K8S 集成 KubeSphere
准备工作
如需在 Kubernetes 上安装 KubeSphere 3.2.1,您的 Kubernetes 版本必须为:v1.19.x,v1.20.x,v1.21.x 或 v1.22.x(实验性支持)。
可用 CPU > 1 核;内存 > 2 G。
Kubernetes 集群已配置默认 StorageClass(请使用 kubectl get sc 进行确认)。
使用 --cluster-signing-cert-file 和 --cluster-signing-key-file 参数启动集群时,kube-apiserver 将启用 CSR 签名功能。请参见 RKE 安装问题。
# 检查版本
kubectl version
# 检查可用资源
free -g
# 检查是否有默认 StorageClass
kubectl get sc
可以看到K8S集群中目前没有 StorageClass 资源,需要创建资源。
配置动态供应的默认存储
---
# 创建动态供应的默认存储
apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
name: nfs-storage
annotations:
storageclass.kubernetes.io/is-default-class: "true"
provisioner: k8s-sigs.io/nfs-subdir-external-provisioner
parameters:
archiveOnDelete: "true" ## 删除pv的时候,pv的内容是否要备份
---
# 创建nfs部署
apiVersion: apps/v1
kind: Deployment
metadata:
name: nfs-client-provisioner
labels:
app: nfs-client-provisioner
namespace: k8s-test
spec:
replicas: 1
strategy:
type: Recreate
selector:
matchLabels:
app: nfs-client-provisioner
template:
metadata:
labels:
app: nfs-client-provisioner
spec:
serviceAccountName: nfs-client-provisioner
containers:
- name: nfs-client-provisioner
image: registry.cn-hangzhou.aliyuncs.com/lfy_k8s_images/nfs-subdir-external-provisioner:v4.0.2
resources:
limits:
cpu: 100G
requests:
cpu: 100G
volumeMounts:
- name: nfs-client-root
mountPath: /persistentvolumes
env:
- name: PROVISIONER_NAME
value: k8s-sigs.io/nfs-subdir-external-provisioner
- name: NFS_SERVER
value: 172.31.39.64 ## 指定自己nfs服务器地址
- name: NFS_PATH
value: /root/nfs/data ## nfs服务器共享的目录
volumes:
- name: nfs-client-root
nfs:
server: 172.31.39.64
path: /root/nfs/data
---
# 创建服务账户
apiVersion: v1
kind: ServiceAccount
metadata:
name: nfs-client-provisioner
namespace: k8s-test
---
kind: ClusterRole
apiVersion: rbac.authorization.k8s.io/v1
metadata:
name: nfs-client-provisioner-runner
rules:
- apiGroups: [""]
resources: ["nodes"]
verbs: ["get", "list", "watch"]
- 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: ["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: k8s-test
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
namespace: k8s-test
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
namespace: k8s-test
subjects:
- kind: ServiceAccount
name: nfs-client-provisioner
namespace: k8s-test
roleRef:
kind: Role
name: leader-locking-nfs-client-provisioner
apiGroup: rbac.authorization.k8s.io