MySQL主主复制+Keepalived2.0实现mysql高可用
服务器1：192.168.1.100(server1)
服务器2：192.168.1.101(server2)
服务器操作系统：Firefly-Ubuntu16.04
MySQL5.7主主复制
安装mysql-server
#更新软件包列表
apt-get update
#安装mysql-server
apt-get install mysql-server
配置Server1
sudo vi /etc/mysql/my.cnf
bind-address=192.168.1.100
server-id=1
log_bin=/var/local/mysql/mysql-bin.log
expire_logs_days = 10
max_binlog_size = 100M
binlog_ignore_db = mysql
auto_increment_increment = 2
auto_increment_offset = 1
sudo systemctl start mysql
mysql -uroot -p
mysql>grant replication slave,repilcation client,super,reload on *.* to 'replicate'@'192.168.1.101' identified by 'password';
mysql>exit;
配置Server2
sudo vi /etc/mysql/my.cnf
bind-address=192.168.1.101
server-id=3
log_bin=/var/local/mysql/mysql-bin.log
expire_logs_days = 10
max_binlog_size = 100M
binlog_ignore_db = mysql
auto_increment_increment = 2
auto_increment_offset = 2
sudo systemctl start mysql
mysql -uroot -p
mysql>grant replication slave,repilcation client,super,reload on *.* to 'replicate'@'192.168.1.100' identified by 'password';
mysql>exit;
继续配置Server1
mysql -uroot -p
mysql>change master to
->master_host='192.168.1.101',
->master_port=3306,
->master_user='replicate',
->master_password='replicate',
->master_log_file='mysql-bin.000001',#根据另一台服务器的show master status
->master_log_pos=154;#根据另一台服务器的show master status
mysql>start slave;
mysql>exit;
继续配置Server2
mysql -uroot -p
mysql>change master to
->master_host='192.168.1.100',
->master_port=3306,
->master_user='replicate',
->master_password='replicate',
->master_log_file='mysql-bin.000001',#根据另一台服务器的show master status
->master_log_pos=164;#根据另一台服务器的show master status
mysql>start slave;
mysql>exit;
Keepalived-2.0安装
去keepalived官网下载tar.gz包，解压到/tmp目录下:
tar -zxvf keepalived-2.0.18.tar.gz /tmp/
cd /tmp/keepalived-2.0.18
apt-get install openssl libssl-dev
sudo ./configure
sudo make
sudo make install
设置keepalived开机自启动
sudo systemctl enable keepalived
配置文件Server1
#/etc/keepalived/keepalived.conf
! Configuraion file for Keepalived
global_defs {
router_id 1.100
notification_email {
[email protected]
}
notification_email_from [email protected]
smtp_server smtp.163.com
smtp_connect_timeout 30
}
vrrp_instance V_mysql_1 {
state BACKUP
interface eth0
virtual_router_id 233
priority 100
advert_int 1
nopreemept
authentication {
auth_type PASS
auth_pass password
}
virtual_ipaddress {
192.168.1.150/24
}
}
配置文件Server2
#/etc/keepalived/keepalived.conf
! Configuraion file for Keepalived
global_defs {
router_id 1.101 #更改路由ID
notification_email {
[email protected]
}
notification_email_from [email protected]
smtp_server smtp.163.com
smtp_connect_timeout 30
}
vrrp_instance V_mysql_1 {
state BACKUP
interface eth0
virtual_router_id 233
priority 90 #更改优先级
advert_int 1
nopreemept
authentication {
auth_type PASS
auth_pass password
}
virtual_ipaddress {
192.168.1.150/24
}
}
把两台服务器的keepalived服务启动起来就可以做测试啦！
systemctl start keepalived
DONE.
P.S:关于mysql服务监控，可以编写脚本放进keepalived配置文件里进行监控，也可以写一个脚本判断同步mysql和keepalived的启动停止状态并用crontab添加一个定时任务来监控。