haproxy高可用以及双主模式(二)

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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 root@192.168.33.132:/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 -yhaproxy-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 {
    19872672@qq.com
   }
   notification_email_from root@localhost.com
   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 {
   19872672@qq.com
  }
  notification_email_from root@localhost.com
  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 eth0haproxy-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：192.168.33.150haproxy-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 {
    1987672@qq.com
   }
   notification_email_from root@localhost.com
   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 {
    1987672@qq.com
   }
   notification_email_from root@localhost.com
   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