haproxy+keepalived(主主模式)實現高可用環境的簡單配置

參考：haproxy+keepalived(主從模式)實現高可用環境的簡單配置     https://blog.51cto.com/sf1314/2357735 

主主模式就是需要兩個VIP,即兩個haproxy節點都同時在提供服務,

當有一個haproxy掛掉後,它的vip資源就會漂到另一個haproxy節點上(此時它將有兩個vip都在提供服務),故障轉移無感知.

[root@Haproxy_Keepalived_Master ~]# vim /etc/keepalived/keepalived.conf

! Configuration File for keepalived

global_defs {

  notification_email {

    root@localhost

    }

 

notification_email_from keepalived@localhost

smtp_server 127.0.0.1

smtp_connect_timeout 30

router_id HAproxy237

}

 

vrrp_script chk_haproxy {                                   #HAproxy 服務監控腳本                    

  script "/etc/keepalived/check_haproxy.sh"

  interval 2

  weight 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

}

  track_script {

    chk_haproxy

}

virtual_ipaddress {

    182.148.15.239

}

notify_master "/etc/keepalived/clean_arp.sh 182.148.15.239"

}

vrrp_instance VI_2 {

  state BACKUP

  interface eth0

  virtual_router_id 52

  priority 99

  advert_int 1

  authentication {

    auth_type PASS

    auth_pass 1111

}

virtual_ipaddress {

  182.148.15.235

}

notify_master "/etc/keepalived/clean_arp.sh 182.148.15.235"

}

  

3）Haproxy_Keepalived_Backup服務器上的Keepalived配置如下：

[root@Haproxy_Keepalived_Backup ~]# /etc/keepalived/keepalived.conf /etc/keepalived/keepalived.conf-bak

[root@Haproxy_Keepalived_Backup ~]# vim /etc/keepalived/keepalived.conf

! Configuration File for keepalived

global_defs {

  notification_email {

    root@localhost

    }

 

notification_email_from keepalived@localhost

smtp_server 127.0.0.1

smtp_connect_timeout 30

router_id HAproxy236

}

 

vrrp_script chk_haproxy {                            

  script "/etc/keepalived/check_haproxy.sh"

  interval 2

  weight 2

}

 

vrrp_instance VI_1 {

  state BACKUP

  interface eth0

  virtual_router_id 51

  priority 99

  advert_int 1

  authentication {

    auth_type PASS

    auth_pass 1111

}

  track_script {

    chk_haproxy

}

virtual_ipaddress {

    182.148.15.239

}

notify_master "/etc/keepalived/clean_arp.sh 182.148.15.239"

}

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 {

  182.148.15.235

}

notify_master "/etc/keepalived/clean_arp.sh 182.148.15.235"

}