keepalived双主多实例

最新推荐文章于 2025-07-11 09:45:00 发布

原创最新推荐文章于 2025-07-11 09:45:00 发布 · 5k 阅读

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CC 4.0 BY-SA版权

本文介绍了一种使用Keepalived实现双主热备的配置方案，通过设置两个物理机作为主备节点，各自拥有一个虚拟IP地址，确保高可用性和负载均衡。详细展示了配置文件的具体内容。

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keepalived双主即在配置文件中加入第二个虚拟IP
物理机A:192.168.202.101
物理机B:192.168.202.102
VIP1：192.168.202.29（MASTER物理机A）
VIP2：192.168.202.30（MASTER物理机B）
物理机A：

! Configuration File for keepalived

global_defs { 
   notification_email {
    49000448@qq.com
   }
   notification_email_from Alexandre.Cassen@firewall.loc
   smtp_server 127.0.0.1
   smtp_connect_timeout 30
   router_id LVS_3
}

vrrp_instance VI_1 {
    state MASTER            
    interface eno16777736
    virtual_router_id 51
    priority 150              
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
      192.168.202.29/24 
    }
}

virtual_server 192.168.202.29 80 {
    delay_loop 6            
    lb_algo wrr                
    lb_kind DR                
    nat_mask 255.255.255.0
    persistence_timeout 50     
    protocol TCP                

    real_server 192.168.202.103 80 {
        weight 1              
        TCP_CHECK {
        connect_timeout 8       
        nb_get_retry 3
        delay_before_retry 3
        connect_port 80
        }
    }

    real_server 192.168.202.104 80 {
        weight 1              
        TCP_CHECK {
        connect_timeout 8       
        nb_get_retry 3
        delay_before_retry 3
        connect_port 80
        }
    }
}
vrrp_instance VI_2 {        #只是在这里额外添加了一个模块
    state BACKUP            
    interface eno16777736
    virtual_router_id 52
    priority 100              
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
      192.168.202.30/24 
    }
}

virtual_server 192.168.202.30 80 {
    delay_loop 6            
    lb_algo rr                
    lb_kind DR                
    nat_mask 255.255.255.0
    persistence_timeout 50     
    protocol TCP                

    real_server 192.168.202.103 80 {
        weight 1              
        TCP_CHECK {
        connect_timeout 8       
        nb_get_retry 3
        delay_before_retry 3
        connect_port 80
        }
    }

    real_server 192.168.202.104 80 {
        weight 1              
        TCP_CHECK {
        connect_timeout 8       
        nb_get_retry 3
        delay_before_retry 3
        connect_port 80
        }
    }
}

物理机B：

! Configuration File for keepalived

global_defs {
   notification_email {
    49000448@qq.com
   }
   notification_email_from Alexandre.Cassen@firewall.loc
   smtp_server 127.0.0.1
   smtp_connect_timeout 30
   router_id LVS_3
}

vrrp_instance VI_1 {
    state BACKUP        
    interface eno16777736
    virtual_router_id 51
    priority 150              
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
      192.168.202.29/24 
    }
}

virtual_server 192.168.202.29 80 {
    delay_loop 6            
    lb_algo wrr                
    lb_kind DR                
    nat_mask 255.255.255.0
    persistence_timeout 50     
    protocol TCP                

    real_server 192.168.202.103 80 {
        weight 1              
        TCP_CHECK {
        connect_timeout 8       
        nb_get_retry 3
        delay_before_retry 3
        connect_port 80
        }
    }

    real_server 192.168.202.104 80 {
        weight 1              
        TCP_CHECK {
        connect_timeout 8       
        nb_get_retry 3
        delay_before_retry 3
        connect_port 80
        }
    }
}
vrrp_instance VI_2 {
    state MASTER            
    interface eno16777736
    virtual_router_id 52
    priority 150              
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
      192.168.202.30/24 
    }
}

virtual_server 192.168.202.30 80 {
    delay_loop 6            
    lb_algo rr                
    lb_kind DR                
    nat_mask 255.255.255.0
    persistence_timeout 50     
    protocol TCP                

    real_server 192.168.202.103 80 {
        weight 1              
        TCP_CHECK {
        connect_timeout 8       
        nb_get_retry 3
        delay_before_retry 3
        connect_port 80
        }
    }

    real_server 192.168.202.104 80 {
        weight 1              
        TCP_CHECK {
        connect_timeout 8       
        nb_get_retry 3
        delay_before_retry 3
        connect_port 80
        }
    }
}