k8s使用StatefulSet方式部署应用自动创建PV
安装nfs# 安装nfs及相关依赖$ yum install -y nfs-utils rpcbind# 创建nfs数据目录及赋权$ mkdir /data/nfs && chmod 775 /data/nfs && chown nfsnobody /data/nfs# 编辑/etc/exports文件加入如下内容(括号内不要有空格)/data/nfs *(rw,n
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安装nfs
# 安装nfs及相关依赖
$ yum install -y nfs-utils rpcbind
# 创建nfs数据目录及赋权
$ mkdir /data/nfs && chmod 775 /data/nfs && chown nfsnobody /data/nfs
# 编辑/etc/exports文件加入如下内容(括号内不要有空格)
/data/nfs *(rw,no_root_squash,no_all_squash,sync)
# 启动nfs
$ systemctl start rpcbind && systemctl start nfs
# 查看挂载
$ showmount -e 10.168.1.226
# 挂载(测试Nfs是否正常)
$ mount -t nfs 10.168.1.226:/data/nfs /data/nfstest
创建rbac授权
$ vim rbac-rolebind.yaml
apiVersion: v1
kind: ServiceAccount
metadata:
name: nfs-provisioner
namespace: default
---
apiVersion: rbac.authorization.k8s.io/v1
kind: ClusterRole
metadata:
name: nfs-provisioner-runner
namespace: default
rules:
- apiGroups: [""]
resources: ["persistentvolumes"]
verbs: ["get", "list", "watch", "create", "delete"]
- apiGroups: [""]
resources: ["persistentvolumeclaims"]
verbs: ["get", "list", "watch", "update"]
- apiGroups: ["storage.k8s.io"]
resources: ["storageclasses"]
verbs: ["get", "list", "watch"]
- apiGroups: [""]
resources: ["events"]
verbs: ["watch", "create", "update", "patch"]
- apiGroups: [""]
resources: ["services", "endpoints"]
verbs: ["get","create","list", "watch","update"]
- apiGroups: ["extensions"]
resources: ["podsecuritypolicies"]
resourceNames: ["nfs-provisioner"]
verbs: ["use"]
---
kind: ClusterRoleBinding
apiVersion: rbac.authorization.k8s.io/v1
metadata:
name: run-nfs-provisioner
subjects:
- kind: ServiceAccount
name: nfs-provisioner
namespace: default
roleRef:
kind: ClusterRole
name: nfs-provisioner-runner
apiGroup: rbac.authorization.k8s.io
$ kubectl create -f rbac-rolebind.yaml
创建nfs-client-provisioner容器
$ vim nfs-deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
name: nfs-client-provisioner
namespace: default
spec:
replicas: 1 #副本数量为1
selector:
matchLabels:
app: nfs-client-provisioner
strategy:
type: Recreate
template:
metadata:
labels:
app: nfs-client-provisioner
spec:
serviceAccount: nfs-provisioner #指定账户
containers:
- name: nfs-client-provisioner
image: registry.cn-hangzhou.aliyuncs.com/open-ali/nfs-client-provisioner #使用的是这个镜像
volumeMounts:
- name: nfs-client-root
mountPath: /persistentvolumes #指定容器内的挂载目录
env:
- name: PROVISIONER_NAME #这是这个容器内置的变量
value: ydy-client #这是上面变量的值(名字)
- name: NFS_SERVER #内置变量,用于指定nfs服务的IP
value: 10.168.1.226
- name: NFS_PATH #内置变量,指定的是nfs共享的目录
value: /data/nfs
volumes: #这下面是指定上面挂载到容器内的nfs的路径及IP
- name: nfs-client-root
nfs:
server: 10.168.1.226
path: /data/nfs
$ kubectl create -f nfs-deployment.yaml
创建SC(StorageClass)
$ vim my-storageclass.yaml
apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
name: stateful-nfs
namespace: default
provisioner: ydy-client #这里要和第三个nfs-client-provisioner的env环境变量中的value值对应。
reclaimPolicy: Retain #回收策略为:retain,还有一个默认的值为“default”
$ kubectl create -f test-storageclass.yaml
使用StatefulSet部署mysql
$ vim mysql.yaml
---
apiVersion: v1
kind: Service
metadata:
name: mysql
labels:
app: mysql
spec:
selector:
app: mysql
clusterIP: None
ports:
- name: http
protocol: TCP
port: 3306
targetPort: 3306
---
apiVersion: v1
kind: Service
metadata:
name: mysql-nodeport
labels:
app: mysql
spec:
selector:
app: mysql
type: NodePort
ports:
- name: http
protocol: TCP
port: 3306
targetPort: 3306
nodePort: 3306
---
apiVersion: apps/v1
kind: StatefulSet
metadata:
name: mysql
spec:
serviceName: mysql
replicas: 1
selector:
matchLabels:
app: mysql
template:
metadata:
labels:
app: mysql
spec:
containers:
- name: mysql
image: mysql:8.0
ports:
- containerPort: 3306
volumeMounts:
- name: db-data
mountPath: "/var/lib/mysql"
env:
- name: MYSQL_ROOT_PASSWORD
value: "123456"
volumeClaimTemplates:
- metadata:
name: db-data
spec:
accessModes: [ "ReadWriteOnce" ]
storageClassName: "stateful-nfs"
resources:
requests:
storage: 100Gi
---
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