k8s 映射 外部服务

把外部的服务，通过创建service和endpoint，把它映射到k8s内部来使用。

操作步骤：
在10.0.0.13上安装数据库

yum install mariadb-server -y
systemctl start mariadb.service
systemctl enable mariadb,service

创建数据库的安全初始化
mysql_secure_installation

先回车，再选n，一路y

根据原配置，创建数据库
mysql    #进入数据库
创建数据库
create database wrodpress;

创建远程连接用户
grant all on wordpress.* to wordpress@'%' identified by 'wordpress';

yml文件

[root@k8s-master wordpress]# cat mysql-ep.yml 
apiVersion: v1
kind: Endpoints
metadata:
  name: mysql-wp
  namespace: wordpress
subsets:
- addresses:
  - ip: 10.0.0.13
  ports:
  - port: 3306 
    protocol: TCP

`[root@k8s-master wordpress]# cat mysql-svc.yml apiVersion: v1 kind: Service metadata: namespace: wordpress name: mysql-wp spec: ports: - port: 3306 targetPort: 3306

[root@k8s-master wordpress]# cat wordpress-rc.yml
apiVersion: v1
kind: ReplicationController
metadata:
namespace: wordpress
name: wordpress
spec:
replicas: 1
selector:
app: wordpress
template:
metadata:
labels:
app: wordpress
spec:
volumes:
- name: wordpress-web
nfs:
path: /data/wordpress-web
server: 10.0.0.11
containers:
- name: wordpress
image: 10.0.0.11:5000/wordpress:latest
ports:
- containerPort: 80
volumeMounts:
- mountPath: /var/www/html
name: wordpress-web
env:
- name: WORDPRESS_DB_HOST
value: 'mysql-wp'
- name: WORDPRESS_DB_USER
value: 'wordpress'
- name: WORDPRESS_DB_PASSWORD
value: 'wordpress'

[root@k8s-master wordpress]# cat wordpress-svc.yml
apiVersion: v1
kind: Service
metadata:
namespace: wordpress
name: wordpress
spec:
type: NodePort
ports:
- port: 80
nodePort: 30009
selector:
app: wordpress

```

创建
kubectl create -f .

打开网页验证