MySQL之双向主从加keepalived高可用

server_id = 1
log_bin = mysql-bin

server_id = 2
log_bin = mysql-bin

mysql -u root -p            #输入密码
mysql> grant replication slave on *.* to 'slave'@'192.168.204.139' identified by '123456';
mysql> flush privileges;

mysql -u root -p            #输入密码
flush tables with read lock;        #锁表操作
mysql> show master status;
+------------------+----------+--------------+------------------+-------------------+
| File             | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+----------+--------------+------------------+-------------------+
| mysql-bin.000012 |      120 |              |                  |                   |
+------------------+----------+--------------+------------------+-------------------+
1 row in set (0.00 sec)
mysqldump -u root -p --all-databases > mysqldump.sql
mysql -u root -p
mysql> unlock tables;
mysql> quit
    
scp myqsldump.sql 192.168.204.139:/root/

mysql -u root -p < mysqldump.sql

mysql -u root -p
mysql> change master to master_host='192.168.204.138',master_user='slave',master_password='123456',master_log_file='mysql-bin.000012',master_log_pos=120，master_port=3306;
start slave；

mysql -u root -p123456
mysql> grant replication slave on *.* to 'slave'@'192.168.204.138' identified by '123456'; //建立权限
mysql> flush privileges;

mysql -u root -p
mysql> show master status\G;
+------------------+----------+--------------+------------------+-------------------+
| File             | Position | Binlog_Do_DB | Binlog_Ignore_DB | Executed_Gtid_Set |
+------------------+----------+--------------+------------------+-------------------+
| mysql-bin.000009 |      120 |              |                  |                   |
+------------------+----------+--------------+------------------+-------------------+
1 row in set (0.00 sec)

mysql> change master to master_host='192.168.204.138',master_user='slave',master_password='123456',master_log_file='mysql-bin.000009',master_log_pos=120;
mysql> start slave;

wget http://www.keepalived.org/software/keepalived-1.2.15.tar.gz
tar zxvf keepalived-1.2.15.tar.gz
cd keepalived-1.2.15
./configure --prefix=/usr/local/keepalived
make && make install

cp /usr/local/keepalived/etc/rc.d/init.d/keepalived  /etc/init.d/
cp /usr/local/keepalived/etc/sysconfig/keepalived /etc/sysconfig/
mkdir /etc/keepalived/
cp /usr/local/keepalived/etc/keepalived/keepalived.conf /etc/keepalived/
cp /usr/local/keepalived/sbin/keepalived /usr/sbin/

! Configuration File for keepalived  
global_defs {  
    notification_email {  
    sunyuansheng7@gmail.com  
    }  
    notification_email_from sunyuansheng7@gmail.com  
    smtp_server 127.0.0.1  
    smtp_connect_timeout 30  
    router_id MySQL-ha  
}

vrrp_instance VI_1 {
    state master      
    interface eth0
    virtual_router_id 51
    priority 100       
    advert_int 1
    nopreempt         
        
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        192.168.204.222
    }
}

virtual_server 192.168.204.222 3306 {
    delay_loop 6
    lb_algo wrr
    lb_kind DR
    persistence_timeout 50        
    protocol TCP
    real_server 192.168.204.138 3306 {
        weight 3
        notify_down /var/lib/mysql/killkeepalived.sh  
        TCP_CHECK {
            connect_timeout 10        
            nb_get_retry 3           
            delay_before_retry 3      
            connect_port 3306        
        }
    }
}

! Configuration File for keepalived  
global_defs {  
    notification_email {  
    sunyuansheng7@gmail.com  
    }  
    notification_email_from sunyuansheng7@gmail.com  
    smtp_server 127.0.0.1  
    smtp_connect_timeout 30  
    router_id MySQL-ha  
}

vrrp_instance VI_1 {
    state backup      
    interface eth0
    virtual_router_id 51
    priority 100       
    advert_int 1
    nopreempt         
        
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
        192.168.204.222
    }
}

virtual_server 192.168.204.222 3306 {
    delay_loop 6
    lb_algo wrr
    lb_kind DR
    persistence_timeout 50        
    protocol TCP
    real_server 192.168.204.139 3306 {
        weight 3
        notify_down /var/lib/mysql/killkeepalived.sh  
        TCP_CHECK {
            connect_timeout 10        
            nb_get_retry 3           
            delay_before_retry 3      
            connect_port 3306        
        }
    }
}

vim /var/lib/mysql/killkeepalived.sh
     
#!/bin/sh  
pkill keepalived
     
chmod +x /var/lib/mysql/killkeepalived.sh

mysql> grant all privileges on *.* to 'test'@'%' identified by '123456';
mysql> flush privileges;