keepalived 主备安装配置

　　tar xf keepalived-1.1.19.tar.gz

　　cd keepalived-1.1.19

　　./configure --prefix=/opt/keepalived && make && make install

　　cp keepalived/etc/init.d/keepalived.sysconfig /etc/sysconfig/keepalived

　　cp keepalived/etc/init.d/keepalived.rh.init /etc/init.d/keepalived

　　chmod +x /etc/init.d/keepalived

　　ln -s /opt/keepalived/sbin/keepalived /sbin/keepalived

　　chkconfig --add keepalived

　　cp -a keepalived/etc/keepalived/ /etc/

　　vi /etc/keepalived/keepalived.conf

　　! Configuration File for keepalived

　　global_defs {

　　notification_email {

　　[email protected]

　　}

　　notification_email_from [email protected]

　　smtp_server 127.0.0.1

　　smtp_connect_timeout 30

　　router_id NX_LB

　　}

　　vrrp_instance VI_1 {

　　state BACKUP  #两个都需要用BACKUP，用priority区别主辅

　　interface eth0

　　virtual_router_id 51

　　priority 100  #优先级

　　mcast_src_ip 10.10.81.100   #主/辅IP

　　advert_int 1  #主/辅check间隔时间

　　nopreempt   #主机上用，如果切换后主机起来不再切换

　　authentication {

　　auth_type PASS

　　auth_pass 55555

　　}

　　virtual_ipaddress {

　　XX.XX.XX.XX/24 dev eth0 scope global

　　}

　　}