MySQL master-slave replication configuration construction, one step in place

1.准备工作

from already installedlinuxThe virtual machine is cloned to prepare for the slave library

 Then power on the cloned virtual machine 登录

vim /etc/sysconfig/network-scripts/ifcfg-ens33

TYPE=Ethernet
PROXY_METHOD=none
BROWSER_ONLY=no
BOOTPROTO=static
IPADDR="192.168.220.128"        # 设置的静态IP地址
NETMASK="255.255.255.0"         # 子网掩码
GATEWAY="192.168.220.2"         # 网关地址
DNS1="192.168.220.2"            # DNS服务器
DEFROUTE=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_FAILURE_FATAL=no
IPV6_ADDR_GEN_MODE=stable-privacy
NAME=ens33
UUID=afd0baa3-8bf4-4e26-8d20-5bc426b75fd6
DEVICE=ens33
ONBOOT=yes
ZONE=public

如果你的系统没有vim  下载一个就好,不然用vi  一样的效果

vi /etc/sysconfig/network-scripts/ifcfg-ens33

 

 

 The static resources inside are configured according to their actual situation

特别注意ipIf the address is to be modified, it must be at the beginningip中间  我这里就是128~254之间

好了言归正传

从库的IP地址在128~254Just write one in there

TYPE=Ethernet
PROXY_METHOD=none
BROWSER_ONLY=no
BOOTPROTO=static
IPADDR="192.168.220.130"        # 设置的静态IP地址
NETMASK="255.255.255.0"         # 子网掩码
GATEWAY="192.168.220.2"         # 网关地址
DNS1="192.168.220.2"            # DNS服务器
DEFROUTE=yes
IPV4_FAILURE_FATAL=no
IPV6INIT=yes
IPV6_AUTOCONF=yes
IPV6_DEFROUTE=yes
IPV6_FAILURE_FATAL=no
IPV6_ADDR_GEN_MODE=stable-privacy
NAME=ens33
UUID=afd0baa3-8bf4-4e26-8d20-5bc426b75fd6
DEVICE=ens33
ONBOOT=yes
ZONE=public

我这里就写130了

Here from the libraryIP配置好了以后ESC 退出 -->: wq  保存退出

重启网络服务

ip地址修改完毕之后,需要重启网络服务,执行如下指令：

systemctl restart network

 After restarting the networkIP已经发生了改变,此时重启虚拟机

 重启后登录,输入ip addr This completes the server setup of the slave library

 Then do the following preparations on the two servers

1.Fire please open3306端口号

firewall-cmd --zone=public --add-port=3306/tcp --permanent

立即加载

firewall-cmd --reload

查看端口号

firewall-cmd --zone=public --list-ports

 成功,Open other ports in the same way

2.Start the two databases on the two servers

systemctl start mysqld

Then log on to both serversMySQL验证是否可以正常启动

主库配置

1.退出数据库

输入

vim /etc/my.cnf

在[mysqld]

最下面配置

log-bin=mysql-bin   #[必须]启用二进制日志
server-id=200       #[必须]服务器唯一ID(唯一即可)

2.重启Mysql服务

 systemctl restart mysqld 

3.登录MySql 并执行如下指令,创建用户并授权

GRANT REPLICATION SLAVE ON *.* to 'xiaozhang'@'%' identified by '[email protected]';

注：上面SQL的作用是创建一个用户 xiaozhang ,密码为 [email protected] ,并且给xiaozhang用户授予REPLICATION SLAVE权限.常用于建立复制时所需要用到的用户权限,也就是slave必须被master授权具有该权限的用户,才能通过该用户复制.

4.登录MySql数据库,查看master同步状态

show master status;

 

 记录下File 和Position的值

Then don't operate

从库配置

1). 修改Mysql数据库的配置文件vim  /etc/my.cnf

Because the slave library is cloned from the server of the master library  All itself has oneserver-uuid是相同的,要修改一下,不然最后会报错,slave_IO_Running:no

The following is correct

输入

vim /var/lib/mysql/auto.cnf

to such a content interface,Just change the number at the back,Make master library and slave libraryserver-uuidInconsistencies can be avoided in advance

Don't delete too much  If you delete it, you will not be able to log inMySql了

2. 重启Mysql服务

systemctl restart mysqld

3. 登录Mysql数据库,设置主库地址及同步位置

change master to master_host='192.168.220.128',master_user='xiaozhang',master_password='[email protected]',master_log_file='mysql-bin.000001',master_log_pos=154;

 注意: 这里的IPConfigure it according to the server address of your own main library,followed by the username and password,According to the configuration you just set,

Second, pay special attentionfile和positionConfigure according to the value just now,The special note here is here"0"的个数,Xiaobian suffered a loss

 

 Go ahead by ten

这里配置3If such an error occurs after the step,表示当前有slave在运行

输入

start slave;

Close the previous one

4. 查看从数据库的状态

show slave status;

Entering this will display the data in rows,Do not let the change view(can be copied toNotepad++中查看)

Direct input is recommended

show slave status\G

表示将查询结果进行按列打印

双yes就可以了 

测试

到Navicat中连接

 在主库中创建一个数据库,Refresh the database of the slave library later,See if the slave library creates a database with the same name at the same time,The synchronization appears to indicate success,Create the table later,It's easy to test additions, deletions, and changes!

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