{"id":732,"date":"2017-09-18T23:23:37","date_gmt":"2017-09-18T15:23:37","guid":{"rendered":"http:\/\/www.ipcpu.com\/?p=732"},"modified":"2017-09-18T23:23:37","modified_gmt":"2017-09-18T15:23:37","slug":"kubernetes-rolling-update","status":"publish","type":"post","link":"https:\/\/c.ipcpu.com\/2017\/09\/kubernetes-rolling-update\/","title":{"rendered":"Kubernetes\u5b9e\u73b0\u6eda\u52a8\u5347\u7ea7(rolling update)"},"content":{"rendered":"
<\/div>\n

Kubernetes\u5b9e\u73b0\u6eda\u52a8\u5347\u7ea7(rolling update).md<\/p>\n

\u4e00\u3001\u6982\u8ff0<\/h2>\n

\u5728\u65b0\u7248\u7684Kubernetes\u5b98\u65b9\u63a8\u8350\u4f7f\u7528Deployment\u6765\u53d6\u4ee3Replication Controller(rc) \uff0c\u4e24\u8005\u95f4\u4e3b\u8981\u76f8\u540c\u70b9\u5305\u62ec\u786e\u4fdd\u5904\u5728\u670d\u52a1\u72b6\u6001\u7684Pod\u6570\u91cf(replicas)\u80fd\u6ee1\u8db3\u5148\u524d\u6240\u8bbe\u5b9a\u7684\u503c\u4ee5\u53ca\u652f\u63f4\u6eda\u52a8\u5347\u7ea7(Rolling update)\uff0c\u524d\u8005\u989d\u5916\u652f\u6301\u56de\u6eda(Roll back)\u7684\u673a\u5236\uff0c\u56e0\u6b64\u63a5\u4e0b\u6765\u4f1a\u4ecb\u7ecd\u5982\u4f55\u5229\u7528Deployment\u6765\u8fdb\u884c\u6eda\u52a8\u5347\u7ea7\u3002<\/p>\n

\u4e8c\u3001PODS\u3001REPLICA SETS\u3001DEPLOYMENT \u4e09\u8005\u5173\u7cfb\u56fe<\/h2>\n

<\/p>\n

\u4ece\u56fe\u4e2d\u53ef\u4ee5\u770b\u5230\u4e00\u4e2aDeployment\u638c\u7ba1\u4e00\u6216\u591a\u4e2aReplica Set \uff0c\u800c\u4e00\u4e2aReplica Set\u638c\u7ba1\u4e00\u6216\u591a\u4e2aPod \u3002<\/p>\n

\u4e09\u3001\u6eda\u52a8\u5347\u7ea7(ROLLING UPDATE)<\/h2>\n

\u4e3a\u4e86\u8ba9Kubernetes\u80fd\u591f\u6309\u7167\u6211\u4eec\u6240\u60f3\u7684\u65b9\u5f0f\u6765\u8fdb\u884c\u6eda\u52a8\u5347\u7ea7\uff0c\u9996\u5148\u6211\u4eec\u5fc5\u987b\u5728\u521a\u521a\u7684yaml\u6863\u5185\u7684spec\u52a0\u5165\u76f8\u5173\u5347\u7ea7\u7b56\u7565\u8bbe\u5b9a<\/p>\n

  1. spec<\/span>:<\/span><\/code><\/li>
  2.   replicas<\/span>:<\/span> <\/span>4<\/span><\/code><\/li>
  3.   selector<\/span>:<\/span><\/code><\/li>
  4.     matchLabels<\/span>:<\/span><\/code><\/li>
  5.       app<\/span>:<\/span> buniess<\/span><\/code><\/li>
  6.   strategy<\/span>:<\/span><\/code><\/li>
  7.     type<\/span>:<\/span> <\/span>RollingUpdate<\/span><\/code><\/li>
  8.     rollingUpdate<\/span>:<\/span><\/code><\/li>
  9.       maxSurge<\/span>:<\/span> <\/span>2<\/span><\/code><\/li>
  10.       maxUnavailable<\/span>:<\/span> <\/span>2<\/span><\/code><\/li>
  11.   minReadySeconds<\/span>:<\/span> <\/span>5<\/span><\/code><\/li>
  12.   <\/span>template<\/span>:<\/span><\/code><\/li><\/ol><\/pre>\n
    \u4ee5\u4e0b\u662f\u53c2\u6570\u7684\u4ecb\u7ecd\uff1a<\/p>\n
    \n
    minReadySeconds:    \u5bb9\u5668\u5185\u5e94\u7528\u7a0b\u5f0f\u7684\u542f\u52a8\u65f6\u95f4\uff0cKubernetes \u4f1a\u7b49\u5f85\u8bbe\u5b9a\u7684\u65f6\u95f4\u540e\u624d\u7ee7\u7eed\u8fdb\u884c\u5347\u7ea7\u6d41\u7a0b\uff0c\u5982\u679c\u6ca1\u6709\u6b64\u680f\u4f4d\u7684\u8bdd\uff0cKubernetes \u4f1a\u5047\u8bbe\u8be5\u5bb9\u5668\u4e00\u5f00\u5b8c\u540e\u5373\u53ef\u8fdb\u884c\u670d\u52a1 
    \n     maxSurge:    \u5347\u7ea7\u8fc7\u7a0b\u4e2d\u6700\u591a\u53ef\u4ee5\u6bd4\u539f\u5148\u8bbe\u5b9a\u6240\u591a\u51fa\u7684pod \u6570\u91cf\uff0c\u6b64\u680f\u4f4d\u53ef\u4ee5\u4e3a\u56fa\u5b9a\u503c\u6216\u662f\u6bd4\u4f8b(%)\u4f8b\u5982. maxSurge: 1\u3001replicas: 5\uff0c\u4ee3\u8868Kubernetes \u4f1a\u5148\u5f00\u597d1 \u4e2a\u65b0pod \u540e\u624d\u5220\u6389\u4e00\u4e2a\u65e7\u7684pod\uff0c\u6574\u4e2a\u5347\u7ea7\u8fc7\u7a0b\u4e2d\u6700\u591a\u4f1a\u67095+1 \u4e2apod 
    \n     maxUnavailable:    \u6700\u591a\u53ef\u4ee5\u6709\u51e0\u4e2apod \u5904\u5728\u65e0\u6cd5\u670d\u52a1\u7684\u72b6\u6001\uff0c\u5f53maxSurge\u4e0d\u4e3a\u96f6\u65f6\uff0c\u6b64\u680f\u4f4d\u4ea6\u4e0d\u53ef\u4e3a\u96f6\u3002\u4f8b\u5982. maxUnavailable: 1\uff0c\u4ee3\u8868Kubernetes \u6574\u4e2a\u5347\u7ea7\u8fc7\u7a0b\u4e2d\u6700\u591a\u4f1a\u67091 \u4e2apod \u5904\u5728\u65e0\u6cd5\u670d\u52a1\u7684\u72b6\u6001<\/p>\n<\/blockquote>\n
    \u4ee5\u4e0b\u6709\u51e0\u79cd\u65b9\u5f0f\u90fd\u53ef\u4ee5\u5b9e\u73b0\u6eda\u52a8\u5347\u7ea7<\/p>\n
    3.1    \u65b9\u6cd5\u4e00\uff1a\u4f7f\u7528kubectl set image<\/h4>\n
    1. # format<\/span><\/code><\/li>
    2. $ kubectl <\/span>set<\/span> image deployment <\/span><deployment><\/span> <\/span><container><\/span>=<<\/span>image<\/span>><\/span> <\/span>--<\/span>record<\/span><\/code><\/li>
    3. # example<\/span><\/code><\/li>
    4. kubectl <\/span>set<\/span> image deployment  buniess  buniess<\/span>=<\/span>reg<\/span>.<\/span>pcs<\/span>.<\/span>com<\/span>\/<\/span>google_containers<\/span>\/<\/span>wss<\/span>:<\/span>3.0<\/span> <\/span>--<\/span>record<\/span><\/code><\/li><\/ol><\/pre>\n
      3.2    \u65b9\u6cd5\u4e8c\uff1a\u4f7f\u7528kubectl replace<\/h4>\n
      \u7f16\u8f91\u539f\u5148\u7684\u914d\u7f6e\u6587\u4ef6\uff0c\u4fee\u6539\u955c\u50cf\u90e8\u5206<\/p>\n
      1. spec<\/span>:<\/span><\/code><\/li>
      2.   containers<\/span>:<\/span><\/code><\/li>
      3.   <\/span>-<\/span> name<\/span>:<\/span> nginx<\/span><\/code><\/li>
      4.     <\/span># newer image version<\/span><\/code><\/li>
      5.     image<\/span>:<\/span> nginx<\/span>:<\/span>1.11<\/span>.<\/span>5<\/span><\/code><\/li>
      6.     imagePullPolicy<\/span>:<\/span> <\/span>IfNotPresent<\/span><\/code><\/li>
      7. #@<\/span><\/code><\/li>
      8. #@\u7136\u540e\u6267\u884c\u66ff\u6362\u64cd\u4f5c<\/span><\/code><\/li>
      9. $ kubectl replace <\/span>-<\/span>f <\/span>new<\/span>-<\/span>nginx<\/span>.<\/span>yaml <\/span>--<\/span>record<\/span><\/code><\/li><\/ol><\/pre>\n
        3.3    \u67e5\u8be2\u5347\u7ea7\u72b6\u6001\u3001\u6682\u505c\u548c\u6062\u590d<\/h4>\n
        1. #@\u67e5\u8be2\u5347\u7ea7\u72b6\u51b5<\/span><\/code><\/li>
        2. $ kubectl rollout status deployment <\/span><deployment><\/span><\/code><\/li>
        3. <\/code><\/li>
        4. #@\u6682\u505c\u6eda\u52a8\u5347\u7ea7<\/span><\/code><\/li>
        5. $ kubectl rollout pause deployment <\/span><deployment><\/span><\/code><\/li>
        6. <\/code><\/li>
        7. #@\u6062\u590d\u6eda\u52a8\u5347\u7ea7<\/span><\/code><\/li>
        8. $ kubectl rollout resume deployment <\/span><deployment><\/span><\/code><\/li><\/ol><\/pre>\n
          \u56db\u3001\u56de\u6eda<\/h2>\n
          \u7531\u4e8e\u6211\u4eec\u4e4b\u524d\u7684\u64cd\u4f5c\u90fd\u52a0\u4e86\u2013record \u7684\u53c2\u6570\uff0c\u9019\u53c2\u6570\u4e3b\u8981\u662f\u544a\u77e5 Kubernetes \u8bb0\u5f55\u6b64\u6b21\u4e0b\u8fbe\u7684\u6307\u4ee4\uff0c\u6240\u4ee5\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u547d\u4ee4\u6765\u67e5\u770b<\/p>\n
          1. [<\/span>root@nhdta<\/span>-<\/span>1<\/span> buniess<\/span>]#<\/span> kubectl rollout history deployment buniess<\/span><\/code><\/li>
          2. deployments <\/span>\"buniess\"<\/span><\/code><\/li>
          3. REVISION  CHANGE<\/span>-<\/span>CAUSE<\/span><\/code><\/li>
          4. 1<\/span>         <\/span><none><\/span><\/code><\/li>
          5. 2<\/span>         <\/span><none><\/span><\/code><\/li>
          6. 3<\/span>         kubectl <\/span>set<\/span> image deployment buniess buniess<\/span>=<\/span>reg<\/span>.<\/span>pcs<\/span>.<\/span>com<\/span>\/<\/span>google_containers<\/span>\/<\/span>wss<\/span>:<\/span>3.0<\/span> <\/span>--<\/span>record<\/span>=<\/span>true<\/span><\/code><\/li>
          7. 4<\/span>         kubectl <\/span>set<\/span> image deployment buniess buniess<\/span>=<\/span>reg<\/span>.<\/span>pcs<\/span>.<\/span>com<\/span>\/<\/span>google_containers<\/span>\/<\/span>wss<\/span>:<\/span>4.0<\/span> <\/span>--<\/span>record<\/span>=<\/span>true<\/span><\/code><\/li><\/ol><\/pre>\n
            \u8fd9\u4e9b\u4e2a\u8bb0\u5f55\u80fd\u4fdd\u5b58\u591a\u5c11\u4e2a\u5462\uff1f\u9ed8\u8ba4\u662f\u5168\u90e8\u4fdd\u5b58\u7684\u3002\u53ef\u4ee5\u901a\u8fc7\u8bbe\u7f6e.spec.revisionHistoryLimit \u6765\u51b3\u5b9a\u8bb0\u5f55\u7684\u4e2a\u6570\uff0c\u4e00\u822c\u751f\u4ea7\u73af\u5883\u8bb0\u5f5510\u4e2a\u5de6\u53f3\u5c31\u5dee\u4e0d\u591a\u4e86\u3002\u8981\u4e0d\u7136\u53ef\u80fd\u4f1a\u88ab\u5237\u5c4f\u3002<\/p>\n
            1.   minReadySeconds<\/span>:<\/span> <\/span>5<\/span><\/code><\/li>
            2.   revisionHistoryLimit<\/span>:<\/span> <\/span>10<\/span><\/code><\/li><\/ol><\/pre>\n
              \u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u547d\u4ee4\uff0c\u6765\u56de\u6eda\u5230\u4e0a\u4e00\u4e2a\u7248\u672c\u6216\u8005\u7279\u5b9a\u7248\u672c<\/p>\n
              1. # to previous revision<\/span><\/code><\/li>
              2. $ kubectl rollout undo deployment <\/span><deployment><\/span><\/code><\/li>
              3. # to specific revision<\/span><\/code><\/li>
              4. $ kubectl rollout undo deployment <\/span><deployment><\/span> <\/span>--<\/span>to<\/span>-<\/span>revision<\/span>=<<\/span>revision<\/span>><\/span><\/code><\/li>
              5. # exmaple<\/span><\/code><\/li>
              6. $ kubectl rollout undo deployment buniess <\/span>--<\/span>to<\/span>-<\/span>revision<\/span>=<\/span>3<\/span><\/code><\/li><\/ol><\/pre>\n
                \u4e94\u3001\u7406\u89e3rollout pause\u548cresume\uff08\u8865\u5145\uff09<\/h2>\n
                \u6216\u8bb8\u5f88\u591a\u4eba\u81f3\u4eca\u8fd8\u4f1a\u8fd9\u4e48\u89c9\u5f97\uff1a\u6574\u4e2a\u6eda\u52a8\u66f4\u65b0\u7684\u8fc7\u7a0b\u4e2d\uff0c\u4e00\u65e6\u7528\u6237\u6267\u884c\u4e86kubectl rollout pause deploy\/frontend\u540e\uff0c\u6b63\u5728\u6267\u884c\u7684\u6eda\u52a8\u6d41\u7a0b\u5c31\u4f1a\u7acb\u523b\u505c\u6b62\uff0c\u7136\u540e\u7528\u6237\u6267\u884ckubectl rollout resume deploy\/frontend\u5c31\u4f1a\u7ee7\u7eed\u672a\u5b8c\u6210\u7684\u6eda\u52a8\u66f4\u65b0\u3002\u90a3\u4f60\u5c31\u5927\u9519\u7279\u9519\u4e86\uff01<\/p>\n
                kubectl rollout pause\u53ea\u4f1a\u7528\u6765\u505c\u6b62\u89e6\u53d1\u4e0b\u4e00\u6b21rollout\u3002\u4ec0\u4e48\u610f\u601d\u5462\uff1f \u4e0a\u9762\u63cf\u8ff0\u7684\u8fd9\u4e2a\u573a\u666f\uff0c\u6b63\u5728\u6267\u884c\u7684\u6eda\u52a8\u5386\u7a0b\u662f\u4e0d\u4f1a\u505c\u4e0b\u6765\u7684\uff0c\u800c\u662f\u4f1a\u7ee7\u7eed\u6b63\u5e38\u7684\u8fdb\u884c\u6eda\u52a8\uff0c\u76f4\u5230\u5b8c\u6210\u3002\u7b49\u4e0b\u4e00\u6b21\uff0c\u7528\u6237\u518d\u6b21\u89e6\u53d1rollout\u65f6\uff0cDeployment\u5c31\u4e0d\u4f1a\u771f\u7684\u53bb\u542f\u52a8\u6267\u884c\u6eda\u52a8\u66f4\u65b0\u4e86\uff0c\u800c\u662f\u88ab\u5361\u4f4f\u3002\u76f4\u5230\u6267\u884c\u4e86kubectl rollout resume\u539f\u6765\u88abpause\u5361\u4f4f\u7684rollout\u624d\u4f1a\u7ee7\u7eed\u8fdb\u884c\u3002\uff08\u88ab\u5361\u4f4f\u7684rollout\u5e76\u4e0d\u4f1a\u4e22\u5931\uff09<\/p>\n
                \u516d\u3001\u53c2\u8003\u8d44\u6599<\/h2>\n
                https:\/\/tachingchen.com\/tw\/blog\/Kubernetes-Rolling-Update-with-Deployment\/<\/a><\/p>\n
                http:\/\/samchu.logdown.com\/posts\/2462697-learn-how-to-use-kubernetes-deployment-to-rolling-update-in-thirty-second<\/a><\/p>\n
                http:\/\/blog.csdn.net\/WaltonWang\/article\/details\/77461697?locationNum=5&fps=1<\/a><\/p>\n
                \u8f6c\u8f7d\u8bf7\u6ce8\u660e\uff1aIPCPU-\u7f51\u7edc\u4e4b\u8def<\/a> » Kubernetes\u5b9e\u73b0\u6eda\u52a8\u5347\u7ea7(rolling update)<\/a><\/p>","protected":false},"excerpt":{"rendered":"
                Kubernetes\u5b9e\u73b0\u6eda\u52a8\u5347\u7ea7(rolling update).md \u4e00\u3001\u6982\u8ff0 \u5728\u65b0\u7248\u7684Kubernetes\u5b98\u65b9\u63a8\u8350\u4f7f\u7528Deployment\u6765\u53d6\u4ee3Replication Controller(rc) \uff0c\u4e24\u8005\u95f4\u4e3b\u8981\u76f8\u540c\u70b9\u5305\u62ec\u786e\u4fdd\u5904\u5728\u670d\u52a1\u72b6\u6001\u7684Pod\u6570\u91cf(replicas)\u80fd\u6ee1\u8db3\u5148\u524d\u6240\u8bbe\u5b9a\u7684\u503c\u4ee5\u53ca\u652f\u63f4\u6eda\u52a8\u5347\u7ea7(Rolling update)\uff0c\u524d\u8005\u989d\u5916\u652f\u6301\u56de\u6eda(Roll back)\u7684\u673a\u5236\uff0c\u56e0\u6b64\u63a5\u4e0b\u6765\u4f1a\u4ecb\u7ecd\u5982\u4f55\u5229\u7528Deployment\u6765\u8fdb\u884c\u6eda\u52a8\u5347\u7ea7\u3002 \u4e8c\u3001PODS\u3001REPLICA SETS\u3001DEPLOYMENT \u4e09\u8005\u5173\u7cfb\u56fe \u4ece\u56fe\u4e2d\u53ef\u4ee5\u770b\u5230\u4e00\u4e2aDeployment\u638c\u7ba1\u4e00\u6216\u591a\u4e2aReplica Set \uff0c\u800c\u4e00\u4e2aReplica Set\u638c\u7ba1\u4e00\u6216\u591a\u4e2aPod \u3002 \u4e09\u3001\u6eda\u52a8\u5347\u7ea7(ROLLING UPDATE) \u4e3a\u4e86\u8ba9Kubernetes\u80fd\u591f\u6309\u7167\u6211\u4eec\u6240\u60f3\u7684\u65b9\u5f0f\u6765\u8fdb\u884c\u6eda\u52a8\u5347\u7ea7\uff0c\u9996\u5148\u6211\u4eec\u5fc5\u987b\u5728\u521a\u521a\u7684yaml\u6863\u5185\u7684spec\u52a0\u5165\u76f8\u5173\u5347\u7ea7\u7b56\u7565\u8bbe\u5b9a spec: replicas: 4 selector: matchLabels: app: buniess strategy: type: RollingUpdate rollingUpdate: maxSurge: 2 maxUnavailable: 2 minReadySeconds: 5 template: \u4ee5\u4e0b\u662f\u53c2\u6570\u7684\u4ecb\u7ecd\uff1a minReadySeconds: \u5bb9\u5668\u5185\u5e94\u7528\u7a0b\u5f0f\u7684\u542f\u52a8\u65f6\u95f4\uff0cKubernetes \u4f1a\u7b49\u5f85\u8bbe\u5b9a\u7684\u65f6\u95f4\u540e\u624d\u7ee7\u7eed\u8fdb\u884c\u5347\u7ea7\u6d41\u7a0b\uff0c\u5982\u679c\u6ca1\u6709\u6b64\u680f\u4f4d\u7684\u8bdd\uff0cKubernetes \u4f1a\u5047\u8bbe\u8be5\u5bb9\u5668\u4e00\u5f00\u5b8c\u540e\u5373\u53ef\u8fdb\u884c\u670d\u52a1 maxSurge: \u5347\u7ea7\u8fc7\u7a0b\u4e2d\u6700\u591a\u53ef\u4ee5\u6bd4\u539f\u5148\u8bbe\u5b9a\u6240\u591a\u51fa\u7684pod \u6570\u91cf\uff0c\u6b64\u680f\u4f4d\u53ef\u4ee5\u4e3a\u56fa\u5b9a\u503c\u6216\u662f\u6bd4\u4f8b(%)\u4f8b\u5982. maxSurge: 1\u3001replicas: 5\uff0c\u4ee3\u8868Kubernetes \u4f1a\u5148\u5f00\u597d1 \u4e2a\u65b0pod \u540e\u624d\u5220\u6389\u4e00\u4e2a\u65e7\u7684pod\uff0c\u6574\u4e2a\u5347\u7ea7\u8fc7\u7a0b\u4e2d\u6700\u591a\u4f1a\u67095+1 \u4e2apod maxUnavailable: \u6700\u591a\u53ef\u4ee5\u6709\u51e0\u4e2apod \u5904\u5728\u65e0\u6cd5\u670d\u52a1\u7684\u72b6\u6001\uff0c\u5f53maxSurge\u4e0d\u4e3a\u96f6\u65f6\uff0c\u6b64\u680f\u4f4d\u4ea6\u4e0d\u53ef\u4e3a\u96f6\u3002\u4f8b\u5982. […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[3,13],"tags":[129],"_links":{"self":[{"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/posts\/732"}],"collection":[{"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/comments?post=732"}],"version-history":[{"count":0,"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/posts\/732\/revisions"}],"wp:attachment":[{"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/media?parent=732"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/categories?post=732"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/c.ipcpu.com\/wp-json\/wp\/v2\/tags?post=732"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}