k8s實戰--edusoho平台建立

k8s實戰--edusoho平台建立

1. 基本資訊說明

   使用kubeadm方式安裝kubernetes

   Kubernetes叢集添加／删除Node

   Kubernetes Dashboard1.8.3部署

   k8s原生的叢集監控方案（Heapster+InfluxDB+Grafana)

2. 項目位址

   k8s-edusoho平台建立

3. 鏡像下載下傳

   如上面的項目位址無法使用，請使用下面連結下載下傳相應鏡像

   docker pull wutengfei/lnmp-nginx （建構LNMP平台鏡像--nginx，nginx版本：nginx/1.13.0）
   docker pull wutengfei/lnmp-php （建構LNMP平台基礎鏡像php，php的版本：PHP 7.1.5）
   docker pull wutengfei/mysql （建構LNMP平台的基礎鏡像--mysql，mysql版本是：mysql:5.6）           

4. 項目檔案結構和YAML檔案

   （1）項目檔案結構

   # pwd
   /data
   # tree -L 3
   .
   ├── mysql
   │   ├── conf
   │   │   └── my.cnf
   │   └── data
   ├── nginx
   │   ├── conf
   │   │   └── nginx.conf
   │   ├── edusoho
   │   │   ├── api
   │   │   ├── app
   │   │   ├── bootstrap
   │   │   ├── plugins
   │   │   ├── src
   │   │   ├── vendor
   │   │   ├── vendor_user
   │   │   └── web
   │   └── log
   │       └── error.log
   ├── php
   │   ├── log
   │   │   └── php-fpm.log
   │   ├── php-fpm.conf
   │   ├── php.ini
   │   └── www.conf           

（2）Pod的yaml檔案

apiVersion: v1
kind: Pod
metadata:
  name: lamp-edusoho
  labels:
    app: lamp-edusoho
restartPolicy: Always
spec:
  containers:
  - name: nginx
    abels:
      app: lamp-nginx
    image: dockerhub.datagrand.com/global/nginx:v1
    ports:
    - containerPort: 80
    volumeMounts:
      - name: datadir
        mountPath: "/var/log/nginx/error.log"
        subPath: ./nginx/log/error.log
      - name: datadir
        mountPath: "/etc/nginx/nginx.conf"
        subPath: ./nginx/conf/nginx.conf
      - name: datadir
        mountPath: "/usr/share/nginx/html"
        subPath: ./nginx/edusoho
  - name: php
    image: dockerhub.datagrand.com/global/php:v1
    ports:
    - containerPort: 9000
    volumeMounts:
      - mountPath: /usr/local/php/etc/php-fpm.conf
        name: datadir
        subPath: ./php/php-fpm.conf
      - mountPath: /usr/local/php/etc/php-fpm.d/www.conf
        name: datadir
        subPath: ./php/www.conf
      - mountPath: /usr/local/php/etc/php.ini
        name: datadir
        subPath: ./php/php.ini
      - mountPath: /usr/local/php/var/log/php-fpm.log
        name: datadir
        subPath: ./php/log/php-fpm.log
      - mountPath: /usr/share/nginx/html
        name: datadir
        subPath: ./nginx/edusoho
  - name: mysql
    image: dockerhub.datagrand.com/global/mysql:5.6
    ports:
    - containerPort: 3306
    env:
      - name: MYSQL_ROOT_PASSWORD
        value: "123456"
      - name: MYSQL_DATABASE
        value: "edusoho"
      - name: MYSQL_USER
        value: "edusoho"
      - name: MYSQL_PASSWORD
        value: "edusoho"
    args: ['--character-set-server=utf8']
    volumeMounts:
      - name: datadir
        mountPath: "/var/lib/mysql"
        subPath: ./mysql/data
      - name: datadir
        mountPath: "/etc/my.cnf"
        subPath: ./mysql/conf/my.cnf
  volumes:
  - name: datadir
    persistentVolumeClaim:
      claimName: nfs-pvc           

（3）PV的yaml檔案

apiVersion: v1
kind: PersistentVolume
metadata:
  name: nfs-pv
spec:
  capacity:
    storage: 4Gi
  accessModes:
    - ReadWriteMany
  nfs:
    server: 192.168.246.168  ##NFS伺服器的ip位址
    path: "/data"  ##NFS伺服器上的共享目錄
           

（4）PVC的yaml檔案

apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: nfs-pvc
spec:
  accessModes:
    - ReadWriteMany
  storageClassName: ""
  resources:
    requests:
      storage: 3Gi           

apiVersion: v1
kind: Service
metadata:
  name: edusoho
  labels:
    app: edusoho
spec:
  type: NodePort 
  ports:
  - port: 80
    nodePort: 32756
  selector:
    app: lamp-edusoho           

檢視Pod
kubectl get po -o wide
檢視Service
kubectl get svc
進入容器内部某個應用，如這裡的nginx
kubectl exec -it lamp-edusoho -c nginx /bin/bash           

http://192.168.246.168:32756/install/start-install.php
說明：這裡的192.168.246.168是kubernetes的node節點IP，32756是Service中定義的nodePort。