UptimeRobot Knowledge Hub -

<!DOCTYPE html> <html lang="en-US"> <head> <meta charset="UTF-8"> <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.6.0/css/all.min.css"> <style> @charset "UTF-8"; :root { --wp--preset--font-size--normal: 16px; --wp--preset--font-size--huge: 42px; } </style> <meta name='robots' content='index, follow, max-image-preview:large, max-snippet:-1, max-video-preview:-1' /> <style>img:is([sizes="auto" i], [sizes^="auto," i]) { contain-intrinsic-size: 3000px 1500px }</style> <meta name="viewport" content="width=device-width, initial-scale=1">  <title>UptimeRobot Knowledge Hub -</title> <link rel="canonical" href="https://uptimerobot.com/knowledge-hub/" /> <link rel="next" href="https://uptimerobot.com/knowledge-hub/page/2/" /> <meta property="og:locale" content="en_US" /> <meta property="og:type" content="website" /> <meta property="og:title" content="UptimeRobot Knowledge Hub" /> <meta property="og:url" content="https://uptimerobot.com/knowledge-hub/" /> <meta property="og:site_name" content="UptimeRobot Knowledge Hub" /> <meta name="twitter:card" content="summary_large_image" /> <script type="application/ld+json" class="yoast-schema-graph">{"@context":"https://schema.org","@graph":[{"@type":"CollectionPage","@id":"https://uptimerobot.com/knowledge-hub/","url":"https://uptimerobot.com/knowledge-hub/","name":"UptimeRobot Knowledge Hub -","isPartOf":{"@id":"https://uptimerobot.com/knowledge-hub/#website"},"breadcrumb":{"@id":"https://uptimerobot.com/knowledge-hub/#breadcrumb"},"inLanguage":"en-US"},{"@type":"BreadcrumbList","@id":"https://uptimerobot.com/knowledge-hub/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Knowledge Hub"}]},{"@type":"WebSite","@id":"https://uptimerobot.com/knowledge-hub/#website","url":"https://uptimerobot.com/knowledge-hub/","name":"UptimeRobot Knowledge Hub","description":"","publisher":{"@id":"https://uptimerobot.com/knowledge-hub/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://uptimerobot.com/knowledge-hub/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https://uptimerobot.com/knowledge-hub/#organization","name":"UptimeRobot Knowledge Hub","url":"https://uptimerobot.com/knowledge-hub/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https://uptimerobot.com/knowledge-hub/#/schema/logo/image/","url":"https://uptimerobot.com/knowledge-hub/wp-content/uploads/2024/04/cropped-knowledge-hub-logo.png","contentUrl":"https://uptimerobot.com/knowledge-hub/wp-content/uploads/2024/04/cropped-knowledge-hub-logo.png","width":2000,"height":278,"caption":"UptimeRobot Knowledge Hub"},"image":{"@id":"https://uptimerobot.com/knowledge-hub/#/schema/logo/image/"}}]}</script>  <link rel='dns-prefetch' href='//cdnjs.cloudflare.com' /> <link href='https://fonts.gstatic.com' crossorigin rel='preconnect' /> <link href='https://fonts.googleapis.com' crossorigin rel='preconnect' /> <link rel="alternate" type="application/rss+xml" title="UptimeRobot Knowledge Hub » Feed" href="https://uptimerobot.com/knowledge-hub/feed/" /> <link rel="alternate" type="application/rss+xml" title="UptimeRobot Knowledge Hub » Comments Feed" href="https://uptimerobot.com/knowledge-hub/comments/feed/" /> <script> window._wpemojiSettings = {"baseUrl":"https:\/\/s.w.org\/images\/core\/emoji\/15.0.3\/72x72\/","ext":".png","svgUrl":"https:\/\/s.w.org\/images\/core\/emoji\/15.0.3\/svg\/","svgExt":".svg","source":{"concatemoji":"https:\/\/uptimerobot.com\/knowledge-hub\/wp-includes\/js\/wp-emoji-release.min.js?ver=a25461114d996c2352e4eac39db659a7"}}; /*! This file is auto-generated */ !function(i,n){var o,s,e;function c(e){try{var t={supportTests:e,timestamp:(new Date).valueOf()};sessionStorage.setItem(o,JSON.stringify(t))}catch(e){}}function p(e,t,n){e.clearRect(0,0,e.canvas.width,e.canvas.height),e.fillText(t,0,0);var t=new Uint32Array(e.getImageData(0,0,e.canvas.width,e.canvas.height).data),r=(e.clearRect(0,0,e.canvas.width,e.canvas.height),e.fillText(n,0,0),new Uint32Array(e.getImageData(0,0,e.canvas.width,e.canvas.height).data));return t.every(function(e,t){return e===r[t]})}function u(e,t,n){switch(t){case"flag":return n(e,"\ud83c\udff3\ufe0f\u200d\u26a7\ufe0f","\ud83c\udff3\ufe0f\u200b\u26a7\ufe0f")?!1:!n(e,"\ud83c\uddfa\ud83c\uddf3","\ud83c\uddfa\u200b\ud83c\uddf3")&&!n(e,"\ud83c\udff4\udb40\udc67\udb40\udc62\udb40\udc65\udb40\udc6e\udb40\udc67\udb40\udc7f","\ud83c\udff4\u200b\udb40\udc67\u200b\udb40\udc62\u200b\udb40\udc65\u200b\udb40\udc6e\u200b\udb40\udc67\u200b\udb40\udc7f");case"emoji":return!n(e,"\ud83d\udc26\u200d\u2b1b","\ud83d\udc26\u200b\u2b1b")}return!1}function f(e,t,n){var r="undefined"!=typeof WorkerGlobalScope&&self instanceof WorkerGlobalScope?new OffscreenCanvas(300,150):i.createElement("canvas"),a=r.getContext("2d",{willReadFrequently:!0}),o=(a.textBaseline="top",a.font="600 32px Arial",{});return e.forEach(function(e){o[e]=t(a,e,n)}),o}function t(e){var t=i.createElement("script");t.src=e,t.defer=!0,i.head.appendChild(t)}"undefined"!=typeof Promise&&(o="wpEmojiSettingsSupports",s=["flag","emoji"],n.supports={everything:!0,everythingExceptFlag:!0},e=new Promise(function(e){i.addEventListener("DOMContentLoaded",e,{once:!0})}),new Promise(function(t){var n=function(){try{var e=JSON.parse(sessionStorage.getItem(o));if("object"==typeof e&&"number"==typeof e.timestamp&&(new Date).valueOf()<e.timestamp+604800&&"object"==typeof e.supportTests)return e.supportTests}catch(e){}return null}();if(!n){if("undefined"!=typeof Worker&&"undefined"!=typeof OffscreenCanvas&&"undefined"!=typeof URL&&URL.createObjectURL&&"undefined"!=typeof Blob)try{var e="postMessage("+f.toString()+"("+[JSON.stringify(s),u.toString(),p.toString()].join(",")+"));",r=new Blob([e],{type:"text/javascript"}),a=new Worker(URL.createObjectURL(r),{name:"wpTestEmojiSupports"});return void(a.onmessage=function(e){c(n=e.data),a.terminate(),t(n)})}catch(e){}c(n=f(s,u,p))}t(n)}).then(function(e){for(var t in e)n.supports[t]=e[t],n.supports.everything=n.supports.everything&&n.supports[t],"flag"!==t&&(n.supports.everythingExceptFlag=n.supports.everythingExceptFlag&&n.supports[t]);n.supports.everythingExceptFlag=n.supports.everythingExceptFlag&&!n.supports.flag,n.DOMReady=!1,n.readyCallback=function(){n.DOMReady=!0}}).then(function(){return e}).then(function(){var e;n.supports.everything||(n.readyCallback(),(e=n.source||{}).concatemoji?t(e.concatemoji):e.wpemoji&&e.twemoji&&(t(e.twemoji),t(e.wpemoji)))}))}((window,document),window._wpemojiSettings); </script> <style id='wp-emoji-styles-inline-css'> img.wp-smiley, img.emoji { display: inline !important; border: none !important; box-shadow: none !important; height: 1em !important; width: 1em !important; margin: 0 0.07em !important; vertical-align: -0.1em !important; background: none !important; padding: 0 !important; } </style> <link rel='stylesheet' id='font-awesome-css' href='https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.15.1/css/all.min.css' media='all' /> <style id='classic-theme-styles-inline-css'> /*! This file is auto-generated */ .wp-block-button__link{color:#fff;background-color:#32373c;border-radius:9999px;box-shadow:none;text-decoration:none;padding:calc(.667em + 2px) calc(1.333em + 2px);font-size:1.125em}.wp-block-file__button{background:#32373c;color:#fff;text-decoration:none} </style> <style id='global-styles-inline-css'> :root{--wp--preset--aspect-ratio--square: 1;--wp--preset--aspect-ratio--4-3: 4/3;--wp--preset--aspect-ratio--3-4: 3/4;--wp--preset--aspect-ratio--3-2: 3/2;--wp--preset--aspect-ratio--2-3: 2/3;--wp--preset--aspect-ratio--16-9: 16/9;--wp--preset--aspect-ratio--9-16: 9/16;--wp--preset--color--black: #000000;--wp--preset--color--cyan-bluish-gray: #abb8c3;--wp--preset--color--white: #ffffff;--wp--preset--color--pale-pink: #f78da7;--wp--preset--color--vivid-red: #cf2e2e;--wp--preset--color--luminous-vivid-orange: #ff6900;--wp--preset--color--luminous-vivid-amber: #fcb900;--wp--preset--color--light-green-cyan: #7bdcb5;--wp--preset--color--vivid-green-cyan: #00d084;--wp--preset--color--pale-cyan-blue: #8ed1fc;--wp--preset--color--vivid-cyan-blue: #0693e3;--wp--preset--color--vivid-purple: #9b51e0;--wp--preset--color--contrast: var(--contrast);--wp--preset--color--contrast-2: var(--contrast-2);--wp--preset--color--contrast-3: var(--contrast-3);--wp--preset--color--base: var(--base);--wp--preset--color--base-2: var(--base-2);--wp--preset--color--base-3: var(--base-3);--wp--preset--color--accent: var(--accent);--wp--preset--gradient--vivid-cyan-blue-to-vivid-purple: linear-gradient(135deg,rgba(6,147,227,1) 0%,rgb(155,81,224) 100%);--wp--preset--gradient--light-green-cyan-to-vivid-green-cyan: linear-gradient(135deg,rgb(122,220,180) 0%,rgb(0,208,130) 100%);--wp--preset--gradient--luminous-vivid-amber-to-luminous-vivid-orange: linear-gradient(135deg,rgba(252,185,0,1) 0%,rgba(255,105,0,1) 100%);--wp--preset--gradient--luminous-vivid-orange-to-vivid-red: linear-gradient(135deg,rgba(255,105,0,1) 0%,rgb(207,46,46) 100%);--wp--preset--gradient--very-light-gray-to-cyan-bluish-gray: linear-gradient(135deg,rgb(238,238,238) 0%,rgb(169,184,195) 100%);--wp--preset--gradient--cool-to-warm-spectrum: linear-gradient(135deg,rgb(74,234,220) 0%,rgb(151,120,209) 20%,rgb(207,42,186) 40%,rgb(238,44,130) 60%,rgb(251,105,98) 80%,rgb(254,248,76) 100%);--wp--preset--gradient--blush-light-purple: linear-gradient(135deg,rgb(255,206,236) 0%,rgb(152,150,240) 100%);--wp--preset--gradient--blush-bordeaux: linear-gradient(135deg,rgb(254,205,165) 0%,rgb(254,45,45) 50%,rgb(107,0,62) 100%);--wp--preset--gradient--luminous-dusk: linear-gradient(135deg,rgb(255,203,112) 0%,rgb(199,81,192) 50%,rgb(65,88,208) 100%);--wp--preset--gradient--pale-ocean: linear-gradient(135deg,rgb(255,245,203) 0%,rgb(182,227,212) 50%,rgb(51,167,181) 100%);--wp--preset--gradient--electric-grass: linear-gradient(135deg,rgb(202,248,128) 0%,rgb(113,206,126) 100%);--wp--preset--gradient--midnight: linear-gradient(135deg,rgb(2,3,129) 0%,rgb(40,116,252) 100%);--wp--preset--font-size--small: 13px;--wp--preset--font-size--medium: 20px;--wp--preset--font-size--large: 36px;--wp--preset--font-size--x-large: 42px;--wp--preset--spacing--20: 0.44rem;--wp--preset--spacing--30: 0.67rem;--wp--preset--spacing--40: 1rem;--wp--preset--spacing--50: 1.5rem;--wp--preset--spacing--60: 2.25rem;--wp--preset--spacing--70: 3.38rem;--wp--preset--spacing--80: 5.06rem;--wp--preset--shadow--natural: 6px 6px 9px rgba(0, 0, 0, 0.2);--wp--preset--shadow--deep: 12px 12px 50px rgba(0, 0, 0, 0.4);--wp--preset--shadow--sharp: 6px 6px 0px rgba(0, 0, 0, 0.2);--wp--preset--shadow--outlined: 6px 6px 0px -3px rgba(255, 255, 255, 1), 6px 6px rgba(0, 0, 0, 1);--wp--preset--shadow--crisp: 6px 6px 0px rgba(0, 0, 0, 1);}:where(.is-layout-flex){gap: 0.5em;}:where(.is-layout-grid){gap: 0.5em;}body .is-layout-flex{display: flex;}.is-layout-flex{flex-wrap: wrap;align-items: center;}.is-layout-flex > :is(*, div){margin: 0;}body .is-layout-grid{display: grid;}.is-layout-grid > :is(*, div){margin: 0;}:where(.wp-block-columns.is-layout-flex){gap: 2em;}:where(.wp-block-columns.is-layout-grid){gap: 2em;}:where(.wp-block-post-template.is-layout-flex){gap: 1.25em;}:where(.wp-block-post-template.is-layout-grid){gap: 1.25em;}.has-black-color{color: var(--wp--preset--color--black) !important;}.has-cyan-bluish-gray-color{color: var(--wp--preset--color--cyan-bluish-gray) !important;}.has-white-color{color: var(--wp--preset--color--white) !important;}.has-pale-pink-color{color: var(--wp--preset--color--pale-pink) !important;}.has-vivid-red-color{color: var(--wp--preset--color--vivid-red) !important;}.has-luminous-vivid-orange-color{color: var(--wp--preset--color--luminous-vivid-orange) !important;}.has-luminous-vivid-amber-color{color: var(--wp--preset--color--luminous-vivid-amber) !important;}.has-light-green-cyan-color{color: var(--wp--preset--color--light-green-cyan) !important;}.has-vivid-green-cyan-color{color: var(--wp--preset--color--vivid-green-cyan) !important;}.has-pale-cyan-blue-color{color: var(--wp--preset--color--pale-cyan-blue) !important;}.has-vivid-cyan-blue-color{color: var(--wp--preset--color--vivid-cyan-blue) !important;}.has-vivid-purple-color{color: var(--wp--preset--color--vivid-purple) !important;}.has-black-background-color{background-color: var(--wp--preset--color--black) !important;}.has-cyan-bluish-gray-background-color{background-color: var(--wp--preset--color--cyan-bluish-gray) !important;}.has-white-background-color{background-color: var(--wp--preset--color--white) !important;}.has-pale-pink-background-color{background-color: var(--wp--preset--color--pale-pink) !important;}.has-vivid-red-background-color{background-color: var(--wp--preset--color--vivid-red) !important;}.has-luminous-vivid-orange-background-color{background-color: var(--wp--preset--color--luminous-vivid-orange) !important;}.has-luminous-vivid-amber-background-color{background-color: var(--wp--preset--color--luminous-vivid-amber) !important;}.has-light-green-cyan-background-color{background-color: var(--wp--preset--color--light-green-cyan) !important;}.has-vivid-green-cyan-background-color{background-color: var(--wp--preset--color--vivid-green-cyan) !important;}.has-pale-cyan-blue-background-color{background-color: var(--wp--preset--color--pale-cyan-blue) !important;}.has-vivid-cyan-blue-background-color{background-color: var(--wp--preset--color--vivid-cyan-blue) !important;}.has-vivid-purple-background-color{background-color: var(--wp--preset--color--vivid-purple) !important;}.has-black-border-color{border-color: var(--wp--preset--color--black) !important;}.has-cyan-bluish-gray-border-color{border-color: var(--wp--preset--color--cyan-bluish-gray) !important;}.has-white-border-color{border-color: var(--wp--preset--color--white) !important;}.has-pale-pink-border-color{border-color: var(--wp--preset--color--pale-pink) !important;}.has-vivid-red-border-color{border-color: var(--wp--preset--color--vivid-red) !important;}.has-luminous-vivid-orange-border-color{border-color: var(--wp--preset--color--luminous-vivid-orange) !important;}.has-luminous-vivid-amber-border-color{border-color: var(--wp--preset--color--luminous-vivid-amber) !important;}.has-light-green-cyan-border-color{border-color: var(--wp--preset--color--light-green-cyan) !important;}.has-vivid-green-cyan-border-color{border-color: var(--wp--preset--color--vivid-green-cyan) !important;}.has-pale-cyan-blue-border-color{border-color: var(--wp--preset--color--pale-cyan-blue) !important;}.has-vivid-cyan-blue-border-color{border-color: var(--wp--preset--color--vivid-cyan-blue) !important;}.has-vivid-purple-border-color{border-color: var(--wp--preset--color--vivid-purple) !important;}.has-vivid-cyan-blue-to-vivid-purple-gradient-background{background: var(--wp--preset--gradient--vivid-cyan-blue-to-vivid-purple) !important;}.has-light-green-cyan-to-vivid-green-cyan-gradient-background{background: var(--wp--preset--gradient--light-green-cyan-to-vivid-green-cyan) !important;}.has-luminous-vivid-amber-to-luminous-vivid-orange-gradient-background{background: var(--wp--preset--gradient--luminous-vivid-amber-to-luminous-vivid-orange) !important;}.has-luminous-vivid-orange-to-vivid-red-gradient-background{background: var(--wp--preset--gradient--luminous-vivid-orange-to-vivid-red) !important;}.has-very-light-gray-to-cyan-bluish-gray-gradient-background{background: var(--wp--preset--gradient--very-light-gray-to-cyan-bluish-gray) !important;}.has-cool-to-warm-spectrum-gradient-background{background: var(--wp--preset--gradient--cool-to-warm-spectrum) !important;}.has-blush-light-purple-gradient-background{background: var(--wp--preset--gradient--blush-light-purple) !important;}.has-blush-bordeaux-gradient-background{background: var(--wp--preset--gradient--blush-bordeaux) !important;}.has-luminous-dusk-gradient-background{background: var(--wp--preset--gradient--luminous-dusk) !important;}.has-pale-ocean-gradient-background{background: var(--wp--preset--gradient--pale-ocean) !important;}.has-electric-grass-gradient-background{background: var(--wp--preset--gradient--electric-grass) !important;}.has-midnight-gradient-background{background: var(--wp--preset--gradient--midnight) !important;}.has-small-font-size{font-size: var(--wp--preset--font-size--small) !important;}.has-medium-font-size{font-size: var(--wp--preset--font-size--medium) !important;}.has-large-font-size{font-size: var(--wp--preset--font-size--large) !important;}.has-x-large-font-size{font-size: var(--wp--preset--font-size--x-large) !important;} :where(.wp-block-post-template.is-layout-flex){gap: 1.25em;}:where(.wp-block-post-template.is-layout-grid){gap: 1.25em;} :where(.wp-block-columns.is-layout-flex){gap: 2em;}:where(.wp-block-columns.is-layout-grid){gap: 2em;} :root :where(.wp-block-pullquote){font-size: 1.5em;line-height: 1.6;} </style> <link rel='stylesheet' id='uptimerobot-styles-css' href='https://uptimerobot.com/knowledge-hub/wp-content/themes/generatepress-child/dist/style.css?ver=1716828113' media='all' /> <link rel='stylesheet' id='child-theme-style-css' href='https://uptimerobot.com/knowledge-hub/wp-content/themes/generatepress-child/style.css?ver=1.0' media='all' /> <link rel='stylesheet' id='generate-style-css' href='https://uptimerobot.com/knowledge-hub/wp-content/themes/generatepress/assets/css/main.min.css?ver=3.4.0' media='all' /> <style id='generate-style-inline-css'> body{background-color:var(--base-2);color:var(--contrast);}a{color:#3bd671;}a{text-decoration:underline;}.entry-title a, .site-branding a, a.button, .wp-block-button__link, .main-navigation a{text-decoration:none;}a:hover, a:focus, a:active{color:#4faa6c;}.grid-container{max-width:2000px;}.wp-block-group__inner-container{max-width:2000px;margin-left:auto;margin-right:auto;}.generate-back-to-top{font-size:20px;border-radius:3px;position:fixed;bottom:30px;right:30px;line-height:40px;width:40px;text-align:center;z-index:10;transition:opacity 300ms ease-in-out;opacity:0.1;transform:translateY(1000px);}.generate-back-to-top__show{opacity:1;transform:translateY(0);}.dropdown-click .main-navigation ul ul{display:none;visibility:hidden;}.dropdown-click .main-navigation ul ul ul.toggled-on{left:0;top:auto;position:relative;box-shadow:none;border-bottom:1px solid rgba(0,0,0,0.05);}.dropdown-click .main-navigation ul ul li:last-child > ul.toggled-on{border-bottom:0;}.dropdown-click .main-navigation ul.toggled-on, .dropdown-click .main-navigation ul li.sfHover > ul.toggled-on{display:block;left:auto;right:auto;opacity:1;visibility:visible;pointer-events:auto;height:auto;overflow:visible;float:none;}.dropdown-click .main-navigation.sub-menu-left .sub-menu.toggled-on, .dropdown-click .main-navigation.sub-menu-left ul li.sfHover > ul.toggled-on{right:0;}.dropdown-click nav ul ul ul{background-color:transparent;}.dropdown-click .widget-area .main-navigation ul ul{top:auto;position:absolute;float:none;width:100%;left:-99999px;}.dropdown-click .widget-area .main-navigation ul ul.toggled-on{position:relative;left:0;right:0;}.dropdown-click .widget-area.sidebar .main-navigation ul li.sfHover ul, .dropdown-click .widget-area.sidebar .main-navigation ul li:hover ul{right:0;left:0;}.dropdown-click .sfHover > a > .dropdown-menu-toggle > .gp-icon svg{transform:rotate(180deg);}:root{--contrast:#222222;--contrast-2:rgba(88,88,97,0);--contrast-3:rgba(180,180,191,0);--base:rgba(240,240,240,0);--base-2:rgba(247,249,250,0);--base-3:#ffffff;--accent:#1e73be;}:root .has-contrast-color{color:var(--contrast);}:root .has-contrast-background-color{background-color:var(--contrast);}:root .has-contrast-2-color{color:var(--contrast-2);}:root .has-contrast-2-background-color{background-color:var(--contrast-2);}:root .has-contrast-3-color{color:var(--contrast-3);}:root .has-contrast-3-background-color{background-color:var(--contrast-3);}:root .has-base-color{color:var(--base);}:root .has-base-background-color{background-color:var(--base);}:root .has-base-2-color{color:var(--base-2);}:root .has-base-2-background-color{background-color:var(--base-2);}:root .has-base-3-color{color:var(--base-3);}:root .has-base-3-background-color{background-color:var(--base-3);}:root .has-accent-color{color:var(--accent);}:root .has-accent-background-color{background-color:var(--accent);}body, button, input, select, textarea{font-family:Roboto, sans-serif;font-weight:400;font-style:normal;}.top-bar{background-color:#636363;color:#ffffff;}.top-bar a{color:#ffffff;}.top-bar a:hover{color:#303030;}.site-header{background-color:#121B26;}.main-title a,.main-title a:hover{color:#3BD671;}.site-description{color:var(--contrast-2);}.main-navigation,.main-navigation ul ul{background-color:var(--base-3);}.main-navigation .main-nav ul li a, .main-navigation .menu-toggle, .main-navigation .menu-bar-items{color:var(--contrast);}.main-navigation .main-nav ul li:not([class*="current-menu-"]):hover > a, .main-navigation .main-nav ul li:not([class*="current-menu-"]):focus > a, .main-navigation .main-nav ul li.sfHover:not([class*="current-menu-"]) > a, .main-navigation .menu-bar-item:hover > a, .main-navigation .menu-bar-item.sfHover > a{color:var(--accent);}button.menu-toggle:hover,button.menu-toggle:focus{color:var(--contrast);}.main-navigation .main-nav ul li[class*="current-menu-"] > a{color:var(--accent);}.navigation-search input[type="search"],.navigation-search input[type="search"]:active, .navigation-search input[type="search"]:focus, .main-navigation .main-nav ul li.search-item.active > a, .main-navigation .menu-bar-items .search-item.active > a{color:var(--accent);}.main-navigation ul ul{background-color:var(--base);}.separate-containers .inside-article, .separate-containers .comments-area, .separate-containers .page-header, .one-container .container, .separate-containers .paging-navigation, .inside-page-header{background-color:var(--base-3);}.entry-title a{color:var(--contrast);}.entry-title a:hover{color:var(--contrast-2);}.entry-meta{color:var(--contrast-2);}.sidebar .widget{background-color:var(--base-3);}.footer-widgets{background-color:var(--base-3);}.site-info{background-color:var(--base-3);}input[type="text"],input[type="email"],input[type="url"],input[type="password"],input[type="search"],input[type="tel"],input[type="number"],textarea,select{color:var(--contrast);background-color:var(--base-2);border-color:var(--base);}input[type="text"]:focus,input[type="email"]:focus,input[type="url"]:focus,input[type="password"]:focus,input[type="search"]:focus,input[type="tel"]:focus,input[type="number"]:focus,textarea:focus,select:focus{color:var(--contrast);background-color:var(--base-2);border-color:var(--contrast-3);}button,html input[type="button"],input[type="reset"],input[type="submit"],a.button,a.wp-block-button__link:not(.has-background){color:#ffffff;background-color:#3BD671;}button:hover,html input[type="button"]:hover,input[type="reset"]:hover,input[type="submit"]:hover,a.button:hover,button:focus,html input[type="button"]:focus,input[type="reset"]:focus,input[type="submit"]:focus,a.button:focus,a.wp-block-button__link:not(.has-background):active,a.wp-block-button__link:not(.has-background):focus,a.wp-block-button__link:not(.has-background):hover{color:#ffffff;background-color:#5ebb7c;}a.generate-back-to-top{background-color:rgba( 0,0,0,0.4 );color:#ffffff;}a.generate-back-to-top:hover,a.generate-back-to-top:focus{background-color:rgba( 0,0,0,0.6 );color:#ffffff;}:root{--gp-search-modal-bg-color:var(--base-3);--gp-search-modal-text-color:var(--contrast);--gp-search-modal-overlay-bg-color:rgba(0,0,0,0.2);}@media (max-width:768px){.main-navigation .menu-bar-item:hover > a, .main-navigation .menu-bar-item.sfHover > a{background:none;color:var(--contrast);}}.nav-below-header .main-navigation .inside-navigation.grid-container, .nav-above-header .main-navigation .inside-navigation.grid-container{padding:0px 20px 0px 20px;}.site-main .wp-block-group__inner-container{padding:40px;}.separate-containers .paging-navigation{padding-top:20px;padding-bottom:20px;}.entry-content .alignwide, body:not(.no-sidebar) .entry-content .alignfull{margin-left:-40px;width:calc(100% + 80px);max-width:calc(100% + 80px);}.rtl .menu-item-has-children .dropdown-menu-toggle{padding-left:20px;}.rtl .main-navigation .main-nav ul li.menu-item-has-children > a{padding-right:20px;}@media (max-width:768px){.separate-containers .inside-article, .separate-containers .comments-area, .separate-containers .page-header, .separate-containers .paging-navigation, .one-container .site-content, .inside-page-header{padding:30px;}.site-main .wp-block-group__inner-container{padding:30px;}.inside-top-bar{padding-right:30px;padding-left:30px;}.inside-header{padding-right:30px;padding-left:30px;}.widget-area .widget{padding-top:30px;padding-right:30px;padding-bottom:30px;padding-left:30px;}.footer-widgets-container{padding-top:30px;padding-right:30px;padding-bottom:30px;padding-left:30px;}.inside-site-info{padding-right:30px;padding-left:30px;}.entry-content .alignwide, body:not(.no-sidebar) .entry-content .alignfull{margin-left:-30px;width:calc(100% + 60px);max-width:calc(100% + 60px);}.one-container .site-main .paging-navigation{margin-bottom:20px;}}/* End cached CSS */.is-right-sidebar{width:25%;}.is-left-sidebar{width:25%;}.site-content .content-area{width:50%;}@media (max-width:768px){.main-navigation .menu-toggle,.sidebar-nav-mobile:not(#sticky-placeholder){display:block;}.main-navigation ul,.gen-sidebar-nav,.main-navigation:not(.slideout-navigation):not(.toggled) .main-nav > ul,.has-inline-mobile-toggle #site-navigation .inside-navigation > *:not(.navigation-search):not(.main-nav){display:none;}.nav-align-right .inside-navigation,.nav-align-center .inside-navigation{justify-content:space-between;}.has-inline-mobile-toggle .mobile-menu-control-wrapper{display:flex;flex-wrap:wrap;}.has-inline-mobile-toggle .inside-header{flex-direction:row;text-align:left;flex-wrap:wrap;}.has-inline-mobile-toggle .header-widget,.has-inline-mobile-toggle #site-navigation{flex-basis:100%;}.nav-float-left .has-inline-mobile-toggle #site-navigation{order:10;}} </style> <link rel='stylesheet' id='generate-child-css' href='https://uptimerobot.com/knowledge-hub/wp-content/themes/generatepress-child/style.css?ver=1723799495' media='all' /> <link rel='stylesheet' id='generate-google-fonts-css' href='https://fonts.googleapis.com/css?family=Roboto%3A100%2C100italic%2C300%2C300italic%2Cregular%2Citalic%2C500%2C500italic%2C700%2C700italic%2C900%2C900italic&display=swap&ver=3.4.0' media='all' /> <link rel='stylesheet' id='hcb-style-css' href='https://uptimerobot.com/knowledge-hub/wp-content/plugins/highlighting-code-block/build/css/hcb--dark.css?ver=2.0.1' media='all' /> <style id='hcb-style-inline-css'> :root{--hcb--fz--base: 14px}:root{--hcb--fz--mobile: 13px}:root{--hcb--ff:Roboto, Consolas, sans-serif;}.hcb_wrap{--hcb--data-label: none;--hcb--btn-offset: 0px;} </style> <link rel='stylesheet' media='print' onload="this.media='all'" id='wp-block-library-css' href='https://uptimerobot.com/knowledge-hub/wp-includes/css/dist/block-library/style.min.css?ver=a25461114d996c2352e4eac39db659a7' media='all' /> <script src="https://uptimerobot.com/knowledge-hub/wp-content/themes/generatepress-child/dist/main.js?ver=1712940427" id="uptimerobot-scripts-js"></script> <script src="https://uptimerobot.com/knowledge-hub/wp-includes/js/jquery/jquery.min.js?ver=3.7.1" id="jquery-core-js"></script> <script src="https://uptimerobot.com/knowledge-hub/wp-includes/js/jquery/jquery-migrate.min.js?ver=3.4.1" id="jquery-migrate-js"></script> <link rel="https://api.w.org/" href="https://uptimerobot.com/knowledge-hub/wp-json/" /><link rel="EditURI" type="application/rsd+xml" title="RSD" href="https://uptimerobot.com/knowledge-hub/xmlrpc.php?rsd" />  <script>(function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start': new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0], j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src= 'https://users.uptimerobot.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f); })(window,document,'script','dataLayer','GTM-TMWSCG3');</script>  <style> .ppw-ppf-input-container { background-color: !important; padding: px!important; border-radius: px!important; } .ppw-ppf-input-container div.ppw-ppf-headline { font-size: px!important; font-weight: !important; color: !important; } .ppw-ppf-input-container div.ppw-ppf-desc { font-size: px!important; font-weight: !important; color: !important; } .ppw-ppf-input-container label.ppw-pwd-label { font-size: px!important; font-weight: !important; color: !important; } div.ppwp-wrong-pw-error { font-size: px!important; font-weight: !important; color: #dc3232!important; background: !important; } .ppw-ppf-input-container input[type='submit'] { color: !important; background: !important; } .ppw-ppf-input-container input[type='submit']:hover { color: !important; background: !important; } .ppw-ppf-desc-below { font-size: px!important; font-weight: !important; color: !important; } </style> <style> .ppw-form { background-color: !important; padding: px!important; border-radius: px!important; } .ppw-headline.ppw-pcp-pf-headline { font-size: px!important; font-weight: !important; color: !important; } .ppw-description.ppw-pcp-pf-desc { font-size: px!important; font-weight: !important; color: !important; } .ppw-pcp-pf-desc-above-btn { display: block; } .ppw-pcp-pf-desc-below-form { font-size: px!important; font-weight: !important; color: !important; } .ppw-input label.ppw-pcp-password-label { font-size: px!important; font-weight: !important; color: !important; } .ppw-form input[type='submit'] { color: !important; background: !important; } .ppw-form input[type='submit']:hover { color: !important; background: !important; } div.ppw-error.ppw-pcp-pf-error-msg { font-size: px!important; font-weight: !important; color: #dc3232!important; background: !important; } </style> </head> <body class="blog wp-custom-logo wp-embed-responsive both-sidebars nav-float-right one-container header-aligned-left dropdown-click-arrow dropdown-click" itemtype="https://schema.org/Blog" itemscope>  <noscript><iframe src="https://users.uptimerobot.com/ns.html?id=GTM-TMWSCG3" height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript> <a class="screen-reader-text skip-link" href="#content" title="Skip to content">Skip to content</a> <div class="ur-prefix"> <header class="ur-header uk-position-fixed uk-flex uk-flex-middle uk-width-1-1 is-scrolled" role="banner"> <div class="uk-container uk-container-center"> <nav class="boundary-align uk-panel uk-flex uk-flex-middle uk-flex-between"> <div class="page-menu uk-flex uk-flex-middle"> <div class="uk-position-relative"> <a title="UptimeRobot Homepage" href="/"> <img alt="UptimeRobot logo" class="page-logo" src="https://uptimerobot.com/knowledge-hub/wp-content/themes/generatepress-child/assets/images/uptimerobot-logo.svg" width="210" height="23" /> </a> <a class="uk-label uk-label-warning" id="hiring-badge" href="https://itrinitycom.notion.site/Careers-work-with-us-d3796aa492764653af60f7028a87b206" target="_blank" rel="noopener nofollow"> We are hiring! </a> </div> <ul class="nav uk-visible@l"> <li> <a href="#"> Monitoring <i class="fas fa-chevron-down" style="font-size: 10px; position: relative; top: -1px; margin-left: 4px;"></i> </a> <div uk-dropdown="pos: bottom-justify; boundary: .boundary-align; boundary-align: true; animation: uk-animation-slide-top-small; duration: 200; offset: 25;" class="uk-background-default uk-padding-remove uk-width-1-1 uk-border-circle uk-position-absolute" > <div uk-grid class="uk-flex uk-flex-top uk-drop-grid uk-flex-left uk-child-width-1-4@m uk-margin-remove card monitoring-submenu"> <div class="uk-padding-small"> <strong class="font-24">Reliable uptime<br />monitoring<span class="uk-text-primary">.</span></strong> </div> <a href="https://uptimerobot.com/website-monitoring/" target="_blank" class="uk-flex uk-flex-top uk-padding-small monitor uk-margin-remove"> <div class="uk-flex uk-flex-middle uk-flex-left monitor-icon"> <img alt="website monitoring icon" src="https://uptimerobot.com/knowledge-hub/wp-content/themes/generatepress-child/assets/images/monitor-icons/website-monitoring.svg" width="50px" uk-img /> </div> <div class="uk-flex uk-flex-top uk-flex-column uk-margin-small-left text"> <span class="font-18 uk-text-secondary uk-text-bold uk-margin-remove">Website monitoring</span> <span class="font-16 uk-text-muted uk-margin-remove">Be the first to know that your website is down!</span> </div> </a> <a href="https://uptimerobot.com/cron-job-monitoring/" target="_blank" class="uk-flex uk-flex-top uk-padding-small monitor uk-margin-remove"> <div class="uk-flex uk-flex-middle uk-flex-left monitor-icon"> <img alt="cron job monitoring icon" src="https://uptimerobot.com/knowledge-hub/wp-content/themes/generatepress-child/assets/images/monitor-icons/cron-job-monitoring.svg" width="50px" uk-img /> </div> <div class="uk-flex uk-flex-top uk-flex-column uk-margin-small-left text"> <span class="font-18 uk-text-secondary uk-text-bold uk-margin-remove">Cron job monitoring</span> <span class="font-16 uk-text-muted uk-margin-remove">Monitor background jobs or intranet devices.</span> </div> </a> <a href="https://uptimerobot.com/port-monitoring/" target="_blank" class="uk-flex uk-flex-top uk-padding-small monitor uk-margin-remove"> <div class="uk-flex uk-flex-middle uk-flex-left monitor-icon"> <img alt="port monitoring icon" src="https://uptimerobot.com/knowledge-hub/wp-content/themes/generatepress-child/assets/images/monitor-icons/port-monitoring.svg" width="50px" uk-img /> </div> <div class="uk-flex uk-flex-top uk-flex-column uk-margin-small-left text"> <span class="font-18 uk-text-secondary uk-text-bold uk-margin-remove">Port monitoring</span> <span class="font-16 uk-text-muted uk-margin-remove">Monitor IMAP, POP3 or any other specific ports.</span> </div> </a> <a href="https://uptimerobot.com/keyword-monitoring/" target="_blank" class="uk-flex uk-flex-top uk-padding-small monitor uk-margin-remove"> <div class="uk-flex uk-flex-middle uk-flex-left monitor-icon"> <img alt="keyword monitoring icon" src="https://uptimerobot.com/knowledge-hub/wp-content/themes/generatepress-child/assets/images/monitor-icons/keyword-monitoring.svg" width="50px" uk-img /> </div> <div class="uk-flex uk-flex-top uk-flex-column uk-margin-small-left text"> <span class="font-18 uk-text-secondary uk-text-bold uk-margin-remove">Keyword monitoring</span> <span class="font-16 uk-text-muted uk-margin-remove">Check presence of any text on the page.</span> </div> </a> <a href="https://uptimerobot.com/ping-monitoring/" target="_blank" class="uk-flex uk-flex-top uk-padding-small monitor uk-margin-remove"> <div class="uk-flex uk-flex-middle uk-flex-left monitor-icon"> <img alt="ping monitoring icon" src="https://uptimerobot.com/knowledge-hub/wp-content/themes/generatepress-child/assets/images/monitor-icons/ping-monitoring.svg" width="50px" uk-img /> </div> <div class="uk-flex uk-flex-top uk-flex-column uk-margin-small-left text"> <span class="font-18 uk-text-secondary uk-text-bold uk-margin-remove">Ping monitoring</span> <span class="font-16 uk-text-muted uk-margin-remove">Leverage one of the most used network admin tools.</span> </div> </a> <a href="https://uptimerobot.com/ssl-monitoring/" target="_blank" class="uk-flex uk-flex-top uk-padding-small monitor uk-margin-remove"> <div class="uk-flex uk-flex-middle uk-flex-left monitor-icon"> <img alt="ssl certificate monitoring icon" src="https://uptimerobot.com/knowledge-hub/wp-content/themes/generatepress-child/assets/images/monitor-icons/ssl-monitoring.svg" width="50px" uk-img /> </div> <div class="uk-flex uk-flex-top uk-flex-column uk-margin-small-left text"> <span class="font-18 uk-text-secondary uk-text-bold uk-margin-remove">SSL monitoring</span> <span class="font-16 uk-text-muted uk-margin-remove">Don't lose visitors because of expired SSL certificates.</span> </div> </a> <a href="https://uptimerobot.com/domain-expiration-monitoring/" target="_blank" class="uk-flex uk-flex-top uk-padding-small monitor uk-margin-remove"> <div class="uk-flex uk-flex-middle uk-flex-left monitor-icon"> <img alt="domain expiration monitoring icon" src="https://uptimerobot.com/knowledge-hub/wp-content/themes/generatepress-child/assets/images/monitor-icons/domain-monitoring.svg" width="50px" uk-img /> </div> <div class="uk-flex uk-flex-top uk-flex-column uk-margin-small-left text"> <span class="font-18 uk-text-secondary uk-text-bold uk-margin-remove">Domain monitoring</span> <span class="font-16 uk-text-muted uk-margin-remove">Don't let your unique domain name expire.</span> </div> </a> </div> <div> </li> <li> <a href="https://uptimerobot.com/integrations/" target="_blank"> Integrations </a> </li> <li> <a href="https://uptimerobot.com/status-page/" target="_blank"> Status Page </a> </li> <li> <a href="https://uptimerobot.com/pricing/" target="_blank"> Pricing  </a> </li> </ul> </div> <button aria-label="Open menu" type="button" class="btn-icon uk-hidden@l uk-margin-small-left" uk-toggle="target: #mobile-menu" type="button" > <i class="fas fa-bars"></i> </button> </div> </nav> </header> <aside id="mobile-menu" uk-offcanvas="overlay: true" class="mobile-menu-wrap kokotina"> <div class="uk-flex uk-flex-column uk-padding-remove uk-offcanvas-bar uk-width-1-1 mobile-menu"> <div class="uk-flex uk-flex-between uk-flex-middle uk-padding"> <a class="" title="UptimeRobot Homepage" href="/"> <img alt="UptimeRobot logo" class="page-logo" src="https://uptimerobot.com/knowledge-hub/wp-content/themes/generatepress-child/assets/images/uptimerobot-logo.svg" width="210" height="23" /> </a> <button class="btn-icon uk-offcanvas-close" type="button" uk-close ><i class="fas fa-x"></i></button> </div> <div class="uk-flex uk-flex-column uk-child-width-1@m uk-padding mobile-menu-section"> <span class="font-18 uk-text-bold">Monitors</span> <div class="uk-flex uk-flex-middle uk-padding-remove uk-margin-remove uk-flex-between uk-width-1-1 uk-child-width-1@m uk-grid monitoring-submenu-mobile"> <a href="https://uptimerobot.com/website-monitoring/" target="_blank" class="uk-flex uk-flex-top uk-padding-small monitor uk-margin-remove"> <div class="uk-flex uk-flex-middle uk-flex-left monitor-icon"> <img alt="website monitoring icon" src="https://uptimerobot.com/knowledge-hub/wp-content/themes/generatepress-child/assets/images/monitor-icons/dark/website-monitoring.svg" width="50px" uk-img /> </div> <div class="uk-flex uk-flex-top uk-flex-column uk-margin-small-left text"> <span class="font-18 uk-text-secondary uk-text-bold uk-margin-remove">Website monitoring</span> <span class="font-16 uk-text-muted uk-margin-remove">Be the first to know that your website is down!</span> </div> </a> <a href="https://uptimerobot.com/cron-job-monitoring/" target="_blank" class="uk-flex uk-flex-top uk-padding-small monitor uk-margin-remove"> <div class="uk-flex uk-flex-middle uk-flex-left monitor-icon"> <img alt="cron job monitoring icon" src="https://uptimerobot.com/knowledge-hub/wp-content/themes/generatepress-child/assets/images/monitor-icons/dark/cron-job-monitoring.svg" width="50px" uk-img /> </div> <div class="uk-flex uk-flex-top uk-flex-column uk-margin-small-left text"> <span class="font-18 uk-text-secondary uk-text-bold uk-margin-remove">Cron job monitoring</span> <span class="font-16 uk-text-muted uk-margin-remove">Monitor background jobs or intranet devices.</span> </div> </a> <a href="https://uptimerobot.com/port-monitoring/" target="_blank" class="uk-flex uk-flex-top uk-padding-small monitor uk-margin-remove"> <div class="uk-flex uk-flex-middle uk-flex-left monitor-icon"> <img alt="port monitoring icon" src="https://uptimerobot.com/knowledge-hub/wp-content/themes/generatepress-child/assets/images/monitor-icons/dark/port-monitoring.svg" width="50px" uk-img /> </div> <div class="uk-flex uk-flex-top uk-flex-column uk-margin-small-left text"> <span class="font-18 uk-text-secondary uk-text-bold uk-margin-remove">Port monitoring</span> <span class="font-16 uk-text-muted uk-margin-remove">Monitor IMAP, POP3 or any other specific ports.</span> </div> </a> <a href="https://uptimerobot.com/keyword-monitoring/" target="_blank" class="uk-flex uk-flex-top uk-padding-small monitor uk-margin-remove"> <div class="uk-flex uk-flex-middle uk-flex-left monitor-icon"> <img alt="keyword monitoring icon" src="https://uptimerobot.com/knowledge-hub/wp-content/themes/generatepress-child/assets/images/monitor-icons/dark/keyword-monitoring.svg" width="50px" uk-img /> </div> <div class="uk-flex uk-flex-top uk-flex-column uk-margin-small-left text"> <span class="font-18 uk-text-secondary uk-text-bold uk-margin-remove">Keyword monitoring</span> <span class="font-16 uk-text-muted uk-margin-remove">Check presence of any text on the page.</span> </div> </a> <a href="https://uptimerobot.com/ping-monitoring/" target="_blank" class="uk-flex uk-flex-top uk-padding-small monitor uk-margin-remove"> <div class="uk-flex uk-flex-middle uk-flex-left monitor-icon"> <img alt="ping monitoring icon" src="https://uptimerobot.com/knowledge-hub/wp-content/themes/generatepress-child/assets/images/monitor-icons/dark/ping-monitoring.svg" width="50px" uk-img /> </div> <div class="uk-flex uk-flex-top uk-flex-column uk-margin-small-left text"> <span class="font-18 uk-text-secondary uk-text-bold uk-margin-remove">Ping monitoring</span> <span class="font-16 uk-text-muted uk-margin-remove">Leverage one of the most used network admin tools.</span> </div> </a> <a href="https://uptimerobot.com/ssl-monitoring/" target="_blank" class="uk-flex uk-flex-top uk-padding-small monitor uk-margin-remove"> <div class="uk-flex uk-flex-middle uk-flex-left monitor-icon"> <img alt="ssl certificate monitoring icon" src="https://uptimerobot.com/knowledge-hub/wp-content/themes/generatepress-child/assets/images/monitor-icons/dark/ssl-monitoring.svg" width="50px" uk-img /> </div> <div class="uk-flex uk-flex-top uk-flex-column uk-margin-small-left text"> <span class="font-18 uk-text-secondary uk-text-bold uk-margin-remove">SSL monitoring</span> <span class="font-16 uk-text-muted uk-margin-remove">Don't lose visitors because of expired SSL certificates.</span> </div> </a> <a href="https://uptimerobot.com/domain-expiration-monitoring/" target="_blank" class="uk-flex uk-flex-top uk-padding-small monitor uk-margin-remove"> <div class="uk-flex uk-flex-middle uk-flex-left monitor-icon"> <img alt="domain expiration monitoring icon" src="https://uptimerobot.com/knowledge-hub/wp-content/themes/generatepress-child/assets/images/monitor-icons/dark/domain-monitoring.svg" width="50px" uk-img /> </div> <div class="uk-flex uk-flex-top uk-flex-column uk-margin-small-left text"> <span class="font-18 uk-text-secondary uk-text-bold uk-margin-remove">Domain monitoring</span> <span class="font-16 uk-text-muted uk-margin-remove">Don't let your unique domain name expire.</span> </div> </a> </div> </div> <ul class="uk-flex uk-flex-column uk-padding mobile-menu-list font-18 uk-text-bold mobile-menu-section"> <li> <a href="https://uptimerobot.com/integrations/" target="_blank" class="uk-padding-small uk-display-block uk-padding-remove-horizontal {{#if pricing_page}}active-menu{{/if}}"> Integrations </a> </li> <li> <a href="https://uptimerobot.com/status-page/" target="_blank" class="uk-padding-small uk-display-block uk-padding-remove-horizontal {{#if pricing_page}}active-menu{{/if}}"> Status Page </a> </li> <li> <a href="https://uptimerobot.com/pricing/" target="_blank" class="uk-padding-small uk-display-block uk-padding-remove-horizontal {{#if pricing_page}}active-menu{{/if}}"> Pricing </a> </li>  </ul>  </div> </aside> </div> <div class="kw-header"> <div class="knowledge-hub-header centered-content"> <h1>Knowledge Hub</h1> <p>Our Knowledge Hub aims to offer in-depth technical guides designed to enhance users’ understanding and skills in various technical domains.</p> </div>  <div class="search-bar-container"> <form action="" method="get" class="search-form"> <input type="text" name="s" placeholder="Search our knowledge hub..." value=""> <button type="submit">Search</button> </form> </div> </div> <div class="site grid-container container hfeed" id="page"> <div class="site-content" id="content"> <style> .posts-list a { text-decoration: none !important; color: black !important; } </style><div class="site-container"><div class="blog-sidebar"><div class="toc-title">Categories</div><ul class="toc-list"><li><a href="https://uptimerobot.com/knowledge-hub/glossary/">Glossary</a></li><li><a href="https://uptimerobot.com/knowledge-hub/cron-monitoring/">Cron Monitoring</a></li><li><a href="https://uptimerobot.com/knowledge-hub/devops/">DevOps</a></li><li><a href="https://uptimerobot.com/knowledge-hub/logging/">Logging</a></li><li><a href="https://uptimerobot.com/knowledge-hub/monitoring/">Monitoring</a></li><li><a href="https://uptimerobot.com/knowledge-hub/response-time-page-speed/">Response Time & Page Speed</a></li></ul></div><div class="blog-categories-wrapper"><div class="blog-category-container"><h2 id="cron-monitoring">Cron Monitoring</h2><div class="posts-box"><ul class="posts-list"><a href="https://uptimerobot.com/knowledge-hub/cron-monitoring/cron-job-guide/"><li><i class="fa-solid fa-book"></i>Our complete cron job guide for 2024<span class="reading-time"><div class="reading-time-container"> <i class="fa-regular fa-clock"></i> <span class="reading-time-text">14 min</span> </div></span></li></a></ul></div></div><div class="blog-category-container"><h2 id="devops">DevOps</h2><div class="posts-box"><ul class="posts-list"><a href="https://uptimerobot.com/knowledge-hub/devops/status-pages-guide/"><li><i class="fa-solid fa-book"></i>A Comprehensive Guide to Status Pages in 2024<span class="reading-time"><div class="reading-time-container"> <i class="fa-regular fa-clock"></i> <span class="reading-time-text">7 min</span> </div></span></li></a><a href="https://uptimerobot.com/knowledge-hub/devops/incident-management-guide/"><li><i class="fa-solid fa-book"></i>Incident Management Guide & Explanation<span class="reading-time"><div class="reading-time-container"> <i class="fa-regular fa-clock"></i> <span class="reading-time-text">13 min</span> </div></span></li></a><a href="https://uptimerobot.com/knowledge-hub/devops/nas-vs-cloud/"><li><i class="fa-solid fa-book"></i>NAS vs Cloud Storage: A Comprehensive Comparison<span class="reading-time"><div class="reading-time-container"> <i class="fa-regular fa-clock"></i> <span class="reading-time-text">14 min</span> </div></span></li></a><a href="https://uptimerobot.com/knowledge-hub/devops/subnet-explained/"><li><i class="fa-solid fa-book"></i>Subnet Explained<span class="reading-time"><div class="reading-time-container"> <i class="fa-regular fa-clock"></i> <span class="reading-time-text">18 min</span> </div></span></li></a><a href="https://uptimerobot.com/knowledge-hub/devops/ipv4-ipv6/"><li><i class="fa-solid fa-book"></i>The difference between IPv4 and IPv6<span class="reading-time"><div class="reading-time-container"> <i class="fa-regular fa-clock"></i> <span class="reading-time-text">21 min</span> </div></span></li></a><a href="https://uptimerobot.com/knowledge-hub/devops/incident-management/"><li><i class="fa-solid fa-book"></i>Top 15 Incident Management Tools For Efficiency<span class="reading-time"><div class="reading-time-container"> <i class="fa-regular fa-clock"></i> <span class="reading-time-text">15 min</span> </div></span></li></a><a href="https://uptimerobot.com/knowledge-hub/devops/hosting-providers/"><li><i class="fa-solid fa-book"></i>Best Web Hosting Providers in 2024 for Starters and Beginners<span class="reading-time"><div class="reading-time-container"> <i class="fa-regular fa-clock"></i> <span class="reading-time-text">20 min</span> </div></span></li></a><a href="https://uptimerobot.com/knowledge-hub/devops/deployment-tools/"><li><i class="fa-solid fa-book"></i>Top 21 Software Deployment Tools<span class="reading-time"><div class="reading-time-container"> <i class="fa-regular fa-clock"></i> <span class="reading-time-text">22 min</span> </div></span></li></a><a href="https://uptimerobot.com/knowledge-hub/devops/npm-install/"><li><i class="fa-solid fa-book"></i>NPM: How to Install a Specific Version<span class="reading-time"><div class="reading-time-container"> <i class="fa-regular fa-clock"></i> <span class="reading-time-text">10 min</span> </div></span></li></a><a href="https://uptimerobot.com/knowledge-hub/devops/dns-record-types-explained/"><li><i class="fa-solid fa-book"></i>DNS Record Types: Explained<span class="reading-time"><div class="reading-time-container"> <i class="fa-regular fa-clock"></i> <span class="reading-time-text">8 min</span> </div></span></li></a></ul></div></div><div class="blog-category-container"><h2 id="logging">Logging</h2><div class="posts-box"><ul class="posts-list"><a href="https://uptimerobot.com/knowledge-hub/logging/a-guide-to-understanding-log-levels/"><li><i class="fa-solid fa-book"></i>A Guide to Understanding Log Levels<span class="reading-time"><div class="reading-time-container"> <i class="fa-regular fa-clock"></i> <span class="reading-time-text">6 min</span> </div></span></li></a></ul></div></div><div class="blog-category-container"><h2 id="monitoring">Monitoring</h2><div class="posts-box"><ul class="posts-list"><a href="https://uptimerobot.com/knowledge-hub/monitoring/http-status-codes-guide/"><li><i class="fa-solid fa-book"></i>HTTP Status Codes Uncovered: Your Ultimate Guide<span class="reading-time"><div class="reading-time-container"> <i class="fa-regular fa-clock"></i> <span class="reading-time-text">29 min</span> </div></span></li></a><a href="https://uptimerobot.com/knowledge-hub/monitoring/network-monitoring-guide/"><li><i class="fa-solid fa-book"></i>Mastering Network Monitoring: Your Guide to Uninterrupted Excellence<span class="reading-time"><div class="reading-time-container"> <i class="fa-regular fa-clock"></i> <span class="reading-time-text">16 min</span> </div></span></li></a><a href="https://uptimerobot.com/knowledge-hub/monitoring/icmp-ping-monitoring/"><li><i class="fa-solid fa-book"></i>What Is Ping Monitoring<span class="reading-time"><div class="reading-time-container"> <i class="fa-regular fa-clock"></i> <span class="reading-time-text">10 min</span> </div></span></li></a><a href="https://uptimerobot.com/knowledge-hub/monitoring/ssl-certificate-errors/"><li><i class="fa-solid fa-book"></i>SSL Certificate Errors: A comprehensive guide<span class="reading-time"><div class="reading-time-container"> <i class="fa-regular fa-clock"></i> <span class="reading-time-text">15 min</span> </div></span></li></a><a href="https://uptimerobot.com/knowledge-hub/monitoring/what-is-network-monitoring/"><li><i class="fa-solid fa-book"></i>What is network monitoring?<span class="reading-time"><div class="reading-time-container"> <i class="fa-regular fa-clock"></i> <span class="reading-time-text">12 min</span> </div></span></li></a><a href="https://uptimerobot.com/knowledge-hub/monitoring/what-is-synthetic-monitoring/"><li><i class="fa-solid fa-book"></i>What is Synthetic Monitoring?<span class="reading-time"><div class="reading-time-container"> <i class="fa-regular fa-clock"></i> <span class="reading-time-text">10 min</span> </div></span></li></a><a href="https://uptimerobot.com/knowledge-hub/monitoring/cron-jobs/"><li><i class="fa-solid fa-book"></i>How to Run Cron Jobs<span class="reading-time"><div class="reading-time-container"> <i class="fa-regular fa-clock"></i> <span class="reading-time-text">4 min</span> </div></span></li></a><a href="https://uptimerobot.com/knowledge-hub/monitoring/post-mortem-meeting/"><li><i class="fa-solid fa-book"></i>How to Run a Post-Mortem Meeting – A guide in 2024<span class="reading-time"><div class="reading-time-container"> <i class="fa-regular fa-clock"></i> <span class="reading-time-text">6 min</span> </div></span></li></a><a href="https://uptimerobot.com/knowledge-hub/monitoring/snmp-monitoring/"><li><i class="fa-solid fa-book"></i>SNMP Monitoring Explained<span class="reading-time"><div class="reading-time-container"> <i class="fa-regular fa-clock"></i> <span class="reading-time-text">13 min</span> </div></span></li></a><a href="https://uptimerobot.com/knowledge-hub/monitoring/server-performance-monitoring-tools/"><li><i class="fa-solid fa-book"></i>Top 10 Server Performance Monitoring Tools & Software in 2024<span class="reading-time"><div class="reading-time-container"> <i class="fa-regular fa-clock"></i> <span class="reading-time-text">13 min</span> </div></span></li></a></ul></div></div><div class="blog-category-container"><h2 id="response-time-page-speed">Response Time & Page Speed</h2><div class="posts-box"><ul class="posts-list"><a href="https://uptimerobot.com/knowledge-hub/response-time-page-speed/response-time-monitoring-guide/"><li><i class="fa-solid fa-book"></i>A Guide to Response Time Monitoring<span class="reading-time"><div class="reading-time-container"> <i class="fa-regular fa-clock"></i> <span class="reading-time-text">11 min</span> </div></span></li></a><a href="https://uptimerobot.com/knowledge-hub/response-time-page-speed/website-speed-testing-tools/"><li><i class="fa-solid fa-book"></i>The 10 Best Website Speed Testing Tools in 2024<span class="reading-time"><div class="reading-time-container"> <i class="fa-regular fa-clock"></i> <span class="reading-time-text">10 min</span> </div></span></li></a><a href="https://uptimerobot.com/knowledge-hub/response-time-page-speed/10-tips-to-improve-website-speed/"><li><i class="fa-solid fa-book"></i>10 Tips To Improve Website Speed<span class="reading-time"><div class="reading-time-container"> <i class="fa-regular fa-clock"></i> <span class="reading-time-text">9 min</span> </div></span></li></a></ul></div></div></div></div> </div> </div> <div class="site-footer"> <div class="ur-prefix"> <footer class="page-footer uk-section uk-section-secondary uk-section-large uk-position-relative uk-position-z-index"> <div class="uk-container"> <div class="uk-margin-bottom" uk-grid> <div class="uk-width-1-3@l"> <a title="UptimeRobot Homepage" href="/" class="uk-margin-small-bottom uk-display-inline-block"> <img alt="UptimeRobot logo" class="page-logo" src="https://uptimerobot.com/knowledge-hub/wp-content/themes/generatepress-child/assets/images/uptimerobot-logo.svg" width="210" height="23" /> </a> <div> Downtime happens. Get notified! </div> <p class="uk-margin-small uk-text-muted"> Join more than 2,100,000 happy users! UptimeRobot is one of the most popular website monitoring services in the world. </p> <div class="footer-social"> <a aria-label="Go to our Facebook page" class="btn-icon uk-padding-remove-vertical" href="https://www.facebook.com/UptimeRobot/" rel="me noopener" target="_blank" > <i class="fa-brands fa-facebook"></i> </a> <a aria-label="Go to our Twitter profile" class="btn-icon uk-padding-remove-vertical" href="https://twitter.com/uptimerobot" rel="me noopener" target="_blank" > <i class="fa-brands fa-twitter"></i> </a> <a aria-label="Go to our LinkedIn profile" class="btn-icon uk-padding-remove-vertical" href="https://www.linkedin.com/company/uptime-robot/" rel="me noopener" target="_blank" > <i class="fa-brands fa-linkedin"></i> </a> <a aria-label="Go to our Discord channel" class="btn-icon uk-padding-remove-vertical" href="https://discord.gg/JRBar2vA5N" rel="me noopener" target="_blank" > <i class="fa-brands fa-discord"></i> </a> </div> </div> <div class="uk-width-2-3@l"> <div uk-grid> <div class="uk-width-1-3@l"> <h3 class="uk-margin-small-bottom">Monitoring<span class="uk-text-primary">.</span></h3> <ul class="footer-nav uk-text-muted"> <li><a href="/website-monitoring/?ref=footer">Website monitoring</a></li> <li><a href="/ssl-monitoring/?ref=footer">SSL monitoring</a></li> <li><a href="/domain-expiration-monitoring/?ref=footer">Domain monitoring</a></li> <li><a href="/ping-monitoring/?ref=footer">Ping monitoring</a></li> <li><a href="/port-monitoring/?ref=footer">Port monitoring</a></li> <li><a href="/tcp-monitoring/?ref=footer">TCP monitoring</a></li> <li><a href="/cron-job-monitoring/?ref=footer">Cron job monitoring</a></li> <li><a href="/keyword-monitoring/?ref=footer">Keyword monitoring</a></li> </ul> </div> <div class="uk-width-1-3@l"> <h3 class="uk-margin-small-bottom">Company<span class="uk-text-primary">.</span></h3> <ul class="footer-nav uk-text-muted"> <li><a href="/pricing/">Pricing</a></li> <li><a href="https://uptimerobot.com/blog/">Blog</a></li> <li><a href="/affiliate/">Affiliate program</a></li> <li><a href="/sponsorship/">Non profit & charities 🤲</a></li> <li><a href="/terms/">Terms</a> / <a href="/privacy">Privacy</a></li> <li><a href="/contact/">Contact us</a></li> <li> <a class="uk-label uk-label-warning" href="https://itrinitycom.notion.site/Careers-work-with-us-d3796aa492764653af60f7028a87b206" target="_blank" rel="noopener nofollow" style="text-decoration: none !important;"> We are hiring! </a> </li> </ul> </div> <div class="uk-width-1-3@l"> <h3 class="uk-margin-small-bottom">Resources<span class="uk-text-primary">.</span></h3> <ul class="footer-nav uk-text-muted"> <li><a href="/integrations/">Integrations</a></li> <li><a href="/api/">API</a></li> <li><a href="/faq/">FAQs</a></li> <li><a href="/help/">Help center</a></li> <li><a href="/help/locations/">Locations & IPs</a></li> <li><a href="/comparisons/">Comparisons</a></li> </ul> </div> </div> </div> </div> <div class="uk-text-center"> <span class="green-dot is-big is-pulse" uk-tooltip="title: Yes, we are always monitoring! 😉; delay: 1000; pos: bottom"></span> </div> </div> </footer> </div> </div> <a title="Scroll back to top" aria-label="Scroll back to top" rel="nofollow" href="#" class="generate-back-to-top" data-scroll-speed="400" data-start-scroll="300"> <span class="gp-icon icon-arrow-up"><svg viewBox="0 0 330 512" aria-hidden="true" xmlns="http://www.w3.org/2000/svg" width="1em" height="1em" fill-rule="evenodd" clip-rule="evenodd" stroke-linejoin="round" stroke-miterlimit="1.414"><path d="M305.863 314.916c0 2.266-1.133 4.815-2.832 6.514l-14.157 14.163c-1.699 1.7-3.964 2.832-6.513 2.832-2.265 0-4.813-1.133-6.512-2.832L164.572 224.276 53.295 335.593c-1.699 1.7-4.247 2.832-6.512 2.832-2.265 0-4.814-1.133-6.513-2.832L26.113 321.43c-1.699-1.7-2.831-4.248-2.831-6.514s1.132-4.816 2.831-6.515L158.06 176.408c1.699-1.7 4.247-2.833 6.512-2.833 2.265 0 4.814 1.133 6.513 2.833L303.03 308.4c1.7 1.7 2.832 4.249 2.832 6.515z" fill-rule="nonzero" /></svg></span> </a><script data-cfasync="false" type="text/javascript"> window.civchat = { apiKey: "su5k6k", }; </script> <script data-cfasync="false" type="text/javascript" src="https://uptimerobot.user.com/widget.js"></script> <script type="text/javascript"> document.addEventListener('DOMContentLoaded', function() { var h1Elements = document.querySelectorAll('.kw-header h1'); h1Elements.forEach(function(h1) { var dotSpan = document.createElement('span'); dotSpan.classList.add('h1-dot'); h1.appendChild(dotSpan); }); }); </script> <script id="generate-a11y">!function(){"use strict";if("querySelector"in document&&"addEventListener"in window){var e=document.body;e.addEventListener("mousedown",function(){e.classList.add("using-mouse")}),e.addEventListener("keydown",function(){e.classList.remove("using-mouse")})}}();</script><script src="https://uptimerobot.com/knowledge-hub/wp-content/themes/generatepress-child/assets/js/table-of-contents.js" id="table-of-contents-js"></script> <script src="https://uptimerobot.com/knowledge-hub/wp-content/themes/generatepress-child/assets/js/custom-search.js?ver=1.0.0" id="custom-search-js"></script> <script src="https://uptimerobot.com/knowledge-hub/wp-content/themes/generatepress-child/assets/js/faq-section.js?ver=1.0.0" id="faq-section-js"></script>  <script id="generate-menu-js-extra"> var generatepressMenu = {"toggleOpenedSubMenus":"1","openSubMenuLabel":"Open Sub-Menu","closeSubMenuLabel":"Close Sub-Menu"}; </script> <script src="https://uptimerobot.com/knowledge-hub/wp-content/themes/generatepress/assets/js/menu.min.js?ver=3.4.0" id="generate-menu-js"></script> <script src="https://uptimerobot.com/knowledge-hub/wp-content/themes/generatepress/assets/js/dropdown-click.min.js?ver=3.4.0" id="generate-dropdown-click-js"></script> <script id="generate-back-to-top-js-extra"> var generatepressBackToTop = {"smooth":"1"}; </script> <script src="https://uptimerobot.com/knowledge-hub/wp-content/themes/generatepress/assets/js/back-to-top.min.js?ver=3.4.0" id="generate-back-to-top-js"></script> <script src="https://uptimerobot.com/knowledge-hub/wp-content/plugins/highlighting-code-block/assets/js/prism.js?ver=2.0.1" id="hcb-prism-js"></script> <script src="https://uptimerobot.com/knowledge-hub/wp-includes/js/clipboard.min.js?ver=2.0.11" id="clipboard-js"></script> <script id="hcb-script-js-extra"> var hcbVars = {"showCopyBtn":"1","copyBtnLabel":"Copy code to clipboard"}; </script> <script src="https://uptimerobot.com/knowledge-hub/wp-content/plugins/highlighting-code-block/build/js/hcb_script.js?ver=2.0.1" id="hcb-script-js"></script> </body> </html>

CINXE.COM

UptimeRobot Knowledge Hub -