Docker上部署mysql8主从复制的实现

docker run -d -p 3306:3306 --privileged=true -v /mysql/log:/var/log/mysql -v /mysql/data:/var/lib/mysql -v /mysql/conf:/etc/mysql/conf.d -e MYSQL_ROOT_PASSWORD=123456  --name mysql mysql

mysql> use mysql

mysql> update user set authentication_string='123456' where user='root' and host='localhost';

mysql> flush privileges;

cd /mysql/conf
vim my.cnf
插入以下内容：
[client]
default_character_set=utf8
[mysqld]
collation_server = utf8_general_ci
character_set_server = utf8

docker restart mysql
docker exec -it mysql bash

docker network create --driver bridge mysql-master-slave

set global max_connections=500;
set global mysqlx_max_connections=500;

# 创建主库数据存放目录
mkdir -p /home/docker/mysql/master/data
# 创建主库配置存放目录
mkdir -p /home/docker/mysql/master/conf
 
# 创建从库1数据存放目录
mkdir -p /home/docker/mysql/slave1/data
# 创建从库1配置存放目录
mkdir -p /home/docker/mysql/slave1/conf

[mysqld]
pid-file        = /var/run/mysqld/mysqld.pid
socket          = /var/run/mysqld/mysqld.sock
datadir         = /var/lib/mysql
 
secure-file-priv= NULL
 
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
 
# 服务器唯一ID，默认是1
server-id=10
 
# 启用二进制日志
log-bin=mysql-bin
 
# 最大连接数 
max_connections=10000
 
# 设置默认时区
default-time_zone='+8:00'
 
# 0:区分大小写
# 1:不区分大小写
lower_case_table_names=1
 
!includedir /etc/mysql/conf.d/

[mysqld]
pid-file        = /var/run/mysqld/mysqld.pid
socket          = /var/run/mysqld/mysqld.sock
datadir         = /var/lib/mysql
 
secure-file-priv= NULL
 
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
 
# 服务器唯一ID，默认是1
server-id=11
 
# 启用二进制日志
log-bin=mysql-bin
 
# 最大连接数 
max_connections=10000
 
# 设置默认时区
default-time_zone='+8:00'
 
# 0:区分大小写
# 1:不区分大小写
lower_case_table_names=1
 
!includedir /etc/mysql/conf.d/

docker run -d -p 3316:3306 --name mysql_master --restart=always --network mysql-master-slave -v /home/docker/mysql/master/data:/var/lib/mysql -v /home/docker/mysql/master/conf/my.cnf:/etc/mysql/my.cnf -e MYSQL_ROOT_PASSWORD=123456 mysql

docker run -d -p 3326:3306 --name mysql_slave1 --restart=always --network mysql-master-slave -v /home/docker/mysql/slave1/data:/var/lib/mysql -v /home/docker/mysql/slave1/conf/my.cnf:/etc/mysql/my.cnf -e MYSQL_ROOT_PASSWORD=123456 mysql

# 在容器 mysql_master 中开启一个交互模式的终端
docker exec -it mysql_master /bin/bash
 
# 在容器 mysql_slave1 中开启一个交互模式的终端
docker exec -it mysql_slave1 /bin/bash
 
# mysql 登录
mysql -u root -p
 
# 给予远程用户所有表所有权限
GRANT ALL ON *.* TO 'root'@'%';
 
# 更改加密规则
ALTER USER 'root'@'localhost' IDENTIFIED BY '123456' PASSWORD EXPIRE NEVER;
 
# 远程访问
ALTER USER 'root'@'%' IDENTIFIED WITH mysql_native_password BY '123456';
 
# 刷新权限
flush privileges;

CREATE USER 'woniu'@'%' IDENTIFIED WITH mysql_native_password BY 'woniu123456';
 
GRANT REPLICATION SLAVE ON *.* TO 'woniu'@'%';

flush privileges;

SHOW MASTER STATUS;

change master to master_host='192.168.190.133', master_user='woniu', master_password='woniu123456', master_port=3316, master_log_file='mysql-bin.000003', master_log_pos=2838, master_connect_retry=30;

# 开始同步
start slave;
 
# 同步状态
show slave status ;