docker部署MySQL主从

 架构说明：

MySQL版本：5.7.35

操作系统： centos7.9 

一、master部署

 1） master配置文件

        说明：配置文件讲挂载进容器

[mysqld]
binlog_format = row
innodb_buffer_pool_size = 4G
enforce_gtid_consistency = on
server_id = 675
expire_logs_days = 7
slow_query_log = on
open_files_limit = 65536
log-bin = /var/lib/mysql/mysql-bin
long_query_time = 3
skip_name_resolve = true
log_output = file
gtid_mode = on_permissive
port = 3306
slow_query_log_file = /var/lib/mysql/mysql-slow.log
max_connections = 6000
sql-mode = "ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION"
character-set-client-handshake = FALSE
character-set-server = "utf8mb4"
collation-server = "utf8mb4_unicode_ci"
            
[client]
default-character-set = "utf8mb4"

[mysql]
deault-character-set = "utf8mb4"

注意：配置文件路径为： /home/mysql-master/conf/mysql.conf，与后面的docker容器挂载相匹配

2） 启动master容器

docker run -d -p 3306:3306 --privileged=true \
-v /home/mysql-master/log:/var/log/mysql  \
-v /home/mysql-master/data:/var/lib/mysql  \
-v /home/mysql-master/conf/mysql.conf:/etc/mysql/my.cnf -e MYSQL_ROOT_PASSWORD=lxm@123456 \
-v /usr/share/zoneinfo/Asia/Shanghai:/etc/localtime \
--name mysql-master mysql:5.7.35

 3）创建同步用户

CREATE USER 'slave'@'%' IDENTIFIED BY '123456';
GRANT REPLICATION SLAVE, REPLICATION CLIENT ON *.* TO 'slave'@'%';
flush privileges;

 二、从服务器搭建

1） 从服务器配置文件

[mysqld]
log_queries_not_using_indexes = on
innodb_buffer_pool_size = 4G
enforce_gtid_consistency = on
server_id = 50
slow_query_log = on
open_files_limit = 65536
log-bin = /var/lib/mysql/mysql-bin
long_query_time = 3
skip_name_resolve = true
log_output = file
gtid_mode = on_permissive
port = 3306
slow_query_log_file = /var/lib/mysql/mysql-slow.log
max_connections = 6000
character-set-client-handshake = FALSE
character-set-server = "utf8mb4"
collation-server = "utf8mb4_unicode_ci"
sql-mode = "ONLY_FULL_GROUP_BY,STRICT_TRANS_TABLES,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION"

[client]
default-character-set = "utf8mb4"

[mysql]
default-character-set = "utf8mb4"

 2） 启动从服务器

docker run -d -p 3306:3306 --privileged=true \
-v /home/mysql-slave/log:/var/log/mysql  \
-v /home/mysql-slave/data:/var/lib/mysql  \
-v /home/mysql-slave/conf/mysql.conf:/etc/mysql/my.cnf \
-v /usr/share/zoneinfo/Asia/Shanghai:/etc/localtime \
-e MYSQL_ROOT_PASSWORD=lxm@123456 \
--name mysql-slave mysql:5.7.35

 3） 主从设置

change master to master_host='192.168.161.20',

master_user='slave',

master_password='123456',

master_port=3306,

master_log_file='mysql-bin.000002',

master_log_pos=154,

master_connect_retry=30;
 

 参数说明：

master_log_file： 通过master服务器执行：show master status\G获取

master_log_pos：通过master服务器执行：show master status\G获取

4） 启动从服务器主从复制功能

####启动主从复制
start slave；

 
### 确认
show slave status \G

 

 三、测试验证

master执行数据写入

#创建数据库
CREATE DATABASE lxm DEFAULT CHARACTER SET utf8 COLLATE utf8_general_ci;

# 创建测试表
create table lxm_user(id int(2)not null,sname varchar(10) not null ,identify_no varchar(20),location varchar(100),primary key(id,sname));
insert into lxm_user values(1,'lxm','43900030949940930490','wuhan');
insert into lxm_user values(2,'lqingqing','43905990409292893','huangshi');
insert into lxm_user values(3,'wfengqiang','199376778794','dawang');
commit;

#从服务器验证

show databases;

select * from lxm_user;