keepalived+nginx

! Configuration File for keepalived
global_defs {
notification_email {
root@localhost
}
notification_email_from keep@localhost
smtp_server 127.0.0.1
smtp_connect_timeout 30
router_id LVS_DEVEL
}
#定义脚本，检测nginx。当nginx进程不存在时，权重-2，每秒检测一次。
vrrp_script chk_nginx {
script "killall -0 nginx"
interval 1
weight -2
}
#定义脚本，当存在/etc/keepalived/down文件时，权重-2，每秒检测一次，这个脚本可以安装时测试
vrrp_script chk_keepalived {
script "[ -e /etc/keepalived/down ] && exit 1 || exit 0"
interval 1
weight -2
}
vrrp_instance VI_1 {
state MASTER    #定义初始主从状态
interface eth0  #定义VIP绑定网卡
virtual_router_id 51  #虚拟路由id，相同id为相同组
priority 101    #定义权重
advert_int 1    #定义检测时间
authentication {
auth_type PASS
auth_pass 1111
}
track_script {
chk_nginx
chk_keepalived
}
virtual_ipaddress {
172.16.30.33   #虚拟IP
}
}

! Configuration File for keepalived
global_defs {
notification_email {
root@localhost
}
notification_email_from keep@localhost
smtp_server 127.0.0.1
smtp_connect_timeout 30
router_id LVS_DEVEL
}
#定义脚本，检测nginx。当nginx进程不存在时，权重-2，每秒检测一次。
vrrp_script chk_nginx {
script "killall -0 nginx"
interval 1
weight -2
}
#定义脚本，当存在/etc/keepalived/down文件时，权重-2，每秒检测一次，这个脚本可以安装时测试
vrrp_script chk_keepalived {
script "[ -e /etc/keepalived/down ] && exit 1 || exit 0"
interval 1
weight -2
}
vrrp_instance VI_1 {
state SLAVE    #定义初始主从状态
interface eth0  #定义VIP绑定网卡
virtual_router_id 51  #虚拟路由id，相同id为相同组
priority 100    #定义权重
advert_int 1    #定义检测时间
authentication {
auth_type PASS
auth_pass 1111
}
track_script {
chk_nginx
chk_keepalived
}
virtual_ipaddress {
172.16.30.33   #虚拟IP
}
}