MySQL 5.7.29主从安装配置
一、环境准备（关闭防火墙）
1、清除已安装数据库
[root@mysql01 ~]# rpm -qa | grep mariadb
mariadb-libs-5.5.35-3.el7.x86_64
[root@mysql01 ~]# yum remove mariadb-libs-5.5.35-3.el7.x86_64
2、安装libaio-devel包
挂载光盘
配置yum仓库
[root@mysql01 yum.repos.d]# mount /dev/sr0 /mnt
[root@mysql01 yum.repos.d]# yum clean all
[root@mysql01 yum.repos.d]# yum repolist all
[root@mysql01 yum.repos.d]# yum intall -y libaio-devel
3、创建用户及用户密码
[root@mysql01 ~]# groupadd mysql
[root@mysql01 ~]# useradd -g mysql mysql
[root@mysql01 ~]# passwd mysql
Changing password for user mysql.
New password:
BAD PASSWORD: The password is shorter than 8 characters
Retype new password:
passwd: all authentication tokens updated successfully.
4、创建数据目录、日志目录，并修改目录所有者所属组
[root@mysql01 ~]# mkdir -p /data/3306/data
[root@mysql01 ~]# mkdir -p /data/3306/binlog
[root@mysql01 yum.repos.d]# chown -R mysql.mysql /data*
二、上传MySQL数据库安装包并解压
[root@mysql01 stage]# ll
-rw-r--r--. 1 root root 664749587 Jun 9 20:46 mysql-5.7.29-linux-glibc2.12-x86_64.tar.gz
[root@mysql01 stage]# gunzip mysql-5.7.29-linux-glibc2.12-x86_64.tar.gz
[root@mysql01 stage]# ll
-rw-r--r--. 1 root root 2648074240 Jun 9 20:46 mysql-5.7.29-linux-glibc2.12-x86_64.tar
[root@mysql01 stage]# tar -xvf mysql-5.7.29-linux-glibc2.12-x86_64.tar
[root@mysql01 stage]# ll
drwxr-xr-x. 9 root root 4096 Jun 9 21:15 mysql-5.7.29-linux-glibc2.12-x86_64
-rw-r--r--. 1 root root 2648074240 Jun 9 20:46 mysql-5.7.29-linux-glibc2.12-x86_64.tar
三、创建软连接，并修改数据库安装目录所有者所属组
[root@mysql01 stage]# ln -s /stage/mysql-5.7.29-linux-glibc2.12-x86_64 /usr/local/mysql
[root@mysql01 stage]# ll /usr/local/
total 0
drwxr-xr-x. 2 root root 6 Mar 13 2014 bin
drwxr-xr-x. 2 root root 6 Mar 13 2014 etc
drwxr-xr-x. 2 root root 6 Mar 13 2014 games
drwxr-xr-x. 2 root root 6 Mar 13 2014 include
drwxr-xr-x. 2 root root 6 Mar 13 2014 lib
drwxr-xr-x. 2 root root 6 Mar 13 2014 lib64
drwxr-xr-x. 2 root root 6 Mar 13 2014 libexec
lrwxrwxrwx. 1 root root 42 Jun 9 21:17 mysql -> /stage/mysql-5.7.29-linux-glibc2.12-x86_64
drwxr-xr-x. 2 root root 6 Mar 13 2014 sbin
drwxr-xr-x. 5 root root 46 Mar 19 2019 share
drwxr-xr-x. 2 root root 6 Mar 13 2014 src
[root@mysql01 stage]# ll /usr/local/mysql/
total 292
drwxr-xr-x. 2 root root 4096 Jun 9 21:15 bin
drwxr-xr-x. 2 root root 52 Jun 9 21:15 docs
drwxr-xr-x. 3 root root 4096 Jun 9 21:15 include
drwxr-xr-x. 5 root root 4096 Jun 9 21:15 lib
-rw-r--r--. 1 7161 31415 276202 Dec 18 20:59 LICENSE
drwxr-xr-x. 4 root root 28 Jun 9 21:15 man
-rw-r--r--. 1 7161 31415 587 Dec 18 20:59 README
drwxr-xr-x. 28 root root 4096 Jun 9 21:15 share
drwxr-xr-x. 2 root root 86 Jun 9 21:15 support-files
四、修改环境变量并生效
[root@mysql01 stage]# vi /etc/profile
在文件末尾追加：
export PATH=/usr/local/mysql/bin:$PATH
[root@mysql01 stage]# source /etc/profile
[root@mysql01 stage]# mysql -V
mysql Ver 14.14 Distrib 5.7.29, for linux-glibc2.12 (x86_64) using EditLine wrapper
五、初始化
[root@mysql01 stage]# mysqld --initialize-insecure --user=mysql --basedir=/usr/local/mysql --datadir=/data/3306/data
六、编辑my.cnf参数文件
[root@mysql01 stage]# vi /etc/my3306.cnf
[mysqld]
user=mysql
basedir=/usr/local/mysql
datadir=/data/3306/data
log_bin=/data/3306/binlog/mysql-bin
port=3306
server_id=1
socket=/tmp/mysql.sock
[mysql]
socket=/tmp/mysql.sock
七、启动数据库
[root@mysql01 stage]# mysqld_safe --defaults-file=/etc/my3306.cnf &
八、登陆数据库
[root@mysql01 stage]# mysql
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 2
Server version: 5.7.29-log MySQL Community Server (GPL)
Copyright (c) 2000, 2020, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql>
九、修改用户密码
alter user 'root'@'localhost' identified by 'mysql';
十、同上，搭建从库
从库参数文件如下：
[mysqld]
user=mysql
basedir=/usr/local/mysql
datadir=/data/3307/data
log_bin=/data/3307/binlog
port=3307
server_id=2
socket=/tmp/mysql.sock
[mysql]
socket=/tmp/mysql.sock
十一、主从配置
1、主从库开启gtid功能
[root@mysql01 stage]# vi /etc/my3306.cnf
gtid_mode=ON
enforce_gtid_consistency=ON
log_slave_updates=1
[root@mysql02 stage]# vi /etc/my3307.cnf
gtid_mode=ON
enforce_gtid_consistency=ON
log_slave_updates=1
2、重启主从数据库使参数生效
[root@mysql01 stage]# mysqladmin shutdown
[root@mysql01 stage]# mysqld_safe --defaults-file=/etc/my3306.cnf &
[root@mysql02 stage]# mysqladmin shutdown
[root@mysql02 stage]# mysqld_safe --defaults-file=/etc/my3307.cnf &
3、确认主从数据库binlog已开启
mysql> select @@log_bin;
+-----------+
| @@log_bin |
+-----------+
| 1 |
+-----------+
1 row in set (0.00 sec)
4、主库创建复制用户
mysql> grant replication slave on *.* to 'repl'@'192.168.12.%' identified by 'mysql';
5、从库启动复制
CHANGE MASTER TO
MASTER_HOST='192.168.12.60',
MASTER_USER='repl',
MASTER_PASSWORD='mysql',
MASTER_PORT=3306,
MASTER_AUTO_POSITION=1;
mysql> start slave;
6、查看从库状态
mysql> show slave status\G;
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.12.60
Master_User: repl
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: binlog.000002
Read_Master_Log_Pos: 448
Relay_Log_File: mysql02-relay-bin.000002
Relay_Log_Pos: 655
Relay_Master_Log_File: binlog.000002
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
Replicate_Do_DB:
Replicate_Ignore_DB:
Replicate_Do_Table:
Replicate_Ignore_Table:
Replicate_Wild_Do_Table:
Replicate_Wild_Ignore_Table:
Last_Errno: 0
Last_Error:
Skip_Counter: 0
Exec_Master_Log_Pos: 448
Relay_Log_Space: 864
Until_Condition: None
Until_Log_File:
Until_Log_Pos: 0
Master_SSL_Allowed: No
Master_SSL_CA_File:
Master_SSL_CA_Path:
Master_SSL_Cert:
Master_SSL_Cipher:
Master_SSL_Key:
Seconds_Behind_Master: 0
Master_SSL_Verify_Server_Cert: No
Last_IO_Errno: 0
Last_IO_Error:
Last_SQL_Errno: 0
Last_SQL_Error:
Replicate_Ignore_Server_Ids:
Master_Server_Id: 1
Master_UUID: 86b0307f-aa58-11ea-a834-005056395a48
Master_Info_File: /data/3307/data/master.info
SQL_Delay: 0
SQL_Remaining_Delay: NULL
Slave_SQL_Running_State: Slave has read all relay log; waiting for more updates
Master_Retry_Count: 86400
Master_Bind:
Last_IO_Error_Timestamp:
Last_SQL_Error_Timestamp:
Master_SSL_Crl:
Master_SSL_Crlpath:
Retrieved_Gtid_Set: 86b0307f-aa58-11ea-a834-005056395a48:1
Executed_Gtid_Set: 86b0307f-aa58-11ea-a834-005056395a48:1
Auto_Position: 1
Replicate_Rewrite_DB:
Channel_Name:
Master_TLS_Version:
1 row in set (0.00 sec)
自此，MySQL 5.7.29主从配置完成。
