{"id":43725,"date":"2023-08-18T13:07:09","date_gmt":"2022-12-12T07:54:49","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/cockroachdb%e7%9a%84%e9%83%a8%e7%bd%b2\/"},"modified":"2024-01-15T11:46:30","modified_gmt":"2024-01-15T03:46:30","slug":"cockroachdb%e7%9a%84%e9%83%a8%e7%bd%b2","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/cockroachdb%e7%9a%84%e9%83%a8%e7%bd%b2\/","title":{"rendered":"CockroachDB\u7684\u90e8\u7f72"},"content":{"rendered":"

\u73b0\u5728\u4e3a\u4e86\u5b9e\u73b0POST\u65b9\u6cd5\uff0c\u6211\u4eec\u9700\u8981\u90e8\u7f72\u5b58\u50a8\u3002\u6839\u636e\u5de5\u4f5c\u8d1f\u8f7d\u7684\u7279\u6027\u548c\u56e2\u961f\u7684\u6280\u672f\u5806\u6808\uff0c\u53ef\u4ee5\u9009\u62e9\u9002\u5408\u7684\u6570\u636e\u5b58\u50a8\u65b9\u5f0f\uff0c\u6ca1\u6709\u56fa\u5b9a\u7684\u89c4\u5b9a\u3002\u6709\u4e9b\u56e2\u961f\u4f7f\u7528Mongo\uff0c\u6709\u4e9b\u56e2\u961f\u6839\u636e\u8bbf\u95ee\u65b9\u5f0f\u9009\u62e9\u4f7f\u7528etcd\u7b49\uff0c\u9009\u62e9\u7684\u7406\u7531\u5404\u79cd\u5404\u6837\u3002\u6211\u6240\u5728\u7684\u56e2\u961f\u4e5f\u5728\u4f7f\u7528\u51e0\u79cd\u4e0d\u540c\u7684\u5b58\u50a8\u65b9\u5f0f\uff0c\u4f46\u5bf9\u4e8e\u7b80\u5355\u7684Web\u5e94\u7528\uff0c\u901a\u5e38\u9009\u62e9CockroachDB\u3002<\/p>\n

\u8fd9\u4e2a\u5206\u6563\u5f0f\u7684SQL\u6570\u636e\u5e93\u4e0ePostgres\u517c\u5bb9\uff0c\u5e76\u4e14\u6ca1\u6709\u7279\u6b8a\u7684\u4f7f\u7528\u65b9\u5f0f\uff0c\u975e\u5e38\u6613\u4e8e\u64cd\u4f5c\u3002<\/p>\n

\u6211\u5e0c\u671b\u5c06\u6570\u636e\u518d\u6b21\u4fdd\u5b58\u5728\u8fd9\u4e2aCockroachDB\u4e2d\u3002<\/p>\n

\u90e8\u7f72CockroachDB<\/h2>\n

\u6211\u4eec\u6765\u770b\u4e00\u4e0b\u90e8\u7f72CockroachDB\u6240\u9700\u7684Kubernetes\u6e05\u5355\u6587\u4ef6\u3002
\n\u5927\u81f4\u4e0a\u548c\u8fd9\u91cc\u5217\u51fa\u7684\u6b65\u9aa4\u76f8\u540c\u3002<\/p>\n

apiVersion<\/span>:<\/span> policy\/v1beta1<\/span>\r\nkind<\/span>:<\/span> PodDisruptionBudget<\/span>\r\nmetadata<\/span>:<\/span>\r\n  name<\/span>:<\/span> cockroachdb-budget<\/span>\r\n  namespace<\/span>:<\/span> qiita<\/span>\r\n  labels<\/span>:<\/span>\r\n    app<\/span>:<\/span> cockroachdb<\/span>\r\nspec<\/span>:<\/span>\r\n  selector<\/span>:<\/span>\r\n    matchLabels<\/span>:<\/span>\r\n      app<\/span>:<\/span> cockroachdb<\/span>\r\n  maxUnavailable<\/span>:<\/span> 1<\/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> cockroachdb<\/span>\r\n  namespace<\/span>:<\/span> qiita<\/span>\r\n  labels<\/span>:<\/span>\r\n    app<\/span>:<\/span> cockroachdb<\/span>\r\nspec<\/span>:<\/span>\r\n  serviceName<\/span>:<\/span> \"<\/span>cockroachdb\"<\/span>\r\n  replicas<\/span>:<\/span> 3<\/span>\r\n  selector<\/span>:<\/span>\r\n    matchLabels<\/span>:<\/span>\r\n      app<\/span>:<\/span> cockroachdb<\/span>\r\n  template<\/span>:<\/span>\r\n    metadata<\/span>:<\/span>\r\n      labels<\/span>:<\/span>\r\n        app<\/span>:<\/span> cockroachdb<\/span>\r\n    spec<\/span>:<\/span>\r\n      affinity<\/span>:<\/span>\r\n        podAntiAffinity<\/span>:<\/span>\r\n          preferredDuringSchedulingIgnoredDuringExecution<\/span>:<\/span>\r\n          -<\/span> weight<\/span>:<\/span> 100<\/span>\r\n            podAffinityTerm<\/span>:<\/span>\r\n              labelSelector<\/span>:<\/span>\r\n                matchExpressions<\/span>:<\/span>\r\n                -<\/span> key<\/span>:<\/span> app<\/span>\r\n                  operator<\/span>:<\/span> In<\/span>\r\n                  values<\/span>:<\/span>\r\n                  -<\/span> cockroachdb<\/span>\r\n              topologyKey<\/span>:<\/span> kubernetes.io\/hostname<\/span>\r\n      containers<\/span>:<\/span>\r\n      -<\/span> name<\/span>:<\/span> cockroachdb<\/span>\r\n        image<\/span>:<\/span> cockroachdb\/cockroach:v2.1.4<\/span>\r\n        imagePullPolicy<\/span>:<\/span> IfNotPresent<\/span>\r\n        ports<\/span>:<\/span>\r\n        -<\/span> containerPort<\/span>:<\/span> 26257<\/span>\r\n          name<\/span>:<\/span> grpc<\/span>\r\n        -<\/span> containerPort<\/span>:<\/span> 8080<\/span>\r\n          name<\/span>:<\/span> http<\/span>\r\n        livenessProbe<\/span>:<\/span>\r\n          httpGet<\/span>:<\/span>\r\n            path<\/span>:<\/span> \"<\/span>\/health\"<\/span>\r\n            port<\/span>:<\/span> http<\/span>\r\n            scheme<\/span>:<\/span> HTTP<\/span>\r\n          initialDelaySeconds<\/span>:<\/span> 30<\/span>\r\n          periodSeconds<\/span>:<\/span> 5<\/span>\r\n        readinessProbe<\/span>:<\/span>\r\n          httpGet<\/span>:<\/span>\r\n            path<\/span>:<\/span> \"<\/span>\/health?ready=1\"<\/span>\r\n            port<\/span>:<\/span> http<\/span>\r\n            scheme<\/span>:<\/span> HTTP<\/span>\r\n          initialDelaySeconds<\/span>:<\/span> 60<\/span>\r\n          failureThreshold<\/span>:<\/span> 2<\/span>\r\n        volumeMounts<\/span>:<\/span>\r\n        -<\/span> name<\/span>:<\/span> datadir<\/span>\r\n          mountPath<\/span>:<\/span> \/cockroach\/cockroach-data<\/span>\r\n        env<\/span>:<\/span>\r\n        -<\/span> name<\/span>:<\/span> COCKROACH_CHANNEL<\/span>\r\n          value<\/span>:<\/span> kubernetes-insecure<\/span>\r\n        command<\/span>:<\/span>\r\n        -<\/span> \"<\/span>\/bin\/bash\"<\/span>\r\n        -<\/span> \"<\/span>-ecx\"<\/span>\r\n        # The use of qualified `hostname -f` is crucial:<\/span>\r\n        # Other nodes aren't able to look up the unqualified hostname.<\/span>\r\n        -<\/span> \"<\/span>exec<\/span> \/cockroach\/cockroach<\/span> start<\/span> --logtostderr<\/span> --insecure<\/span> --advertise-host<\/span> $(hostname<\/span> -f)<\/span> --http-addr<\/span> 0.0.0.0<\/span> --join<\/span> cockroachdb-0.cockroachdb,cockroachdb-1.cockroachdb,cockroachdb-2.cockroachdb<\/span> --cache<\/span> 25%<\/span> --max-sql-memory<\/span> 25%\"<\/span>\r\n      # No pre-stop hook is required, a SIGTERM plus some time is all that's<\/span>\r\n      # needed for graceful shutdown of a node.<\/span>\r\n      terminationGracePeriodSeconds<\/span>:<\/span> 60<\/span>\r\n      volumes<\/span>:<\/span>\r\n      -<\/span> name<\/span>:<\/span> datadir<\/span>\r\n        persistentVolumeClaim<\/span>:<\/span>\r\n          claimName<\/span>:<\/span> datadir<\/span>\r\n  podManagementPolicy<\/span>:<\/span> Parallel<\/span>\r\n  updateStrategy<\/span>:<\/span>\r\n    type<\/span>:<\/span> RollingUpdate<\/span>\r\n  volumeClaimTemplates<\/span>:<\/span>\r\n  -<\/span> metadata<\/span>:<\/span>\r\n      name<\/span>:<\/span> datadir<\/span>\r\n    spec<\/span>:<\/span>\r\n      accessModes<\/span>:<\/span>\r\n      -<\/span> \"<\/span>ReadWriteOnce\"<\/span>\r\n      resources<\/span>:<\/span>\r\n        requests<\/span>:<\/span>\r\n          storage<\/span>:<\/span> 100Gi<\/span>\r\n<\/code><\/pre>\n
apiVersion<\/span>:<\/span> v1<\/span>\r\nkind<\/span>:<\/span> Service<\/span>\r\nmetadata<\/span>:<\/span>\r\n  # This service is meant to be used by clients of the database. It exposes a ClusterIP that will<\/span>\r\n  # automatically load balance connections to the different database pods.<\/span>\r\n  name<\/span>:<\/span> cockroachdb-proxy<\/span>\r\n  namespace<\/span>:<\/span> qiita<\/span>\r\n  labels<\/span>:<\/span>\r\n    app<\/span>:<\/span> cockroachdb<\/span>\r\nspec<\/span>:<\/span>\r\n  ports<\/span>:<\/span>\r\n  # The main port, served by gRPC, serves Postgres-flavor SQL, internode<\/span>\r\n  # traffic and the cli.<\/span>\r\n  -<\/span> port<\/span>:<\/span> 26257<\/span>\r\n    targetPort<\/span>:<\/span> 26257<\/span>\r\n    name<\/span>:<\/span> grpc<\/span>\r\n  # The secondary port serves the UI as well as health and debug endpoints.<\/span>\r\n  -<\/span> port<\/span>:<\/span> 8000<\/span>\r\n    targetPort<\/span>:<\/span> 8000<\/span>\r\n    name<\/span>:<\/span> http<\/span>\r\n  selector<\/span>:<\/span>\r\n    app<\/span>:<\/span> cockroachdb<\/span>\r\n---<\/span>\r\napiVersion<\/span>:<\/span> v1<\/span>\r\nkind<\/span>:<\/span> Service<\/span>\r\nmetadata<\/span>:<\/span>\r\n  # This service only exists to create DNS entries for each pod in the stateful<\/span>\r\n  # set such that they can resolve each other's IP addresses. It does not<\/span>\r\n  # create a load-balanced ClusterIP and should not be used directly by clients<\/span>\r\n  # in most circumstances.<\/span>\r\n  name<\/span>:<\/span> cockroachdb<\/span>\r\n  namespace<\/span>:<\/span> qiita<\/span>\r\n  labels<\/span>:<\/span>\r\n    app<\/span>:<\/span> cockroachdb<\/span>\r\n  annotations<\/span>:<\/span>\r\n    # Enable automatic monitoring of all instances when Prometheus is running in the cluster.<\/span>\r\n    prometheus.io\/scrape<\/span>:<\/span> \"<\/span>true\"<\/span>\r\n    prometheus.io\/path<\/span>:<\/span> \"<\/span>_status\/vars\"<\/span>\r\n    prometheus.io\/port<\/span>:<\/span> \"<\/span>8000\"<\/span>\r\nspec<\/span>:<\/span>\r\n  ports<\/span>:<\/span>\r\n  -<\/span> port<\/span>:<\/span> 26257<\/span>\r\n    targetPort<\/span>:<\/span> 26257<\/span>\r\n    name<\/span>:<\/span> grpc<\/span>\r\n  -<\/span> port<\/span>:<\/span> 8000<\/span>\r\n    targetPort<\/span>:<\/span> 8000<\/span>\r\n    name<\/span>:<\/span> http<\/span>\r\n  # We want all pods in the StatefulSet to have their addresses published for<\/span>\r\n  # the sake of the other CockroachDB pods even before they're ready, since they<\/span>\r\n  # have to be able to talk to each other in order to become ready.<\/span>\r\n  publishNotReadyAddresses<\/span>:<\/span> true<\/span>\r\n  clusterIP<\/span>:<\/span> None<\/span>\r\n  selector<\/span>:<\/span>\r\n    app<\/span>:<\/span> cockroachdb<\/span>\r\n<\/code><\/pre>\n
\u5b9e\u9645\u4e0a\uff0c\u4e3a\u4e86\u5728\u5b89\u5168\u6a21\u5f0f\u4e0b\u542f\u52a8\uff0c\u6709\u4e00\u4e9b\u65b9\u6cd5\uff0c\u5982\u90e8\u7f72\u8ba4\u8bc1\u673a\u6784\u6216\u8bc1\u4e66\u66f4\u65b0\u7684\u526f\u8f66\u7b49\uff0c\u4f46\u5728\u8fd9\u91cc\u4e0d\u8be6\u7ec6\u5c55\u793a\u3002<\/p>\n
\u90a3\u4e48\u8ba9\u6211\u4eec\u90e8\u7f72\u4e00\u4e0b\u5427\u3002<\/p>\n
$ <\/span>kubectl apply -f<\/span> kubernetes\/cockroach-statefulset.yaml\r\npoddisruptionbudget.policy\/cockroachdb-budget created\r\nstatefulset.apps\/cockroachdb created\r\n$ <\/span>kubectl apply -f<\/span> kubernetes\/cockroach-service.yaml\r\nservice\/cockroachdb-proxy created\r\nservice\/cockroachdb created\r\n<\/code><\/pre>\n
$ <\/span>kubectl -n<\/span> qiita get pods\r\nNAME                                          READY   STATUS    RESTARTS   AGE\r\ncockroachdb-0                                 0\/1     Running   0          87s\r\ncockroachdb-1                                 0\/1     Running   0          87s\r\ncockroachdb-2                                 0\/1     Running   0          86s\r\nqiita-advent-calendar-2019-7c885c5698-hwkts   1\/1     Running   1          5d21h\r\n\r\n$ <\/span>kubectl -n<\/span> qiita get statefulsets.apps\r\nNAME          READY   AGE\r\ncockroachdb   0\/3     2m52s\r\n\r\n$ <\/span>kubectl -n<\/span> qiita get service\r\nNAME                         TYPE        CLUSTER-IP      EXTERNAL-IP   PORT(<\/span>S)<\/span>              AGE\r\ncockroachdb                  ClusterIP   None            <none>        26257\/TCP,8000\/TCP   15m\r\ncockroachdb-proxy            ClusterIP   10.111.34.61    <none>        26257\/TCP,8000\/TCP   15m\r\nqiita-advent-calendar-2019   ClusterIP   10.108.124.86   <none>        8080\/TCP             5d21h\r\n\r\n$ <\/span>kubectl -n<\/span> qiita get poddisruptionbudgets.policy\r\nNAME                 MIN AVAILABLE   MAX UNAVAILABLE   ALLOWED DISRUPTIONS   AGE\r\ncockroachdb-budget   N\/A             1                 0                     3m17s\r\n<\/code><\/pre>\n
\u8d44\u6e90\u7684\u521b\u5efa\u6682\u65f6\u5b8c\u6210\u4e86\u3002<\/p>\n
Job\u7684\u6267\u884c<\/h2>\n
\u4e0b\u4e00\u6b65\uff0c\u6211\u4eec\u5c06\u6267\u884c\u7528\u4e8e\u8bbe\u7f6eCockroach\u7fa4\u96c6\u7684\u521d\u59cb\u4f5c\u4e1a\u3002<\/p>\n
apiVersion<\/span>:<\/span> batch\/v1<\/span>\r\nkind<\/span>:<\/span> Job<\/span>\r\nmetadata<\/span>:<\/span>\r\n  name<\/span>:<\/span> cockroach-init<\/span>\r\n  namespace<\/span>:<\/span> qiita<\/span>\r\n  labels<\/span>:<\/span>\r\n    app<\/span>:<\/span> cockroachdb<\/span>\r\nspec<\/span>:<\/span>\r\n  template<\/span>:<\/span>\r\n    spec<\/span>:<\/span>\r\n      containers<\/span>:<\/span>\r\n      -<\/span> name<\/span>:<\/span> cluster-init<\/span>\r\n        image<\/span>:<\/span> cockroachdb\/cockroach:v2.1.4<\/span>\r\n        imagePullPolicy<\/span>:<\/span> IfNotPresent<\/span>\r\n        command<\/span>:<\/span>\r\n        -<\/span> \"<\/span>\/cockroach\/cockroach\"<\/span>\r\n        -<\/span> \"<\/span>init\"<\/span>\r\n        -<\/span> \"<\/span>--insecure\"<\/span>\r\n        -<\/span> \"<\/span>--host=cockroachdb-0.cockroachdb\"<\/span>\r\n      restartPolicy<\/span>:<\/span> OnFailure<\/span>\r\n<\/code><\/pre>\n
\u6267\u884c\u3002<\/p>\n
$ <\/span>kubectl apply -f<\/span> kubernetes\/cockroach-init-job.yaml\r\njob.batch\/cockroach-init created\r\n<\/code><\/pre>\n
$ <\/span>kubectl -n<\/span> qiita get jobs.batch\r\nNAME             COMPLETIONS   DURATION   AGE\r\ncockroach-init   1\/1           3s         8s\r\n\r\n$ <\/span>kubectl -n<\/span> qiita get pod\r\nNAME                                          READY   STATUS      RESTARTS   AGE\r\ncockroach-init-5zmpg                          0\/1     Completed   0          15s\r\ncockroachdb-0                                 1\/1     Running     0          8m26s\r\ncockroachdb-1                                 1\/1     Running     0          8m26s\r\ncockroachdb-2                                 1\/1     Running     0          8m25s\r\nqiita-advent-calendar-2019-7c885c5698-hwkts   1\/1     Running     1          5d21h\r\n<\/code><\/pre>\n
\u53ef\u4ee5\u786e\u8ba4Pod\u5df2\u7ecf\u51c6\u5907\u5c31\u7eea\u3002<\/p>\n
\u521b\u5efa\u6570\u636e\u5e93\u548c\u7528\u6237<\/h2>\n
\u6211\u89c9\u5f97……\uff0c\u4f46\u662f\u7531\u4e8e\u6bdb\u7b14\u7684\u8fd0\u7b14\u4e0d\u592a\u7406\u60f3\uff0c\u6211\u6682\u65f6\u60f3\u628a\u5b83\u653e\u5728\u4e00\u8fb9\uff0c\u660e\u5929\u518d\u770b\u4e00\u4e0b\u3002\u7b11<\/p>\n","protected":false},"excerpt":{"rendered":"
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