keepalived：双主配置

• Master config

global_defs {
    
   router_id lb01  # keepalived 节点的唯一标识,建议设置为当前主机名
}

vrrp_instance VI_1 {
    
    state MASTER  # 当前角色
    interface enp0s3
    virtual_router_id 50
    priority 150  # 优先级
    advert_int 1
    authentication {
    
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
    
        10.0.2.3  # 虚拟 VIP
    }
vrrp_instance VI_2 {
    
    state BACKUP  # 当前角色
    interface enp0s3
    virtual_router_id 55
    priority 100  # 优先级
    advert_int 1
    authentication {
    
        auth_type PASS
        auth_pass 2222
    }
    virtual_ipaddress {
    
        10.0.2.4  # 虚拟 VIP
    }    
}

• Backup config

global_defs {
    
   router_id lb02  # keepalived 节点的唯一标识,建议设置为当前主机名
}

vrrp_instance VI_1 {
    
    state BACKUP  # 当前角色
    interface enp0s3
    virtual_router_id 50
    priority 100  # 优先级
    advert_int 1
    authentication {
    
        auth_type PASS
        auth_pass 1111
    }
    virtual_ipaddress {
    
        10.0.2.3  # 虚拟 VIP
    }
vrrp_instance VI_2 {
    
    state MASTER  # 当前角色
    interface enp0s3
    virtual_router_id 55
    priority 150  # 优先级
    advert_int 1
    authentication {
    
        auth_type PASS
        auth_pass 2222
    }
    virtual_ipaddress {
    
        10.0.2.4  # 虚拟 VIP
    }    
}