07-实战
使用我们学过的知识来部署 WordPress。
WordPress、MySQL 这两个应用被封装成了 Pod（由于它们都是在线业务），运行所需的环境变量保存在 ConfigMap中，统一用“声明式”来管理，比起 Shell 脚本更容易阅读和版本化管理。
WordPress 网站搭建步骤
步骤一 定义MySQL YAML
定义MySQL configmap:
MySQL 需要4个环境变量 mysql-cm.yaml
|
YAML
apiVersion: v1
kind: ConfigMap
metadata:
name: mysql-cm
data:
MYSQL_DATABASE: 'db_wordpress'
MYSQL_USER: 'wordpress'
MYSQL_PASSWORD: '123456'
MYSQL_ROOT_PASSWORD: '123456'
|
定义 MySQL Pod： mysql-pod.yaml
|
YAML
apiVersion: v1
kind: Pod
metadata:
name: mysql-pod
labels:
app: wordpress
role: database
spec:
containers:
- name: wp-mysql
image: mysql:5.7
imagePullPolicy: IfNotPresent
ports:
- containerPort: 3306
env:
- name: MYSQL_DATABASE
valueFrom:
configMapKeyRef:
name: mysql-cm
key: MYSQL_DATABASE
- name: MYSQL_USER
valueFrom:
configMapKeyRef:
name: mysql-cm
key: MYSQL_USER
- name: MYSQL_PASSWORD
valueFrom:
configMapKeyRef:
name: mysql-cm
key: MYSQL_PASSWORD
- name: MYSQL_ROOT_PASSWORD
valueFrom:
configMapKeyRef:
name: mysql-cm
key: MYSQL_ROOT_PASSWORD
|
步骤二 定义 WordPress YAML
定义 WordPress Configmap：wp-cm.yaml
|
YAML
apiVersion: v1
kind: ConfigMap
metadata:
name: wp-cm
data:
WORDPRESS_DB_HOST: '100.100.239.19' # mysql pod 的 IP 地址
WORDPRESS_DB_USER: 'wordpress'
WORDPRESS_DB_PASSWORD: '123456'
WORDPRESS_DB_NAME: 'db_wordpress'
|
定义 WordPress Pod： wp-pod.yaml
|
YAML
apiVersion: v1
kind: Pod
metadata:
name: wp-pod
labels:
app: wordpress
role: website
spec:
containers:
- name: wp-pod
image: wordpress:6
imagePullPolicy: IfNotPresent
ports:
- containerPort: 80
env:
- name: WORDPRESS_DB_HOST
valueFrom:
configMapKeyRef:
name: wp-cm
key: WORDPRESS_DB_HOST
- name: WORDPRESS_DB_USER
valueFrom:
configMapKeyRef:
name: wp-cm
key: WORDPRESS_DB_USER
- name: WORDPRESS_DB_PASSWORD
valueFrom:
configMapKeyRef:
name: wp-cm
key: WORDPRESS_DB_PASSWORD
- name: WORDPRESS_DB_NAME
valueFrom:
configMapKeyRef:
name: wp-cm
key: WORDPRESS_DB_NAME
|
步骤三 部署 MySQL 和 WordPress
步骤四 访问 WordPress
查看 Pod IP 地址
|
YAML
kubectl get pods -o wide
|
从外部访问 Pod
|
YAML
kubectl port-forward --address 0.0.0.0 wp-pod 8080:80
|
优化 configmap 引用
|
YAML
apiVersion: v1
kind: Pod
metadata:
name: wp-pod
labels:
app: wordpress
role: website
spec:
containers:
- name: wp-pod
image: wordpress:6
imagePullPolicy: IfNotPresent
ports:
- containerPort: 80
envFrom:
- prefix: 'WORDPRESS_DB_'
configMapRef:
name: wp-cm
|
|
YAML
apiVersion: v1
kind: ConfigMap
metadata:
name: wp-cm
data:
HOST: '100.100.239.19'
USER: 'wordpress'
PASSWORD: '123456'
NAME: 'db_wordpress'
|
【版权声明】本文为华为云社区用户原创内容，转载时必须标注文章的来源（华为云社区）、文章链接、文章作者等基本信息， 否则作者和本社区有权追究责任。如果您发现本社区中有涉嫌抄袭的内容，欢迎发送邮件进行举报，并提供相关证据，一经查实，本社区将立刻删除涉嫌侵权内容，举报邮箱：
cloudbbs@huaweicloud.com
评论（0）