[mysqld]
server_id = 1
log-bin= mysql-bin
read-only=0
replicate-ignore-db=mysql
replicate-ignore-db=sys
replicate-ignore-db=information_schema
replicate-ignore-db=performance_schema

slave從庫對(duì)應(yīng)的my.cnf配置文件為：

[mysqld]
server_id = 2
log-bin= mysql-bin
read-only=1
replicate-ignore-db=mysql
replicate-ignore-db=sys
replicate-ignore-db=information_schema
replicate-ignore-db=performance_schema

三、創(chuàng)建兩個(gè)MySQL數(shù)據(jù)庫容器

創(chuàng)建master主數(shù)據(jù)庫容器

docker run --name mysql-master -d -p 3307:3306 -e MYSQL_ROOT_PASSWORD=123456 -v /Users/yumaster/test/mysql_master_slave/master/data:/var/lib/mysql -v /Users/yumaster/test/mysql_master_slave/master/conf/my.cnf:/etc/mysql/my.cnf -v /Users/yumaster/test/mysql_master_slave/master/mysql-files:/var/lib/mysql-files mysql/mysql-server

創(chuàng)建slave從數(shù)據(jù)庫容器

docker run --name mysql-slave -d -p 3308:3306 -e MYSQL_ROOT_PASSWORD=123456 -v /Users/yumaster/test/mysql_master_slave/slave/data:/var/lib/mysql -v /Users/yumaster/test/mysql_master_slave/slave/conf/my.cnf:/etc/mysql/my.cnf -v /Users/yumaster/test/mysql_master_slave/slave/mysql-files:/var/lib/mysql-files mysql/mysql-server

如下圖，說明兩個(gè)MySQL容器創(chuàng)建成功

此時(shí)我們打開Docker儀表板可以看到，兩個(gè)容器已經(jīng)運(yùn)行起來了。而且端口就是我們之前創(chuàng)建的對(duì)應(yīng)端口

我們通過Navicat連接會(huì)報(bào)哦1130錯(cuò)誤，是因?yàn)樗B接的用戶賬戶沒有遠(yuǎn)程連接的權(quán)限。需要更改mysql數(shù)據(jù)庫里的user表里的host項(xiàng)

把localhost改成%

具體步驟：

mysql> use mysql
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A

Database changed
mysql> select host from user where user='root';
+-----------+
| host      |
+-----------+
| localhost |
+-----------+
1 row in set (0.01 sec)

mysql> update user set host='%' where user = 'root';
Query OK, 1 row affected (0.01 sec)
Rows matched: 1  Changed: 1  Warnings: 0

mysql> select host from user where user='root';
+------+
| host |
+------+
| %    |
+------+
1 row in set (0.00 sec)

mysql> flush privileges;
Query OK, 0 rows affected (0.01 sec)

四、主從數(shù)據(jù)庫配置

master主數(shù)據(jù)庫配置：

//進(jìn)入master主數(shù)據(jù)容器
docker exec -it mysql-master mysql -uroot -p123456
//創(chuàng)建一個(gè)用戶來同步數(shù)據(jù)，每個(gè)slave使用標(biāo)準(zhǔn)的MySQL用戶名和密碼連接master。進(jìn)行復(fù)制操作的用戶會(huì)授予REPLICATION SLAVE 權(quán)限。mysql8 之前的版本中加密規(guī)則是mysql_native_password,而在mysql8之后,加密規(guī)則是caching_sha2_password
CREATE USER 'slave'@'%' IDENTIFIED BY '123456';（這樣有可能在slave創(chuàng)建與master連接時(shí)報(bào)錯(cuò)）
或
CREATE USER 'slave'@'%' IDENTIFIED WITH mysql_native_password BY '123456';
//對(duì)用戶進(jìn)行授權(quán)
GRANT REPLICATION SLAVE ON *.* to 'slave'@'%';
//查看狀態(tài)，記住File、Position的值，在Slave中將用到
show master status;
//查詢master容器的IP，會(huì)在slave設(shè)置主庫連接時(shí)用到
docker inspect mysql-master | grep IPA;

mster的狀態(tài)，F(xiàn)ile mysql-bin.000003 Position 661

slave從數(shù)據(jù)庫配置：

//進(jìn)入slave從數(shù)據(jù)容器
docker exec -it mysql-slave mysql -uroot -p123456
//設(shè)置主庫鏈接 change master to
change master to master_host='172.17.0.2',master_user='slave',master_password='123456',master_log_file='mysql-bin.000003',master_log_pos=661,master_port=3306;
//啟動(dòng)從庫同步
start slave;
//查看狀態(tài)
show slave status\G;
//如果 show slave status\G命令結(jié)果中出現(xiàn)：
//Slave_IO_Running: Yes
//Slave_SQL_Running: Yes
//以上兩項(xiàng)都為Yes，那說明沒問題了。
//否則，從新配置從數(shù)據(jù)
stop slave;
reset slave all;

啟動(dòng)從庫同步成功

五、主從驗(yàn)證

我們?cè)趍aster上創(chuàng)建一個(gè)數(shù)據(jù)庫，然后創(chuàng)建一張表，再插入一條數(shù)據(jù)，相應(yīng)的slave也會(huì)增加；

create database master_slave_demo;
use master_slave_demo;
create table userinfo(username varchar(50),age int);
insert into userinfo values('Toulon',25);
select * from userinfo;

在執(zhí)行命令之前，主從數(shù)據(jù)庫數(shù)量相同；

master執(zhí)行命令之后slave增加對(duì)應(yīng)數(shù)據(jù)

可以發(fā)現(xiàn)主庫新增的數(shù)據(jù)已經(jīng)同步過來了，MySQL的主從復(fù)制就設(shè)置完成了。(測(cè)試環(huán)境，MacOS M1 ARM64機(jī)器，Docker，MySQL 8.0.27)

到此這篇關(guān)于MacOS使用Docker創(chuàng)建MySQL主從數(shù)據(jù)庫的文章就介紹到這了,更多相關(guān)Docker創(chuàng)建MySQL主從數(shù)據(jù)庫內(nèi)容請(qǐng)搜索腳本之家以前的文章或繼續(xù)瀏覽下面的相關(guān)文章希望大家以后多多支持腳本之家！

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