{"id":5134,"date":"2018-08-10T09:21:50","date_gmt":"2018-08-10T09:21:50","guid":{"rendered":"http:\/\/www.scmgalaxy.com\/tutorials\/?p=5134"},"modified":"2021-11-17T10:21:13","modified_gmt":"2021-11-17T10:21:13","slug":"what-is-annotations-in-kubernetes","status":"publish","type":"post","link":"https:\/\/www.devopsschool.com\/blog\/what-is-annotations-in-kubernetes\/","title":{"rendered":"What is Annotations in Kubernetes?"},"content":{"rendered":"<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-5143\" src=\"http:\/\/www.scmgalaxy.com\/tutorials\/wp-content\/uploads\/2018\/08\/kubernetes-copy.png\" alt=\"\" width=\"600\" height=\"315\" srcset=\"https:\/\/www.devopsschool.com\/blog\/wp-content\/uploads\/2018\/08\/kubernetes-copy.png 600w, https:\/\/www.devopsschool.com\/blog\/wp-content\/uploads\/2018\/08\/kubernetes-copy-300x158.png 300w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<p class=\"p1\">What is Annotations in Kubernetes?<\/p>\n<p class=\"p1\">There are two way using you can attach metadata to Kubernetes objects.<\/p>\n<ol class=\"ol1\">\n<li class=\"li1\">labels<\/li>\n<li class=\"li1\">annotations<\/li>\n<\/ol>\n<p class=\"p1\">Kubernetes annotations is used to attach arbitrary non-identifying metadata to objects. Clients such as tools and libraries can retrieve this metadata.<\/p>\n<p class=\"p1\">In contrast, annotations are not used to identify and select objects. The metadata in an annotation can be small or large, structured or unstructured, and can include characters not permitted by labels.<\/p>\n<p class=\"p1\">Annotations, like labels, are key\/value maps:<\/p>\n<p class=\"p1\">apiVersion: extensions\/v1beta1<\/p>\n<p class=\"p1\">kind: Deployment<\/p>\n<p class=\"p1\">metadata:<\/p>\n<p class=\"p1\"><span class=\"Apple-converted-space\">&nbsp; <\/span>annotations:<\/p>\n<p class=\"p1\"><span class=\"Apple-converted-space\">&nbsp; &nbsp; <\/span>kompose.cmd: .\/kompose convert<\/p>\n<p class=\"p1\"><span class=\"Apple-converted-space\">&nbsp; &nbsp; <\/span>kompose.version: &#8220;&#8221;<\/p>\n<p><strong>FORMAT<\/strong><\/p>\n<p><\/p>\n<p class=\"p4\"><\/p>\n\n<pre class=\"wp-block-code\" aria-describedby=\"shcb-language-1\" data-shcb-language-name=\"PHP\" data-shcb-language-slug=\"php\"><span><code class=\"hljs language-php\"><span class=\"hljs-string\">\"metadata\"<\/span>: {\n<span class=\"hljs-string\">\"annotations\"<\/span>: {&lt;\/p&gt;\n<span class=\"hljs-string\">\"key1\"<\/span> : <span class=\"hljs-string\">\"value1\"<\/span>,&lt;\/p&gt;\n<span class=\"hljs-string\">\"key2\"<\/span> : <span class=\"hljs-string\">\"value2\"<\/span>&lt;\/p&gt;\n}<\/code><\/span><small class=\"shcb-language\" id=\"shcb-language-1\"><span class=\"shcb-language__label\">Code language:<\/span> <span class=\"shcb-language__name\">PHP<\/span> <span class=\"shcb-language__paren\">(<\/span><span class=\"shcb-language__slug\">php<\/span><span class=\"shcb-language__paren\">)<\/span><\/small><\/pre>\n\n\n<p><strong>Here are some examples of information that could be recorded in annotations:<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\"><li>Build, release, or image information like timestamps, release IDs, git branch, PR numbers, image hashes, and registry address.<\/li><li>Pointers to logging, monitoring, analytics, or audit repositories.<\/li><\/ol>\n\n\n\n<p>More<\/p>\n\n\n\n<p><a href=\"https:\/\/kubernetes.io\/docs\/concepts\/overview\/working-with-objects\/annotations\/\" target=\"_blank\" rel=\"noopener\">https:\/\/kubernetes.io\/docs\/concepts\/overview\/working-with-objects\/annotations\/<\/a><\/p>\n\n\n<div class=\"epyt-gallery\" data-currpage=\"1\" id=\"epyt_gallery_84347\"><iframe loading=\"lazy\"  id=\"_ytid_31849\"  width=\"760\" height=\"427\"  data-origwidth=\"760\" data-origheight=\"427\" src=\"https:\/\/www.youtube.com\/embed\/?enablejsapi=1&#038;autoplay=0&#038;cc_load_policy=0&#038;cc_lang_pref=&#038;iv_load_policy=1&#038;loop=0&#038;rel=1&#038;fs=1&#038;playsinline=0&#038;autohide=2&#038;theme=dark&#038;color=red&#038;controls=1&#038;disablekb=0&#038;\" class=\"__youtube_prefs__  no-lazyload\" title=\"YouTube player\"  data-epytgalleryid=\"epyt_gallery_84347\"  allow=\"fullscreen; accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen data-no-lazy=\"1\" data-skipgform_ajax_framebjll=\"\"><\/iframe><div class=\"epyt-gallery-list\"><div>Sorry, there was a YouTube error.<\/div><\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>What is Annotations in Kubernetes? There are two way using you can attach metadata to Kubernetes objects. labels annotations Kubernetes annotations is used to attach arbitrary non-identifying metadata to objects&#8230;. <\/p>\n","protected":false},"author":1,"featured_media":5143,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_joinchat":[],"footnotes":""},"categories":[4859],"tags":[4990,4860,4991],"class_list":["post-5134","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-kubernetes","tag-annotations","tag-kubernetes","tag-labels"],"_links":{"self":[{"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/posts\/5134","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/comments?post=5134"}],"version-history":[{"count":4,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/posts\/5134\/revisions"}],"predecessor-version":[{"id":25593,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/posts\/5134\/revisions\/25593"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/media\/5143"}],"wp:attachment":[{"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/media?parent=5134"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/categories?post=5134"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.devopsschool.com\/blog\/wp-json\/wp\/v2\/tags?post=5134"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}