{"id":16657,"date":"2021-07-03T18:06:03","date_gmt":"2021-07-03T12:36:03","guid":{"rendered":"http:\/\/onlineappsdba.com\/?p=16657"},"modified":"2021-07-03T18:06:03","modified_gmt":"2021-07-03T12:36:03","slug":"kubernetes-readiness-and-livenessprobe","status":"publish","type":"post","link":"https:\/\/onlineappsdba.com\/index.php\/2021\/07\/03\/kubernetes-readiness-and-livenessprobe\/","title":{"rendered":"Kubernetes Health Check with Readiness Probe and LivenessProbe"},"content":{"rendered":"<p>\ud83e\udda0In a recent study, scientists have concluded that the Coronavirus also infects the Kubernetes pods \ud83e\udd2f<\/p>\n<p>\ud83e\ude7a That is why we need to do Health Check for Kubernetes! Of course, I was kidding; but a health check or probe is indeed a method of checking the health of a Kubernetes pod.<\/p>\n<p>\ud83e\ude79 What is Health Check or Kubernetes Probe? The process of checking the &#8216;health&#8217; of Kubernetes to see if they are working correctly and receiving traffic is health checks, a.k.a, probes.<\/p>\n<p>\u267b\ufe0f Lifecycle of a Pod Check out the states in a lifecycle of a Kubernetes Pod:<\/p>\n<p>Running: The Running status states that a container is executing successfully.<\/p>\n<p>Terminated: The termination state of a container is caused by either completion or failure from the running state.<\/p>\n<p>Waiting: A container is Waiting when it is neither in Running nor in the Terminated state. \u2753<\/p>\n<p>Why do we need Kubernetes Probes?<\/p>\n<p>K8s checks individual containers\u2019 health to ascertain the overall pod health. But, with probes, we can determine whether a container is dead or alive and decide if K8 s should momentarily halt other containers from accessing it.<\/p>\n<p>\ud83e\udd13 Fancy to see them in action with some cool graphics? Check this blog out <a href=\"https:\/\/k21academy.com\/docker-kubernetes\/kubernetes-readiness-and-livenessprobe\/?utm_source=onlineappsdba&amp;utm_medium=referral&amp;utm_campaign=kubernetes52_july21\" target=\"_blank\" rel=\"noopener noreferrer\"><em><strong>https:\/\/k21academy.com\/kubernetes52<\/strong> <\/em><\/a>where we have covered the following topics with a complete hands-on:<\/p>\n<p>\u27aa What are health check probes?<\/p>\n<p>\u27aa Lifecycle of a Kubernetes Pod<\/p>\n<p>\u27aa Why are Kubernetes Probes Important?<\/p>\n<p>\u27aa Types of Probes<\/p>\n<p>\u27aa Liveness Probe<\/p>\n<p>\u27aa Readiness Probe<\/p>\n<p>\u27aa How to Create Kubernetes Probes?<\/p>\n<p>\u27aa Create LivenessProbe<\/p>\n<p>\u27aa Create ReadinessProbe<\/p>\n<p>If you are an Admin, Architect, or Tester, then attend the FREE Class for Docker &amp; Kubernetes Administrator (CKA) \ud83d\udc49 <a href=\"https:\/\/k21academy.com\/free-masterclass-dockers-kubernetes-administrations-with-certifications\/?utm_source=onlineappsdba&amp;utm_medium=referral&amp;utm_campaign=kubernetes02_july21\" target=\"_blank\" rel=\"noopener noreferrer\"><em><strong>K21academy.com\/kubernetes02<\/strong><\/em><\/a><\/p>\n<p><a href=\"https:\/\/k21academy.com\/free-masterclass-dockers-kubernetes-administrations-with-certifications\/?utm_source=onlineappsdba&amp;utm_medium=referral&amp;utm_campaign=kubernetes02_july21\" target=\"_blank\" rel=\"noopener noreferrer\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter wp-image-73471 size-full\" src=\"https:\/\/k21academy.com\/wp-content\/uploads\/2020\/09\/CKA_CU-3.gif\" alt=\"\" width=\"1239\" height=\"185\" \/><\/a><\/p>\n<p>FREE Telegram group at <a href=\"https:\/\/t.me\/k21dockerkubernetes\"><em><strong>https:\/\/t.me\/k21dockerkubernetes<\/strong> <\/em><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\ud83e\udda0In a recent study, scientists have concluded that the Coronavirus also infects the Kubernetes pods \ud83e\udd2f \ud83e\ude7a That is why [&hellip;]<\/p>\n","protected":false},"author":115,"featured_media":16658,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center 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center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[524],"tags":[],"class_list":["post-16657","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-docker-kubernetes"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v25.8 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Kubernetes Health Check | LivenessProbe | Readiness Probe<\/title>\n<meta name=\"description\" content=\"Kubernetes Probes are of two types, Liveness and Kubernetes Readiness Probe. 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