mysql docker dual-machine hot standby read-write separation installation

1. configure mysql cnf

   // 创建映射数据目录
   mkdir -pv /mysql/data 
   // 建立映射配置目录 
   mkdir -pv /mysql/101
   mkdir -pv /mysql/102
   // 编辑mysql配置目录
   vi /mysql/101/101.cnf
   
   [mysqld]
   log-bin=master-bin
   server-id=101
   
   vi /mysql/102/102.cnf
   
   [mysqld]
   log-bin=master-bin
   server-id=102
   
   
   
   

2. install/start mysql

   // 101 root 123456
   docker run -d --name mysqlsrv101 -v /mysql/data/mysql101:/var/lib/mysql -v /mysql/101:/etc/mysql/conf.d -e MYSQL_ROOT_PASSWORD=123456 -p 3306:3306 reg.sierac.net:90/sierac-images/sierac-mysql:5.6.36
   // 102 root 123456
   docker run -d --name mysqlsrv102 -v /mysql/data/mysql102:/var/lib/mysql -v /mysql/102:/etc/mysql/conf.d -e MYSQL_ROOT_PASSWORD=123456 -p 3307:3306 reg.sierac.net:90/sierac-images/sierac-mysql:5.6.36
   

3. main library create user

   // 设置语法兼容
   SET sql_mode=(SELECT REPLACE(@@sql_mode,'ONLY_FULL_GROUP_BY',''));
   // 添加备库用户
   GRANT REPLICATION SLAVE ON *.* to 'backup'@'%' identified by '123456';
   

4. Configure from library

   // 设置语法兼容
   SET sql_mode=(SELECT REPLACE(@@sql_mode,'ONLY_FULL_GROUP_BY',''));
   // 设置与主服务器相关的配置参数
   // master_host:主容器ip,eg:172.17.0.2
   // master_log_file:在主库中通过show master status;查看得到
   // master_log_pos:在主库中通过show master status;查看得到
   change master to master_host='172.17.0.1',master_user='backup',master_password='123456',master_log_file='master-bin.000002',master_log_pos=320;
   

5. Start the slave library and verify whether it takes effect

   start slave;
   // Waiting for master to send event 就是成功了 
   // Connecting to master 多半是连接不通
   show slave status;
   

6. Read-write separation middleware mycat

   // 下载mycat镜像
   docker push registry.sieracpack.com:90/sierac-images/mycat:1.6
   // 启动容器
   docker run -d --name=mycat --memory="1024m" --restart=unless-stopped -p 8066:8066 -p 9066:9066 -e TZ="Asia/Shanghai" registry.sieracpack.com:90/sierac-images/mycat:1.6
   // 配置中间件用户和规则
   // server.xml添加
   
   <user name="root">
       <property name="password">123456</property>
       <property name="schemas">TESTDB</property>
   </user>
   // schema.xml替换如下
   // 参数详见http://songwie.com/attached/file/mycat_1.5.2.pdf
   
   <?xml version="1.0"?>
   <!DOCTYPE mycat:schema SYSTEM "schema.dtd">
   <mycat:schema xmlns:mycat="http://io.mycat/">
   
   <!-- 数据库配置，与server.xml中的数据库对应 -->
   <schema name="TESTDB" checkSQLschema="true" sqlMaxLimit="100">
       <table name="product" dataNode="dn1" ruleRequired="false"/>
   </schema>
   
   <!-- 分片配置 -->
   <dataNode name="dn1" dataHost="dbhost" database="test" />
   
   
   <!-- 物理数据库配置 -->
   <dataHost name="dbhost" maxCon="1000" minCon="10" balance="3"  writeType="0" dbType="mysql" dbDriver="native">
       <heartbeat>select user();</heartbeat>
       <writeHost host="hostM1" url="172.17.0.3:3306" user="root" password="123456">
       <readHost host="hostS1" url="172.17.0.4:3306" user="root" password="123456">
       </readHost>
       </writeHost>
   </dataHost>
   
   </mycat:schema>
   
   

7. test mycat

   // 用navicat链接逻辑mycat数据库
   // 查询见下图
   select * from product;
   // 插入见下图
   INSERT INTO `TESTDB`.`product` (
       `pro_code`,
       `ck`,
       `kw`,
       `ck_status`,
       `get_confirm`
   )
   VALUES
   (
   	'3232424242421',
   	'2号仓库',
   	'2号库位',
   	'待出库',
   	'收获已经确认'
   );