MYSQL MM HA安装配置及调优

Posted 2022-05-20 wemux

Centos 7安装

系统安装过程不再演示​

主机环境信息：​

Roles​	Hostname​	IP Address​
Node1​	mysql01​	192.168.137.201​
Node2​	mysql02​	192.168.137.202​
Keepalived VIP​		192.168.137.205​

Mysql 8.0.25安装

配置yum源​

下载mysql8源并安装

[root@mysql01 ~]# wget -i -c https://dev.mysql.com/get/mysql80-community-release-el7-3.noarch.rpm
[root@mysql01 ~]# yum -y install mysql80-community-release-el7-3.noarch.rpm

安装Mysql 8.0.25​

[root@mysql01 ~]# yum provides mysql-community-server
[root@mysql01 ~]# yum -y install mysql-community-server-8.0.25-1.el7.x86_64

​

启动服务​

配置开机自启，并启动mysqld服务​

[root@mysql01 ~]# systemctl enable --now mysqld

修改密码​

获取初始密码​

[root@mysql01 ~]# grep "password" /var/log/mysqld.log
2021-06-11T16:27:57.560348Z 6 [Note] [MY-010454] [Server] A temporary password is generated for root@localhost: &F=lL&WXd2*P
[root@mysql02 ~]# grep "password" /var/log/mysqld.log
2021-06-11T16:27:58.439900Z 6 [Note] [MY-010454] [Server] A temporary password is generated for root@localhost: &-dkI8HcK69H

​

修改密码并配置​

[root@mysql01 ~]# mysql_secure_installation

​

Master-Master配置

数据库配置文件​

mysql01，相关配置部分如下所示​

[root@mysql01 ~]# cat /etc/my.cnf
server-id = 1  #任意自然n,只需要保证两台mysql主机不重复就可以
log-bin=mysql-bin  #开启二进制日志
auto_increment_increment=2 #步进值auto_imcrement 。一般有n台主mysql就填n
auto_increment_offset=1 #起始值，一般填写第n台主机mysql.此为第一台mysql
binlog_expire_logs_seconds=604800 #binglog失效日期，默认30天，此设置为7天
#binlog-ignore=mysql #忽略mysql库，可以不填写
#binlog-ignore=infomation_schema #忽略information_schema库，一般不填写

​

mysql02，相关配置部分如下所示​

[root@mysql02 ~]# cat /etc/my.cnf
server-id = 2
log-bin=mysql-bin
auto_increment_increment=2
auto_increment_offset=2
binlog_expire_logs_seconds=604800
#binlog-ignore=mysql
#binlog-ignore=infomation_schema
#replicate-do-db=test

​

重启mysqld服务​

[root@mysql01 ~]# systemctl restart mysqld
[root@mysql02 ~]# systemctl restart mysqld

Node1主从配置​

Node1配置​

创建复制用户​

mysql> create user repl@192.168.137.202 identified with mysql_native_password by replP@ssw0rd;
mysql> grant replication slave on *.* to repl@192.168.137.202;
mysql> flush privileges;

​

检查账户权限​

mysql> show grants for repl@192.168.137.202;
+------------------------------------------------------------+
| Grants for repl@192.168.137.202 |
+------------------------------------------------------------+
| GRANT REPLICATION SLAVE ON *.* TO `repl`@`192.168.137.202` |
+------------------------------------------------------------+

​

查看master状态，记录二进制文件名及位置信息​

show master status;

Example:​

Node2配置​

登录mysql02数据库，执行同步语句​

mysql> change master to
 -> master_host=192.168.137.201,
 -> master_user=repl,
 -> master_password=replP@ssw0rd,
 -> master_log_file=mysql-bin.000001,
 -> master_log_pos=869;

​

启动slave同步进程​

mysql> start slave;

检查slave状态，无error信息，则配置成功​

Node2主从配置​

Node2配置​

创建复制用户​

mysql> create user repl@192.168.137.201 identified with mysql_native_password by replP@ssw0rd;
mysql> grant replication slave on *.* to repl@192.168.137.201;
mysql> flush privileges;

​

检查账户权限​

mysql> show grants for repl@192.168.137.201;
+------------------------------------------------------------+
| Grants for repl@192.168.137.201 |
+------------------------------------------------------------+
| GRANT REPLICATION SLAVE ON *.* TO `repl`@`192.168.137.201` |
+------------------------------------------Linux系统 MySQL 运行状态及调优

 Nginx源码安装及调优配置（转）
 生产环境mysql安装规划及调优实践--mysql8.0.29为例
 Mysql运行状态查询命令及调优详解
 06: mysql索引查找原理及调优
 PostgreSQL on Azure.cn : 性能测试及调优