VRRP（Virtual Router Redundancy Protocol）协议
网站: http://www.keepalived.org/
http://www.lvwnet.com/vince/linux/Keepalived-LVS-NAT-Director-ProxyArp-Firewall-HOWTO.html
http://www.keepalived.org/LVS-NAT-Keepalived-HOWTO.html
http://archive.linuxvirtualserver.org/html/lvs-users/2002-12/msg00189.html
http://www.linuxvirtualserver.org/docs/ha/keepalived.html
两台已经安装好Ubuntu的服务器
分别安装ssh以方便putty登录
neo@master:~$ sudo apt-get install ssh neo@slave:~$ sudo apt-get install ssh
install keepalived
neo@master:~$ apt-cache search lvs keepalived - Failover and monitoring daemon for LVS clusters neo@master:~$ sudo apt-get install keepalived
配置 keepalived.conf
neo@master:/etc/keepalived$ sudo touch keepalived.conf neo@master:/etc/keepalived$ sudo vi keepalived.conf
例 126.1. keepalived.conf
vrrp_sync_group VG1 {
group {
VI_1
VI_2
}
}
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 {
172.16.0.1
}
}
vrrp_instance VI_2 {
state MASTER
interface eth1
virtual_router_id 51
priority 100
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
172.18.1.254
}
}
virtual_server 172.16.0.1 80 {
delay_loop 6
lb_algo wlc
lb_kind NAT
persistence_timeout 600
protocol TCP
real_server 172.16.0.2 80 {
weight 100
TCP_CHECK {
connect_timeout 3
}
}
real_server 172.16.0.3 80 {
weight 100
TCP_CHECK {
connect_timeout 3
}
}
real_server 172.16.0.4 80 {
weight 100
TCP_CHECK {
connect_timeout 3
}
}
}
enable ip_forward
$ sudo sysctl -w net.ipv4.ip_forward=1
neo@master:~$ sysctl net.ipv4.ip_forward net.ipv4.ip_forward = 0
Starting keepalived
neo@master:/etc/keepalived$ sudo /etc/init.d/keepalived start Starting keepalived: keepalived.
![[注意]](http://www.netkiller.cn/graphics/note.png) |
virtual_ipaddress |
|---|---|
| virtual_ipaddress { 172.16.0.1/16 } 正常直接写IP即可.但在ubuntu中如果不写子网掩码,它会默认为172.16.0.1/32. |
原文出处：Netkiller 系列 手札
本文作者：陈景峯
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