MYSQL双主高可用方案部署实例
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king01与king02互为master-slave
[[email protected] ~]# mysql -uroot -pabcd.1234
mysql> show slave status\G;
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.130.202
Master_User: repl
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000004
Read_Master_Log_Pos: 120
Relay_Log_File: relay-bin.000012
Relay_Log_Pos: 283
Relay_Master_Log_File: mysql-bin.000004
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
。。。。。。。
[[email protected] ~]# mysql -uroot -pabcd.1234
mysql> show slave status\G;
*************************** 1. row ***************************
Slave_IO_State: Waiting for master to send event
Master_Host: 192.168.1.201
Master_User: repl
Master_Port: 3306
Connect_Retry: 60
Master_Log_File: mysql-bin.000009
Read_Master_Log_Pos: 120
Relay_Log_File: relay-bin.000013
Relay_Log_Pos: 283
Relay_Master_Log_File: mysql-bin.000009
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
。。。。。。。
king01安装keepalived
[[email protected] ~]# yum install -y libnl libnl-devel
[[email protected] ~]# cd /usr/local/src
[[email protected] src]# tar zxvf keepalived-1.2.19.tar.gz
[[email protected] src]# cd keepalived-1.2.19
[[email protected] keepalived-1.2.19]# ./configure --sysconf=/etc --with-kernel-dir=/usr/src/kernels/2.6.32-431.el6.x86_64
[[email protected] keepalived-1.2.19]# make && make install
[[email protected] keepalived-1.2.19]# ln -s /usr/local/sbin/keepalived /sbin/
[[email protected] ~]# chkconfig --add keepalived
[[email protected] ~]# chkconfig --level 35 keepalived on
[[email protected] ~]# chkconfig --list |grep keepalived
keepalived 0:off 1:off 2:off 3:on 4:off 5:on 6:off
[[email protected] ~]# vi /etc/keepalived/keepalived.conf
! Configuration File for keepalived
global_defs {
notification_email {
}
notification_email_from [email protected]
smtp_server 192.168.200.15
smtp_connect_timeout 30
router_id king01
}
vrrp_script check_mysql {
script "/usr/local/mysql/scripts/check_mysql.sh"
interval 2
}
vrrp_instance v01 {
state BACKUP
interface eth0
virtual_router_id 200
priority 100
advert_int 1
nopreempt
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.1.200
}
track_script {
check_mysql
}
}
[[email protected] ~]# vi /usr/local/mysql/scripts/check_mysql.sh
#!/bin/bash
MYSQL=/usr/local/mysql/bin/mysql
MYSQL_HOST=localhost
MYSQL_USER=root
MYSQL_PASSWORD=abcd.1234
$MYSQL -h $MYSQL_HOST -u $MYSQL_USER -p$MYSQL_PASSWORD -e "show status;" >/dev/null 2>&1
if [ $? == 0 ]
then
echo " $host mysql login successfully "
exit 0
else
echo " $host mysql login faild"
exit 1
fi
[[email protected] ~]# chmod a+x /usr/local/mysql/scripts/check_mysql.sh
[[email protected] ~]# service keepalived start
Starting keepalived: [ OK ]
[[email protected] ~]# ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 16436 qdisc noqueue state UNKNOWN
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000
link/ether 08:00:27:2b:d6:17 brd ff:ff:ff:ff:ff:ff
inet 192.168.1.201/24 brd 192.168.130.255 scope global eth0
inet 192.168.1.200/32 scope global eth0
inet6 fe80::a00:27ff:fe2b:d617/64 scope link
valid_lft forever preferred_lft forever
[[email protected] ~]# tail -n 100 /var/log/messages
Feb 23 05:09:08 king01 Keepalived_vrrp[11671]: VRRP_Instance(v01) Transition to MASTER STATE
Feb 23 05:09:09 king01 Keepalived_vrrp[11671]: VRRP_Instance(v01) Entering MASTER STATE
Feb 23 05:09:09 king01 Keepalived_vrrp[11671]: VRRP_Instance(v01) setting protocol VIPs.
Feb 23 05:09:09 king01 Keepalived_vrrp[11671]: VRRP_Instance(v01) Sending gratuitous ARPs on eth0 for 192.168.1.200
Feb 23 05:09:09 king01 Keepalived_healthcheckers[11670]: Netlink reflector reports IP 192.168.1.200 added
Feb 23 05:09:14 king01 Keepalived_vrrp[11671]: VRRP_Instance(v01) Sending gratuitous ARPs on eth0 for 192.168.1.200
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