{"id":33897,"date":"2023-02-03T20:24:28","date_gmt":"2023-01-08T05:40:53","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8kubernetes%e5%92%8credis-sentinel%e6%9e%84%e5%bb%ba%e8%87%aa%e5%8a%a8%e6%95%85%e9%9a%9c%e8%bd%ac%e7%a7%bb%e5%92%8c%e5%a4%8d%e5%88%b6%e9%87%8d%e5%bb%ba%e7%9a%84%e4%bc%9a%e8%af%9d-2\/"},"modified":"2024-04-29T12:59:36","modified_gmt":"2024-04-29T04:59:36","slug":"%e4%bd%bf%e7%94%a8kubernetes%e5%92%8credis-sentinel%e6%9e%84%e5%bb%ba%e8%87%aa%e5%8a%a8%e6%95%85%e9%9a%9c%e8%bd%ac%e7%a7%bb%e5%92%8c%e5%a4%8d%e5%88%b6%e9%87%8d%e5%bb%ba%e7%9a%84%e4%bc%9a%e8%af%9d-2","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8kubernetes%e5%92%8credis-sentinel%e6%9e%84%e5%bb%ba%e8%87%aa%e5%8a%a8%e6%95%85%e9%9a%9c%e8%bd%ac%e7%a7%bb%e5%92%8c%e5%a4%8d%e5%88%b6%e9%87%8d%e5%bb%ba%e7%9a%84%e4%bc%9a%e8%af%9d-2\/","title":{"rendered":"\u4f7f\u7528Kubernetes\u548cRedis Sentinel\u6784\u5efa\u81ea\u52a8\u6545\u969c\u8f6c\u79fb\u548c\u590d\u5236\u91cd\u5efa\u7684\u4f1a\u8bdd\u5b58\u50a8"},"content":{"rendered":"

\u4f60\u597d\u3002<\/p>\n

\u901a\u8fc7\u4e0eRedis Sentinel\u7ed3\u5408\u4f7f\u7528\uff0cRedis\u4f5c\u4e3a\u5185\u5b58\u6570\u636e\u5b58\u50a8\u53ef\u4ee5\u5b9e\u73b0\u81ea\u52a8\u6545\u969c\u8f6c\u79fb\u3002<\/p>\n

\u65e2\u7136\u5982\u6b64\uff0c\u6211\u89c9\u5f97\u53ef\u4ee5\u8f7b\u677e\u5730\u5728Kubernetes\u4e0a\u521b\u5efa\u5197\u4f59\u914d\u7f6e\uff0c\u4f46\u8fd8\u9700\u8981\u4e00\u4e9b\u6b65\u9aa4\uff0c\u6240\u4ee5\u6211\u603b\u7ed3\u4e86\u4e00\u4e0b\u6211\u5c1d\u8bd5\u7684\u65b9\u6cd5\u3002
\n\uff08\u53ea\u662f\u5728\u6211\u7684\u5355\u8282\u70b9\u73af\u5883\u4e2d\u7b80\u5355\u5c1d\u8bd5\u4e86\u4e00\u4e0b\uff0c\u6ca1\u6709\u8003\u8651\u5230\u751f\u4ea7\u8fd0\u8425\uff09<\/p>\n

\u8bf7\u7559\u610f\u4e8b\u9879<\/h2>\n

\u5728\u6211\u7684\u5b8c\u5168\u8bef\u89e3\u4e2d\uff0c\u6211\u66fe\u8ba4\u4e3a\u5c06Redis\u7684slave-read-only\u53c2\u6570\u8bbe\u7f6e\u4e3ano\u4f1a\u4f7f\u5f97\u5728\u4ece\u670d\u52a1\u5668\u4e0a\u7684\u5199\u64cd\u4f5c\u80fd\u591f\u540c\u6b65\u5230\u6574\u4e2a\u590d\u5236\u96c6\uff0c\u4f46\u5b9e\u9645\u4e0a\uff0c\u4ece\u670d\u52a1\u5668\u4e0a\u7684\u5199\u64cd\u4f5c\u53ea\u9650\u4e8e\u8be5\u4ece\u670d\u52a1\u5668\u3002\u56e0\u6b64\uff0c\u5728\u672c\u6587\u4ecb\u7ecd\u7684\u914d\u7f6e\u4e2d\uff0c\u5728\u6545\u969c\u8f6c\u79fb\u65f6\u9700\u8981\u5728\u5ba2\u6237\u7aef\u8fdb\u884c\u4e00\u4e9b\u64cd\u4f5c\u2026\u2026<\/p>\n

\u6211\u5beb\u5b8c\u4e86\u5e7e\u4e4e\u6240\u6709\u7684\u5167\u5bb9\u5f8c\u624d\u6ce8\u610f\u5230\uff0c\u4f46\u65e2\u7136\u6709\u4e86\uff0c\u6211\u9084\u662f\u767c\u8868\u4e00\u4e0b\u3002\u5e0c\u671b\u9019\u5c0d\u65bc\u4f7f\u7528Redis\u548cSentinel\u9032\u884c\u8a2d\u5b9a\u7684\u4eba\u6709\u6240\u5e6b\u52a9\u3002<\/p>\n

\u5173\u4e8eRedis\u548cRedis Sentinel<\/h2>\n

\u8bf7\u70b9\u51fb\u4ee5\u4e0b\u94fe\u63a5\uff1ahttps:\/\/redis.io\/<\/p>\n

Redis\u662f\u4e00\u79cd\u5f00\u6e90\u7684\u5185\u5b58\u6570\u636e\u5b58\u50a8\u7cfb\u7edf\uff0c\u5728AWS\u3001GCP\u3001Azure\u7b49\u516c\u53f8\u4e2d\u4e5f\u63d0\u4f9b\u4e86\u6258\u7ba1\u670d\u52a1\u3002
\n\uff08\u4ece\u8fd9\u4e2a\u610f\u4e49\u4e0a\u8bf4\uff0c\u6211\u4eec\u53ef\u80fd\u4f1a\u8003\u8651\u662f\u5426\u9700\u8981\u81ea\u5df1\u6784\u5efa\u5197\u4f59\u7ed3\u6784\uff0c\u4f46\u4f5c\u4e3a\u5de5\u7a0b\u5e08\uff0c\u6211\u4eec\u9996\u5148\u60f3\u5c1d\u8bd5\u4e00\u4e0b\uff0c\u5bf9\u5427\uff1f\uff09<\/p>\n

\u5728Redis\u4e2d\uff0c\u60a8\u53ef\u4ee5\u4f7f\u7528\u6807\u51c6\u529f\u80fd\u6765\u914d\u7f6e\u4e3b\u4ece\u590d\u5236\u3002Redis\u7684\u590d\u5236\u5141\u8bb8\u4ece\u8282\u70b9\u8fdb\u884c\u5199\u5165\u3002<\/p>\n

Redis Sentinel\u7684\u529f\u80fd\u5c31\u662f\u4f7f\u7528\u5355\u72ec\u7684\u76d1\u89c6\u8fdb\u7a0b\u6765\u5b9e\u73b0\u81ea\u52a8\u5bb9\u9519\uff0c\u5f53\u4e3b\u8282\u70b9\u53d1\u751f\u6545\u969c\u65f6\uff0c\u6ca1\u6709\u201c\u5c06\u4ece\u8282\u70b9\u664b\u5347\u4e3a\u4e3b\u8282\u70b9\u201d\u7684\u6545\u969c\u8f6c\u79fb\u529f\u80fd\u3002<\/p>\n

\u5b8c\u6210\u7684\u7ec4\u5408\u51fa\u73b0\u4e86<\/h2>\n

\u4ee5\u4e0b\u5f62\u6210\u5982\u4e0b\u3002<\/p>\n

\"k8s\u69cb\u6210.png\"<\/div>\n

Redis\u590d\u5236\u901a\u8fc7StatefulSet\u7684\u987a\u5e8f\u4fdd\u8bc1\uff0c\u5c06\u7b2c\u4e00\u4e2a\u542f\u52a8\u7684pod\u914d\u7f6e\u4e3a\u4e3b\u8282\u70b9\u3002<\/p>\n

Redis Sentinel \u5728\u4e00\u4e2a\u670d\u52a1\u5668\u4e0a\u542f\u52a83\u4e2a\u8fdb\u7a0b\u4e5f\u6ca1\u6709\u95ee\u9898\uff0c\u4f46\u662f\u5728\u90e8\u7f72\u65f6\u653e\u7f6e\u66f4\u52a0\u7b80\u5355\uff0c\u6240\u4ee5\u6211\u4eec\u9009\u62e9\u4e86\u8fd9\u79cd\u65b9\u5f0f\u3002<\/p>\n

\u4f7f\u7528Redis Sentinel\u7684\u4e8b\u4ef6\u89e6\u53d1\u5668\uff0c\u5728\u6545\u969c\u5207\u6362\u65f6\u66f4\u65b0\u5f53\u524d\u4e3b\u673aIP\u5230\u5171\u4eab\u5b58\u50a8\u4e2d\uff0c\u8fd9\u662f\u91cd\u70b9\u3002<\/p>\n

\u73af\u5883<\/h2>\n
    \n
  • \n
      Docker Desktop v20.10.7<\/ul>\n<\/li>\n<\/ul>\n

       <\/p>\n

        \n
      • \n
          Kubernetes on Docker Desktop v1.21.2<\/ul>\n<\/li>\n<\/ul>\n

           <\/p>\n

            Redis 6.2.6<\/ul>\n

            \u81ea\u52a8\u6545\u969c\u8f6c\u79fb\u8bbe\u7f6e<\/h2>\n

            \u6e90\u4ee3\u7801\u5df2\u7ecf\u4e0a\u4f20\u81f3GitHub\u3002<\/p>\n

            Redis\u7684\u6838\u5fc3<\/h3>\n

            Kubernetes\u6e05\u5355\u6587\u4ef6<\/h4>\n

            Redis\u672c\u4f53\u7684Pod\u955c\u50cf\u662f\u57fa\u4e8eredis\u5b98\u65b9\u955c\u50cf\uff0c\u5e76\u5305\u542b\u4e86\u4e0b\u9762\u63d0\u5230\u7684\u914d\u7f6e\u6587\u4ef6\u548c\u542f\u52a8\u811a\u672c\u3002<\/p>\n

            \u7531\u4e8e\u4f7f\u7528\u672c\u5730\u4e3b\u673a\u6765\u4fdd\u5b58\u4e3b\u8282\u70b9\u4fe1\u606f\uff0c\u56e0\u6b64\u9700\u8981\u8003\u8651\u591a\u8282\u70b9\u652f\u6301\u3002<\/p>\n

            apiVersion<\/span>:<\/span> v1<\/span>\r\nkind<\/span>:<\/span> PersistentVolume<\/span>\r\nmetadata<\/span>:<\/span>\r\n  name<\/span>:<\/span> session-store-shared-pv<\/span>\r\n  namespace<\/span>:<\/span> myapp<\/span>\r\n  labels<\/span>:<\/span>\r\n    app<\/span>:<\/span> myapp<\/span>\r\n    type<\/span>:<\/span> storage<\/span>\r\n    subtype<\/span>:<\/span> shared<\/span>\r\nspec<\/span>:<\/span>\r\n  storageClassName<\/span>:<\/span> slow<\/span>\r\n  capacity<\/span>:<\/span>\r\n    storage<\/span>:<\/span> 1Gi<\/span>\r\n  accessModes<\/span>:<\/span>\r\n  -<\/span> ReadWriteMany<\/span>\r\n  hostPath<\/span>:<\/span>\r\n    path<\/span>:<\/span> \/run\/desktop\/mnt\/host\/c\/Users\/takah\/project\/session-store<\/span>\r\n    type<\/span>:<\/span> Directory<\/span>\r\n---<\/span>\r\napiVersion<\/span>:<\/span> v1<\/span>\r\nkind<\/span>:<\/span> PersistentVolumeClaim<\/span>\r\nmetadata<\/span>:<\/span>\r\n  name<\/span>:<\/span> session-store-shared-pvc<\/span>\r\n  namespace<\/span>:<\/span> myapp<\/span>\r\nspec<\/span>:<\/span>\r\n  resources<\/span>:<\/span>\r\n    requests<\/span>:<\/span>\r\n      storage<\/span>:<\/span> 1Gi<\/span>\r\n  volumeMode<\/span>:<\/span> Filesystem<\/span>\r\n  accessModes<\/span>:<\/span>\r\n    -<\/span> ReadWriteMany<\/span>\r\n  storageClassName<\/span>:<\/span> slow<\/span>\r\n  selector<\/span>:<\/span>\r\n    matchLabels<\/span>:<\/span>\r\n      app<\/span>:<\/span> myapp<\/span>\r\n      type<\/span>:<\/span> storage<\/span>\r\n      subtype<\/span>:<\/span> shared<\/span>\r\n---<\/span>\r\napiVersion<\/span>:<\/span> apps\/v1<\/span>\r\nkind<\/span>:<\/span> StatefulSet<\/span>\r\nmetadata<\/span>:<\/span>\r\n  name<\/span>:<\/span> session-store<\/span>\r\n  namespace<\/span>:<\/span> myapp<\/span>\r\nspec<\/span>:<\/span>\r\n  selector<\/span>:<\/span>\r\n    matchLabels<\/span>:<\/span>\r\n      app<\/span>:<\/span> myapp<\/span>\r\n      type<\/span>:<\/span> session-store<\/span>\r\n  serviceName<\/span>:<\/span> session-store-svc<\/span>\r\n  replicas<\/span>:<\/span> 3<\/span>\r\n  template<\/span>:<\/span>\r\n    metadata<\/span>:<\/span>\r\n      labels<\/span>:<\/span>\r\n        app<\/span>:<\/span> myapp<\/span>\r\n        type<\/span>:<\/span> session-store<\/span>\r\n        kube-svc<\/span>:<\/span> session-store-svc<\/span>\r\n      namespace<\/span>:<\/span> myapp<\/span>\r\n    spec<\/span>:<\/span>\r\n      containers<\/span>:<\/span>\r\n      -<\/span> name<\/span>:<\/span> redis<\/span>\r\n        image<\/span>:<\/span> session-store<\/span>\r\n        imagePullPolicy<\/span>:<\/span> Never<\/span>\r\n        ports<\/span>:<\/span>\r\n          -<\/span> containerPort<\/span>:<\/span> 6379<\/span>\r\n            name<\/span>:<\/span>  redis<\/span>\r\n        command<\/span>:<\/span>\r\n        -<\/span> \"<\/span>\/scripts\/entrypoint.sh\"<\/span>\r\n        volumeMounts<\/span>:<\/span>\r\n          -<\/span> name<\/span>:<\/span>  shared-volume<\/span>\r\n            mountPath<\/span>:<\/span> \/redis\/share<\/span>\r\n      volumes<\/span>:<\/span>\r\n        -<\/span> name<\/span>:<\/span>  shared-volume<\/span>\r\n          persistentVolumeClaim<\/span>:<\/span>\r\n            claimName<\/span>:<\/span> session-store-shared-pvc<\/span>\r\n---<\/span>\r\nkind<\/span>:<\/span> Service<\/span>\r\napiVersion<\/span>:<\/span> v1<\/span>\r\nmetadata<\/span>:<\/span>\r\n  name<\/span>:<\/span>  session-store-svc<\/span>\r\n  namespace<\/span>:<\/span> myapp<\/span>\r\nspec<\/span>:<\/span>\r\n  selector<\/span>:<\/span>\r\n    app<\/span>:<\/span>  myapp<\/span>\r\n    type<\/span>:<\/span> session-store<\/span>\r\n  type<\/span>:<\/span>  ClusterIP<\/span>\r\n  clusterIP<\/span>:<\/span> None<\/span>\r\n  ports<\/span>:<\/span>\r\n  -<\/span> name<\/span>:<\/span>  redis<\/span>\r\n    port<\/span>:<\/span>  6379<\/span>\r\n    targetPort<\/span>:<\/span>  6379<\/span>\r\n<\/code><\/pre>\n
            \u8bbe\u7f6e\u6587\u4ef6<\/h4>\n
            \u8fd9\u662f\u4e00\u4e2a\u7528\u4e8eRedis\u914d\u7f6e\u6587\u4ef6\u7684\u6a21\u677f\u3002\u4e3a\u4e86\u63a5\u53d7\u5916\u90e8\u8fde\u63a5\uff0c\u5c06\u5176\u8bbe\u4e3abind 0.0.0.0\u3002<\/p>\n
            \u5728\u53d7\u63a7\u673a\u4e2d\uff0c\u6211\u4eec\u5c06\u5728\u542f\u52a8\u811a\u672c\u4e2d\u5bf9\u8be5\u6587\u4ef6\u8fdb\u884c\u914d\u7f6e\u6dfb\u52a0\u3002<\/p>\n
            daemonize<\/span> no<\/span>\r\nbind<\/span> 0<\/span>.0<\/span>.0<\/span>.0<\/span>\r\nport<\/span> 6379<\/span>\r\n<\/code><\/pre>\n
            \u542f\u52a8\u811a\u672c<\/h4>\n
            \u8fd9\u662fRedis\u7684\u5165\u53e3\u70b9\u3002
            \n\u5728\u521d\u59cb\u914d\u7f6e\u4e2d\uff0c\u7531\u4e8e\u5171\u4eab\u5b58\u50a8\u6ca1\u6709\u521b\u5efa\u4e3b\u8282\u70b9\u4fe1\u606f\uff0c\u56e0\u6b64\u5728\u8fd9\u79cd\u60c5\u51b5\u4e0b\u8981\u5c06\u81ea\u5df1\u7684IP\u5199\u5165\u3002<\/p>\n
            \u9664\u6b64\u4e4b\u5916\uff0c\u5b83\u4f1a\u4ece\u5df2\u5b58\u5728\u7684\u4e3b\u673a\u4fe1\u606f\u4e2d\u8bfb\u53d6IP\uff0c\u5e76\u4ee5\u4ece\u673a\u7684\u8eab\u4efd\u53c2\u4e0e\u3002<\/p>\n
            Redis Sentinel\u9ed8\u8ba4\u5728\u4e3b\u8282\u70b9\u4e0b\u7ebf30\u79d2\u540e\u8fdb\u884c\u6545\u969c\u8f6c\u79fb\u5224\u65ad\u3002
            \n\u800cStatefulSet\u5728\u68c0\u6d4b\u5230Pod\u5f02\u5e38\u540e\u7acb\u5373\u91cd\u65b0\u5206\u914d\u65b0\u7684IP\u5730\u5740\u7ed9Pod\uff0c\u56e0\u6b64Pod\u7684\u91cd\u65b0\u5206\u914d\u53ef\u80fd\u4f1a\u6bd4\u6545\u969c\u8f6c\u79fb\u5224\u65ad\u66f4\u65e9\u8fdb\u884c\uff0c\u5bfc\u81f4\u5728\u5171\u4eab\u5b58\u50a8\u4e0a\u7684\u4e3b\u8282\u70b9\u4fe1\u606f\u66f4\u65b0\u4e4b\u524d\uff0c\u65e7\u7684\u4e3b\u8282\u70b9IP\u5730\u5740\u5df2\u7ecf\u52a0\u5165\u5230\u4ece\u8282\u70b9\u4e2d\u3002<\/p>\n
            \u4e3a\u4e86\u907f\u514d\u8fd9\u79cd\u60c5\u51b5\uff0c\u6211\u4eec\u5728\u5165\u53e3\u70b9\u5904\u8bbe\u7f6e\u4e8630\u79d2\u7684\u7b49\u5f85\u65f6\u95f4\u3002<\/p>\n
            \r\n#!\/bin\/bash<\/span>\r\n#!\/bin\/bash<\/span>\r\nset<\/span> -e<\/span>\r\n\r\nif<\/span> [[<\/span> -z<\/span> ${<\/span>SHARED_MASTER_INFO_FILE<\/span>}<\/span> ]]<\/span>;<\/span> then\r\n    <\/span>export <\/span>SHARED_MASTER_INFO_FILE<\/span>=<\/span>\/redis\/share\/master\r\nfi<\/span>\r\n\r\n# master\u3067\u518d\u8d77\u52d5\u3055\u308c\u305f\u5834\u5408,Sentinel\u306e\u30d5\u30a7\u30a4\u30eb\u30aa\u30fc\u30d0\u30fc\u3092\u8ffd\u3044\u8d8a\u3057\u3066\u3057\u307e\u3046\u53ef\u80fd\u6027\u304c\u3042\u308b\u305f\u3081<\/span>\r\n# \u8d77\u52d5\u307e\u306730\u79d2\u5f85\u6a5f\uff08Sentinel\u306e\u30d5\u30a7\u30a4\u30eb\u30aa\u30fc\u30d0\u30fc\u5224\u65ad\u3059\u308b\u307e\u3067\u306e\u5f85\u6a5f\u6642\u9593\u304c\u30c7\u30d5\u30a9\u30eb\u30c830\u79d2\uff09<\/span>\r\necho<\/span> \"waiting for start in 30 seconds...\"<\/span>\r\nsleep <\/span>30\r\n\r\nif<\/span> [[<\/span> $(<\/span>hostname<\/span>)<\/span> =<\/span>~ (<\/span>.+)<\/span>-([<\/span>0-9]+)<\/span>$ <\/span>]]<\/span>;<\/span> then\r\n    <\/span>podname<\/span>=<\/span>${<\/span>BASH_REMATCH<\/span>[1]<\/span>}<\/span>\r\n    ordinal<\/span>=<\/span>${<\/span>BASH_REMATCH<\/span>[2]<\/span>}<\/span>\r\n    if<\/span> [[<\/span> ${<\/span>ordinal<\/span>}<\/span> -eq<\/span> 0 ]]<\/span> &&<\/span> [[<\/span> !<\/span> -f<\/span> ${<\/span>SHARED_MASTER_INFO_FILE<\/span>}<\/span> ]]<\/span>;<\/span> then<\/span>\r\n        # \u30de\u30b9\u30bf\u30fc\u306e\u5834\u5408\u306f\u5171\u6709\u30b9\u30c8\u30ec\u30fc\u30b8\u306e\u30d5\u30a1\u30a4\u30eb\u306bIP\u30a2\u30c9\u30ec\u30b9\u3092\u66f8\u304d\u8fbc\u3080<\/span>\r\n        master_ip<\/span>=<\/span>$(<\/span>hostname<\/span> -i<\/span>)<\/span>\r\n        echo<\/span> \"This is master, set own ip: <\/span>${<\/span>master_ip<\/span>}<\/span>\"<\/span>\r\n        echo<\/span> ${<\/span>master_ip<\/span>}<\/span> >><\/span> ${<\/span>SHARED_MASTER_INFO_FILE<\/span>}<\/span>\r\n    else<\/span>\r\n        # \u30b9\u30ec\u30fc\u30d6\u306e\u5834\u5408\u306f\u30de\u30b9\u30bf\u30fc\u306eIP\u30a2\u30c9\u30ec\u30b9\u3092\u6307\u5b9a\u3057\u3066slaveof\u3092\u8a2d\u5b9a<\/span>\r\n        master_ip<\/span>=<\/span>$(<\/span>cat<\/span> ${<\/span>SHARED_MASTER_INFO_FILE<\/span>}<\/span>)<\/span>\r\n        echo<\/span> \"This is slave, use master info file: <\/span>${<\/span>master_ip<\/span>}<\/span>\"<\/span>\r\n        echo<\/span> \"slaveof <\/span>${<\/span>master_ip<\/span>}<\/span> 6379\"<\/span> >><\/span> ${<\/span>REDIS_CONF<\/span>}<\/span>\r\n    fi\r\n    <\/span>redis-server ${<\/span>REDIS_CONF<\/span>}<\/span>\r\nfi<\/span>\r\n<\/code><\/pre>\n
            Redis\u54e8\u5175<\/h3>\n
            \u63a5\u4e0b\u6765\u662fRedis Sentinel\u7684\u5404\u79cd\u914d\u7f6e\u3002<\/p>\n
            Kubernetes\u914d\u7f6e\u6587\u4ef6<\/h4>\n
            Redis Sentinel\u662f\u4e00\u4e2a\u81ea\u5b9a\u4e49\u955c\u50cf\uff0c\u57fa\u4e8eRedis\u5b98\u65b9\u63d0\u4f9b\u7684\u5165\u53e3\u70b9\u548c\u4e8b\u4ef6\u901a\u77e5\u811a\u672c\uff0c\u8fd8\u5305\u542b\u914d\u7f6e\u6587\u4ef6\u3002
            \n\u5728Deployment\u7684Pod\u4e2d\u4f7f\u7528\u7684PVC\u662f\u4e4b\u524d\u5b9a\u4e49\u7684\u90a3\u4e2a\u3002<\/p>\n
            \u5728initContainers\u4e2d\uff0c\u7b49\u5f85\u7b2c\u4e00\u4e2aRedis\u542f\u52a8\uff0c\u5373\u7b49\u5f85\u5171\u4eab\u5b58\u50a8\u7684\u4e3b\u8282\u70b9\u4fe1\u606f\u88ab\u5199\u5165\u3002<\/p>\n
            apiVersion<\/span>:<\/span> apps\/v1<\/span>\r\nkind<\/span>:<\/span> Deployment<\/span>\r\nmetadata<\/span>:<\/span>\r\n  name<\/span>:<\/span>  session-store-redis-sentinel<\/span>\r\n  namespace<\/span>:<\/span> myapp<\/span>\r\n  labels<\/span>:<\/span>\r\n    app<\/span>:<\/span> myapp<\/span>\r\n    type<\/span>:<\/span>  session-store-sidecar<\/span>\r\nspec<\/span>:<\/span>\r\n  replicas<\/span>:<\/span> 3<\/span>\r\n  strategy<\/span>:<\/span>\r\n    rollingUpdate<\/span>:<\/span>\r\n      maxSurge<\/span>:<\/span> 1<\/span>\r\n      maxUnavailable<\/span>:<\/span> 1<\/span>\r\n    type<\/span>:<\/span> RollingUpdate<\/span>\r\n  selector<\/span>:<\/span>\r\n    matchLabels<\/span>:<\/span>\r\n        app<\/span>:<\/span> myapp<\/span>\r\n        type<\/span>:<\/span>  session-store-sidecar<\/span>\r\n  template<\/span>:<\/span>\r\n    metadata<\/span>:<\/span>\r\n      labels<\/span>:<\/span>\r\n        app<\/span>:<\/span> myapp<\/span>\r\n        type<\/span>:<\/span>  session-store-sidecar<\/span>\r\n    spec<\/span>:<\/span>\r\n      initContainers<\/span>:<\/span>\r\n      -<\/span> name<\/span>:<\/span> wait-container<\/span>\r\n        image<\/span>:<\/span> redis-sentinel<\/span>\r\n        imagePullPolicy<\/span>:<\/span> Never<\/span>\r\n        command<\/span>:<\/span> [<\/span>'<\/span>sh'<\/span>,<\/span>'<\/span>-c'<\/span>,<\/span>'<\/span>until<\/span> [<\/span> -f<\/span> \/redis\/share\/master<\/span> ];<\/span> do<\/span> echo<\/span> waiting<\/span> for<\/span> redis<\/span> server...<\/span> >><\/span> \/redis\/share\/sentinel.log;<\/span> cat<\/span> \/redis\/share\/master<\/span> >><\/span> \/redis\/share\/sentinel.log;<\/span> sleep<\/span> 10;<\/span> done'<\/span>]<\/span>\r\n        volumeMounts<\/span>:<\/span>\r\n          -<\/span> name<\/span>:<\/span>  shared-volume<\/span>\r\n            mountPath<\/span>:<\/span> \/redis\/share<\/span>\r\n      containers<\/span>:<\/span>\r\n      -<\/span> name<\/span>:<\/span> redis-sentinel<\/span>\r\n        image<\/span>:<\/span> redis-sentinel<\/span>\r\n        imagePullPolicy<\/span>:<\/span> Never<\/span>\r\n        command<\/span>:<\/span>\r\n        -<\/span> \"<\/span>\/scripts\/entrypoint-sentinel.sh\"<\/span>\r\n        env<\/span>:<\/span>\r\n        -<\/span> name<\/span>:<\/span> SHARED_MASTER_INFO_FILE<\/span>\r\n          value<\/span>:<\/span> \/redis\/share\/master<\/span>\r\n        ports<\/span>:<\/span>\r\n          -<\/span> containerPort<\/span>:<\/span> 23679<\/span>\r\n            name<\/span>:<\/span>  sentinel<\/span>\r\n        volumeMounts<\/span>:<\/span>\r\n          -<\/span> name<\/span>:<\/span>  shared-volume<\/span>\r\n            mountPath<\/span>:<\/span> \/redis\/share<\/span>\r\n      volumes<\/span>:<\/span>\r\n        -<\/span> name<\/span>:<\/span>  shared-volume<\/span>\r\n          persistentVolumeClaim<\/span>:<\/span>\r\n            claimName<\/span>:<\/span> session-store-shared-pvc<\/span>\r\n<\/code><\/pre>\n
            \u8bbe\u5b9a\u6587\u4ef6<\/h4>\n
            \u8fd9\u662f\u5728\u542f\u52a8Sentinel\u65f6\u6307\u5b9a\u7684\u914d\u7f6e\u6587\u4ef6\u3002\u901a\u8fc7\u8bbe\u7f6eSentinel\u901a\u77e5\u811a\u672c\uff0c\u53ef\u4ee5\u5728Sentinel\u4e8b\u4ef6\u53d1\u751f\u65f6\u542f\u52a8\u811a\u672c\u3002<\/p>\n
            \u5728\u542f\u52a8\u811a\u672c\u4e2d\u5c06\u76d1\u89c6Redis\u4e3b\u8282\u70b9\u4fe1\u606f\u9644\u52a0\u5230\u6b64\u914d\u7f6e\u6587\u4ef6\u3002<\/p>\n
            daemonize<\/span> no<\/span>\r\nprotected<\/span>-mode<\/span> no<\/span>\r\nport<\/span> 26379<\/span>\r\npidfile<\/span> \/redis<\/span>\/sentinel<\/span>.pid<\/span>\r\nlogfile<\/span> \/redis<\/span>\/sentinel<\/span>.log<\/span>\r\nsentinel<\/span> notification<\/span>-script<\/span> mymaster<\/span> \/scripts<\/span>\/notify<\/span>.sh<\/span>\r\n<\/code><\/pre>\n
            \u542f\u52a8\u811a\u672c<\/h4>\n
            \u5728\u4e2d\u6587\u4e2d\uff0c\u4f5c\u4e3a\u552f\u4e00\u7684\u9009\u9879\uff0c\u7ed9\u5b9a\u7684\u53e5\u5b50\u53ef\u4ee5\u8fd9\u6837\u8868\u8fbe\uff1a
            \n\u901a\u8fc7\u6307\u5b9a\u5171\u4eab\u5b58\u50a8\u7684\u4e3bIP\u6765\u542f\u52a8Redis Sentinel\uff0c\u8fd9\u662f\u4e00\u4e2a\u7b80\u5355\u7684\u5165\u53e3\u70b9\u3002<\/p>\n
            #!\/bin\/bash<\/span>\r\nset<\/span> -e<\/span>\r\n\r\nif<\/span> [[<\/span> -z<\/span> ${<\/span>SHARED_MASTER_INFO_FILE<\/span>}<\/span> ]]<\/span>;<\/span> then\r\n    <\/span>export <\/span>SHARED_MASTER_INFO_FILE<\/span>=<\/span>\/redis\/share\/master\r\nfi\r\n\r\n<\/span>master_ip<\/span>=<\/span>\"\"<\/span>\r\nif<\/span> [[<\/span> !<\/span> -f<\/span> ${<\/span>SHARED_MASTER_INFO_FILE<\/span>}<\/span> ]]<\/span>;<\/span> then\r\n    <\/span>echo<\/span> \"master info file not found\"<\/span>\r\n    exit <\/span>1\r\nelse\r\n    <\/span>master_ip<\/span>=<\/span>$(<\/span>cat<\/span> ${<\/span>SHARED_MASTER_INFO_FILE<\/span>}<\/span>)<\/span>\r\n    echo<\/span> \"sentinel monitor mymaster <\/span>${<\/span>master_ip<\/span>}<\/span> 6379 2\"<\/span> >><\/span> ${<\/span>REDIS_SENTINEL_CONF<\/span>}<\/span>\r\n    redis-sentinel ${<\/span>REDIS_SENTINEL_CONF<\/span>}<\/span>\r\nfi<\/span>\r\n<\/code><\/pre>\n
            \u6545\u969c\u8f6c\u79fb\u901a\u77e5\u811a\u672c<\/h4>\n
            \u8fd9\u91cc\u5c31\u662f\u5173\u952e\u70b9\u3002<\/p>\n
            \u5f53\u5728 Sentinel \u7684\u8bbe\u7f6e\u6587\u4ef6\u4e2d\u914d\u7f6e notify-script \u53c2\u6570\u65f6\uff0c\u5f53\u53d1\u751f Sentinel \u4e8b\u4ef6\u65f6\uff0c\u7b2c\u4e00\u4e2a\u53c2\u6570\u4f1a\u4f20\u9012\u4e8b\u4ef6\u7c7b\u578b\uff0c\u7b2c\u4e8c\u4e2a\u53c2\u6570\u4f1a\u4f20\u9012\u4e8b\u4ef6\u7684\u8be6\u7ec6\u4fe1\u606f\u3002<\/p>\n
            \u5177\u4f53\u6765\u8bf4\uff0c\u6545\u969c\u8f6c\u79fb\u4e8b\u4ef6\u53d1\u751f\u65f6\uff0c\u4e3b\u8282\u70b9\u5c06\u4f1a\u5207\u6362\u3002<\/p>\n
            # \u7b2c1\u30d1\u30e9\u30e1\u30fc\u30bf<\/span>\r\n+switch-master\r\n\r\n# \u7b2c2\u30d1\u30e9\u30e1\u30fc\u30bf<\/span>\r\nmymaster 10.1.2.74 6379 10.1.2.76 6379\r\n<\/code><\/pre>\n
            \u4ece\u8fd9\u4e2a\u65e5\u5fd7\u4e2d\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u63d0\u53d6\u5207\u6362\u540e\u7684\u4e3bIP\uff0c\u5e76\u4fee\u6539\u5171\u4eab\u5b58\u50a8\u7684\u4e3b\u4fe1\u606f\uff0c\u9664\u4e3b\u8282\u70b9\u5916\u7684Pod\u5c06\u6839\u636e\u6b64\u4fe1\u606f\u4f5c\u4e3a\u4ece\u8282\u70b9\u53c2\u4e0e\u8fdb\u7a0b\u3002<\/p>\n
            #!\/bin\/bash<\/span>\r\n\r\necho<\/span> $1<\/span> >><\/span> \/redis\/event.log\r\necho<\/span> $2<\/span> >><\/span> \/redis\/event.log\r\n# +switch-master\u304c\u767a\u751f\u3057\u305f\u3089\u8a73\u7d30\u60c5\u5831\u304b\u3089\u5207\u66ff\u5148\u306e\u30de\u30b9\u30bf\u30fcIP\u3092\u62bd\u51fa\u3057\u3066\u5171\u6709\u30b9\u30c8\u30ec\u30fc\u30b8\u306e\u30d5\u30a1\u30a4\u30eb\u3092\u4e0a\u66f8\u304d\u3059\u308b<\/span>\r\nif<\/span> [[<\/span> $1<\/span> ==<\/span> \"+switch-master\"<\/span> ]]<\/span>;<\/span> then\r\n    if<\/span> [[<\/span> $2<\/span> =<\/span>~ .+[[:space:]][0-9]+\\.<\/span>[<\/span>0-9]+\\.<\/span>[<\/span>0-9]+\\.<\/span>[<\/span>0-9]+[[:space:]][0-9]+[[:space:]]([<\/span>0-9]+\\.<\/span>[<\/span>0-9]+\\.<\/span>[<\/span>0-9]+\\.<\/span>[<\/span>0-9]+)<\/span> ]]<\/span>;<\/span> then\r\n        <\/span>master_ip<\/span>=<\/span>${<\/span>BASH_REMATCH<\/span>[1]<\/span>}<\/span>\r\n        echo<\/span> \"Over write master ip on shared file: <\/span>${<\/span>master_ip<\/span>}<\/span>\"<\/span> >><\/span> \/redis\/event.log\r\n        echo<\/span>  ${<\/span>master_ip<\/span>}<\/span> ><\/span> ${<\/span>SHARED_MASTER_INFO_FILE<\/span>}<\/span>\r\n    fi\r\nfi<\/span>\r\n<\/code><\/pre>\n
            \u8bd5\u8bd5\u770b\u5b9e\u9645\u64cd\u4f5c\u4e00\u4e0b<\/h2>\n
            \u90a3\u4e48\u6211\u4eec\u6765\u8bd5\u8bd5\u52a8\u8d77\u6765\u5427\u3002<\/p>\n
            $<\/span> kubectl apply -f<\/span> .\\s<\/span>ample\\k<\/span>8s-sample.yml\r\n<\/code><\/pre>\n
            Redis\u7684Pod\u542f\u52a8\u4e863\u4e2a\uff0cSentinel\u7684Pod\u4e5f\u542f\u52a8\u4e863\u4e2a\u3002<\/p>\n
            $<\/span> kubectl get all --namespace<\/span>=<\/span>myapp\r\nNAME                                                READY   STATUS    RESTARTS   AGE\r\npod\/session-store-0                                 1\/1     Running   0          49s\r\npod\/session-store-1                                 1\/1     Running   0          47s\r\npod\/session-store-2                                 1\/1     Running   0          41s\r\npod\/session-store-redis-sentinel-66c49d5955-8pzcw   1\/1     Running   0          49s\r\npod\/session-store-redis-sentinel-66c49d5955-f77qv   1\/1     Running   0          49s\r\npod\/session-store-redis-sentinel-66c49d5955-mfx4g   1\/1     Running   0          49s\r\n\r\nNAME                        TYPE        CLUSTER-IP   EXTERNAL-IP   PORT(S)    AGE\r\n<\/span>service\/session-store-svc   ClusterIP   None         <none><\/span>        6379\/TCP   49s\r\n\r\nNAME                                           READY   UP-TO-DATE   AVAILABLE   AGE\r\ndeployment.apps\/session-store-redis-sentinel   3\/3     3            3           49s\r\n\r\nNAME                                                      DESIRED   CURRENT   READY   AGE\r\nreplicaset.apps\/session-store-redis-sentinel-66c49d5955   3         3         3       49s\r\n\r\nNAME                             READY   AGE\r\nstatefulset.apps\/session-store   3\/3     49s\r\n<\/span><\/code><\/pre>\n
            \u7531\u4e8e\u521d\u6b21\u542f\u52a8\uff0c\u7b2c\u4e00\u4e2aStatefulSet\uff08\u7d22\u5f15\u4e3a0\uff09\u6309\u8ba1\u5212\u6210\u4e3a\u4e86\u4e3b\u8282\u70b9\u3002<\/p>\n
            root@session-store-0:\/redis# redis-cli\r\n127.0.0.1:6379> info replication\r\n# Replication<\/span>\r\nrole:master\r\nconnected_slaves:2\r\nslave0:ip=<\/span>10.1.2.150,port=<\/span>6379,state=<\/span>online,offset=<\/span>17182,lag=<\/span>1\r\nslave1:ip=<\/span>10.1.2.151,port=<\/span>6379,state=<\/span>online,offset=<\/span>16912,lag=<\/span>1\r\nmaster_failover_state:no-failover\r\nmaster_replid:ebf677a9f4611c50ac75aee1dd1b9380491980cc\r\nmaster_replid2:0000000000000000000000000000000000000000\r\nmaster_repl_offset:17317\r\nsecond_repl_offset:-1\r\nrepl_backlog_active:1\r\nrepl_backlog_size:1048576\r\nrepl_backlog_first_byte_offset:1\r\nrepl_backlog_histlen:17317\r\n<\/code><\/pre>\n
            \u6211\u4f1a\u5728\u8fd9\u91cc\u5c1d\u8bd5\u5220\u9664\u4e3b\u4eba\u3002<\/p>\n
            $<\/span> kubectl delete pod session-store-0 --namespace<\/span>=<\/span>myapp\r\n<\/code><\/pre>\n
            \u7531\u4e8eStatefulSet\u7684\u5b58\u5728\uff0c\u88ab\u5220\u9664\u7684\u7d22\u5f15\u4e3a0\u7684pod\u5df2\u7ecf\u6062\u590d\u3002<\/p>\n
            $<\/span> kubectl get all --namespace<\/span>=<\/span>myapp\r\nNAME                                                READY   STATUS    RESTARTS   AGE\r\npod\/session-store-0                                 1\/1     Running   0          26s\r\npod\/session-store-1                                 1\/1     Running   0          4m27s\r\npod\/session-store-2                                 1\/1     Running   0          4m21s\r\npod\/session-store-redis-sentinel-66c49d5955-8pzcw   1\/1     Running   0          4m29s\r\npod\/session-store-redis-sentinel-66c49d5955-f77qv   1\/1     Running   0          4m29s\r\npod\/session-store-redis-sentinel-66c49d5955-mfx4g   1\/1     Running   0          4m29s\r\n<\/span><\/code><\/pre>\n
            \u5f53\u6211\u4eec\u67e5\u770bSentinel\u4e8b\u4ef6\u65e5\u5fd7\u7684\u65f6\u5019\uff0c\u6211\u4eec\u53ef\u4ee5\u770b\u5230”Redis\u7684\u4e3b\u8282\u70b9\u5df2\u4ece10.1.2.146\u5207\u6362\u523010.1.2.150″\u3002<\/p>\n
            $<\/span> root@session-store-redis-sentinel-66c49d5955-8pzcw:\/redis# cat<\/span> \/redis\/sentinel.log\r\n...\r\n<\/span>9:X 14 Nov 2021 15:15:53.290 #<\/span> +sdown master mymaster 10.1.2.146 6379\r\n9:X 14 Nov 2021 15:15:53.400 #<\/span> +new-epoch 1\r\n9:X 14 Nov 2021 15:15:53.414 #<\/span> +vote-for-leader 70918ed35e8a13c470ac2eb16067d893750691fd 1\r\n9:X 14 Nov 2021 15:15:53.852 #<\/span> +config-update-from sentinel 70918ed35e8a13c470ac2eb16067d893750691fd 10.1.2.147 26379 @ mymaster 10.1.2.146 6379\r\n9:X 14 Nov 2021 15:15:53.852 #<\/span> +switch-master mymaster 10.1.2.146 6379 10.1.2.150 6379\r\n9:X 14 Nov 2021 15:15:53.852 * +slave slave 10.1.2.151:6379 10.1.2.151 6379 @ mymaster 10.1.2.150 6379\r\n9:X 14 Nov 2021 15:15:53.852 * +slave slave 10.1.2.146:6379 10.1.2.146 6379 @ mymaster 10.1.2.150 6379\r\n9:X 14 Nov 2021 15:16:03.965 * +slave slave 10.1.2.152:6379 10.1.2.152 6379 @ mymaster 10.1.2.150 6379\r\n<\/span>9:X 14 Nov 2021 15:16:23.891 #<\/span> +sdown slave 10.1.2.146:6379 10.1.2.146 6379 @ mymaster 10.1.2.150 6379\r\n<\/code><\/pre>\n
            \u5f53\u67e5\u770b\u5df2\u7ecf\u6062\u590d\u7684\u7d22\u5f150\u7684pod\u7684\u590d\u5236\u4fe1\u606f\u65f6\uff0c\u53ef\u4ee5\u770b\u5230\u5b83\u4ee510.1.2.150\u4f5c\u4e3a\u4ece\u8282\u70b9\u53c2\u4e0e\u590d\u5236\u3002<\/p>\n
            root@session-store-0:\/redis#<\/span> redis-cli\r\n127.0.0.1:6379><\/span> info replication\r\n#<\/span> Replication\r\nrole:slave\r\nmaster_host:10.1.2.150\r\nmaster_port:6379\r\nmaster_link_status:up\r\nmaster_last_io_seconds_ago:1\r\nmaster_sync_in_progress:0\r\nslave_read_repl_offset:112386\r\nslave_repl_offset:112386\r\nslave_priority:100\r\nslave_read_only:1\r\nreplica_announced:1\r\nconnected_slaves:0\r\nmaster_failover_state:no-failover\r\nmaster_replid:905df3a7cd6654a6cd525593e7d4a0920b789e2a\r\nmaster_replid2:0000000000000000000000000000000000000000\r\nmaster_repl_offset:112386\r\nsecond_repl_offset:-1\r\nrepl_backlog_active:1\r\nrepl_backlog_size:1048576\r\nrepl_backlog_first_byte_offset:41809\r\nrepl_backlog_histlen:70578\r\n<\/span><\/code><\/pre>\n
            \u786e\u8ba4\u52a8\u4f5c<\/h2>\n
            \u53ea\u8981\u8bbf\u95eeKubernetes\u670d\u52a1\uff0c\u5373\u4f7f\u8fdb\u884c\u6545\u969c\u8f6c\u79fb\u540e\uff0c\u4e5f\u53ef\u4ee5\u65e0\u9700\u5173\u6ce8\u540e\u65b9\u76f4\u63a5\u8fdb\u884c\u8bfb\u5199\u64cd\u4f5c\uff01\u7136\u800c\uff0c\u6b63\u5982\u5f00\u5934\u6240\u8ff0\uff0cRedis\u590d\u5236\u5374\u65e0\u6cd5\u5728\u4ece\u7ad9\u5199\u5165\u540e\u8fdb\u884c\u540c\u6b65\uff0c\u6240\u4ee5\u884c\u4e0d\u901a\u3002<\/p>\n
            \u867d\u7136\u6211\u53ea\u5b8c\u6210\u4e86\u4e00\u534a\uff0c\u4f46\u5982\u679cSentinel\u7684\u4f7f\u7528\u65b9\u6cd5\u80fd\u5bf9\u4f60\u6709\u6240\u5e2e\u52a9\uff0c\u90a3\u5c31\u592a\u597d\u4e86\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
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