keepalived+lvs实现mysql集群读的操作(写类似)
1.首先安装lvsyum -y installpopt-static libnl libnl-develpopt-develkernel-devel
wget http://www.linuxvirtualserver.org/software/kernel-2.6/ipvsadm-1.26.tar.gz
ln -s /usr/src/kernels/2.6.32-358.2.1.el6.x86_64//usr/src/linux
tar zxvf ipvsadm-1.26.tar.gz
cd ipvsadm-1.26
make
make install
cd ..
2.安装keepalived.
参见本博客
http://kkkkkk.blog.运维网.com/blog/468162/1181684
3.配置keepalived配置文件
vi /etc/keepalived/keepalived.conf
global_defs {
notification_email {
aaaaa@test.com
}
notification_email_from aaaaa@test.com
smtp_server mail.test.com
smtp_connect_timeout 30
router_id LVS1
}
vrrp_sync_group test {
group {
loadbalance
}
}
vrrp_instance loadbalance {
state MASTER #备机修改为BACKUP
interface eth0
lvs_sync_daemon_inteface eth0
virtual_router_id 51
priority 180 #备机修改优先级150
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
8.8.8.8 dev eth0 label eth0:2
}
}
virtual_server 8.8.8.8 3306 {
delay_loop 6
lb_algo wrr #加权轮循
lb_kind DR #DR模式
#persistence_timeout 20
protocol TCP
real_server 8.8.8.6 3306 {
weight 3
TCP_CHECK {
connect_timeout 3
nb_get_retry 3
delay_before_retry 3
connect_port 3306
}
}
real_server 8.8.8.7 3306 {
weight 3
TCP_CHECK {
connect_timeout 3
nb_get_retry 3
delay_before_retry 3
connect_port 3306
}
}
}
4配置lvs 的real server
#!/bin/bash
#description : Start Real Server
VIP=8.8.8.8
. /etc/rc.d/init.d/functions
case "$1" in
start)
echo " Start LVSofReal Server"
/sbin/ifconfig lo:0 $VIP broadcast $VIP netmask 255.255.255.255 up
echo "1" >/proc/sys/net/ipv4/conf/lo/arp_ignore
echo "2" >/proc/sys/net/ipv4/conf/lo/arp_announce
echo "1" >/proc/sys/net/ipv4/conf/all/arp_ignore
echo "2" >/proc/sys/net/ipv4/conf/all/arp_announce
;;
stop)
/sbin/ifconfig lo:0 down
echo "close LVS Director server"
echo "0" >/proc/sys/net/ipv4/conf/lo/arp_ignore
echo "0" >/proc/sys/net/ipv4/conf/lo/arp_announce
echo "0" >/proc/sys/net/ipv4/conf/all/arp_ignore
echo "0" >/proc/sys/net/ipv4/conf/all/arp_announce
;;
*)
echo "Usage: $0 {start|stop}"
exit 1
esac
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