate="no" dir="ltr">A</code> record for each one, all pointing to the load balancer's IP address. For example, to create <code translate="no" dir="ltr">A</code> records for <code translate="no" dir="ltr">www.example.com</code> and <code translate="no" dir="ltr">example.com</code>, use the following:</p> <div></div><devsite-code><pre translate="no" dir="ltr" is-upgraded> NAME TYPE DATA www A 30.90.80.100 @ A 30.90.80.100 </pre></devsite-code> <p>If you use Cloud DNS as your DNS provider, see <a href="/dns/docs/records">Add, modify, and delete records</a>.</p> <h2 id="send-traffic" data-text="Test traffic sent to your instances" tabindex="-1">Test traffic sent to your instances</h2> <p>Now that the load balancing service is running, you can send traffic to the forwarding rule and watch the traffic be dispersed to different instances.</p> <div class="ds-selector-tabs" data-ds-scope="code-sample"> <section><h3 id="console_7" data-text=" Console " tabindex="-1"> Console </h3><ol> <li><p>In the Google Cloud console, go to the <b>Load balancing</b> page.</p> <p><a href="https://console.cloud.google.com/networking/loadbalancing/" target="console" class="button button-primary">Go to Load balancing</a></p></li> <li>Click the load balancer that you just created.</li> <li><p>In the <b>Backend</b> section, confirm that the VMs are healthy. The <b>Healthy</b> column should be populated, indicating that both VMs are healthy (<code translate="no" dir="ltr">2/2</code>). If you see otherwise, first try reloading the page. It can take a few moments for the Google Cloud console to indicate that the VMs are healthy. If the backends do not appear healthy after a few minutes, review the firewall configuration and the network tag assigned to your backend VMs.</p> </li> <li>For HTTPS, if you are using a Google-managed certificate, confirm that your certificate resource's status is ACTIVE. For more information, see <a href="/load-balancing/docs/ssl-certificates/google-managed-certs#certificate-managed-status"> Google-managed SSL certificate resource status</a>.</li> <li>After the Google Cloud console shows that the backend instances are healthy, you can test your load balancer using a web browser by going to <code translate="no" dir="ltr">https://<var translate="no">IP_ADDRESS</var></code> (or <code translate="no" dir="ltr">http://<var translate="no">IP_ADDRESS</var></code>). Replace <code translate="no" dir="ltr"><var translate="no">IP_ADDRESS</var></code> with the <a href="#ip-address">load balancer's IP address</a>.</li> <li>If you used a self-signed certificate for testing HTTPS, your browser displays a warning. You must explicitly instruct your browser to accept a self-signed certificate.</li> <li>Your browser should render a page with content showing the name of the instance that served the page, along with its zone (for example, <code translate="no" dir="ltr">Page served from: lb-backend-example-xxxx</code>). If your browser doesn't render this page, review the configuration settings in this guide.</li> </ol></section> <section><h3 id="gcloud_7" data-text=" gcloud " tabindex="-1"> gcloud </h3><div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> gcloud compute addresses describe lb-ipv4-1 \ --format="get(address)" \ --global </pre></devsite-code> <p>After a few minutes have passed, you can test the setup by running the following <code translate="no" dir="ltr">curl</code> command.</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> curl http://<var translate="no">IP_ADDRESS</var> </pre></devsite-code> <p>-OR-</p> <div></div><devsite-code><pre class="devsite-click-to-copy" translate="no" dir="ltr" is-upgraded> curl https://<var translate="no">HOSTNAME</var> </pre></devsite-code></section> </div> <h2 id="whats_next" data-text="What's next" tabindex="-1">What's next</h2> <ul> <li>Read about <a href="/iap/docs/enabling-kubernetes-howto">enabling Cloud Load Balancing for GKE</a></li> <li>Learn more about <a href="/compute/docs/instance-groups">instance groups</a>.</li> <li>Read about <a href="/compute/docs/load-balancing-and-autoscaling">load balancing and scaling</a>.</li> </ul> <devsite-hats-survey class="nocontent" hats-id="Nd7nTix2o0eU5NUYprb0ThtUc5jf" listnr-id="83405"></devsite-hats-survey> </div> <devsite-thumb-rating position="footer"> </devsite-thumb-rating> <devsite-feedback position="footer" project-name="Identity-Aware Proxy" product-id="1635816" bucket="Documentation" context="" version="t-devsite-webserver-20250211-r00-rc00.466928320959134316" data-label="Send Feedback Button" track-type="feedback" track-name="sendFeedbackLink" track-metadata-position="footer" class="nocontent" project-icon="https://www.gstatic.com/devrel-devsite/prod/v38a693baeb774512feb42f10aac8f755d8791ed41119b5be7a531f8e16f8279f/cloud/images/favicons/onecloud/super_cloud.png" > <button> Send feedback </button> </devsite-feedback> <div class="devsite-floating-action-buttons"> </div> </article> <devsite-content-footer class="nocontent"> <p>Except as otherwise noted, the content of this page is licensed under the <a href="https://creativecommons.org/licenses/by/4.0/">Creative Commons Attribution 4.0 License</a>, and code samples are licensed under the <a href="https://www.apache.org/licenses/LICENSE-2.0">Apache 2.0 License</a>. 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