通过StatefulSets 在Kubernetes上部署Nacos
快速部署可以参考官网https://nacos.io/en-us/docs/use-nacos-with-kubernetes.html
1 快速部署
git clone https://github.com/nacos-group/nacos-k8s.git cd nacos-k8s chmod +x quick-startup.sh ./quick-startup.sh1.2服务测试
服务注册 curl -X PUT 'http://cluster-ip:8848/nacos/v1/ns/instance?serviceName=nacos.naming.serviceName&ip=20.18.7.10&port=8080' 服务发现 curl -X GET 'http://cluster-ip:8848/nacos/v1/ns/instances?serviceName=nacos.naming.serviceName' 发布配置 curl -X POST "http://cluster-ip:8848/nacos/v1/cs/configs?dataId=nacos.cfg.dataId&group=test&content=helloWorld" 获取配置 curl -X GET "http://cluster-ip:8848/nacos/v1/cs/configs?dataId=nacos.cfg.dataId&group=test"2 NFS方式部署。
NFS的使用是为了保留数据，数据库的数据以及nacos的数据日志等。
该方式部署需要对官方的yaml进行修改，下面列出实测可用的步骤及yaml文件
2.1部署NFS服务环境
找一台可以与k8s环境通信的内网机器192.168.1.10，在机器上部署nfs服务，选择合适磁盘，作为共享目录。
yum install -y nfs-utils rpcbind mkdir -p /data/nfs mkdir -p /data/mysql_master mkdir -p /data/mysql_slave vim /etc/exports /data/nfs *(insecure,rw,async,no_root_squash) /data/mysql_slave *(insecure,rw,async,no_root_squash) /data/mysql_master *(insecure,rw,async,no_root_squash) systemctl start rpcbind systemctl start nfs systemctl enable rpcbind systemctl enable nfs-server exportfs -a showmount -e2.2 k8s上部署nfs
cd nacos-k8s/deploy/nfs/ [root@localhost nfs]# ll 总用量 12 -rw-r--r--. 1 root root 153 10月 15 08:05 class.yaml -rw-r--r--. 1 root root 877 10月 15 14:37 deployment.yaml -rw-r--r--. 1 root root 1508 10月 15 08:05 rbac.yaml2.2.1 创建rbac,使用默认的rbac.yaml 不用修改，采用的是default命名空间，如果需要部署到特定的命名空间，则修改其中的namespace。
kubectl create -f rbac.yaml
kind: ClusterRole apiVersion: rbac.authorization.k8s.io/v1 metadata: name: nfs-client-provisioner-runner rules: - apiGroups: [""] resources: ["persistentvolumes"] verbs: ["get", "list", "watch", "create", "delete"] - apiGroups: [""] resources: ["persistentvolumeclaims"] verbs: ["get", "list", "watch", "update"] - apiGroups: [""] resources: ["endpoints"] verbs: ["get", "list", "watch", "create", "update", "patch"] - apiGroups: ["storage.k8s.io"] resources: ["storageclasses"] verbs: ["get", "list", "watch"] - apiGroups: [""] resources: ["events"] verbs: ["create", "update", "patch"] --- kind: ClusterRoleBinding apiVersion: rbac.authorization.k8s.io/v1 metadata: name: run-nfs-client-provisioner subjects: - kind: ServiceAccount name: nfs-client-provisioner namespace: default roleRef: kind: ClusterRole name: nfs-client-provisioner-runner apiGroup: rbac.authorization.k8s.io --- kind: Role apiVersion: rbac.authorization.k8s.io/v1 metadata: name: leader-locking-nfs-client-provisioner rules: - apiGroups: [""] resources: ["endpoints"] verbs: ["get", "list", "watch", "create", "update", "patch"] --- kind: RoleBinding apiVersion: rbac.authorization.k8s.io/v1 metadata: name: leader-locking-nfs-client-provisioner subjects: - kind: ServiceAccount name: nfs-client-provisioner # replace with namespace where provisioner is deployed namespace: default roleRef: kind: Role name: leader-locking-nfs-client-provisioner2.2.2 创建ServiceAccount和部署NFS-Client Provisioner
kubectl create -f deployment.yaml ##修改ip和目录
apiVersion: v1 kind: ServiceAccount metadata: name: nfs-client-provisioner --- kind: Deployment apiVersion: extensions/v1beta1 metadata: name: nfs-client-provisioner spec: replicas: 1 strategy: type: Recreate template: metadata: labels: app: nfs-client-provisioner spec: serviceAccount: nfs-client-provisioner containers: - name: nfs-client-provisioner image: quay.io/external_storage/nfs-client-provisioner:latest volumeMounts: - name: nfs-client-root mountPath: /persistentvolumes env: - name: PROVISIONER_NAME value: fuseim.pri/ifs - name: NFS_SERVER value: 192.168.1.10 - name: NFS_PATH value: /data/nfs volumes: - name: nfs-client-root nfs: server: 192.168.1.10 path: /data/nfs2.2.3 创建NFS StorageClass
kubectl create -f class.yaml ##无需修改yaml
apiVersion: storage.k8s.io/v1 kind: StorageClass metadata: name: managed-nfs-storage provisioner: fuseim.pri/ifs parameters: archiveOnDelete: "false"2.3 部署数据库
cd nacos-k8s/deploy/mysql/
2.3.1部署主数据库
kubectl create -f mysql-master-nfs.yaml ##需要修改的是nfs的IP和目录
apiVersion: v1 kind: ReplicationController metadata: name: mysql-master labels: name: mysql-master spec: replicas: 1 selector: name: mysql-master template: metadata: labels: name: mysql-master spec: containers: - name: master image: nacos/nacos-mysql-master:latest ports: - containerPort: 3306 volumeMounts: - name: mysql-master-data mountPath: /var/lib/mysql env: - name: MYSQL_ROOT_PASSWORD value: "root" - name: MYSQL_DATABASE value: "nacos_devtest" - name: MYSQL_USER value: "nacos" - name: MYSQL_PASSWORD value: "nacos" - name: MYSQL_REPLICATION_USER value: 'nacos_ru' - name: MYSQL_REPLICATION_PASSWORD value: 'nacos_ru' volumes: - name: mysql-master-data nfs: server: 192.168.1.10 path: /data/mysql_master --- apiVersion: v1 kind: Service metadata: name: mysql-master labels: name: mysql-master spec: ports: - port: 3306 targetPort: 3306 selector: name: mysql-master2.3.2 部署从数据库
kubectl create -f mysql-slave-nfs.yaml
apiVersion: v1 kind: ReplicationController metadata: name: mysql-slave labels: name: mysql-slave spec: replicas: 1 selector: name: mysql-slave template: metadata: labels: name: mysql-slave spec: containers: - name: slave image: nacos/nacos-mysql-slave:latest ports: - containerPort: 3306 volumeMounts: - name: mysql-slave-data mountPath: /var/lib/mysql env: - name: MYSQL_ROOT_PASSWORD value: "root" - name: MYSQL_REPLICATION_USER value: 'nacos_ru' - name: MYSQL_REPLICATION_PASSWORD value: 'nacos_ru' volumes: - name: mysql-slave-data nfs: server: 192.168.1.10 path: /data/mysql_slave --- apiVersion: v1 kind: Service metadata: name: mysql-slave labels: name: mysql-slave spec: ports: - port: 3306 targetPort: 3306 selector: name: mysql-slave2.4 部署nacos
cd nacos-k8s/deploy/nacos/
kubectl create -f nacos-pvc-nfs.yaml ##该文件需要大修改，主要是改成基于quickstart版本增加挂载，其他无关的内容清理掉，具体如下
注意- name: NACOS_SERVERS这一项，创建时候域名是会自动生成一个这样的cluster.local，nacos-0.nacos-headless.default.svc.cluster.local:8848，我的k8s默认集群名设置成了cluster.test。所以文件中修改成这样的nacos-0.nacos-headless.default.svc.cluster.test:8848。
--- apiVersion: v1 kind: Service metadata: name: nacos-headless labels: app: nacos-headless spec: ports: - port: 8848 name: server targetPort: 8848 selector: app: nacos --- apiVersion: v1 kind: ConfigMap metadata: name: nacos-cm data: mysql.master.db.name: "nacos_devtest" mysql.master.port: "3306" mysql.slave.port: "3306" mysql.master.user: "nacos" mysql.master.password: "nacos" --- apiVersion: apps/v1 kind: StatefulSet metadata: name: nacos spec: serviceName: nacos-headless replicas: 3 template: metadata: labels: app: nacos annotations: pod.alpha.kubernetes.io/initialized: "true" spec: affinity: podAntiAffinity: requiredDuringSchedulingIgnoredDuringExecution: - labelSelector: matchExpressions: - key: "app" operator: In values: - nacos-headless topologyKey: "kubernetes.io/hostname" containers: - name: k8snacos imagePullPolicy: Always image: nacos/nacos-server:latest resources: requests: memory: "2Gi" cpu: "500m" ports: - containerPort: 8848 name: client env: - name: NACOS_REPLICAS value: "3" - name: SERVICE_NAME value: "nacos-headless" - name: POD_NAMESPACE valueFrom: fieldRef: apiVersion: v1 fieldPath: metadata.namespace - name: MYSQL_MASTER_SERVICE_DB_NAME valueFrom: configMapKeyRef: name: nacos-cm key: mysql.master.db.name - name: MYSQL_MASTER_SERVICE_PORT valueFrom: configMapKeyRef: name: nacos-cm key: mysql.master.port - name: MYSQL_SLAVE_SERVICE_PORT valueFrom: configMapKeyRef: name: nacos-cm key: mysql.slave.port - name: MYSQL_MASTER_SERVICE_USER valueFrom: configMapKeyRef: name: nacos-cm key: mysql.master.user - name: MYSQL_MASTER_SERVICE_PASSWORD valueFrom: configMapKeyRef: name: nacos-cm key: mysql.master.password - name: NACOS_SERVER_PORT value: "8848" - name: PREFER_HOST_MODE value: "hostname" - name: NACOS_SERVERS value: "nacos-0.nacos-headless.default.svc.cluster.test:8848 nacos-1.nacos-headless.default.svc.cluster.test:8848 nacos-2.nacos-headless.default.svc.cluster.test:8848" volumeMounts: - name: datadir mountPath: /home/nacos/data - name: logdir mountPath: /home/nacos/logs volumeClaimTemplates: - metadata: name: datadir annotations: volume.beta.kubernetes.io/storage-class: "managed-nfs-storage" spec: accessModes: [ "ReadWriteMany" ] resources: requests: storage: 5Gi - metadata: name: logdir annotations: volume.beta.kubernetes.io/storage-class: "managed-nfs-storage" spec: accessModes: [ "ReadWriteMany" ] resources: requests: storage: 5Gi selector: matchLabels: app: nacos也可以使用这种原始的
--- apiVersion: v1 kind: Service metadata: name: nacos-headless labels: app: nacos annotations: service.alpha.kubernetes.io/tolerate-unready-endpoints: "true" spec: ports: - port: 8848 name: server targetPort: 8848 clusterIP: None selector: app: nacos --- apiVersion: v1 kind: ConfigMap metadata: name: nacos-cm data: mysql.master.db.name: "nacos_devtest" mysql.master.port: "3306" mysql.slave.port: "3306" mysql.master.user: "nacos" mysql.master.password: "nacos" --- apiVersion: apps/v1 kind: StatefulSet metadata: name: nacos spec: serviceName: nacos-headless replicas: 2 template: metadata: labels: app: nacos annotations: pod.alpha.kubernetes.io/initialized: "true" spec: affinity: podAntiAffinity: requiredDuringSchedulingIgnoredDuringExecution: - labelSelector: matchExpressions: - key: "app" operator: In values: - nacos topologyKey: "kubernetes.io/hostname" serviceAccountName: nfs-client-provisioner initContainers: - name: peer-finder-plugin-install image: nacos/nacos-peer-finder-plugin:latest imagePullPolicy: Always volumeMounts: - mountPath: "/home/nacos/plugins/peer-finder" name: plugindir containers: - name: nacos imagePullPolicy: Always image: nacos/nacos-server:latest resources: requests: memory: "2Gi" cpu: "1000m" ports: - containerPort: 8848 name: client-port env: - name: NACOS_REPLICAS value: "3" - name: SERVICE_NAME value: "nacos-headless" - name: POD_NAMESPACE valueFrom: fieldRef: apiVersion: v1 fieldPath: metadata.namespace - name: MYSQL_MASTER_SERVICE_DB_NAME valueFrom: configMapKeyRef: name: nacos-cm key: mysql.master.db.name - name: MYSQL_MASTER_SERVICE_PORT valueFrom: configMapKeyRef: name: nacos-cm key: mysql.master.port - name: MYSQL_SLAVE_SERVICE_PORT valueFrom: configMapKeyRef: name: nacos-cm key: mysql.slave.port - name: MYSQL_MASTER_SERVICE_USER valueFrom: configMapKeyRef: name: nacos-cm key: mysql.master.user - name: MYSQL_MASTER_SERVICE_PASSWORD valueFrom: configMapKeyRef: name: nacos-cm key: mysql.master.password - name: NACOS_SERVER_PORT value: "8848" - name: PREFER_HOST_MODE value: "hostname" readinessProbe: httpGet: port: client-port path: /nacos/v1/console/health/readiness initialDelaySeconds: 60 timeoutSeconds: 3 livenessProbe: httpGet: port: client-port path: /nacos/v1/console/health/liveness initialDelaySeconds: 60 timeoutSeconds: 3 volumeMounts: - name: plugindir mountPath: /home/nacos/plugins/peer-finder - name: datadir mountPath: /home/nacos/data - name: logdir mountPath: /home/nacos/logs volumeClaimTemplates: - metadata: name: plugindir annotations: volume.beta.kubernetes.io/storage-class: "managed-nfs-storage" spec: accessModes: [ "ReadWriteMany" ] resources: requests: storage: 5Gi - metadata: name: datadir annotations: volume.beta.kubernetes.io/storage-class: "managed-nfs-storage" spec: accessModes: [ "ReadWriteMany" ] resources: requests: storage: 5Gi - metadata: name: logdir annotations: volume.beta.kubernetes.io/storage-class: "managed-nfs-storage" spec: accessModes: [ "ReadWriteMany" ] resources: requests: storage: 5Gi selector: matchLabels: app: nacos查看结果
[root@localhost nacos]# kubectl get pod NAME READY STATUS RESTARTS AGE mysql-master-hnnzq 1/1 Running 0 43h mysql-slave-jjq98 1/1 Running 0 43h nacos-0 1/1 Running 0 41h nacos-1 1/1 Running 0 41h nacos-2 1/1 Running 0 41h nfs-client-provisioner-57c8c85896-cpxtx 1/1 Running 0 45h [root@localhost nacos]# kubectl get svc NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE kubernetes ClusterIP 172.21.0.1然后用ingress映射出去就可以访问8848端口
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