kubernetes生產實踐之mysql
阿新 • • 發佈：2021-03-11
### 簡介
kubedb mysql 生命週期及特性
```
Supported MySQL Features
Features Availability
Clustering ✓
Persistent Volume ✓
Instant Backup ✓
Scheduled Backup ✓
Initialize using Snapshot ✓
Initialize using Script (*.sql, *sql.gz and/or *.sh) ✓
Custom Configuration ✓
Using Custom docker image ✓
Builtin Prometheus Discovery ✓
Using Prometheus operator ✓
```
### 檢視kubedb支援的mysql版本
```
[root@qd01-stop-k8s-master001 mysql]# kubectl get mysqlversions
NAME VERSION DB_IMAGE DEPRECATED AGE
5.7.25-v1 5.7.25 kubedb/mysql:5.7.25-v1 17h
5.7.29 5.7.29 kubedb/mysql:5.7.29 17h
5.7.31 5.7.31 kubedb/mysql:5.7.31 17h
8.0.14-v1 8.0.14 kubedb/mysql:8.0.14-v1 17h
8.0.20 8.0.20 kubedb/mysql:8.0.20 17h
8.0.21 8.0.21 kubedb/mysql:8.0.21 17h
8.0.3-v1 8.0.3 kubedb/mysql:8.0.3-v1 17h
```
### 編寫配置檔案
mode: GroupReplication
group.name可以使用這個網站生成：https://www.uuidgenerator.net/version4
```
apiVersion: kubedb.com/v1alpha2
kind: MySQL
metadata:
name: mysql-group-test
namespace: op
spec:
version: "8.0.21"
replicas: 3
topology:
mode: GroupReplication
group:
name: "d7f38430-d9ee-464b-af43-da9efa26fe02"
baseServerID: 100
storageType: Durable
storage:
storageClassName: "rbd"
accessModes:
- ReadWriteOnce
resources:
requests:
storage: 50Gi
terminationPolicy: Halt
```
### 安裝Mysql
```
[root@qd01-stop-k8s-master001 mysql]# kubectl apply -f mysql-cluster-install.yaml
mysql.kubedb.com/mysql-group-test created
[root@qd01-stop-k8s-master001 mysql]# kubectl get po,ep,svc -n op
NAME READY STATUS RESTARTS AGE
pod/mysql-group-test-0 2/2 Running 0 14m
pod/mysql-group-test-1 2/2 Running 0 9m41s
pod/mysql-group-test-2 2/2 Running 0 4m19s
NAME ENDPOINTS AGE
endpoints/mysql-group-test 100.64.147.157:3306 14m
endpoints/mysql-group-test-pods 100.64.122.198:3306,100.64.147.157:3306,100.98.174.219:3306 14m
endpoints/mysql-group-test-standby 100.98.174.219:3306 14m
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
service/mysql-group-test ClusterIP 10.108.25.179