helm安装mysql

环境：

3节点的k8s集群

前提条件：配置好nfs

1.下载镜像获取配置文件
1.# 拉取 mysql helm charts 到本地目录
[root@master ~]# cd ~
[root@master ~]# helm pull stable/mysql --untar
# 修改定义配置即可
[root@master ~]# cd mysql
[root@master ~]#vim values.yaml

修改镜像镜像地址

原来的

image: "mysql"
imageTag: "5.7.30"

strategy:
  type: Recreate

busybox:
  image: "busybox"
  tag: "1.32"

testFramework:
  enabled: true
  image: "bats/bats"
  tag: "1.2.1"
  imagePullPolicy: IfNotPresent
  securityContext: {}

修改为:

image: "registry.cn-shenzhen.aliyuncs.com/hxlk8s00/mysql"
imageTag: "5.7.30"

strategy:
  type: Recreate

busybox:
  image: "registry.cn-shenzhen.aliyuncs.com/hxlk8s00/busybox"
  tag: "1.32"

testFramework:
  enabled: true
  image: "registry.cn-shenzhen.aliyuncs.com/hxlk8s00/bats"
  tag: "1.2.1"
  imagePullPolicy: IfNotPresent
  securityContext: {}

2.指定配置文件进行安装
cd /root/mysql
helm install db stable/mysql -f values.yaml

指定values.yaml配置文件安装的目的是可以自定义镜像,因为默认的镜像访问不了了.

3.创建pv
准备配置文件
cd /root/

# cat pv.yml
apiVersion: v1
kind: PersistentVolume
metadata:
  name: dbdata
spec:
  capacity:
    storage: 8Gi
  accessModes:
    - ReadWriteOnce
  nfs:
    path: /nfs/k8s
    server: 192.168.1.102

注意:/nfs/k8s目录不需要有任何文件,否则mysql初始化失败

创建pv
cd /root
kubectl apply -f pv.yml

查看运行情况
[root@master ~]# kubectl get pods
NAME READY STATUS RESTARTS AGE
db-mysql-bfcf7bbdb-5hspk 1/1 Running 3 (21s ago) 2m17s

4.登录mysql
直接进入容器，查看mysql可以使用
# 查看mysql密码
# kubectl get secret --namespace default db-mysql -o jsonpath="{.data.mysql-root-password}" | base64 --decode; echo
输出结果:
qxkiydybKY

[root@master ~]# kubectl get pods
NAME READY STATUS RESTARTS AGE
db-mysql-bfcf7bbdb-fq6v9 1/1 Running 0 3m11s

# kubectl exec -it db-mysql-bfcf7bbdb-5hspk bash
# mysql -uroot -p