标签：name magedu nginx wordpress mysql jenkins k8s

一 kubernetes基于StatefulSet运行MySQL一主多从

我这里演示一主一从

1.1 镜像准备

docker pull registry.cn-hangzhou.aliyuncs.com/hxpdocker/xtrabackup:1.0
docker tag registry.cn-hangzhou.aliyuncs.com/hxpdocker/xtrabackup:1.0 harbor.magedu.com/magedu/xtrabackup:1.0

docker push harbor.magedu.com/magedu/xtrabackup:1.0

 docker pull  mysql:5.7
docker tag mysql:5.7  harbor.magedu.com/magedu/mysql:5.7.36
docker push harbor.magedu.com/magedu/mysql:5.7.36

1.2 创建pv

首先在nfs服务器上面创建对应目录
/data/k8sdata/magedu/mysql-datadir-1
/data/k8sdata/magedu/mysql-datadir-2
/data/k8sdata/magedu/mysql-datadir-3

[root@k8s-master1 pv]# cat 3mysql-persistentvolume.yaml 
---
apiVersion: v1
kind: PersistentVolume
metadata:
  name: mysql-datadir-1
  namespace: magedu
spec:
  capacity:
    storage: 50Gi
  accessModes:
    - ReadWriteOnce
  nfs:
    path: /data/k8sdata/magedu/mysql-datadir-1 
    server: 172.31.7.121
---
apiVersion: v1
kind: PersistentVolume
metadata:
  name: mysql-datadir-2
  namespace: magedu
spec:
  capacity:
    storage: 50Gi
  accessModes:
    - ReadWriteOnce
  nfs:
    path: /data/k8sdata/magedu/mysql-datadir-2
    server: 172.31.7.121
---
apiVersion: v1
kind: PersistentVolume
metadata:
  name: mysql-datadir-3
  namespace: magedu
spec:
  capacity:
    storage: 50Gi
  accessModes:
    - ReadWriteOnce
  nfs:
    path: /data/k8sdata/magedu/mysql-datadir-3
    server: 172.31.7.121

查看pv

1.3 创建service

[root@k8s-master1 mysql]# cat mysql-services.yaml 
# Headless service for stable DNS entries of StatefulSet members.
apiVersion: v1
kind: Service
metadata:
  namespace: magedu
  name: mysql
  labels:
    app: mysql
spec:
  ports:
  - name: mysql
    port: 3306
  clusterIP: None
  selector:
    app: mysql
---
# Client service for connecting to any MySQL instance for reads.
# For writes, you must instead connect to the master: mysql-0.mysql.
apiVersion: v1
kind: Service
metadata:
  name: mysql-read
  namespace: magedu
  labels:
    app: mysql
spec:
  ports:
  - name: mysql
    port: 3306
  selector:
    app: mysql

查看service

1.4 创建configmap

主从的配置文件

[root@k8s-master1 mysql]# cat mysql-configmap.yaml 
apiVersion: v1
kind: ConfigMap
metadata:
  name: mysql
  namespace: magedu
  labels:
    app: mysql
data:
  master.cnf: |
    # Apply this config only on the master.
    [mysqld]
    log-bin
    log_bin_trust_function_creators=1
    lower_case_table_names=1
  slave.cnf: |
    # Apply this config only on slaves.
    [mysqld]
    super-read-only
    log_bin_trust_function_creators=1

1.5运行mysql pod

创建的pod如果一直处于pending，是因为node节点资源不足
下面的yaml文件，主要是实现mysql主从过程，还有创建pvc
第一步，初始mysql
第二步，如果是从库，则使用xtrabackup克隆数据库
第三步和第四步，就是运行mysql和xtrabackup容器。

[root@k8s-master1 mysql]# cat  mysql-statefulset.yaml
apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: mysql
  namespace: magedu
spec:
  selector:
    matchLabels:
      app: mysql
  serviceName: mysql
  replicas: 2
  template:
    metadata:
      labels:
        app: mysql
    spec:
      initContainers:
      - name: init-mysql
        image: harbor.magedu.com/magedu/mysql:5.7.36 
        command:
        - bash
        - "-c"
        - |
          set -ex
          # Generate mysql server-id from pod ordinal index.
          [[ `hostname` =~ -([0-9]+)$ ]] || exit 1
          ordinal=${BASH_REMATCH[1]}
          echo [mysqld] > /mnt/conf.d/server-id.cnf
          # Add an offset to avoid reserved server-id=0 value.
          echo server-id=$((100 + $ordinal)) >> /mnt/conf.d/server-id.cnf
          # Copy appropriate conf.d files from config-map to emptyDir.
          if [[ $ordinal -eq 0 ]]; then
            cp /mnt/config-map/master.cnf /mnt/conf.d/
          else
            cp /mnt/config-map/slave.cnf /mnt/conf.d/
          fi
        volumeMounts:
        - name: conf
          mountPath: /mnt/conf.d
        - name: config-map
          mountPath: /mnt/config-map
      - name: clone-mysql
        image: harbor.magedu.com/magedu/xtrabackup:1.0 
        command:
        - bash
        - "-c"
        - |
          set -ex
          # Skip the clone if data already exists.
          [[ -d /var/lib/mysql/mysql ]] && exit 0
          # Skip the clone on master (ordinal index 0).
          [[ `hostname` =~ -([0-9]+)$ ]] || exit 1
          ordinal=${BASH_REMATCH[1]}
          [[ $ordinal -eq 0 ]] && exit 0
          # Clone data from previous peer.
          ncat --recv-only mysql-$(($ordinal-1)).mysql 3307 | xbstream -x -C /var/lib/mysql
          # Prepare the backup.
          xtrabackup --prepare --target-dir=/var/lib/mysql
        volumeMounts:
        - name: data
          mountPath: /var/lib/mysql
          subPath: mysql
        - name: conf
          mountPath: /etc/mysql/conf.d
      containers:
      - name: mysql
        image: harbor.magedu.com/magedu/mysql:5.7.36 
        env:
        - name: MYSQL_ALLOW_EMPTY_PASSWORD
          value: "1"
        ports:
        - name: mysql
          containerPort: 3306
        volumeMounts:
        - name: data
          mountPath: /var/lib/mysql
          subPath: mysql
        - name: conf
          mountPath: /etc/mysql/conf.d
        resources:
          requests:
            cpu: 500m
            memory: 1Gi
        livenessProbe:
          exec:
            command: ["mysqladmin", "ping"]
          initialDelaySeconds: 30
          periodSeconds: 10
          timeoutSeconds: 5
        readinessProbe:
          exec:
            # Check we can execute queries over TCP (skip-comworking is off).
            command: ["mysql", "-h", "127.0.0.1", "-e", "SELECT 1"]
          initialDelaySeconds: 5
          periodSeconds: 2
          timeoutSeconds: 1
      - name: xtrabackup
        image: harbor.magedu.com/magedu/xtrabackup:1.0 
        ports:
        - name: xtrabackup
          containerPort: 3307
        command:
        - bash
        - "-c"
        - |
          set -ex
          cd /var/lib/mysql
          # Determine binlog position of cloned data, if any.
          if [[ -f xtrabackup_slave_info ]]; then
            # XtraBackup already generated a partial "CHANGE MASTER TO" query
            # because we're cloning from an existing slave.
            mv xtrabackup_slave_info change_master_to.sql.in
            # Ignore xtrabackup_binlog_info in this case (it's useless).
            rm -f xtrabackup_binlog_info
          elif [[ -f xtrabackup_binlog_info ]]; then
            # We're cloning directly from master. Parse binlog position.
            [[ `cat xtrabackup_binlog_info` =~ ^(.*?)[[:space:]]+(.*?)$ ]] || exit 1
            rm xtrabackup_binlog_info
            echo "CHANGE MASTER TO MASTER_LOG_FILE='${BASH_REMATCH[1]}',\
                  MASTER_LOG_POS=${BASH_REMATCH[2]}" > change_master_to.sql.in
          fi
          # Check if we need to complete a clone by starting replication.
          if [[ -f change_master_to.sql.in ]]; then
            echo "Waiting for mysqld to be ready (accepting connections)"
            until mysql -h 127.0.0.1 -e "SELECT 1"; do sleep 1; done
            echo "Initializing replication from clone position"
            # In case of container restart, attempt this at-most-once.
            mv change_master_to.sql.in change_master_to.sql.orig
            mysql -h 127.0.0.1 <<EOF
          $(<change_master_to.sql.orig),
            MASTER_HOST='mysql-0.mysql',
            MASTER_USER='root',
            MASTER_PASSWORD='',
            MASTER_CONNECT_RETRY=10;
          START SLAVE;
          EOF
          fi
          # Start a server to send backups when requested by peers.
          exec ncat --listen --keep-open --send-only --max-conns=1 3307 -c \
            "xtrabackup --backup --slave-info --stream=xbstream --host=127.0.0.1 --user=root"
        volumeMounts:
        - name: data
          mountPath: /var/lib/mysql
          subPath: mysql
        - name: conf
          mountPath: /etc/mysql/conf.d
        resources:
          requests:
            cpu: 100m
            memory: 100Mi
      volumes:
      - name: conf
        emptyDir: {}
      - name: config-map
        configMap:
          name: mysql
  volumeClaimTemplates:
  - metadata:
      name: data
    spec:
      accessModes: ["ReadWriteOnce"]
      resources:
        requests:
          storage: 10Gi

查看pvc

查看pod

1.6 验证主从

在主数据库创建一个新的库，去从库查看是否同步。
kubectl exec -it mysql-0 sh -n magedu

去从节点查看，是否同步

kubectl exec -it mysql-1 sh -n magedu #进入从节点
mysql #登录myql

登录从节点，查看主从同步的状态。

二单Pod多容器实现LNMP并使用MySQL作为SQL服务器运行wordpress实例

2.1 准备nginx基础镜像

nginx和php在同一个pod

dockfile内容

#Nginx Base Image
FROM harbor.magedu.com/baseimages/magedu-centos-base:7.9.2009 

MAINTAINER  zhangshijie@magedu.net

RUN yum install -y vim wget tree  lrzsz gcc gcc-c++ automake pcre pcre-devel zlib zlib-devel openssl openssl-devel iproute net-tools iotop
ADD nginx-1.20.2.tar.gz /usr/local/src/
RUN cd /usr/local/src/nginx-1.20.2 && ./configure --prefix=/apps/nginx  && make && make install && ln -sv  /apps/nginx/sbin/nginx /usr/sbin/nginx  &&rm -rf /usr/local/src/nginx-1.20.2.tar.gz

打包

#!/bin/bash
docker build -t harbor.magedu.com/pub-images/nginx-base-wordpress:v1.20.2  .
sleep 1
docker push  harbor.magedu.com/pub-images/nginx-base-wordpress:v1.20.2

2.2 准备nginx-wordpress镜像

dockfile内容

FROM harbor.magedu.com/pub-images/nginx-base-wordpress:v1.20.2 
RUN useradd nginx -u 2050 
ADD nginx.conf /apps/nginx/conf/nginx.conf
ADD run_nginx.sh /apps/nginx/sbin/run_nginx.sh
RUN mkdir -pv /home/nginx/wordpress
RUN chown nginx.nginx /home/nginx/wordpress/ -R

EXPOSE 80 443

CMD ["/apps/nginx/sbin/run_nginx.sh"]

打包

#!/bin/bash
TAG=$1
docker build -t harbor.magedu.com/magedu/wordpress-nginx:${TAG} .
echo "镜像制作完成，即将上传至Harbor服务器"
sleep 1
docker push  harbor.magedu.com/magedu/wordpress-nginx:${TAG}
echo "镜像上传完成"

启动脚本

[root@k8s-master1 nginx]# cat run_nginx.sh 
#!/bin/bash
#echo "nameserver 10.20.254.254" > /etc/resolv.conf
#chown nginx.nginx /home/nginx/wordpress/ -R
/apps/nginx/sbin/nginx
tail -f /etc/hosts

2.3 php镜像

dockfile tomcat里的用户一定要和nginx的用户id一样

cat Dockfile
FROM harbor.magedu.com/baseimages/magedu-centos-base:7.9.2009 
MAINTAINER  zhangshijie@magedu.net

RUN yum install -y  https://mirrors.tuna.tsinghua.edu.cn/remi/enterprise/remi-release-7.rpm && yum install  php56-php-fpm php56-php-mysql -y 
RUN useradd nginx -u 2050
ADD www.conf /opt/remi/php56/root/etc/php-fpm.d/www.conf
#RUN useradd nginx -u 2019
ADD run_php.sh /usr/local/bin/run_php.sh
EXPOSE 9000

CMD ["/usr/local/bin/run_php.sh"]

打包上传

[root@k8s-master1 php]# cat build-command.sh 
#!/bin/bash
TAG=$1
docker build -t harbor.magedu.com/magedu/wordpress-php-5.6:${TAG} .
echo "镜像制作完成，即将上传至Harbor服务器"
sleep 1
docker push harbor.magedu.com/magedu/wordpress-php-5.6:${TAG}
echo "镜像上传完成"

2.4 运行wordpress

kind: Deployment
#apiVersion: extensions/v1beta1
apiVersion: apps/v1
metadata:
  labels:
    app: wordpress-app
  name: wordpress-app-deployment
  namespace: magedu
spec:
  replicas: 1
  selector:
    matchLabels:
      app: wordpress-app
  template:
    metadata:
      labels:
        app: wordpress-app
    spec:
      containers:
      - name: wordpress-app-nginx
        image: harbor.magedu.com/magedu/wordpress-nginx:v1 
        imagePullPolicy: Always
        ports:
        - containerPort: 80
          protocol: TCP
          name: http
        - containerPort: 443
          protocol: TCP
          name: https
        volumeMounts:
        - name: wordpress
          mountPath: /home/nginx/wordpress
          readOnly: false

      - name: wordpress-app-php
        image: harbor.magedu.com/magedu/wordpress-php-5.6:v1
        #image: harbor.magedu.com/magedu/php:5.6.40-fpm 
        #imagePullPolicy: IfNotPresent
        imagePullPolicy: Always
        ports:
        - containerPort: 9000
          protocol: TCP
          name: http
        volumeMounts:
        - name: wordpress
          mountPath: /home/nginx/wordpress
          readOnly: false

      volumes:
      - name: wordpress
        nfs:
          server: 172.31.7.121
          path: /data/k8sdata/magedu/wordpress 


---
kind: Service
apiVersion: v1
metadata:
  labels:
    app: wordpress-app
  name: wordpress-app-spec
  namespace: magedu
spec:
  type: NodePort
  ports:
  - name: http
    port: 80
    protocol: TCP
    targetPort: 80
    nodePort: 30031
  - name: https
    port: 443
    protocol: TCP
    targetPort: 443
    nodePort: 30033
  selector:
    app: wordpress-app

2.5 下载wordpress代码

https://cn.wordpress.org/download/releases/
下载好的代码解压放到挂载的目录，就是nfs上的/data/k8sdata/magedu/wordpress 这个目录
解压完之后，还需要更改权限，chown 2055.2055 wordpress 这个数值就是nginx用户的uid和gid
分别进入到nginx和php查看nginx的id

 kubectl exec -it wordpress-app-deployment-6bbd8f996-bj5rt /bin/bash -n magedu
[root@wordpress-app-deployment-6bbd8f996-bj5rt /]# id nginx
uid=2050(nginx) gid=2050(nginx) groups=2050(nginx)

 kubectl exec -it wordpress-app-deployment-6bbd8f996-bj5rt -c wordpress-app-php /bin/bash -n magedu   #进入php
  [root@wordpress-app-deployment-6bbd8f996-bj5rt /]# id nginx
uid=2050(nginx) gid=2050(nginx) groups=2050(nginx)

然后访问浏览器 172.31.7.122:30011

然后进入mysql-0，创建一个数据库，wordpress

 kubectl exec -it mysql-0 bash -n magedu
mysql #登录
mysql> CREATE DATABASE wordpress;
Query OK, 1 row affected (0.26 sec)

mysql> GRANT ALL PRIVILEGES ON wordpress.* TO "wordpress"@"%"  IDENTIFIED BY "wordpress123";
Query OK, 0 rows affected, 1 warning (0.75 sec)

mysql-0.mysql.magedu.svc.magedu.local # 数据库地址

点击提交，我这里提示wp-config.php这个文件无法自动写入，需要手动创建写入

三 kubernetes运行Jenkins

3.1 准备镜像jenkins

root@k8s-master1 jenkins]# cat Dockerfile 
#Jenkins Version 2.190.1
FROM harbor.magedu.com/pub-images/jdk-base:v8.212

MAINTAINER zhangshijie zhangshijie@magedu.net

ADD jenkins-2.319.2.war /apps/jenkins/jenkins.war
ADD run_jenkins.sh /usr/bin/


EXPOSE 8080 

CMD ["/usr/bin/run_jenkins.sh"]

打包上传

[root@k8s-master1 jenkins]# cat build-command.sh 
#!/bin/bash
docker build -t  harbor.magedu.com/magedu/jenkins:v2.319.2 .
echo "镜像制作完成，即将上传至Harbor服务器"
sleep 1
docker push harbor.magedu.com/magedu/jenkins:v2.319.2
echo "镜像上传完成"

3.2 创建pv，pvc

cat pv.yaml
[root@k8s-master1 jenkins]# cat pv/jenkins-persistentvolume.yaml 
---
apiVersion: v1
kind: PersistentVolume
metadata:
  name: jenkins-datadir-pv
  namespace: magedu
spec:
  capacity:
    storage: 100Gi
  accessModes:
    - ReadWriteOnce
  nfs:
    server: 172.31.7.121
    path: /data/k8sdata/magedu/jenkins-data 

---
apiVersion: v1
kind: PersistentVolume
metadata:
  name: jenkins-root-datadir-pv
  namespace: magedu
spec:
  capacity:
    storage: 100Gi
  accessModes:
    - ReadWriteOnce
  nfs:
    server: 172.31.7.121
    path: /data/k8sdata/magedu/jenkins-root-data

cat pvc.yaml
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: jenkins-datadir-pvc
  namespace: magedu
spec:
  volumeName: jenkins-datadir-pv
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 100Gi

---
apiVersion: v1
kind: PersistentVolumeCl0aim
metadata:
  name: jenkins-root-data-pvc
  namespace: magedu
spec:
  volumeName: jenkins-root-datadir-pv
  accessModes:
    - ReadWriteOnce
  resources:
    requests:
      storage: 100Gi

3.3 创建jenkins pod

kind: Deployment
#apiVersion: extensions/v1beta1
apiVersion: apps/v1
metadata:
  labels:
    app: magedu-jenkins
  name: magedu-jenkins-deployment
  namespace: magedu
spec:
  replicas: 1
  selector:
    matchLabels:
      app: magedu-jenkins
  template:
    metadata:
      labels:
        app: magedu-jenkins
    spec:
      containers:
      - name: magedu-jenkins-container
        image: harbor.magedu.com/magedu/jenkins:v2.319.2 
        #imagePullPolicy: IfNotPresent
        imagePullPolicy: Always
        ports:
        - containerPort: 8080
          protocol: TCP
          name: http
        volumeMounts:
        - mountPath: "/apps/jenkins/jenkins-data/"
          name: jenkins-datadir-magedu
        - mountPath: "/root/.jenkins"
          name: jenkins-root-datadir
      volumes:
        - name: jenkins-datadir-magedu
          persistentVolumeClaim:
            claimName: jenkins-datadir-pvc
        - name: jenkins-root-datadir
          persistentVolumeClaim:
            claimName: jenkins-root-data-pvc

---
kind: Service
apiVersion: v1
metadata:
  labels:
    app: magedu-jenkins
  name: magedu-jenkins-service
  namespace: magedu
spec:
  type: NodePort
  ports:
  - name: http
    port: 80
    protocol: TCP
    targetPort: 8080
    nodePort: 38080
  selector:
    app: magedu-jenkins

查看pod和svc，在浏览器里访问

标签：name,magedu,nginx,wordpress,mysql,jenkins,k8s
From： https://www.cnblogs.com/huningfei/p/17105160.html

9 k8s内运行mysql,jenkins

一 kubernetes基于StatefulSet运行MySQL一主多从

1.1 镜像准备

1.2 创建pv

1.3 创建service

1.4 创建configmap

1.5运行mysql pod

1.6 验证主从

二单Pod多容器实现LNMP并使用MySQL作为SQL服务器运行wordpress实例

2.1 准备nginx基础镜像

2.2 准备nginx-wordpress镜像

2.3 php镜像

2.4 运行wordpress

2.5 下载wordpress代码

三 kubernetes运行Jenkins

3.1 准备镜像jenkins

3.2 创建pv，pvc

3.3 创建jenkins pod

相关文章

赞助商

阅读排行

9 k8s内运行mysql,jenkins

一 kubernetes基于StatefulSet运行MySQL一主多从

1.1 镜像准备

1.2 创建pv

1.3 创建service

1.4 创建configmap

1.5运行mysql pod

1.6 验证主从

二 单Pod多容器实现LNMP并使用MySQL作为SQL服务器运行wordpress实例

2.1 准备nginx基础镜像

2.2 准备nginx-wordpress镜像

2.3 php镜像

2.4 运行wordpress

2.5 下载wordpress代码

三 kubernetes运行Jenkins

3.1 准备镜像jenkins

3.2 创建pv，pvc

3.3 创建jenkins pod

相关文章

赞助商

阅读排行

二单Pod多容器实现LNMP并使用MySQL作为SQL服务器运行wordpress实例