配置样例

```shell
! Configuration File for keepalived

global_defs {
   router_id osa_2021
}

vrrp_instance osa_2021 {
    state MASTER
    interface ens32
    virtual_router_id 21
    priority 120
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass p@ssw0rd!
    }
    virtual_ipaddress {
        172.18.13.80/24 dev ens32 label ens32:1
    }
}

! http配置
virtual_server 172.18.13.80 80 {
    delay_loop 6
    lb_algo rr
    lb_kind NAT
    persistence_timeout 50
    protocol TCP

real_server 172.18.13.81 80 {
        weight 1
        HTTP_GET {
            url {
              path /nginx_status/
              status_code 200
            }
            connect_timeout 3
            nb_get_retry 3
            delay_before_retry 3
        }
    }

real_server 172.18.13.82 80 {
        weight 1
        HTTP_GET {
            url {
              path /nginx_status/
              status_code 200
            }
            connect_timeout 3
            nb_get_retry 3
            delay_before_retry 3
        }
    }
}

! https配置
virtual_server 172.18.13.80 443 {
    delay_loop 6
    lb_algo rr
    lb_kind NAT
    persistence_timeout 50
    protocol TCP

real_server 172.18.13.81 443 {
        weight 1
        SSL_GET {
            url { 
              path /
              status_code 200 
            }
            connect_timeout 3
            nb_get_retry 3
            delay_before_retry 3
        }
    }

real_server 172.18.13.82 443 {
        weight 1
        SSL_GET {
            url {
              path /
              status_code 200
            }
            connect_timeout 3
            nb_get_retry 3
            delay_before_retry 3
        }
    }
}

！ tcp 1234 配置
virtual_server 172.18.13.80 1234 {
    delay_loop 6
    lb_algo rr
    lb_kind NAT
    persistence_timeout 50
    protocol TCP

real_server 172.18.13.81 1234 {
        weight 1
        TCP_CHECK {
            connect_port 1234
            connect_timeout 6
            nb_get_retry 3
            delay_before_retry 3
        }
    }
}
```