缺点说明:1主容易崩,后面在配置2主的多从的模式
mysql-master01 主节点mysql
docker run -p 3307:3306 --name mysql-master01 \
> -v /mydata/mysql/master01/log:/var/log/mysql \
> -v /mydata/mysql/master01/data:/var/lib/mysql \
> -v /mydata/mysql/master01/conf:/etc/mysql \
> -e MYSQL_ROOT_PASSWORD=root -d mysql:5.7
mysql-slaver01 从节点mysql
docker run -p 3317:3306 --name mysql-slaver01 \
-v /mydata/mysql/slaver01/log:/var/log/mysql \
-v /mydata/mysql/slaver01/data:/var/lib/mysql \
-v /mydata/mysql/slaver01/conf:/etc/mysql \
-e MYSQL_ROOT_PASSWORD=root -d mysql:5.7
参数说明
主
vi /mydata/mysql/master01/conf/my.cnf
从
vi /mydata/mysql/slaver01/conf/my.cnf
内容
[client]
default-character-set=utf8
[mysql]
default-character-set=utf8
[mysqld]
init_connect='SET collation_connection = utf8_unicode_ci'
init_connect='SET NAMES utf8'
character-set-server=utf8
collation-server=utf8_unicode_ci
skip-character-set-client-handshake
# skip-name-resolve 一定要加,不然连接 mysql 会超级慢
skip-name-resolve
修改master01-主节点配置
vi /mydata/mysql/master01/conf/my.cnf
补充主从复制的配置
# server_id随便指定的唯一id
server_id=1
log-bin=mysql-bin
# 不是只读
read-only=0
#日志记录-mysql同步是通过日志的方式,这边是指定需要同步的库名
#指定同步2个数据库iot01和iot02
binlog-do-db=iot01
binlog-do-db=iot02
#排除mysql原本(自带)的数据库
replicate-ignore-db=mysql
replicate-ignore-db=sys
replicate-ignore-db=information_schema
replicate-ignore-db=performance_schema
修改slaver01-c从节点配置
vim /mydata/mysql/slaver01/conf/my.cnf
内容
#指定服务的id-随机唯一就行
server_id=2
log-bin=mysql-bin
# read-only=1表示只读
read-only=1
#指定需要同步的库
binlog-do-db=iot01
binlog-do-db=iot02
#排除不需要同步的库
replicate-ignore-db=mysql
replicate-ignore-db=sys
replicate-ignore-db=information_schema
replicate-ignore-db=performance_schema
如图:
docker restart mysql-master01 mysql-slaver01
配置容器开启自启
sudo docker update mysql-master01 --restart=always
sudo docker update mysql-slaver01 --restart=always
如果启动失败,可以查看日志
docker logs mysql-master01
docker logs mysql-slaver01
进入容器的命令
docker exec -it 容器名 /bin/bash
补充说明:都开启root远程访问
进入容器:
#主mysql
docker exec -it mysql-master01 /bin/bash
#从mysql
docker exec -it mysql-slaver01 /bin/bash
登入mysql
#然后输入密码 root
mysql -u root -p
开启远程访问
#授权
grant all privileges on *.* to 'root'@'%' identified by 'root' with grant option;
#刷新
flush privileges;
#退出
exit;
创建一个有复制权限的账号
GRANT REPLICATION SLAVE ON *.* to 'backup'@'%' identified by '123456';
用途:[从节点mysql]可以用这个账号去连接主节点,进行复制
查看状态
show master status;
配置同步
change master to master_host='192.168.56.10',master_user='backup',master_password='123456',master_log_file='mysql-bin.000003' master_log_pos=0,master_port=3307;
如图:
启动从库同步
start slave;
查看从库状态
show slave status;