{"id":50098,"date":"2023-04-24T21:54:34","date_gmt":"2023-06-26T20:36:29","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8kubernetes%e6%9e%84%e5%bb%bacassandra%e7%8e%af%e5%a2%83%e3%80%82\/"},"modified":"2024-04-30T01:09:09","modified_gmt":"2024-04-29T17:09:09","slug":"%e4%bd%bf%e7%94%a8kubernetes%e6%9e%84%e5%bb%bacassandra%e7%8e%af%e5%a2%83%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/%e4%bd%bf%e7%94%a8kubernetes%e6%9e%84%e5%bb%bacassandra%e7%8e%af%e5%a2%83%e3%80%82\/","title":{"rendered":"\u4f7f\u7528Kubernetes\u6784\u5efaCassandra\u73af\u5883"},"content":{"rendered":"

\u4e3a\u4e86\u7406\u89e3Kubernetes\uff0c\u9996\u5148\u8981\u62e5\u6709\u8fd0\u884c\u548c\u64cd\u4f5c\u7684\u5b9e\u9645\u611f\u3002\u5173\u4e8e\u5176\u8fd0\u4f5c\u673a\u5236\uff0c\u7a0d\u540e\u53ef\u4ee5\u901a\u8fc7\u9605\u8bfb\u6587\u6863\u8fdb\u884c\u603b\u7ed3\u3002<\/p>\n

\u73af\u5883\uff1aVirtualBox
\nCoreOS Alpha 845.0.0
\nKernel\u7248\u672c\uff1a4.2.2
\ndocker\u7248\u672c\uff1a1.8.3<\/p>\n

\u5173\u4e8eCoreOS\uff0c\u6211\u4f1a\u5728\u4ee5\u540e\u5b66\u4e60\u3002\u76ee\u524d\u5bf9\u4e8e\u5b83\u6211\u8fd8\u4e0d\u592a\u4e86\u89e3\uff0c\u6240\u4ee5\u6709\u5f88\u591a\u4e0d\u77e5\u9053\u7684\u4e1c\u897f\u3002<\/p>\n

\u786e\u8ba4 Kubernetes \u73af\u5883<\/h1>\n

1.1. \u68c0\u67e5etcd\u662f\u5426\u6b63\u5e38\u8fd0\u884c\u3002<\/h4>\n

\u4f7f\u7528etcdctl\u547d\u4ee4\u6765\u68c0\u67e5\u96c6\u7fa4\u72b6\u6001\u3002<\/p>\n

$ etcdctl cluster-health\r\nmember ce2a822cea30bfca is healthy: got healthy result from http:\/\/localhost:2379\r\ncluster is healthy\r\n<\/code><\/pre>\n
etcd\u662f\u4e00\u4e2a\u952e\u503c\u5b58\u50a8\u7cfb\u7edf\uff0c\u7528\u4e8e\u5b58\u50a8\u53ef\u7531CoreOS\u6784\u6210\u7684\u96c6\u7fa4\u4e2d\u7684\u6240\u6709\u8282\u70b9\u8bbf\u95ee\u7684\u6570\u636e\u3002<\/p>\n
\u786e\u8ba4\u9876\u7ea7\u952e<\/p>\n
$ etcdctl ls\r\n\/registry\r\n\/coreos.com\r\n<\/code><\/pre>\n
\u8981\u83b7\u53d6value\uff0c\u9700\u8981\u4f7f\u7528get\u65b9\u6cd5\u6307\u5b9a\u7aef\u70b9\u3002\u5bf9\u4e8e\u76ee\u5f55\uff0c\u8fd4\u56de\u7684\u7ed3\u679c\u4f1a\u662f\u4e00\u4e2a\u7c7b\u4f3c\u4ee5\u4e0b\u7684\u76ee\u5f55\u3002<\/p>\n
$ etcdctl get \/coreos.com\/              \r\n\/coreos.com: is a directory\r\n<\/code><\/pre>\n
\u6309\u7167\u4ee5\u4e0b\u65b9\u5f0f\uff0c\u53ef\u4ee5\u8f93\u51fa\u6240\u6709\u7684\u5c42\u6b21\u7ed3\u6784\u4fe1\u606f\u3002<\/p>\n
etcdctl ls \/ --recursive\r\n<\/code><\/pre>\n
\u203b\u548c\u517b\u52a8\u7269\u5458\u76f8\u4f3c\u3002<\/p>\n
\u53ef\u4ee5\u6307\u5b9a endpoint\uff0c\u5e76\u901a\u8fc7 GET \u65b9\u5f0f\u83b7\u53d6\u5b9e\u9645\u6570\u636e\u7684\u6837\u5b50\u3002<\/p>\n
$ etcdctl get \/coreos.com\/network\/config\r\n{\"Network\":\"10.2.0.0\/16\",\"Backend\":{\"Type\":\"vxlan\"}}\r\n<\/code><\/pre>\n
1.2. \u9a8c\u8bc1 Kubernetes \u7684\u670d\u52a1\u662f\u5426\u6b63\u5e38\u8fd0\u884c\u3002<\/h4>\n
$ systemctl status kubelet.service\r\n\u25cf kubelet.service\r\n   Loaded: loaded (\/etc\/systemd\/system\/kubelet.service; enabled; vendor preset: disabled)\r\n   Active: active (running) since Thu 2015-10-29 05:52:17 UTC; 5h 21min ago\r\n Main PID: 601 (kubelet)\r\n   Memory: 4.8M\r\n      CPU: 592ms\r\n   CGroup: \/system.slice\/kubelet.service\r\n           \u251c\u2500601 \/usr\/bin\/kubelet --api_servers=http:\/\/127.0.0.1:8080 --register-node=true -...\r\n           \u2514\u2500966 journalctl -f\r\n\u30fb\u30fb\u30fb\r\n<\/code><\/pre>\n
$ docker ps |grep kube-api\r\nc5a23f6f1e0b        gcr.io\/google_containers\/hyperkube:v1.0.6        \"\/hyperkube apiserver\"   5 hours ago         Up 5 hours                              k8s_kube-apiserver.ae2b1f58_kube-apserver-172.17.4.99_kube-system_b5fd6f0b2e57f08b39d588afd25c9206_c57e302b\r\n864e167abf14        gcr.io\/google_containers\/pause:0.8.0             \"\/pause\"                 5 hours ago         Up 5 hours                              k8s_POD.e4cc795_kube-apiserver-172.17.4.99_kube-system_b5fd6f0b2e57f08b39d588afd25c9206_c1bedd4a\r\n<\/code><\/pre>\n
1.3. \u67e5\u770bKubernetes\u7684\u72b6\u6001\u3002<\/h4>\n
\u5c55\u793a\u5e26\u6709master\u5730\u5740\u6216\u5e26\u6709kubernetes.io\/cluster-service=true\u6807\u7b7e\u7684\u670d\u52a1\u7684\u4fe1\u606f\u3002<\/p>\n
$ kubectl cluster-info\r\nKubernetes master is running at https:\/\/172.17.4.99:443\r\nKubeDNS is running at https:\/\/172.17.4.99:443\/api\/v1\/proxy\/namespaces\/kube-system\/services\/kube-dns\r\n<\/code><\/pre>\n
\u663e\u793a\u8d44\u6e90\u4fe1\u606f\uff08pods\uff08po\uff09\u3001\u590d\u5236\u63a7\u5236\u5668\uff08rc\uff09\u3001\u670d\u52a1\uff08svc\uff09\u3001\u8282\u70b9\u3001\u4e8b\u4ef6\uff08ev\uff09\u3001\u7ec4\u4ef6\u72b6\u6001\uff08cs\uff09\u3001\u9650\u5236\u8303\u56f4\uff08limits\uff09\u3001\u8282\u70b9\uff08no\uff09\u3001\u6301\u4e45\u5377\uff08pv\uff09\u3001\u6301\u4e45\u5377\u58f0\u660e\uff08pvc\uff09\u6216\u8d44\u6e90\u914d\u989d\uff09\u3002<\/p>\n
$ kubectl get nodes\r\nNAME          LABELS                               STATUS\r\n172.17.4.99   kubernetes.io\/hostname=172.17.4.99   Ready\r\n\r\n$ kubectl get pods        \r\nNAME      READY     STATUS    RESTARTS   AGE\r\n<\/code><\/pre>\n
\u663e\u793akubeconfig\u914d\u7f6e\u7684\u8bbe\u7f6e<\/p>\n
$ kubectl config view
\napiVersion: v1
\nclusters:
\n– cluster:
\ncertificate-authority: \/home\/core\/ssl\/ca.pem
\nserver: https:\/\/172.17.4.99:443
\nname: vagrant
\ncontexts:
\n– context:
\ncluster: vagrant
\nuser: vagrant-admin
\nname: vagrant
\ncurrent-context: vagrant
\nkind: Config
\npreferences: {}
\nusers:
\n– name: vagrant-admin
\nuser:
\nclient-certificate: \/home\/core\/ssl\/admin.pem
\nclient-key: \/home\/core\/ssl\/admin-key.pem<\/p>\n
\u5c06kubeconfig\u7684\u8bbe\u7f6e\u663e\u793a\u51fa\u6765<\/p>\n
$ kubectl config view
\napiVersion: v1
\nclusters:
\n– cluster:
\ncertificate-authority: \/home\/core\/ssl\/ca.pem
\nserver: https:\/\/172.17.4.99:443
\nname: vagrant
\ncontexts:
\n– context:
\ncluster: vagrant
\nuser: vagrant-admin
\nname: vagrant
\ncurrent-context: vagrant
\nkind: Config
\npreferences: {}
\nusers:
\n– name: vagrant-admin
\nuser:
\nclient-certificate: \/home\/core\/ssl\/admin.pem
\nclient-key: \/home\/core\/ssl\/admin-key.pem<\/p>\n
\u4f7f\u7528Kubernetes\u6765\u6784\u5efaCassandra\u73af\u5883\u3002<\/h1>\n
http:\/\/kubernetes.io\/v1.0\/docs\/user-guide\/configuring-containers.html
\nhttp:\/\/kubernetes.io\/v1.0\/examples\/cassandra\/README.html<\/p>\n
\u4ee5\u4e0b\u662f\u4e24\u4e2a\u94fe\u63a5\uff0c\u7b2c\u4e00\u4e2a\u94fe\u63a5\u662f\u5173\u4e8e\u914d\u7f6e\u5bb9\u5668\u7684\u7528\u6237\u6307\u5357\uff0c\u7b2c\u4e8c\u4e2a\u94fe\u63a5\u662f\u5173\u4e8eCassandra\u7684\u793a\u4f8b\u8bf4\u660e\u3002<\/p>\n
2.1. \u521b\u5efaPod<\/h4>\n
\u4f7f\u7528 Kubernetes \u7684 API \u8d44\u6e90\u67b6\u6784\u6765\u521b\u5efa\u914d\u7f6e\u6587\u4ef6\u3002
\n\u5728 Kubernetes \u4e2d\uff0c\u5e94\u7528\u7a0b\u5e8f\u7684\u6700\u5c0f\u5355\u5143\u662f Pod\uff0c\u6240\u4ee5\u9996\u5148\u8981\u5b9a\u4e49 Pod\u3002Pod \u4f1a\u88ab\u8c03\u5ea6\u5230\u76f8\u540c\u7684\u4e3b\u673a\u4e0a\u3002Pod \u5185\u7684\u6240\u6709\u5bb9\u5668\u5171\u4eab\u7f51\u7edc\u547d\u540d\u7a7a\u95f4\uff0c\u5e76\u4e14\u5377\u4e5f\u53ef\u4ee5\u5171\u4eab\uff08\u53ef\u9009\uff09\u3002Kubernetes \u5728 Pod \u5185\u751f\u6210\u5bb9\u5668\u3002<\/p>\n
apiVersion<\/span>:<\/span> v1<\/span> #\u73fe\u5728\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u306fv1<\/span>\r\nkind<\/span>:<\/span> Pod<\/span> # Pod\u306b\u3064\u3044\u3066\u5b9a\u7fa9\u3059\u308b\u3053\u3068\u3092\u660e\u793a<\/span>\r\nmetadata<\/span>:<\/span>\r\n  labels<\/span>:<\/span>\r\n    name<\/span>:<\/span> cassandra<\/span> # label\u540d<\/span>\r\n  name<\/span>:<\/span> cassandra<\/span> #\u751f\u6210\u3055\u308c\u308bPod\u306e\u540d\u524d\u3002\u30af\u30e9\u30b9\u30bf\u5185\u3067unique\u3067\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3002Pod\u5185\u306e\u30b3\u30f3\u30c6\u30ca\u540d\u306fcontainers[0].name<\/span>\r\nspec<\/span>:<\/span>\r\n  containers<\/span>:<\/span>\r\n  -<\/span> args<\/span>:<\/span>\r\n    -<\/span> \/run.sh<\/span>\r\n    resources<\/span>:<\/span>\r\n      limits<\/span>:<\/span>\r\n        cpu<\/span>:<\/span> \"<\/span>0.1\"<\/span> # cluster manager\u306b0.1cpu\u3092\u8981\u6c42<\/span>\r\n    image<\/span>:<\/span> gcr.io\/google_containers\/cassandra:v5<\/span> #Docker Image\u540d\u3002\u30a4\u30e1\u30fc\u30b8\u306f\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u306fDocker Hub\u304b\u3089\u53d6\u5f97<\/span>\r\n    name<\/span>:<\/span> cassandra<\/span>\r\n    ports<\/span>:<\/span> #\u5916\u90e8\u306b\u516c\u958b\u3059\u308b\u65b9\u6cd5\u3068\u30dd\u30fc\u30c8\u3092\u5b9a\u7fa9<\/span>\r\n    -<\/span> name<\/span>:<\/span> cql<\/span> #Cassandra Query Language<\/span>\r\n      containerPort<\/span>:<\/span> 9042<\/span>\r\n    -<\/span> name<\/span>:<\/span> thrift<\/span>\r\n      containerPort<\/span>:<\/span> 9160<\/span>\r\n    volumeMounts<\/span>:<\/span>\r\n    -<\/span> name<\/span>:<\/span> data<\/span>\r\n      mountPath<\/span>:<\/span> \/cassandra_data<\/span>\r\n    env<\/span>:<\/span> #Cassandra\u306e\u30d1\u30e9\u30e1\u30fc\u30bf<\/span>\r\n    -<\/span> name<\/span>:<\/span> MAX_HEAP_SIZE<\/span>\r\n      value<\/span>:<\/span> 512M<\/span>\r\n    -<\/span> name<\/span>:<\/span> HEAP_NEWSIZE<\/span>\r\n      value<\/span>:<\/span> 100M<\/span>\r\n    -<\/span> name<\/span>:<\/span> POD_NAMESPACE<\/span>\r\n      valueFrom<\/span>:<\/span>\r\n        fieldRef<\/span>:<\/span>\r\n          fieldPath<\/span>:<\/span> metadata.namespace<\/span>\r\n  volumes<\/span>:<\/span>\r\n    -<\/span> name<\/span>:<\/span> data<\/span>\r\n      emptyDir<\/span>:<\/span> {}<\/span>\r\n<\/code><\/pre>\n
\u4f7f\u7528\u6307\u5b9a\u7684\u914d\u7f6e\u6587\u4ef6\u521b\u5efa\u8d44\u6e90\uff08Pod\uff09\u3002<\/p>\n
$ kubectl create -f cassandra.yaml \r\npods\/cassandra\r\n<\/code><\/pre>\n
\u8bf7\u786e\u8ba4Pod\u662f\u5426\u5df2\u88ab\u521b\u5efa\u3002<\/p>\n
$ kubectl get pods    \r\nNAME        READY     STATUS    RESTARTS   AGE\r\ncassandra   0\/1       Running   0          8s\r\n<\/code><\/pre>\n
\u67e5\u8be2 Resource \u7684\u8be6\u7ec6\u4fe1\u606f\u3002\u4ee5\u4e0b\u662f Pod\uff0c\u4f46\u9664\u4e86 pods (po) \u4e4b\u5916\uff0c\u8fd8\u53ef\u6307\u5b9a replicationcontrollers (rc)\u3001services (svc)\u3001nodes (no)\u3001events (ev)\u3001componentstatuses (cs)\u3001limitRanges (limits)\u3001persistentVolumes (pv)\u3001persistentVolumeClaims (pvc)\u3001resourceQuotas (quota) \u6216 secrets\u3002<\/p>\n
$ kubectl describe pod cassandra\r\nName:               cassandra\r\nNamespace:          default\r\nImage(s):           gcr.io\/google_containers\/cassandra:v5\r\nNode:               172.17.4.99\/172.17.4.99\r\nLabels:             name=cassandra\r\nStatus:             Running\r\nReason:             \r\nMessage:            \r\nIP:             10.2.67.6\r\nReplication Controllers:    <none>\r\nContainers:\r\n  cassandra:\r\n    Image:  gcr.io\/google_containers\/cassandra:v5\r\n    Limits:\r\n      cpu:      100m\r\n    State:      Running\r\n      Started:      Fri, 30 Oct 2015 01:13:29 +0000\r\n    Ready:      True\r\n    Restart Count:  0\r\nConditions:\r\n  Type      Status\r\n  Ready     True \r\nEvents:\r\n  FirstSeen             LastSeen            Count   From            SubobjectPath               Reason      Message\r\n  Fri, 30 Oct 2015 01:13:29 +0000   Fri, 30 Oct 2015 01:13:29 +0000 1   {scheduler }                            scheduled   Successfully assigned cassandra to 172.17.4.99\r\n  Fri, 30 Oct 2015 01:13:29 +0000   Fri, 30 Oct 2015 01:13:29 +0000 1   {kubelet 172.17.4.99}   implicitly required container POD   pulled      Pod container image \"gcr.io\/google_containers\/pause:0.8.0\" already present on machine\r\n  Fri, 30 Oct 2015 01:13:29 +0000   Fri, 30 Oct 2015 01:13:29 +0000 1   {kubelet 172.17.4.99}   implicitly required container POD   created     Created with docker id 2843e181382d\r\n  Fri, 30 Oct 2015 01:13:29 +0000   Fri, 30 Oct 2015 01:13:29 +0000 1   {kubelet 172.17.4.99}   implicitly required container POD   started     Started with docker id 2843e181382d\r\n  Fri, 30 Oct 2015 01:13:29 +0000   Fri, 30 Oct 2015 01:13:29 +0000 1   {kubelet 172.17.4.99}   spec.containers{cassandra}      created     Created with docker id d77752ffb587\r\n  Fri, 30 Oct 2015 01:13:29 +0000   Fri, 30 Oct 2015 01:13:29 +0000 1   {kubelet 172.17.4.99}   spec.containers{cassandra}      started     Started with docker id d77752ffb587\r\n<\/code><\/pre>\n
2.2. \u521b\u5efa\u670d\u52a1<\/h4>\n
\u5728Kubernetes\u4e2d\uff0cService\u88ab\u5b9a\u4e49\u4e3a\u5904\u7406\u76f8\u540c\u4efb\u52a1\u7684Pod\u7684\u96c6\u5408\u3002<\/p>\n
apiVersion<\/span>:<\/span> v1<\/span>  #\u73fe\u5728\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u306fv1<\/span>\r\nkind<\/span>:<\/span> Service<\/span>  #Service\u306b\u3064\u3044\u3066\u5b9a\u7fa9<\/span>\r\nmetadata<\/span>:<\/span>\r\n  labels<\/span>:<\/span>\r\n    name<\/span>:<\/span> cassandra<\/span>\r\n  name<\/span>:<\/span> cassandra<\/span>\r\nspec<\/span>:<\/span>\r\n  ports<\/span>:<\/span>\r\n    -<\/span> port<\/span>:<\/span> 9042<\/span>\r\n  selector<\/span>:<\/span> #query over labels(Pods\u306e\u30bb\u30c3\u30c8\uff09. \u3053\u306e\u30b5\u30fc\u30d3\u30b9\u306b\u6240\u5c5e\u3059\u308bPod\u3092\u9078\u629e\u3002<\/span>\r\n    name<\/span>:<\/span> cassandra<\/span> #\u3053\u306e\u4f8b\u3067\u306fcassandora\u3068\u3044\u3046label\u304c\u4ed8\u3044\u305fPod\u304c\u3053\u306eservice\u306b\u6240\u5c5e<\/span>\r\n<\/code><\/pre>\n
\u521b\u5efa\u670d\u52a1\u3002<\/p>\n
$ kubectl create -f cassandra-service.yaml \r\nservices\/cassandra\r\n<\/code><\/pre>\n
\u8bf7\u786e\u8ba4\u670d\u52a1\u662f\u5426\u5df2\u521b\u5efa\u3002<\/p>\n
$ kubectl get services\r\nNAME         LABELS                                    SELECTOR         IP(S)       PORT(S)\r\ncassandra    name=cassandra                            name=cassandra   10.3.0.80   9042\/TCP\r\nkubernetes   component=apiserver,provider=kubernetes   <none>           10.3.0.1    443\/TCP\r\n<\/code><\/pre>\n
$ kubectl describe service cassandra\r\nName:           cassandra\r\nNamespace:      default\r\nLabels:         name=cassandra\r\nSelector:       name=cassandra\r\nType:           ClusterIP\r\nIP:         10.3.0.80\r\nPort:           <unnamed>   9042\/TCP\r\nEndpoints:      10.2.67.6:9042\r\nSession Affinity:   None\r\nNo events.\r\n<\/code><\/pre>\n
\u5c06Pod\u5185\u7684Container\u65e5\u5fd7\u8f93\u51fa<\/p>\n
$ kubectl logs cassandra\r\n<\/code><\/pre>\n
2.3. \u521b\u5efa\u590d\u5236\u63a7\u5236\u5668<\/h4>\n
\u901a\u8fc7Kubernetes\uff0c\u53ef\u4ee5\u8f7b\u677e\u5730\u6784\u5efa\u548c\u6269\u5c55Cassandra\u96c6\u7fa4\u3002
\n\u590d\u5236\u63a7\u5236\u5668\u4f1a\u590d\u5236\u4e00\u7ec4\u76f8\u540c\u7c7b\u578b\u7684Pod\uff0c\u6839\u636e\u6307\u5b9a\u7684Pod\u6570\u91cf\u6dfb\u52a0\u6216\u5220\u9664Pod\u3002<\/p>\n
apiVersion<\/span>:<\/span> v1<\/span> #\u73fe\u5728\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u306fv1<\/span>\r\nkind<\/span>:<\/span> ReplicationController<\/span> #Replication Controller\u3092\u5b9a\u7fa9<\/span>\r\nmetadata<\/span>:<\/span>\r\n  labels<\/span>:<\/span>\r\n    name<\/span>:<\/span> cassandra<\/span>\r\n  name<\/span>:<\/span> cassandra<\/span>\r\nspec<\/span>:<\/span>\r\n  replicas<\/span>:<\/span> 1<\/span> #replica\u306e\u6570<\/span>\r\n  selector<\/span>:<\/span> #controller\u306eselector query<\/span>\r\n    name<\/span>:<\/span> cassandra<\/span>\r\n  template<\/span>:<\/span>\r\n    metadata<\/span>:<\/span>\r\n      labels<\/span>:<\/span>\r\n        name<\/span>:<\/span> cassandra<\/span>\r\n    spec<\/span>:<\/span>\r\n      containers<\/span>:<\/span>\r\n        -<\/span> command<\/span>:<\/span>\r\n            -<\/span> \/run.sh<\/span>\r\n          resources<\/span>:<\/span>\r\n            limits<\/span>:<\/span>\r\n              cpu<\/span>:<\/span> 0.1<\/span>\r\n          env<\/span>:<\/span>\r\n            -<\/span> name<\/span>:<\/span> MAX_HEAP_SIZE<\/span>\r\n              value<\/span>:<\/span> 512M<\/span>\r\n            -<\/span> name<\/span>:<\/span> HEAP_NEWSIZE<\/span>\r\n              value<\/span>:<\/span> 100M<\/span>\r\n            -<\/span> name<\/span>:<\/span> POD_NAMESPACE<\/span>\r\n              valueFrom<\/span>:<\/span>\r\n                fieldRef<\/span>:<\/span>\r\n                  fieldPath<\/span>:<\/span> metadata.namespace<\/span>\r\n          image<\/span>:<\/span> gcr.io\/google_containers\/cassandra:v5<\/span>\r\n          name<\/span>:<\/span> cassandra<\/span>\r\n          ports<\/span>:<\/span>\r\n            -<\/span> containerPort<\/span>:<\/span> 9042<\/span>\r\n              name<\/span>:<\/span> cql<\/span>\r\n            -<\/span> containerPort<\/span>:<\/span> 9160<\/span>\r\n              name<\/span>:<\/span> thrift<\/span>\r\n          volumeMounts<\/span>:<\/span>\r\n            -<\/span> mountPath<\/span>:<\/span> \/cassandra_data<\/span>\r\n              name<\/span>:<\/span> data<\/span>\r\n      volumes<\/span>:<\/span>\r\n        -<\/span> name<\/span>:<\/span> data<\/span>\r\n          emptyDir<\/span>:<\/span> {}<\/span>\r\n<\/code><\/pre>\n
\u521b\u5efa\u4e00\u4e2aController<\/p>\n
$ kubectl create -f cassandra-controller.yaml \r\nreplicationcontrollers\/cassandra\r\n<\/code><\/pre>\n
\u68c0\u67e5\u662f\u5426\u5df2\u521b\u5efa\u4e86Controller\u3002<\/p>\n
$ kubectl get rc \r\nCONTROLLER   CONTAINER(S)   IMAGE(S)                                SELECTOR         REPLICAS\r\ncassandra    cassandra      gcr.io\/google_containers\/cassandra:v5   name=cassandra   1\r\n<\/code><\/pre>\n
$ kubectl describe rc cassandra\r\nName:       cassandra\r\nNamespace:  default\r\nImage(s):   gcr.io\/google_containers\/cassandra:v5\r\nSelector:   name=cassandra\r\nLabels:     name=cassandra\r\nReplicas:   1 current \/ 1 desired\r\nPods Status:    1 Running \/ 0 Waiting \/ 0 Succeeded \/ 0 Failed\r\nNo events.\r\n<\/code><\/pre>\n
2.4. \u6269\u5c55\u548c\u7f29\u5c0f\u96c6\u7fa4\u89c4\u6a21<\/h4>\n
\u5c06Pod\u6570\u91cf\u6269\u5c55\u81f32\u4e2a\u3002<\/p>\n
$ kubectl scale rc cassandra --replicas=2\r\nscaled\r\n<\/code><\/pre>\n
\u8f93\u51fa\u96c6\u7fa4\u5185\u7684Pod\u5217\u8868\uff0c\u5e76\u8fdb\u884c\u6807\u7b7e\u8fc7\u6ee4\uff0c\u9009\u62e9\u6807\u7b7e\u540d\u4e3acassandra\u7684Pod\u3002\u53ef\u4ee5\u67e5\u770b\u5230\u4e24\u4e2acassandra Pod\u3002<\/p>\n
$ kubectl get pods -l=\"name=cassandra\"\r\nNAME              READY     STATUS    RESTARTS   AGE\r\ncassandra         1\/1       Running   0          10h\r\ncassandra-vb3mp   1\/1       Running   0          1m\r\n<\/code><\/pre>\n
\u4e00\u65b9\u9762\uff0c\u4f7f\u7528\u590d\u5236\u63a7\u5236\u5668\u751f\u6210\u7684\u968f\u673a\u5b57\u7b26\u4e32\u88ab\u9644\u52a0\u4e0a\u4e86\u3002\u4f7f\u7528nodetool\u6765\u68c0\u67e5\u96c6\u7fa4\u7684\u72b6\u6001\u4ee5\u786e\u4fdd\u5176\u6b63\u5e38\u8fd0\u884c\u3002\u4f7f\u7528kubectl exec\uff0c\u5728\u5bb9\u5668\u5185\u6267\u884c\u547d\u4ee4\u3002\uff08kubectl exec POD -c CONTAINER — COMMAND [args…]\uff09\u901a\u8fc7-t\u9009\u9879\u5c06stdin\u4f5c\u4e3atty\u6d41\u4f20\u9012\u7ed9\u5bb9\u5668\uff0c\u901a\u8fc7-i\u9009\u9879\u5c06stdin\u4f20\u9012\u7ed9\u5bb9\u5668\u3002<\/p>\n
core@localhost ~ $ kubectl exec -ti cassandra -- nodetool status\r\nDatacenter: datacenter1\r\n=======================\r\nStatus=Up\/Down\r\n|\/ State=Normal\/Leaving\/Joining\/Moving\r\n--  Address    Load       Tokens  Owns (effective)  Host ID                               Rack\r\nDN  10.2.67.7  ?          256     100.0%            186ce662-cc93-4e6c-90f2-1c58ffd5834a  rack1\r\nUN  10.2.64.3  199.82 KB  256     100.0%            b5a7fb71-58f3-4870-8cf4-c8218feb46e6  rack1\r\n<\/code><\/pre>\n
\u6267\u884ccqlsh\u547d\u4ee4\u3002\u5728\u5176\u4e2d\u6307\u5b9aService\u7684IP\u5730\u5740\u6216\u670d\u52a1\u540d\u3002<\/p>\n
$ kubectl get service cassandra\r\nNAME        LABELS           SELECTOR         IP(S)       PORT(S)\r\ncassandra   name=cassandra   name=cassandra   10.3.0.80   9042\/TCP\r\n\r\n$ kubectl exec -ti cassandra -- cqlsh 10.3.0.80    \r\nConnected to Test Cluster at 10.3.0.80:9042.\r\n[cqlsh 5.0.1 | Cassandra 2.1.7 | CQL spec 3.2.0 | Native protocol v3]\r\nUse HELP for help.\r\ncqlsh> \r\n\r\n$ kubectl exec -ti cassandra -- cqlsh cassandra.default.cluster.local\r\n<\/code><\/pre>\n
\u611f\u53d7\u5230\u73af\u5883\u642d\u5efa\u3001\u6269\u5c55\u7b49\u90fd\u975e\u5e38\u5feb\u901f\u4e14\u5bb9\u6613\uff0c\u63a5\u4e0b\u6765\u5c06\u5c1d\u8bd5\u901a\u8fc7\u6587\u6863\u4e86\u89e3\u5176\u5de5\u4f5c\u673a\u5236\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4e3a\u4e86\u7406\u89e3Kubernetes\uff0c\u9996\u5148\u8981\u62e5\u6709\u8fd0\u884c\u548c\u64cd\u4f5c\u7684\u5b9e\u9645\u611f\u3002\u5173\u4e8e\u5176\u8fd0\u4f5c\u673a\u5236\uff0c\u7a0d\u540e\u53ef\u4ee5\u901a\u8fc7\u9605\u8bfb\u6587\u6863\u8fdb\u884c\u603b\u7ed3\u3002 \u73af […]<\/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-50098","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\n\u4f7f\u7528Kubernetes\u6784\u5efaCassandra\u73af\u5883 - 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\/\u4f7f\u7528kubernetes\u6784\u5efacassandra\u73af\u5883\u3002\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u4f7f\u7528Kubernetes\u6784\u5efaCassandra\u73af\u5883\" \/>\n<meta property=\"og:description\" content=\"\u4e3a\u4e86\u7406\u89e3Kubernetes\uff0c\u9996\u5148\u8981\u62e5\u6709\u8fd0\u884c\u548c\u64cd\u4f5c\u7684\u5b9e\u9645\u611f\u3002\u5173\u4e8e\u5176\u8fd0\u4f5c\u673a\u5236\uff0c\u7a0d\u540e\u53ef\u4ee5\u901a\u8fc7\u9605\u8bfb\u6587\u6863\u8fdb\u884c\u603b\u7ed3\u3002 \u73af […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/\u4f7f\u7528kubernetes\u6784\u5efacassandra\u73af\u5883\u3002\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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