测试 keepalived 的 master/backup

作者佚名技术来源 Linux系统浏览发布时间 2012-03-30

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
二测试双 backup ;vrrp_script 和 track_script
0 环境
vip 192.168.56.30
server a 192.168.56.10
server b 192.168.56.20
keepalived-1.1.20

1 配置文件
server a 192.168.56.10
global_defs {
router_id LVS_DEVEL
}

vrrp_script check_run {
script "/root/1.sh"
}

vrrp_instance VI_1 {
state BACKUP #两台配置此处均是 BACKUP
interface eth1
virtual_router_id 51
priority 100 #优先级,另一台改为 90
advert_int 1
nopreempt #不抢占,只在优先级高的机器上设置即可,优先级低的机器不设置
authentication {
auth_type PASS
auth_pass 1111
}

track_script {
check_run
}

virtual_ipaddress {
192.168.56.30
}
}

server b 192.168.56.20
global_defs {
router_id LVS_DEVEL
}

vrrp_script check_run {
script "/root/1.sh"
}

vrrp_instance VI_1 {
state BACKUP
interface eth1
virtual_router_id 51
priority 90 #优先级为 90
advert_int 1
#无抢占设置 nopreempt
authentication {
auth_type PASS
auth_pass 1111
}

track_script {
check_run
}

virtual_ipaddress {
192.168.56.30
}
}

2 测试
a 查看日志
master server a 192.168.56.10
ay 28 19:43:11 master Keepalived_vrrp: VRRP_Instance(VI_1) Entering MASTER STATE
May 28 19:43:11 master Keepalived_vrrp: VRRP_Instance(VI_1) setting protocol VIPs.
May 28 19:43:11 master Keepalived_vrrp: VRRP_Instance(VI_1) Sending gratuitous ARPs on eth1 for 192.168.56.30

slave server b 192.168.56.20
May 28 19:44:53 slave Keepalived_vrrp: VRRP_Instance(VI_1) Entering BACKUP STATE
May 28 19:44:53 slave Keepalived_vrrp: VRRP sockpool: [ifindex(3), proto(112), fd(9,10)]

b 关掉 server a keepalived
server b 日志
May 28 19:58:27 slave Keepalived_vrrp: VRRP_Instance(VI_1) Entering MASTER STATE
May 28 19:58:27 slave Keepalived_vrrp: VRRP_Instance(VI_1) setting protocol VIPs.
May 28 19:58:27 slave Keepalived_vrrp: VRRP_Instance(VI_1) Sending gratuitous ARPs on eth1 for 192.168.56.30

访问 vip 192.168.56.30
curl http://192.168.56.30 #显示 ip 192.168.56.20
<html><body><h1>Ip 192.168.56.20 It works!</h1></body></html>

c 再次开启 server a keepalived
server a 日志
May 28 20:23:45 master Keepalived_vrrp: VRRP_Instance(VI_1) Entering BACKUP STATE
May 28 20:23:45 master Keepalived_vrrp: VRRP sockpool: [ifindex(3), proto(112), fd(9,10)]

访问 vip 192.168.56.30
curl http://192.168.56.30 #仍然显示 ip 192.168.56.20
<html><body><h1>Ip 192.168.56.20 It works!</h1></body></html>

d 关掉 server b keepalived
server a 日志
May 28 20:37:07 master Keepalived_vrrp: VRRP_Instance(VI_1) Entering MASTER STATE
May 28 20:37:07 master Keepalived_vrrp: VRRP_Instance(VI_1) setting protoc

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