{"id":33131,"date":"2023-04-05T01:32:17","date_gmt":"2024-03-01T18:48:53","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e7%a1%ae%e8%ae%a4kubernetes%e5%b0%b1%e7%bb%aa%e6%8e%a2%e9%92%88%e7%9a%84%e8%bf%90%e8%a1%8c%e6%83%85%e5%86%b5%e3%80%82\/"},"modified":"2024-04-29T21:57:55","modified_gmt":"2024-04-29T13:57:55","slug":"%e7%a1%ae%e8%ae%a4kubernetes%e5%b0%b1%e7%bb%aa%e6%8e%a2%e9%92%88%e7%9a%84%e8%bf%90%e8%a1%8c%e6%83%85%e5%86%b5%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e7%a1%ae%e8%ae%a4kubernetes%e5%b0%b1%e7%bb%aa%e6%8e%a2%e9%92%88%e7%9a%84%e8%bf%90%e8%a1%8c%e6%83%85%e5%86%b5%e3%80%82\/","title":{"rendered":"\u786e\u8ba4[Kubernetes]\u5c31\u7eea\u63a2\u9488\u7684\u8fd0\u884c\u60c5\u51b5"},"content":{"rendered":"

\u9996\u5148<\/h1>\n

\u65e2\u7136\u4e0a\u6b21\u5df2\u7ecf\u786e\u8ba4\u4e86Liveness Probe\u7684\u8fd0\u4f5c\u60c5\u51b5\uff0c\u8fd9\u6b21\u6211\u60f3\u786e\u8ba4\u4e00\u4e0bReadiness Probe\u7684\u8fd0\u4f5c\u60c5\u51b5\u3002<\/p>\n

\u6211\u60f3\u8bf7\u60a8\u53c2\u8003\u4e0a\u4e00\u6b21\u7684\u5185\u5bb9\uff0c\u4e86\u89e3Liveness Probe\u548cReadiness Probe\u4e4b\u95f4\u7684\u5dee\u5f02\u3001\u5065\u5eb7\u68c0\u67e5\u7684\u65b9\u5f0f\u4ee5\u53ca\u95f4\u9694\u3002<\/p>\n

\u786e\u8ba4[Kubernetes]\u7684\u5065\u5eb7\u68c0\u67e5\u662f\u5426\u6b63\u5e38\u8fd0\u884c<\/p>\n

\u786e\u8ba4\u64cd\u4f5c<\/h1>\n

\u5982\u679c\u6709\u4e24\u4e2aPod\uff0c\u5f53Readiness Probe\u68c0\u67e5\u6210\u529f\u65f6\uff0c\u6d41\u91cf\u5c06\u4ece\u8d1f\u8f7d\u5747\u8861\u5668\u4e2d\u8fdb\u884c\u5e73\u8861\u3002\uff08\u89c1\u4e0b\u56fe \u5de6\u4fa7\uff09
\n\u5982\u679c\u68c0\u67e5\u5931\u8d25\uff0c\u6d41\u91cf\u5c06\u88ab\u63a7\u5236\u5668\u7981\u6b62\u4ece\u8d1f\u8f7d\u5747\u8861\u5668\u6d41\u51fa\u3002\uff08\u89c1\u4e0b\u56fe \u53f3\u4fa7\uff09
\n\u6b64\u65f6\uff0c\u4e0eLiveness Probe\u4e0d\u540c\uff0cReadiness Probe\u4e0d\u4f1a\u91cd\u65b0\u542f\u52a8Pod\u3002<\/p>\n

\"image.png\"<\/div>\n

\u6211\u5e0c\u671b\u80fd\u591f\u4eb2\u81ea\u786e\u8ba4\u8fd9\u4e2a\u52a8\u4f5c\u3002<\/p>\n

\u6267\u884c<\/h2>\n

\u670d\u52a1\uff0cPod\u7684\u90e8\u7f72\u3002<\/h3>\n

\u9996\u5148\uff0c\u90e8\u7f72\u4e00\u4e2a\u6ca1\u6709\u8bbe\u7f6eLoadBalancer\u548cReadiness Probe\u7684Pod\u3002<\/p>\n

apiVersion<\/span>:<\/span> v1<\/span>\r\nkind<\/span>:<\/span> Service<\/span>\r\nmetadata<\/span>:<\/span>\r\n  name<\/span>:<\/span> load-balancer<\/span>\r\nspec<\/span>:<\/span>\r\n  ports<\/span>:<\/span>\r\n  -<\/span> name<\/span>:<\/span> load-balancer<\/span>\r\n    port<\/span>:<\/span> 8080<\/span>\r\n    protocol<\/span>:<\/span> TCP<\/span>\r\n    targetPort<\/span>:<\/span> 80<\/span>\r\n    nodePort<\/span>:<\/span> 30002<\/span>\r\n  selector<\/span>:<\/span>\r\n    app<\/span>:<\/span> app1<\/span>\r\n  type<\/span>:<\/span> LoadBalancer<\/span>\r\n<\/code><\/pre>\n
apiVersion<\/span>:<\/span> v1<\/span>\r\nkind<\/span>:<\/span> Pod<\/span>\r\nmetadata<\/span>:<\/span>\r\n  labels<\/span>:<\/span>\r\n    app<\/span>:<\/span> app1<\/span>\r\n  name<\/span>:<\/span> nginx<\/span>\r\nspec<\/span>:<\/span>\r\n  containers<\/span>:<\/span>\r\n  -<\/span> name<\/span>:<\/span> nginx<\/span>\r\n    image<\/span>:<\/span> nginx:latest<\/span>\r\n    ports<\/span>:<\/span>\r\n    -<\/span> containerPort<\/span>:<\/span> 80<\/span>\r\n<\/code><\/pre>\n
$ kubectl apply -f lb.yaml\r\nservice\/load-balancer created\r\n$ kubectl apply -f nginx.yaml\r\npod\/nginx created\r\n<\/code><\/pre>\n
\u4e0b\u4e00\u4e2a\u6b65\u9aa4\u662f\u90e8\u7f72\u5df2\u8bbe\u7f6e\u4e86Readiness Probe\u7684Pod\u3002
\n\u672c\u6b21\u7684\u8bbe\u7f6e\u5c06\u4f7f\u7528hostPath\u5c06worker\u8282\u70b9\u7684\/test\u6302\u8f7d\u5230\/check\uff0c\u5e76\u5c06\u5176\u4e0b\u7684testfile\u4f5c\u4e3a\u68c0\u67e5\u5bf9\u8c61\u3002
\n\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u68c0\u67e5\u5bf9\u8c61\u7684testfile\u5df2\u4e8b\u5148\u5728\u6bcf\u4e2aworker\u8282\u70b9\u4e0a\u521b\u5efa\u597d\u3002<\/p>\n
apiVersion<\/span>:<\/span> v1<\/span>\r\nkind<\/span>:<\/span> Pod<\/span>\r\nmetadata<\/span>:<\/span>\r\n  labels<\/span>:<\/span>\r\n    app<\/span>:<\/span> app1<\/span>\r\n  name<\/span>:<\/span> nginx-readiness<\/span>\r\nspec<\/span>:<\/span>\r\n  containers<\/span>:<\/span>\r\n  -<\/span> name<\/span>:<\/span> nginx-readiness<\/span>\r\n    image<\/span>:<\/span> nginx:latest<\/span>\r\n    ports<\/span>:<\/span>\r\n    -<\/span> containerPort<\/span>:<\/span> 80<\/span>\r\n    volumeMounts<\/span>:<\/span>\r\n    -<\/span> mountPath<\/span>:<\/span> \/check<\/span>\r\n      name<\/span>:<\/span> check-vol<\/span>\r\n    readinessProbe<\/span>:<\/span>\r\n      exec<\/span>:<\/span>\r\n        command<\/span>:<\/span>\r\n        -<\/span> cat<\/span>\r\n        -<\/span> \/check\/testfile<\/span>\r\n      initialDelaySeconds<\/span>:<\/span> 5<\/span>\r\n      periodSeconds<\/span>:<\/span> 5<\/span>\r\n      timeoutSeconds<\/span>:<\/span> 1<\/span>\r\n      successThreshold<\/span>:<\/span> 1<\/span>\r\n      failureThreshold<\/span>:<\/span> 1<\/span>\r\n  volumes<\/span>:<\/span>\r\n  -<\/span> name<\/span>:<\/span> check-vol<\/span>\r\n    hostPath<\/span>:<\/span>\r\n      path<\/span>:<\/span> \/test<\/span>\r\n      type<\/span>:<\/span> Directory<\/span>\r\n<\/code><\/pre>\n
$ kubectl apply -f readiness-exec.yaml\r\npod\/nginx-readiness created\r\n<\/code><\/pre>\n
\u6211\u60f3\u786e\u8ba4\u4e00\u4e0b\u5916\u90e8\u662f\u5426\u53ef\u4ee5\u8bbf\u95ee\uff0c\u6240\u4ee5\u5728\u6bcf\u4e2a\u5bb9\u5668\u7684index.html\u6587\u4ef6\u4e2d\u5199\u5165\u4e3b\u673a\u540d\uff0c\u4ee5\u4fbf\u77e5\u9053\u8d1f\u8f7d\u5747\u8861\u662f\u6307\u5411\u54ea\u4e2a\u5bb9\u5668\u7684\u3002<\/p>\n
$ kubectl exec -it nginx \/bin\/bash\r\nroot@nginx:\/# echo `hostname` > \/usr\/share\/nginx\/html\/index.html\r\nroot@nginx:\/# cat \/usr\/share\/nginx\/html\/index.html\r\nnginx\r\n<\/code><\/pre>\n
\u53e6\u4e00\u4e2aPod\u4e5f\u4f7f\u7528\u76f8\u540c\u7684\u6b65\u9aa4\u8bb0\u5f55\u4e3b\u673a\u540d\u3002<\/p>\n
\u786e\u8ba4\u52a8\u4f5c<\/h3>\n
\u4ee55\u79d2\u7684\u95f4\u9694\u4ece\u5916\u90e8\u8bbf\u95ee\u5230\u8d1f\u8f7d\u5747\u8861\u5668\u3002<\/p>\n
[client]$ while true; do  curl -s http:\/\/10.20.30.150:8080 ;sleep 5; done\r\nnginx-readiness\r\nnginx\r\nnginx-readiness\r\nnginx\r\nnginx-readiness\r\nnginx\r\nnginx-readiness\r\nnginx\r\n<\/code><\/pre>\n
\u8fd9\u4e2a\u65f6\u5019\u6709\u4e24\u4e2aPod\u8fdb\u884c\u8d1f\u8f7d\u5747\u8861\u3002<\/p>\n
\u8bf7\u786e\u5b9a\u90e8\u7f72\u4e86Pod\u7684\u8282\u70b9\uff0c\u5e76\u5c1d\u8bd5\u4ece\u5de5\u4f5c\u8282\u70b9\u4e0a\u5220\u9664testfile\u3002<\/p>\n
$ kubectl get pod -o wide\r\nNAME              READY   STATUS    RESTARTS   AGE     IP               NODE           NOMINATED NODE   READINESS GATES\r\nnginx             1\/1     Running   0          11m     192.168.79.99    k8s-worker01   <none>           <none>\r\nnginx-readiness   1\/1     Running   0          7m35s   192.168.69.247   k8s-worker02   <none>           <none>\r\n$ ssh k8s-worker02\r\n[worker02]$ sudo rm \/test\/testfile\r\n<\/code><\/pre>\n
\u90a3\u4e48\uff0c\u6211\u4eec\u53ef\u4ee5\u770b\u51fa\u53ea\u6709\u201cnginx\u201d\u5904\u4e8e\u8d1f\u8f7d\u5747\u8861\u72b6\u6001\u3002<\/p>\n
[client]$ while true; do  curl -s http:\/\/10.20.30.150:8080 ;sleep 5; done\r\nnginx-readiness\r\nnginx\r\nnginx-readiness\r\nnginx\r\n\u30fb\u30fb\u30fb\u3000# Readiness Probe\u304c\u5931\u6557\u2193\r\nnginx\r\nnginx\r\nnginx\r\nnginx\r\nnginx\r\nnginx\r\nnginx\r\nnginx\r\nnginx\r\n<\/code><\/pre>\n
\u6211\u5c1d\u8bd5\u5c06\u6d4b\u8bd5\u6587\u4ef6\u8fd8\u539f\u56de\u539f\u59cb\u72b6\u6001\u3002<\/p>\n
[worker02]$ sudo touch \/test\/testfile\r\n<\/code><\/pre>\n
\u518d\u6b21\uff0c\u5c06\u88ab\u5e73\u8861\u5206\u914d\u5230\u4e24\u4e2aPod\u4e2d\u3002<\/p>\n
[client]$ while true; do  curl -s http:\/\/10.20.30.150:8080 ;sleep 5; done\r\nnginx-readiness\r\nnginx\r\nnginx-readiness\r\nnginx\r\n\u30fb\u30fb\u30fb\u3000# Readiness Probe\u304c\u5931\u6557\u2193\r\nnginx\r\nnginx\r\nnginx\r\nnginx\r\nnginx\r\nnginx\r\n\u30fb\u30fb\u30fb\u3000# Readiness Probe\u304c\u518d\u3073\u6210\u529f\u2193\r\nnginx-readiness\r\nnginx\r\nnginx-readiness\r\nnginx\r\nnginx-readiness\r\nnginx\r\n<\/code><\/pre>\n
\u786e\u8ba4\u8fd9\u4e9bPod\u7684\u72b6\u6001\u53d8\u5316\u540e\uff0c\u60c5\u51b5\u5982\u4e0b\u3002<\/p>\n
$ kubectl get pod -w\r\nNAME              READY   STATUS    RESTARTS   AGE\r\nnginx             1\/1     Running   0          4m56s\r\nnginx-readiness   1\/1     Running   0          36s\r\nnginx-readiness   0\/1     Running   0          7m58s #testfile\u3092\u524a\u9664\u3057\u3001Readiness Probe\u304c\u5931\u6557\u3059\u308b\r\nnginx-readiness   1\/1     Running   0          9m58s #testfile\u3092\u5fa9\u5143\u3057\u3001Readiness Probe\u304c\u6210\u529f\u3059\u308b\r\n<\/code><\/pre>\n
\u4f60\u53ef\u4ee5\u770b\u5230 Pod \u4e0d\u518d\u5904\u4e8e READY \u72b6\u6001\uff0c\u4f46\u6ca1\u6709\u91cd\u65b0\u542f\u52a8\u3002<\/p>\n
\u901a\u8fc7HTTP\u83b7\u53d6\u8d44\u6e90\/\u8fdb\u884cTCP\u5957\u63a5\u5b57\u901a\u4fe1<\/h2>\n
\u5173\u4e8ehttpGet\u548ctcpSocket\u7684\u95ee\u9898\uff0c<\/p>\n
    \n
  • \n
      \u8a2d\u5b9a\u65b9\u6cd5\u306fLiveness Probe\u306e\u30de\u30cb\u30d5\u30a7\u30b9\u30c8\u306e\u300clivenessProbe\u300d\u3092\u300creadinessProbe\u300d\u306b\u5909\u66f4<\/ul>\n<\/li>\n<\/ul>\n
       <\/p>\n
        \u52d5\u4f5c\u306fReadiness Probe\u306eexec\u3068\u540c\u69d8<\/ul>\n
        \u56e0\u6b64\uff0c\u7ec6\u8282\u6211\u5c06\u7565\u8fc7\u4e0d\u63d0\u3002<\/p>\n
        \u603b\u7ed3<\/h1>\n
        \u6211\u5df2\u7ecf\u786e\u8ba4\u4e86\u4e0a\u4e00\u6b21\u548c\u8fd9\u4e00\u6b21\u5728Pod\u7684\u5065\u5eb7\u68c0\u67e5\u673a\u5236\u4e2d\u7684”Liveness Probe”\u548c”Readiness Probe”\u7684\u8fd0\u4f5c\u3002\u8fd9\u4e24\u4e2a\u90fd\u4e0d\u96be\u8bbe\u7f6e\uff0c\u4f46\u662f\u6839\u636e\u9700\u6c42\u6765\u8bbe\u8ba1\u68c0\u67e5\u4ec0\u4e48\u4ee5\u53ca\u5982\u4f55\u68c0\u67e5\u4f3c\u4e4e\u662f\u56f0\u96be\u7684\u3002<\/p>\n
        \u53e6\u5916\uff0cLiveness Probe\u548cReadiness Probe\u53ef\u4ee5\u540c\u65f6\u8bbe\u7f6e\uff0c\u56e0\u6b64\u9700\u8981\u5bf9\u7cfb\u7edf\u542f\u52a8\u65f6\u548c\u8fd0\u884c\u65f6\u7684\u68c0\u67e5\u8fdb\u884c\u533a\u5206\u8003\u8651\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
        \u9996\u5148 \u65e2\u7136\u4e0a\u6b21\u5df2\u7ecf\u786e\u8ba4\u4e86Liveness Probe\u7684\u8fd0\u4f5c\u60c5\u51b5\uff0c\u8fd9\u6b21\u6211\u60f3\u786e\u8ba4\u4e00\u4e0bReadiness Probe […]<\/p>\n","protected":false},"author":10,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-33131","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\n\u786e\u8ba4[Kubernetes]\u5c31\u7eea\u63a2\u9488\u7684\u8fd0\u884c\u60c5\u51b5 - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/\u786e\u8ba4kubernetes\u5c31\u7eea\u63a2\u9488\u7684\u8fd0\u884c\u60c5\u51b5\u3002\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u786e\u8ba4[Kubernetes]\u5c31\u7eea\u63a2\u9488\u7684\u8fd0\u884c\u60c5\u51b5\" \/>\n<meta property=\"og:description\" content=\"\u9996\u5148 \u65e2\u7136\u4e0a\u6b21\u5df2\u7ecf\u786e\u8ba4\u4e86Liveness Probe\u7684\u8fd0\u4f5c\u60c5\u51b5\uff0c\u8fd9\u6b21\u6211\u60f3\u786e\u8ba4\u4e00\u4e0bReadiness Probe […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/\u786e\u8ba4kubernetes\u5c31\u7eea\u63a2\u9488\u7684\u8fd0\u884c\u60c5\u51b5\u3002\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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