K8s中配置lnmp环境

一、配置用于存储的NFS服务

1.1服务端配置 nfs

#yum安装
[root@k8smaster lnmp]# yum -y install nfs-utils
#编辑 配置文件 （确保目录存在）
[root@k8smaster lnmp]# vim /etc/exports
/data/lnmp 10.7.0.0/16(rw,no_root_squash)
#启动服务
[root@k8smaster lnmp]# systemctl start nfs
[root@k8smaster lnmp]# systemctl status  nfs
● nfs-server.service - NFS server and services
   Loaded: loaded (/usr/lib/systemd/system/nfs-server.service; disabled; vendor preset: disabled)
  Drop-In: /run/systemd/generator/nfs-server.service.d
           └─order-with-mounts.conf
   Active: active (exited) since Sat 2021-09-11 17:32:16 HKT; 1 weeks 0 days ago
 Main PID: 21698 (code=exited, status=0/SUCCESS)
    Tasks: 0
   Memory: 0B
   CGroup: /system.slice/nfs-server.service
#showmount确认
[root@k8smaster lnmp]# showmount -e
Export list for k8smaster:
/data/lnmp 10.7.0.0/16

1.2客户端挂载服务

#安装nfs客户端 
[root@k8snode ~]# yum -y install nfs-utils.x86_64
#showmount -e查看
[root@k8snode ~]# showmount -e 10.7.48.223
Export list for 10.7.48.223:
/data/lnmp 10.7.0.0/16
#创建挂载点挂载
[root@k8snode data]# mkdir /data
[root@k8snode data]# mount -t nfs 10.7.48.223/data/lnmp /data

二 、配置LNMP环境

2.1mysql配置清单

配置前先创建需要的命名空间

[root@k8smaster lnmp]# kubectl create ns  lnmp

mysql清单配置如下

apiVersion: apps/v1
kind: Deployment
metadata:
  name: mysql
spec:
  selector:
    matchLabels:
      app: mysql
  replicas: 1
  template:
    metadata:
      labels:
        app: mysql
    spec:
      containers:
      - image: mysql:5.7
        imagePullPolicy: IfNotPresent
        name: mysql
        env:
        - name: MYSQL_ROOT_PASSWORD
          valueFrom:
            secretKeyRef:
              name: mysql-pass
              key: password
        ports:
        - containerPort: 3306
          name: mysql
        volumeMounts:
        - name: lnmp-mysql
          mountPath: /var/lib/mysql
      volumes:
      - name: lnmp-mysql
        nfs:
         server: 10.7.48.223  #nfs server服务器IP
         path: "/data/lnmp/mysql"
---
apiVersion: v1
kind: Service
metadata:
  name: mysql
  labels:
    app: mysql
spec:
  ports:
  - name: mysql
    port: 3306
    targetPort: 3306
  selector:
    app: mysql

这里面mysql 密码是通过环境 变量的方式导入的密码配置参考下面方法

kubectl create secret generic mysql-pass --from-literal=password=123456 -n lnmp

#启动
[root@k8smaster lnmp]# kubectl apply -f mysql.yaml -n lnmp
deployment.apps/mysql created
service/mysql unchanged
#查看pod状态
[root@k8smaster lnmp]# kubectl get po  -n lnmp
NAME                        READY   STATUS    RESTARTS   AGE
mysql-6cc8488986-2wf62      1/1     Running   0          13m
#查看svc地址并确认端口连通性
[root@k8smaster lnmp]# kubectl get svc  -n lnmp
NAME        TYPE        CLUSTER-IP      EXTERNAL-IP   PORT(S)        AGE
mysql       ClusterIP   10.97.108.119   <none>        3306/TCP       2d20h
[root@k8smaster lnmp]# telnet  10.97.108.119  3306
Trying 10.97.108.119...
Connected to 10.97.108.119.
Escape character is '^]'
#端口可以正常访问mysql的配置就是正常的

2.2 nginx+php配置清单

清单文件如下

---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: nginx-php
spec:
  selector:
    matchLabels:
      app: nginx-php
  replicas: 1
  template:
    metadata:
      labels:
        app: nginx-php
    spec:
      containers:
      - name: php
        image: registry.cn-shenzhen.aliyuncs.com/user-sum/php
        imagePullPolicy: IfNotPresent
        ports:
        - containerPort: 9000
        volumeMounts:
        - name: nginx-data
          mountPath: /var/www/html/
 
      - name: nginx
        image: registry.cn-shenzhen.aliyuncs.com/user-sum/alpine:nginx1.18.0
        imagePullPolicy: IfNotPresent
        ports:
        - containerPort: 80
        volumeMounts:
        - name: nginx-data
          mountPath: /usr/share/nginx/html
        - name: nginx-conf
          mountPath: /etc/nginx/conf.d/
 
      volumes:
      - name: nginx-data
        nfs:
         server: 10.7.48.223  #nfs server服务器IP
         path: "/data/lnmp/app"
      - name: nginx-conf
        configMap:
         name: ngin-conf
         items:
         - key: default.conf
           path: add.conf
 
---
apiVersion: v1
kind: Service
metadata:
  name: nginx-php
spec:
  type: NodePort
  ports:
  - name: nginx
    port: 80
    protocol: TCP
    targetPort: 80
    nodePort: 30010
  selector:
    app: nginx-php

nginx服务配置文件

server {
    listen       80;
    server_name  localhost;
    location / {
        root   /usr/share/nginx/html;
        index  index.html index.htm;
    }
    error_page   500 502 503 504  /50x.html;
    location = /50x.html {
        root   /usr/share/nginx/html;
    }
    location ~ \.php$ {
        fastcgi_pass   127.0.0.1:9000;
        fastcgi_index  index.php;
        fastcgi_param  SCRIPT_FILENAME  /var/www/html/$fastcgi_script_name;
        include        fastcgi_params;
    }
}

#创建configmap
[root@k8smaster lnmp]# kubectl create cm ngin-conf --from-file=default.conf -n lnmp
#启动
[root@k8smaster lnmp]# kubectl apply -f nginx-php.yaml -n lnmp

2.3测试

测试 php连通性

#创建测试文件测试
[root@k8snode app]# cat test.php 
<?php phpinfo(); ?>

测试 mysql连通性

[root@k8snode app]# cat mysql.php 
<h1>Test php-mysql </h1>
<?php
mysqli_connect('10.97.108.119','root','123456') or die('failed');
echo 'success';
phpinfo();
?>

至此配置完成后面就可以吧自己的项目放到nginx工作目录愉快的玩耍了(๑•̀ㅁ•́ฅ)