接前话,仍然“只准备 1 个 server 节点和 3 个 agent 节点”,非高可用 K3s 集群
创建配置文件
创建 MySQL Deployment
mysql-deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
name: mysql
spec:
selector:
matchLabels:
app: mysql
replicas: 1
template:
metadata:
labels:
app: mysql
spec:
containers:
- name: mysql
image: mysql:8.4.2
env:
- name: MYSQL_ROOT_PASSWORD
value: "yourpassword"
ports:
- containerPort: 3306
创建 MySQL Service
mysql-service.yaml
apiVersion: v1
kind: Service
metadata:
name: mysql
spec:
ports:
- port: 3306
selector:
app: mysql
clusterIP: None
部署 MySQL
使用 kubectl
命令将上述配置应用到 K3s 集群中
kubectl apply -f mysql-deployment.yaml
kubectl apply -f mysql-service.yaml
验证部署
使用以下命令来验证 MySQL 是否成功部署
kubectl get pods
kubectl get svc
root@k3s-master:~# kubectl get pods
NAME READY STATUS RESTARTS AGE
mysql-8488594b75-gjntt 1/1 Running 0 15s
root@k3s-master:~# kubectl get svc
NAME TYPE CLUSTER-IP EXTERNAL-IP PORT(S) AGE
kubernetes ClusterIP 10.43.0.1 <none> 443/TCP 12m
mysql ClusterIP None <none> 3306/TCP 14s
进入 MySQL pod
root@k3s-master:~# kubectl exec -it mysql-8488594b75-gjntt -- /bin/bash
bash-5.1# mysql -u root -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 8
Server version: 8.4.2 MySQL Community Server - GPL
Copyright (c) 2000, 2024, Oracle and/or its affiliates.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql>
mysql> quit
Bye
参考资料
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