haproxy主备
虚拟VIP：192.168.33.130
把haproxy-01的配置文件拷贝到haproxy-02机器相应的目录即可
root@haproxy-01 haproxy]# scp haproxy.cfg [email protected]:/etc/haproxy/ haproxy.cfg 100% 3520 3.4KB/s 00:00
启动haproxy-02服务
[root@haproxy-02 haproxy]# /etc/init.d/haproxy restart Stopping haproxy: [FAILED] Starting haproxy: [ OK ]
关于haproxy-02日志记录和haproxy-01记录方式一样
客户端访问haproxy-02的ip地址
安装keepalived
在haproxy机器上分别安装keepalived
[root@haproxy-01 ~]# yum install keepalived -y [root@haproxy-02 ~]# yum install keepalived -y
haproxy-01机器上keepalived配置文件内容如下
[root@haproxy-01 ~]# cat /etc/keepalived/keepalived.conf
global_defs {
notification_email {
[email protected]
}
notification_email_from [email protected]
smtp_server 127.0.0.1
smtp_connect_timeout 30
router_id LVS_MASTER
}
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 {
192.168.33.130
}
}
haproxy-02机器上keepalived配置文件内容如下
[root@haproxy-02 ~]# cat /etc/keepalived/keepalived.conf
global_defs {
notification_email {
[email protected]
}
notification_email_from [email protected]
smtp_server 127.0.0.1
smtp_connect_timeout 30
router_id LVS_BACKUP
}
vrrp_instance VI_1 {
state BACKUP
interface eth0
virtual_router_id 51
priority 90
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.33.130
}
}
分别在haproxy-01/02机器启动keepalived服务
[root@haproxy-01 ~]# /etc/init.d/keepalived start Starting keepalived: [ OK ] [root@haproxy-02 keepalived]# /etc/init.d/keepalived start Starting keepalived: [ OK ]
haproxy-01情况
[root@haproxy-01 ~]# ip a|grep 130 inet 192.168.33.130/32 scope global eth0
haproxy-02情况
[root@haproxy-02 ~]# ip a|grep 130
通过以上查看情况得知虚拟VIP在haproxy-01机器上
客户端访问虚拟VIP情况
通过访问得知，虚拟vip访问正常。轮询访问
模拟故障把haproxy-01机上的haproxy和keepalived服务停止
[root@haproxy-01 ~]# /etc/init.d/haproxy stop Stopping haproxy: [ OK ] [root@haproxy-01 ~]# /etc/init.d/keepalived stop Stopping keepalived: [ OK
在haproxy-02机器上查看虚拟VIP情况
[root@haproxy-02 ~]# ip a|grep 130 inet 192.168.33.130/32 scope global eth0
虚拟VIP已经漂移到haproxy-02机器上了
客户端访问虚拟VIP情况
haproxy-01机器查看keepalived剔除过程日志
haproxy-02机器查看keepalived切换获取VIP过程日志
以上就是haproxy+keepalived主备模式
haproxy+keepalived双主模式
增加虚拟VIP：192.168.33.150
haproxy-01机器虚拟VIP：192.168.33.130 haproxy-02机器虚拟VIP：192.168.33.150
haproxy-01机器上keepalived完整配置文件如下
[root@haproxy-01 ~]# cat /etc/keepalived/keepalived.conf
global_defs {
notification_email {
[email protected]
}
notification_email_from [email protected]
smtp_server 127.0.0.1
smtp_connect_timeout 30
router_id LVS_MASTER
}
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 {
192.168.33.130
}
}
vrrp_instance VI_2 {
state BACKUP
interface eth0
virtual_router_id 52
priority 90
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.33.150
}
}
haproxy-02器上keepalived完整配置文件如下
[root@haproxy-02 ~]# cat /etc/keepalived/keepalived.conf
global_defs {
notification_email {
[email protected]
}
notification_email_from [email protected]
smtp_server 127.0.0.1
smtp_connect_timeout 30
router_id LVS_BACKUP
}
vrrp_instance VI_1 {
state BACKUP
interface eth0
virtual_router_id 51
priority 90
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.33.130
}
}
vrrp_instance VI_2 {
state MASTER
interface eth0
virtual_router_id 52
priority 100
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.33.150
}
}
分别启动haproxy-01/02机器的haproxy和keepalived服务即可
haproxy-01机器情况如下
[root@haproxy-01 ~]# /etc/init.d/haproxy start Starting haproxy: [ OK ] [root@haproxy-01 ~]# /etc/init.d/keepalived start Starting keepalived: [ OK ]
haproxy-02机器情况如下
[root@haproxy-02 ~]# /etc/init.d/haproxy restart Stopping haproxy: [ OK ] Starting haproxy: [ OK ] [root@haproxy-02 ~]# /etc/init.d/keepalived restart Stopping keepalived: [ OK ] Starting keepalived: [ OK ]
查看haproxy-01机器虚拟VIP情况
[root@haproxy-01 ~]# ip a|grep 130 inet 192.168.33.130/32 scope global eth0
查看haproxy-02机器虚拟VIP情况
[root@haproxy-02 ~]# ip a|grep 33.150 inet 192.168.33.150/32 scope global eth0
客户端访问虚拟VIP情况如下
虚拟VIP:130访问情况
虚拟VIP:150访问情况
模拟故障，吧haproxy-01机器haproxy和keepalived服务down掉
[root@haproxy-01 ~]# /etc/init.d/haproxy stop Stopping haproxy: [ OK ] [root@haproxy-01 ~]# /etc/init.d/keepalived stop Stopping keepalived: [ OK ]
查看haproxy-01机器虚拟VIP情况
[root@haproxy-01 ~]# ip a|grep 130
查看haproxy-01机器日志情况
从上面日志中看出虚拟VIP:192.168.33.130已经剔除了
查看haproxy-02机器虚拟VIP情况
虚拟VIP已经漂移在haproxy-02机器上
查看haproxy-02机器上的日志 
客户端浏览器访问情况如下
虚拟VIP130
虚拟VIP150
以上就haproxy+keepalived双主模式，先这样吧