{"id":517,"date":"2023-02-20T19:00:00","date_gmt":"2023-02-20T10:00:00","guid":{"rendered":"https:\/\/hirabay.net\/?p=517"},"modified":"2023-02-20T20:33:22","modified_gmt":"2023-02-20T11:33:22","slug":"%e3%80%90php-x-kubernetes%e3%80%91availability%e3%82%92%e6%84%8f%e8%ad%98%e3%81%97%e3%81%9fdeployment%e5%ae%9a%e7%be%a9","status":"publish","type":"post","link":"https:\/\/hirabay.net\/?p=517","title":{"rendered":"\u3010PHP x Kubernetes\u3011availability\u3092\u610f\u8b58\u3057\u305fdeployment\u5b9a\u7fa9"},"content":{"rendered":"\n<p>PHP\u3092Kubernetes\u4e0a\u3067\u7a3c\u50cd\u3055\u305b\u308b\u3068\u304d\u306b\u3001availability\u3092\u9ad8\u3081\u308b\u305f\u3081\u306e\u8a2d\u5b9a\u3092\u3044\u308d\u3044\u308d\u8abf\u3079\u305f\u306e\u3067\u307e\u3068\u3081\u3066\u304a\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"toc\"><br \/>\n<b>Warning<\/b>:  Undefined array key \"is_admin\" in <b>\/home\/c4179872\/public_html\/hirabay.net\/wp-content\/themes\/sango-theme\/library\/gutenberg\/dist\/classes\/Toc.php<\/b> on line <b>110<\/b><br \/>\n<br \/>\n<b>Warning<\/b>:  Undefined array key \"is_category_top\" in <b>\/home\/c4179872\/public_html\/hirabay.net\/wp-content\/themes\/sango-theme\/library\/gutenberg\/dist\/classes\/Toc.php<\/b> on line <b>115<\/b><br \/>\n<br \/>\n<b>Warning<\/b>:  Undefined array key \"is_top\" in <b>\/home\/c4179872\/public_html\/hirabay.net\/wp-content\/themes\/sango-theme\/library\/gutenberg\/dist\/classes\/Toc.php<\/b> on line <b>122<\/b><br \/>\n    <div id=\"toc_container\" class=\"sgb-toc--bullets js-smooth-scroll\">\n      <p class=\"toc_title\">\u76ee\u6b21 <\/p>\n      <ul class=\"toc_list\">\n  <li class=\"first\">\n    <a href=\"#i-0\">\u524d\u63d0<\/a>\n  <\/li>\n  <li>\n    <a href=\"#i-1\">\u7d50\u8ad6<\/a>\n  <\/li>\n  <li>\n    <a href=\"#i-2\">readinessProbe \/ livenessProbe<\/a>\n  <\/li>\n  <li class=\"last\">\n    <a href=\"#i-3\">preStop<\/a>\n  <\/li>\n<\/ul>\n\n      \n    <\/div><\/div><h2 class=\"wp-block-heading\" id=\"i-0\">\u524d\u63d0<\/h2>\n\n\n\n<p><code>httpd<\/code>\u30b3\u30de\u30f3\u30c9\u3067Apache\u3092\u8d77\u52d5\u3059\u308b\u306e\u3092\u60f3\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u8d77\u52d5\u30b3\u30de\u30f3\u30c9\u306f\u300c\/usr\/sbin\/httpd -D FOREGROUND\u300d\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u30dd\u30fc\u30c8\u306f\u300c80\u300d\u3067HTTP\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u53d7\u3051\u4ed8\u3051\u308b\u3082\u306e\u3068\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-1\">\u7d50\u8ad6<\/h2>\n\n\n\n<p>\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u3001<code>livenessProbe<\/code>, <code>readinessProbe<\/code>, <code>preStop<\/code>\u3092\u8a2d\u5b9a\u3057\u307e\u3057\u3087\u3046\uff01<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism undefined-numbers lang-yaml\" data-file=\"deployment.yaml\" data-lang=\"Yaml\"><code>apiVersion: apps\/v1\nkind: Deployment\nmetadata:\n  name: php-app\n  labels:\n    app: php-app\nspec:\n  replicas: 1\n  selector:\n    matchLabels:\n      app: php-app\n  template:\n    metadata:\n      labels:\n        app: php-app\n    spec:\n      containers:\n        - name: main\n          image: &lt;docker image&gt;\n          readinessProbe:\n            tcpSocket:\n              port: 80\n            initialDelaySeconds: 5\n            periodSeconds: 10\n          livenessProbe:\n            tcpSocket:\n              port: 80\n            initialDelaySeconds: 15\n            periodSeconds: 20\n          lifecycle:\n            preStop:\n              exec:\n                # cf. https:\/\/httpd.apache.org\/docs\/2.4\/stopping.html#gracefulstop\n                command: [ \"\/usr\/sbin\/httpd\", \"-k\", \"graceful-stop\" ]<\/code><\/pre><\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-2\">readinessProbe \/ livenessProbe<\/h2>\n\n\n\n<p>readinessProbe\u3068livenessProbe\u3067\u306f\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u304c\u51e6\u7406\u53ef\u80fd\u306a\u72b6\u614b\u304b\u3092\u30c1\u30a7\u30c3\u30af\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>PHP\u3067\u306fapache\u3055\u3048\u8d77\u52d5\u3057\u3066\u3044\u308c\u3070\u30a2\u30af\u30bb\u30b9\u53ef\u80fd\u306a\u72b6\u614b\u306a\u306f\u305a\u306a\u306e\u3067\u3001<br>TCP\u3067\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u30dd\u30fc\u30c8\uff08\u4f8b\u3067\u306f80\u756a\u30dd\u30fc\u30c8\uff09\u3068\u758e\u901a\u304c\u3067\u304d\u305f\u3089OK\u3068\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n<p><\/p><div class=\"memo \"><div class=\"memo_ttl dfont\"> \u30e1\u30e2<\/div>\u3082\u3057\u3001readinessProbe\u3068livenessProbe\u3092\u8a2d\u5b9a\u3057\u3066\u3044\u306a\u3044\u3068\uff1f<br>\n\u30fbApache\u8d77\u52d5\u307e\u3067\u306bHTTP\u30ea\u30af\u30a8\u30b9\u30c8\u304c\u5230\u9054\u3057\u3001\u4e00\u90e8\u30e6\u30fc\u30b6\u306b\u30a8\u30e9\u30fc\u3092\u8fd4\u3059\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<br>\n\u2192 readinessProbe\u3092\u8a2d\u5b9a\u3059\u308b\u3068\u3001\u758e\u901a\u304c\u3067\u304d\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u3066\u304b\u3089\u30b5\u30fc\u30d3\u30b9\u30a4\u30f3\u3055\u308c\u307e\u3059\u3002<br>\n\u30fb\u4f55\u304b\u3057\u3089\u306e\u539f\u56e0\u3067\u30ea\u30af\u30a8\u30b9\u30c8\u53d7\u4ed8\u4e0d\u53ef\u3068\u306a\u3063\u305f\u3068\u304d\u306b\u3001\u30a8\u30e9\u30fc\u3092\u8fd4\u3057\u7d9a\u3051\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<br>\n\u2192 livenessProve\u3092\u8a2d\u5b9a\u3059\u308b\u3068\u3001\u758e\u901a\u4e0d\u53ef\u3068\u306a\u3063\u305f\u3068\u304d\u306b\u30b5\u30fc\u30d3\u30b9\u30a2\u30a6\u30c8\u3055\u308c\u307e\u3059\u3002<\/div>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"i-3\">preStop<\/h2>\n\n\n\n<p>preStop\u3067\u306f\u3001HTTP\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u51e6\u7406\u3057\u5207\u3063\u3066\u304b\u3089\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u7d42\u4e86\u3059\u308b\u3088\u3046\u306b\u8a2d\u5b9a\u3092\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>httpd\u306b\u306f<code>-k graceful-stop<\/code>\u30aa\u30d7\u30b7\u30e7\u30f3\u3067Graceful Shutdown\u3092\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\uff01<\/p>\n\n\n<p><\/p><div class=\"memo \"><div class=\"memo_ttl dfont\"> \u30e1\u30e2<\/div>\u3082\u3057\u3001preStop\u3092\u8a2d\u5b9a\u3057\u3066\u3044\u306a\u3044\u3068\uff1f<br>\n\u30fb\u4f55\u304b\u3057\u3089\u306e\u8981\u56e0\u3067pod\u306e\u518d\u8d77\u52d5 \/ \u524a\u9664\u304c\u8d77\u304d\u308b\u3068\u3001HTTP\u30ea\u30af\u30a8\u30b9\u30c8\u306e\u51e6\u7406\u72b6\u6cc1\u306b\u3088\u3089\u305a\u5f37\u5236\u7d42\u4e86\u3068\u306a\u308a\u3001\u4e00\u90e8\u30e6\u30fc\u30b6\u306b\u30a8\u30e9\u30fc\u3092\u8fd4\u3059\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<br>\n\u2192 preStop\u3092\u8a2d\u5b9a\u3059\u308b\u3068HTTP\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u51e6\u7406\u3057\u5207\u3063\u3066\u304b\u3089\u7d42\u4e86\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\uff08\u30b3\u30de\u30f3\u30c9\u306e\u9078\u5b9a\u304c\u91cd\u8981\uff09<\/div>\n","protected":false},"excerpt":{"rendered":"<p>PHP\u3092Kubernetes\u4e0a\u3067\u7a3c\u50cd\u3055\u305b\u308b\u3068\u304d\u306b\u3001availability\u3092\u9ad8\u3081\u308b\u305f\u3081\u306e\u8a2d\u5b9a\u3092\u3044\u308d\u3044\u308d\u8abf\u3079\u305f\u306e\u3067\u307e\u3068\u3081\u3066\u304a\u304d\u307e\u3059\u3002 Warning: Undefined array key &#8220;is_admin&#8221; in \/ &#8230; <\/p>\n","protected":false},"author":1,"featured_media":518,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6],"tags":[81,86],"class_list":{"0":"post-517","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-6","8":"tag-kubernetes","9":"tag-php"},"jetpack_featured_media_url":"https:\/\/hirabay.net\/wp-content\/uploads\/2023\/02\/979a89fcbee78f56fce0638c46952ebf.png","_links":{"self":[{"href":"https:\/\/hirabay.net\/index.php?rest_route=\/wp\/v2\/posts\/517","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/hirabay.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/hirabay.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/hirabay.net\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/hirabay.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=517"}],"version-history":[{"count":3,"href":"https:\/\/hirabay.net\/index.php?rest_route=\/wp\/v2\/posts\/517\/revisions"}],"predecessor-version":[{"id":521,"href":"https:\/\/hirabay.net\/index.php?rest_route=\/wp\/v2\/posts\/517\/revisions\/521"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/hirabay.net\/index.php?rest_route=\/wp\/v2\/media\/518"}],"wp:attachment":[{"href":"https:\/\/hirabay.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=517"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/hirabay.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=517"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/hirabay.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=517"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}