Keepalived 单纯的IP漂移更简单。
Heartbeat 对资源服务控制，更适合 存储的高可用。
Keepalived安装
yum install keepalived -y
rpm -qa keepalived
启动停止
/etc/init.d/keepalived start
/etc/init.d/keepalived stop
配置文件：
主配置文件
/etc/keepalived/keepalived.conf
! Configuration File for keepalived
global_defs {
notification_email {
jeff@yunqichina.com
}
notification_email_from Alexandre.Cassen@firewall.loc
smtp_server 192.168.200.1
smtp_connect_timeout 30
router_id LVS_01
}
vrrp_instance VI_1 {
state MASTER
interface eth0
virtual_router_id 51
priority 150
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.100.222/24
}
}
主配置VIP地址：
ip addr add 192.168.100.222/24 dev eth0
备配置文件
/etc/keepalived/keepalived.conf
! Configuration File for keepalived
global_defs {
notification_email {
jeff@yunqichina.com
}
notification_email_from Alexandre.Cassen@firewall.loc
smtp_server 192.168.200.1
smtp_connect_timeout 30
router_id LVS_02
}
vrrp_instance VI_1 {
state MASTER
interface eth0
virtual_router_id 51
priority 100
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.100.222/24
}
}
keepalived 只对服务器接管
一个网段多组keepalived 时使用多播地址：
global_defs {
router_id LVS_19
vrrp_mcast_group4 224.0.0.19 #<==这个就是指定多播地址的配置
}
当Nginx停止自动停止keepalived 服务脚本
mkdir -p /server/scripts
cd /server/scripts
ll
vim check_web.sh
#!/bin/sh
while true
if [~ps -er | grep nginx |grep -v grep| wc -l ~ -lt 3 ]
then /etc/init.d/keepalived stop
fi
sleep 10
done
后台执行
sh check_web.sh &