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Keepalived 双实例双主模式配置
一、环境
A 业务在 lb01 上是主模式，在 lb02 上是备模式
B 业务在 lb01 上是备模式，在 lb02 上是主模式
| Hostname | IP | 说明 |
| lb01 | 192.168.123.101 | VIP ：192.168.123.100 ( 用于绑定 A 服务 www.abc.com 域名 ) |
| lb02 | 192.168.123.102 | VIP ：192.168.123.200 ( 用于绑定 B 服务 bbs.abc.com 域名) |
二、配置
[root@lb01 ~]# cat /etc/keepalived/keepalived.conf ! Configuration File for keepalived global_defs { notification_email { 1054890557@qq.com } notification_email_from Alexandre.Cassen@firewall.loc smtp_server 127.0.0.1 smtp_connect_timeout 30 router_id lb01 }vrrp_instance VI_1 { state MASTER interface eth0 virtual_router_id 55 priority 150 advert_int 1 authentication { auth_type PASS auth_pass 1111 } virtual_ipaddress { 192.168.123.100/24 dev eth0 label eth0:1 }}vrrp_instance VI_2 { state BACKUP interface eth0 virtual_router_id 56 priority 100 advert_int 1 authentication { auth_type PASS auth_pass 1111 } virtual_ipaddress { 192.168.123.200/24 dev eth0 label eth0:2 }}
[root@lb02 ~]# cat /etc/keepalived/keepalived.conf! Configuration File for keepalived global_defs { notification_email { 1054890557@qq.com } notification_email_from Alexandre.Cassen@firewall.loc smtp_server 127.0.0.1 smtp_connect_timeout 30 router_id lb02 }vrrp_instance VI_1 { state BACKUP interface eth0 virtual_router_id 55 priority 100 advert_int 1 authentication { auth_type PASS auth_pass 1111 } virtual_ipaddress { 192.168.123.100/24 dev eth0 label eth0:1 }}vrrp_instance VI_2 { state MASTER interface eth0 virtual_router_id 56 priority 150 advert_int 1 authentication { auth_type PASS auth_pass 1111 } virtual_ipaddress { 192.168.123.200/24 dev eth0 label eth0:2 }}[root@lb01 ~]# /etc/init.d/keepalived restart # 查看 lb01 上的主服务器
[root@lb01 ~]# ip addr | egrep "192.168.123.100|192.168.123.200"
inet 192.168.123.100/24 scope global secondary eth0:1
[root@lb02 ~]# /etc/init.d/keepalived restart # 查看 lb02 上的主服务器[root@lb02 ~]# ip addr | egrep "192.168.123.100|192.168.123.200" inet 192.168.123.200/24 scope global secondary eth0:2[root@lb01 ~]# /etc/init.d/keepalived stop # 停掉 lb01 看会不会切换到 lb02
[root@lb02 ~]# ip addr | egrep "192.168.123.100|192.168.123.200"
inet 192.168.123.200/24 scope global secondary eth0:2
inet 192.168.123.100/24 scope global secondary eth0:1
[root@lb01 ~]# /etc/init.d/keepalived start # 再次启动看会不会切换回来[root@lb01 ~]# ip addr | egrep "192.168.123.100|192.168.123.200" inet 192.168.123.100/24 scope global secondary eth0:1
Keepalived 双实例双主模式配置
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