Docker mysql 主从

一、独立容器部署mysql主从　

# 主从 my.cnf加上

[mysqld]

server-id = XXX

log-bin = mysql-bin

log-bin-index = log-bin.index

　　（1）master

docker run -d \

--name mysql_master \

-p 3310:3306 \

-v /data/conf/master-slave/master.cnf:/etc/mysql/my.cnf \

-v /data/conf/master-slave/localtime:/etc/localtime  \

-v /data/storage/cluster_data/master_data:/var/lib/mysql \

-e MYSQL_ROOT_PASSWORD=Password4Root \

mysql

　　（2）slave　

docker run -d \

--name mysql_slave \

-p 3311:3306 \

-v /data/conf/master-slave/slave.cnf:/etc/mysql/my.cnf \

-v /data/conf/master-slave/localtime:/etc/localtime \

-v /data/storage/cluster_data/slave_data:/var/lib/mysql \

-e MYSQL_ROOT_PASSWORD=Password4Root \

--link mysql_master:master \

mysql

　　（3）查看　

docker ps

CONTAINER ID        IMAGE                   COMMAND                  CREATED              STATUS              PORTS                            NAMES

dc5f46aa135b        mysql                   "docker-entrypoint.s…"   About a minute ago   Up About a minute   0.0.0.0:3311->3306/tcp           mysql_slave

be3e1af663cd        mysql                   "docker-entrypoint.s…"   About a minute ago   Up About a minute   0.0.0.0:3310->3306/tcp           mysql_master

　　（4）主库Replication设置

# 登入主库

docker exec -it mysql_master mysql -uroot -pPassword4Root

mysql> grant all privileges on *.* to 'repl'@'%' identified by 'repl_password';

Query OK, 0 rows affected, 1 warning (0.01 sec)

mysql> show master status\G;

*************************** 1. row ***************************

             File: mysql-bin.000003

         Position: 434

     Binlog_Do_DB:

 Binlog_Ignore_DB:

Executed_Gtid_Set:

1 row in set (0.00 sec)

　　（5）从库Replication设置

# 登入从库

docker exec -it mysql_slave mysql -uroot -pPassword4Root

# 设置主从

mysql> change master to

    -> master_host='master',

    -> master_user='repl',

    -> master_password='repl_password',

    -> master_log_file='mysql-bin.000003',

    -> master_log_pos=434;

# 启动slave

mysql> start slave;

# 查看状态

mysql> show slave status\G;

*************************** 1. row ***************************

               Slave_IO_State: Waiting for master to send event

                  Master_Host: master

                  Master_User: repl

                  Master_Port: 3306

                Connect_Retry: 60

              Master_Log_File: mysql-bin.000003

          Read_Master_Log_Pos: 434

               Relay_Log_File: 5925cc301b6b-relay-bin.000002

                Relay_Log_Pos: 320

        Relay_Master_Log_File: mysql-bin.000003

             Slave_IO_Running: Yes

            Slave_SQL_Running: Yes

              Replicate_Do_DB:

          Replicate_Ignore_DB:

　　（6）测试

　　主库新建数据库

　　从库查看

　　尝试重启mysql_master容器，slave状态变为connecting

　　重启完成后，状态恢复正常

二、Docker Swarm mysql主从

　　（1）创建secret文件

# echo "Password4Root" | docker secret create root_cluster_password -

w4wv4askqam5znua5032gm8vt

　　（2）使用swarm配置管理

　　master.cnf和slave.cnf要存在

# 创建主从配置文件

[root@manager master-slave]# docker config create master.cnf master.cnf

t1rjlq7djtulxzl7gppf3rrum

[root@manager master-slave]# docker config create slave.cnf slave.cnf

u229zquvbevbq50k92ylqcgqn

　　（3）创建overlay网络　　

# docker network create -d overlay mysql-cluster --subnet 10.10.2.0/24

zf4n8waxc283uprq8eppx2gzp

　　（4）创建服务　

# master

[root@manager ~]# docker service create \

> --name mysql_master \

> --replicas 1 \

> --network mysql-cluster \

> --secret root_cluster_password \

> --config src=master.cnf,target=/etc/mysql/my.cnf \

> -e MYSQL_ROOT_PASSWORD_FILE=/run/secrets/root_cluster_password \

> --mount type=volume,src=master_data,dst=/var/lib/mysql \

> --publish 3320:3306 \

> mysql

nuthmf6fdpmjmew1pzhdninmg

overall progress: 1 out of 1 tasks

1/1: running   [==================================================>]

verify: Service converged

# slave

[root@manager ~]# docker service create \

> --name mysql_slave \

> --replicas 1 \

> --network mysql-cluster \

> --secret root_cluster_password \

> --config src=slave.cnf,target=/etc/mysql/my.cnf \

> --mount type=volume,src=slave_data,dst=/var/lib/mysql \

> -e MYSQL_ROOT_PASSWORD_FILE=/run/secrets/root_cluster_password \

> --publish 3321:3306 \

> mysql

pyed0j0jlijy1upbyicuayvko

overall progress: 1 out of 1 tasks

1/1: running   [==================================================>]

verify: Service converged

[root@manager ~]# docker service ls

ID                  NAME                MODE                REPLICAS            IMAGE               PORTS

nuthmf6fdpmj        mysql_master        replicated          1/1                 mysql:latest        *:3320->3306/tcp

pyed0j0jlijy        mysql_slave         replicated          1/1                 mysql:latest        *:3321->3306/tcp

　　（5）主从配置

# 登入master所在节点的主库

mysql> grant all privileges on *.* to 'repl'@'%' identified by 'repl_password';

Query OK, 0 rows affected, 1 warning (0.00 sec)

mysql> show master status\G;

*************************** 1. row ***************************

             File: mysql-bin.000003

         Position: 434

     Binlog_Do_DB:

 Binlog_Ignore_DB:

Executed_Gtid_Set:

1 row in set (0.00 sec)

# 登入slave所在节点从库

mysql> change master to

    -> master_host='mysql_master',

    -> master_user='repl',

    -> master_password='repl_password',

    -> master_log_file='mysql-bin.000003',

    -> master_log_pos=434;

Query OK, 0 rows affected, 2 warnings (0.29 sec)

mysql> start slave;

Query OK, 0 rows affected (0.01 sec

　　查看状态

　　（6）测试验证

　　主库创建数据库

　　查看从库

　　stop 主库（在swarm集群中，关停的容器默认会自动重启）

　　重启完成后恢复正常

三、服务编排部署mysql主从

　　（1）mysql_replications.yml　　

version: "3.3"

services:

  master:

    image: mysql:latest

    networks:

      - rep_net

    ports:

      - "3330:3306"

    volumes:

      - type: volume

        source: master-data

        target: /var/lib/mysql

        volume:

          nocopy: true

    configs:

      - source: localtime

        target: /etc/localtime

      - source: master.cnf

        target: /etc/mysql/my.cnf

    deploy:

      replicas: 1

      restart_policy:

        condition: on-failure

      resources:

        limits:

          cpus: '0.8'

          memory: 500M

        reservations:

          cpus: '0.25'

          memory: 200M

    secrets:

      - root_password

    environment:

      - MYSQL_ROOT_PASSWORD_FILE=/run/secrets/root_password

  slave:

    image: mysql:latest

    networks:

      - rep_net

    ports:

      - "3331:3306"

    volumes:

      - type: volume

        source: slave-data

        target: /var/lib/mysql

        volume:

          nocopy: true

    configs:

      - source: localtime

        target: /etc/localtime

      - source: slave.cnf

        target: /etc/mysql/my.cnf

    deploy:

      replicas: 1

      restart_policy:

        condition: on-failure

      resources:

        limits:

          cpus: '0.8'

          memory: 500M

        reservations:

          cpus: '0.25'

          memory: 200M

    secrets:

      - root_password

    environment:

      - MYSQL_ROOT_PASSWORD_FILE=/run/secrets/root_password

secrets:

  root_password:

    external: true

configs:

  localtime:

    external: true

  master.cnf:

    external: true

  slave.cnf:

    external: true

volumes:

  master-data:

  slave-data:

networks:

  rep_net:

    driver: overlay

　　（2）部署服务

# docker stack deploy -c mysql_replications.yml repl

Creating network repl_rep_net

Creating service repl_master

Creating service repl_slave

　　（3）查看服务

[root@manager stack_compose]# docker service ls

ID                  NAME                MODE                REPLICAS            IMAGE

khfpkq81op7b        repl_master         replicated          1/1                 mysql:latest        *:3330->3306/tcp

u7k4enpy1eru        repl_slave          replicated          1/1                 mysql:latest        *:3331->3306/tcp

　　（4）配置主从

# master

# docker exec -it fb85153f27ac mysql -uroot -pPassword4Root

mysql> grant all privileges on *.* to 'repl'@'%' identified by 'repl_password';

Query OK, 0 rows affected, 1 warning (0.01 sec)

mysql> show master status\G;

*************************** 1. row ***************************

             File: mysql-bin.000003

         Position: 434

     Binlog_Do_DB:

 Binlog_Ignore_DB:

Executed_Gtid_Set:

1 row in set (0.00 sec)

# slave

mysql> change master to

    -> master_host='master',

    -> master_user='repl',

    -> master_password='repl_password',

    -> master_log_file='mysql-bin.000003',

    -> master_log_pos=434;

Query OK, 0 rows affected, 2 warnings (0.01 sec)

mysql> start slave;

Query OK, 0 rows affected (0.00 sec

mysql> show slave status\G;

*************************** 1. row ***************************

               Slave_IO_State: Waiting for master to send event

                  Master_Host: master

                  Master_User: repl

                  Master_Port: 3306

                Connect_Retry: 60

              Master_Log_File: mysql-bin.000003

          Read_Master_Log_Pos: 434

               Relay_Log_File: 0ddecac560e1-relay-bin.000002

                Relay_Log_Pos: 320

        Relay_Master_Log_File: mysql-bin.000003

             Slave_IO_Running: Yes

            Slave_SQL_Running: Yes

            .....

            .....

　　主从正常

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Docker mysql 主从

一、独立容器部署mysql主从

二、Docker Swarm mysql主从

三、服务编排部署mysql主从

Docker mysql 主从的更多相关文章

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