通过StatefulSets 在Kubernetes上部署Nacos

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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.sh

1.2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 -e

2.2 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.yaml

2.2.1 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-provisioner

2.2.2 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/nfs

2.2.3 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-master

2.3.2 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-slave

2.4  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              443/TCP     9d mysql-master                       ClusterIP   172.21.12.11            3306/TCP    43h mysql-slave                        ClusterIP   172.21.1.9              3306/TCP    43h nacos-headless                     ClusterIP   172.21.11.220           8848/TCP    41h nginx-svc                          ClusterIP   172.21.1.104            10080/TCP   8d [root@localhost nacos]# kubectl get storageclass NAME                       PROVISIONER      AGE alicloud-disk-available    alicloud/disk    9d alicloud-disk-efficiency   alicloud/disk    9d alicloud-disk-essd         alicloud/disk    9d alicloud-disk-ssd          alicloud/disk    9d managed-nfs-storage        fuseim.pri/ifs   45h[root@localhost nacos]# kubectl get pv,pvc NAME                                                        CAPACITY   ACCESS MODES   RECLAIM POLICY   STATUS   CLAIM                       STORAGECLASS          REASON   AGE persistentvolume/pvc-c920f9cf-f56f-11e9-90dc-da6119823c38   5Gi        RWX            Delete           Bound    default/datadir-nacos-0     managed-nfs-storage            43h persistentvolume/pvc-c921977d-f56f-11e9-90dc-da6119823c38   5Gi        RWX            Delete           Bound    default/logdir-nacos-0      managed-nfs-storage            43h persistentvolume/pvc-c922401f-f56f-11e9-90dc-da6119823c38   5Gi        RWX            Delete           Bound    default/plugindir-nacos-0   managed-nfs-storage            43h persistentvolume/pvc-db3ccda6-f56f-11e9-90dc-da6119823c38   5Gi        RWX            Delete           Bound    default/datadir-nacos-1     managed-nfs-storage            43h persistentvolume/pvc-db3dc25a-f56f-11e9-90dc-da6119823c38   5Gi        RWX            Delete           Bound    default/logdir-nacos-1      managed-nfs-storage            43h persistentvolume/pvc-db3eb86c-f56f-11e9-90dc-da6119823c38   5Gi        RWX            Delete           Bound    default/plugindir-nacos-1   managed-nfs-storage            43h persistentvolume/pvc-fa47ae6e-f57a-11e9-90dc-da6119823c38   5Gi        RWX            Delete           Bound    default/logdir-nacos-2      managed-nfs-storage            41h persistentvolume/pvc-fa489723-f57a-11e9-90dc-da6119823c38   5Gi        RWX            Delete           Bound    default/plugindir-nacos-2   managed-nfs-storage            41h persistentvolume/pvc-fa494137-f57a-11e9-90dc-da6119823c38   5Gi        RWX            Delete           Bound    default/datadir-nacos-2     managed-nfs-storage            41h NAME                                      STATUS   VOLUME                                     CAPACITY   ACCESS MODES   STORAGECLASS          AGE persistentvolumeclaim/datadir-nacos-0     Bound    pvc-c920f9cf-f56f-11e9-90dc-da6119823c38   5Gi        RWX            managed-nfs-storage   43h persistentvolumeclaim/datadir-nacos-1     Bound    pvc-db3ccda6-f56f-11e9-90dc-da6119823c38   5Gi        RWX            managed-nfs-storage   43h persistentvolumeclaim/datadir-nacos-2     Bound    pvc-fa494137-f57a-11e9-90dc-da6119823c38   5Gi        RWX            managed-nfs-storage   41h persistentvolumeclaim/logdir-nacos-0      Bound    pvc-c921977d-f56f-11e9-90dc-da6119823c38   5Gi        RWX            managed-nfs-storage   43h persistentvolumeclaim/logdir-nacos-1      Bound    pvc-db3dc25a-f56f-11e9-90dc-da6119823c38   5Gi        RWX            managed-nfs-storage   43h persistentvolumeclaim/logdir-nacos-2      Bound    pvc-fa47ae6e-f57a-11e9-90dc-da6119823c38   5Gi        RWX            managed-nfs-storage   41h persistentvolumeclaim/plugindir-nacos-0   Bound    pvc-c922401f-f56f-11e9-90dc-da6119823c38   5Gi        RWX            managed-nfs-storage   43h persistentvolumeclaim/plugindir-nacos-1   Bound    pvc-db3eb86c-f56f-11e9-90dc-da6119823c38   5Gi        RWX            managed-nfs-storage   43h persistentvolumeclaim/plugindir-nacos-2   Bound    pvc-fa489723-f57a-11e9-90dc-da6119823c38   5Gi        RWX            managed-nfs-storage   41h [root@localhost nacos]#

然后用ingress映射出去就可以访问8848端口

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