Docker 部署 Mysql8.0的方法示例

1. 参照官网，安装docker

2.拉取mysql镜像 （默认拉取最新的镜像）8.0.11

docker pull mysql

3.在宿主机创建持久化 mysql data 及mysql.cnf

mkdir /usr/local/mysqlData/test/cnfmkdir /usr/local/mysqlData/test/datavi /usr/loal/mysqlData/test/cnf/mysql.cnf

设置本地文件共享：

Docker -> Preferences... -> File Sharing

4.添加操作权限

chmod 777 /usr/local/mysqlData/test/data 备注：挂载时权限验证（操作权限）

5.运行镜像，设置初始密码、本机与docker端口的映射与挂载本地数据盘 (启动msyql服务)

docker run -itd -p 3307:3306 --name test_mysql -v /usr/local/mysqlData/test/conf:/etc/mysql -v /usr/local/mysqlData/test/data:/var/lib/mysql -e MYSQL_ROOT_PASSWORD=123456 mysql

运行结果：

6. 进入test_mysql 容器

Docker exec -it test_mysql bash

如图：

7.在容器内登录mysql

8.查看用户信息

mysql> select user,host,authentication_string from mysql.user;+------------------+-----------+------------------------------------------------------------------------+| user | host | authentication_string |+------------------+-----------+------------------------------------------------------------------------+| root | % | $A$005$7o{’|’AomAw(QvF#.p5wLtCnrG6yX6XQdDVQivGr96POVL.gKnhIAhUhl3. || mysql.infoschema | localhost | *THISISNOTAVALIDPASSWORDTHATCANBEUSEDHERE || mysql.session | localhost | *THISISNOTAVALIDPASSWORDTHATCANBEUSEDHERE || mysql.sys | localhost | *THISISNOTAVALIDPASSWORDTHATCANBEUSEDHERE || root | localhost | $A$005$0.-%i)H{uYi@zFo7uYF82fYw7DsA93vYLr4uZv6I1tSKao0sbzzcDap3 |+------------------+-----------+------------------------------------------------------------------------+5 rows in set (0.00 sec)

9.设置权限（为root分配权限，以便可以远程连接）

mysql> grant all PRIVILEGES on *.* to root@’%’ WITH GRANT OPTION;Query OK, 0 rows affected (0.01 sec)

10.由于Mysql5.6以上的版本修改了Password算法，这里需要更新密码算法，便于使用Navicat连接

mysql> grant all PRIVILEGES on *.* to root@’%’ WITH GRANT OPTION;Query OK, 0 rows affected (0.01 sec)mysql> ALTER user ’root’@’%’ IDENTIFIED BY ’123456’ PASSWORD EXPIRE NEVER;Query OK, 0 rows affected (0.11 sec)mysql> ALTER user ’root’@’%’ IDENTIFIED WITH mysql_native_password BY ’123456’;Query OK, 0 rows affected (0.11 sec)mysql> FLUSH PRIVILEGES;Query OK, 0 rows affected (0.01 sec)

11. 使用navicat 连接mysql,如图：

12.建库、建表、加数据

查看挂载本地数据盘的内容：

13. 测试将容器移除后，数据是否仍然存在

docker rm -f test_msyql

容器已经移除了。重新部署test_mysql,参照第5的步骤，进入新容器，访问数据库：

xushijiandeiMac:data xushijian$ docker run -itd -p 3307:3306 --name test_mysql -v /usr/local/mysqlData/test/conf:/etc/mysql -v /usr/local/mysqlData/test/data:/var/lib/mysql -e MYSQL_ROOT_PASSWORD=123456 mysql65b7a60050aaef5765ed055acfd071c7c76f60e85dc25d0e73e0d56eae14aed1xushijiandeiMac:data xushijian$ docker exec -it test_mysql bashroot@65b7a60050aa:/# mysql -uroot -pEnter password: Welcome to the MySQL monitor. Commands end with ; or g.Your MySQL connection id is 8Server version: 8.0.11 MySQL Community Server - GPLCopyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.Oracle is a registered trademark of Oracle Corporation and/or itsaffiliates. Other names may be trademarks of their respectiveowners.Type ’help;’ or ’h’ for help. Type ’c’ to clear the current input statement.mysql> show databases;+--------------------+| Database |+--------------------+| information_schema || mysql || performance_schema || sys|| test|+--------------------+5 rows in set (0.01 sec)mysql> use test;Reading table information for completion of table and column namesYou can turn off this feature to get a quicker startup with -ADatabase changedmysql> select * from user_user;+---------+-----------+-------------+--------+| user_id | user_name | phone | note |+---------+-----------+-------------+--------+| 1 | 没长正 | 13980000000 | 测试 |+---------+-----------+-------------+--------+1 row in set (0.06 sec)

发现数据仍然可以使用，不需要额外的配置，实现了数据的持久化。

阿里云上docker 部署 MySQL(通过编排模板部署)

<1. 配置同第3步类似（只是目录变化）

master: image: ’mysql:latest’ environment: - MYSQL_ROOT_PASSWORD=123456 ports: - ’3307:3306/tcp’ volumes: - ’/usr/local/mysqlData/master/conf:/etc/mysql:rw’ - ’/usr/local/mysqlData/master/data:/var/lib/mysql:rw’ labels: aliyun.scale: ’1’

<2.如下图,已部署完成

[root@c13a6d832fd0a49398c62002361d75c60-node1 ~]# clear[root@c13a6d832fd0a49398c62002361d75c60-node1 ~]# docker psCONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES8597b7539a3a mysql:latest 'docker-entrypoint...' 3 minutes ago Up 3 minutes 0.0.0.0:3307->3306/tcp mysql_master_1

<3.进入容器，进行权限设置，后续过程参照本机

[root@c13a6d832fd0a49398c62002361d75c60-node1 /]# docker exec -it mysql_master_1 bashroot@2fc0bbf48941-mysql-master-1:/# mysql -uroot -pEnter password: Welcome to the MySQL monitor. Commands end with ; or g.Your MySQL connection id is 8Server version: 8.0.11 MySQL Community Server - GPLCopyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.Oracle is a registered trademark of Oracle Corporation and/or itsaffiliates. Other names may be trademarks of their respectiveowners.Type ’help;’ or ’h’ for help. Type ’c’ to clear the current input statement.mysql>

<4. 开放3307端口，使得外网可以访问

云服务器ECS -> 安全组 -> 选择所在的地区 ->配置规则 -> 添加安全组

添加安全组，如图：

5.外网访问，如下图

已连接成功。

主从环境搭建：

主库：

[root@c13a6d832fd0a49398c62002361d75c60-node1 ~]# docker exec -it mysql_master_1 bashroot@2fc0bbf48941-mysql-master-1:/# mysql -uroot -pEnter password: Welcome to the MySQL monitor. Commands end with ; or g.Your MySQL connection id is 9Server version: 8.0.11 MySQL Community Server - GPLCopyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.Oracle is a registered trademark of Oracle Corporation and/or itsaffiliates. Other names may be trademarks of their respectiveowners.Type ’help;’ or ’h’ for help. Type ’c’ to clear the current input statement.mysql> show databases;+--------------------+| Database |+--------------------+| information_schema || mysql || performance_schema || sys|+--------------------+4 rows in set (0.30 sec)mysql> create database test;Query OK, 1 row affected (0.12 sec)mysql> show database;ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ’database’ at line 1mysql> show databases;+--------------------+| Database |+--------------------+| information_schema || mysql || performance_schema || sys|| test|+--------------------+5 rows in set (0.00 sec)

从库：

[root@c13a6d832fd0a49398c62002361d75c60-node1 ~]# docker exec -it mysql-slave_slave_1 bashroot@c8661e16e3fd-mysql-slave-slave-1:/# mysql -uroot -pEnter password: Welcome to the MySQL monitor. Commands end with ; or g.Your MySQL connection id is 10Server version: 8.0.11 MySQL Community Server - GPLCopyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.Oracle is a registered trademark of Oracle Corporation and/or itsaffiliates. Other names may be trademarks of their respectiveowners.Type ’help;’ or ’h’ for help. Type ’c’ to clear the current input statement.mysql> show databases;+--------------------+| Database |+--------------------+| information_schema || mysql || performance_schema || sys|+--------------------+4 rows in set (0.40 sec)mysql> show slave statusG*************************** 1. row ***************************Slave_IO_State: Waiting for master to send event 主从配置成功！ Master_Host: 47.94.225.124 Master_User: rep Master_Port: 3307Connect_Retry: 60 Master_Log_File: binlog.000003 Read_Master_Log_Pos: 155Relay_Log_File: c8661e16e3fd-mysql-slave-slave-1-relay-bin.000004Relay_Log_Pos: 363 Relay_Master_Log_File: binlog.000003 Slave_IO_Running: Yes Slave_SQL_Running: Yes Replicate_Do_DB: Replicate_Ignore_DB: Replicate_Do_Table: Replicate_Ignore_Table: Replicate_Wild_Do_Table: Replicate_Wild_Ignore_Table: Last_Errno: 0 Last_Error: Skip_Counter: 0 Exec_Master_Log_Pos: 155 Relay_Log_Space: 762 Until_Condition: NoneUntil_Log_File: Until_Log_Pos: 0 Master_SSL_Allowed: No Master_SSL_CA_File: Master_SSL_CA_Path:Master_SSL_Cert: Master_SSL_Cipher: Master_SSL_Key: Seconds_Behind_Master: 0Master_SSL_Verify_Server_Cert: NoLast_IO_Errno: 0Last_IO_Error: Last_SQL_Errno: 0Last_SQL_Error: Replicate_Ignore_Server_Ids:Master_Server_Id: 1 Master_UUID: a482f5fe-80fb-11e8-9fb1-0242ac12020c Master_Info_File: mysql.slave_master_info SQL_Delay: 0 SQL_Remaining_Delay: NULL Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates Master_Retry_Count: 86400 Master_Bind: Last_IO_Error_Timestamp: Last_SQL_Error_Timestamp: Master_SSL_Crl: Master_SSL_Crlpath: Retrieved_Gtid_Set: Executed_Gtid_Set: Auto_Position: 0 Replicate_Rewrite_DB: Channel_Name: Master_TLS_Version: Master_public_key_path: Get_master_public_key: 01 row in set (0.00 sec)mysql> show databases;+--------------------+| Database |+--------------------+| information_schema || mysql || performance_schema || sys|+--------------------+4 rows in set (1.01 sec)mysql> show database;ERROR 1064 (42000): You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ’database’ at line 1mysql> show databases;+--------------------+| Database |+--------------------+| information_schema || mysql || performance_schema || sys|| test|+--------------------+5 rows in set (0.00 sec)

主从库原理分析：

i/o线程去请求主库 的binlog，并将得到的binlog日志写到relay log（中继日志） 文件中； 主库会生成一个 log dump 线程，用来给从库 i/o线程传binlog；

SQL 线程，会读取relay log文件中的日志，并解析成具体操作，来实现主从的操作一致，而最终数据一致；

即： 从库IO线程请求 -> 中继日志 ->获取binlog ->从库SQL线程，解析

参考：

https://docs.docker.com/ docker 官网文档

https://blog.csdn.net/gf0515/article/details/80466213 Mac Navicat连接Docker MySql8.0

docker mysql 主从复制

https://blog.csdn.net/qq_28804275/article/details/80891951 主从环境搭建

docker mysql Dockerfile mysql 开源镜像Dockerfile及配置

https://www.cnblogs.com/Aiapple/p/5792939.html 主从复制原理、高可用分析

http://www.cnblogs.com/Aiapple/p/5793786.html 实战

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