WORD='repl_123',MASTER_LOG_FILE='mysql-bin.000008',MASTER_LOG_POS=105020214;
mysql>start slave;
3、配置keepalived
192.168.45.238
192.168.45.239
安装keepalived
wget http://www.keepalived.org/software/keepalived-1.2.2.tar.gz
tar zxvf keepalived-1.2.2.tar.gz
cd keepalived-1.2.2
./configure --prefix=/
make
make install
192.168.45.238 keepalived 配置
6># vim /etc/keepalived/keepalived.conf
! Configuration File for keepalived
global_defs {
router_id yuangnag.com
}
vrrp_script check_run {
script "/root/keepalived_check_mysql.sh"
interval 5
}
vrrp_sync_group VG1 {
group {
VI_1
}
}
vrrp_instance VI_1 {
state MASTER
interface eth0
virtual_router_id 88
priority 100
advert_int 1
nopreempt
authentication {
auth_type PASS
auth_pass yuangang.net
}
track_script {
check_run
}
virtual_ipaddress {
192.168.45.244
}
}
检测mysql脚本配置(两台mysql一样的配置)
#vim #!/bin/bash
MYSQL=/usr/local/mysql/bin/mysql
MYSQL_HOST=localhost
MYSQL_USER=root
MYSQL_PASSWORD=
CHECK_TIME=3
#mysql is working MYSQL_OK is 1 , mysql down MYSQL_OK is 0
MYSQL_OK=1
function check_mysql_helth (){
$MYSQL -h $MYSQL_HOST -u $MYSQL_USER -e "show status;" >/dev/null 2>&1
if [ $ = 0 ] ;then
MYSQL_OK=1
else
MYSQL_OK=0
fi
return $MYSQL_OK
}
while [ $CHECK_TIME -ne 0 ]
do
let "CHECK_TIME -= 1"
check_mysql_helth
if [ $MYSQL_OK = 1 ] ; then
CHECK_TIME=0
exit 0
fi
if [ $MYSQL_OK -eq 0 ] && [ $CHECK_TIME -eq 0 ]
then
/etc/init.d/keepalived stop
exit 1
fi
sleep 1
done
#!/bin/bash
MYSQL=/usr/local/mysql/bin/mysql
MYSQL_HOST=localhost
MYSQL_USER=root
MYSQL_PASSWORD=
CHECK_TIME=3
#mysql is working MYSQL_OK is 1 , mysql down MYSQL_OK is 0
MYSQL_OK=1
function check_mysql_helth (){
$MYSQL -h $MYSQL_HOST -u $MYSQL_USER -e "show status;" >/dev/null 2>&1
if [ $ = 0 ] ;then
MYSQL_OK=1
else
MYSQL_OK=0
fi
return $MYSQL_OK
}
while [ $CHECK_TIME -ne 0 ]
do
let "CHECK_TIME -= 1"
check_mysql_helth
if [ $MYSQL_OK = 1 ] ; then
CHECK_TIME=0
exit 0
fi
if [ $MYSQL_OK -eq 0 ] && [ $CHECK_TIME -eq 0 ]
then
/etc/init.d/keepalived stop
exit 1
fi
sleep 1
done
chmod 755 /root/keepalived_check_mysql.sh
192.168.45.239 keepalived配置
# vim /etc/keepalived/keepalived.conf
! Configuration File for keepalived
global_defs {
router_id yuangang.com
}
vrrp_script check_run {
script "/root/keepalived_check_mysql.sh"
interval 5
}
vrrp_sync_group VG1 {
group {
VI_1
}
}
vrrp_instance VI_1 {
state BACKUP
interface eth0
virtual_router_id 88
priority 80
advert_int 1
authentication {
auth_type PASS
auth_pass yuangang.com
}
track_script {
check_run
}
virtual_ipaddress {
192.168.45.244
}
}
启动 238上的keepalived mysql
/etc/init.d/keepalived start
/etc/init.d/mysqld start
启动239上的keepalived mysql
/etc/init.d/keepalived start
/etc/init.d/mysqld start
测试，关闭238上的mysql在另外一台机器上用vip连接mysql
关闭239上的mysql在另外一台机器上用vip连接mysql
作者“linux运维”