LNMP+Tomcat+Keepalived+LVS 多端口负载均衡

应用场景：Keepalived+LVS高可+负载均衡集群架构中rs同时跑httpd（80端口）和Java（8080端口）服务，使用Keepalived负载均衡多个端口。如果想全部由80端口提供服务，则Keepalived+LVS负载均衡层就只开启80端口，内部节点使用nginx代理8080端口。

多端口负载均衡

[root@director sbin]# yum install -y keepalived

[root@Centos-1 sbin]# vim /etc/keepalived/keepalived.conf
vrrp_instance VI_1 {
    state BACKUP
    interface ens192
    virtual_router_id 51
    priority 100
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass password
    }
    virtual_ipaddress {
        192.168.14.13
    }
}
virtual_server 192.168.14.13 80 {
    delay_loop 10
    lb_algo wlc
    lb_kind DR
    persistence_timeout 180
    protocol TCP
    real_server 192.168.14.127 80 {
        weight 100
        TCP_CHECK {
        connect_timeout 10
        nb_get_retry 3
        delay_before_retry 3
        connect_port 80
        }
    }
    real_server 192.168.14.128 80 {
        weight 100
        TCP_CHECK {
        connect_timeout 10
        nb_get_retry 3
        delay_before_retry 3
        connect_port 80
        }
     }
     real_server 192.168.14.129 80 {
         weight 100
         TCP_CHECK {
         connect_timeout 10
         nb_get_retry 3
         delay_before_retry 3
         connect_port 80
         }
      }
}
virtual_server 192.168.14.13 8080 {
    delay_loop 10
    lb_algo wlc
    lb_kind DR
    persistence_timeout 180
    protocol TCP
    real_server 192.168.14.127 8080 {
        weight 100
        TCP_CHECK {
        connect_timeout 10
        nb_get_retry 3
        delay_before_retry 3
        connect_port 80
        }
    }
    real_server 192.168.14.128 8080 {
        weight 100
        TCP_CHECK {
        connect_timeout 10
        nb_get_retry 3
        delay_before_retry 3
        connect_port 80
        }
     }
     real_server 192.168.14.129 8080 {
         weight 100
         TCP_CHECK {
         connect_timeout 10
         nb_get_retry 3
         delay_before_retry 3
         connect_port 80
         }
      }
}

在dir2上执行同样的操作，lvs多端口负载均衡，需要注意的是dir2机器上state改为BACKUP，priority设为90。

nginx反向代理Tomcat

在rs上创建nginx代理虚拟主机，名为zrlog.conf，然后配置内容如下：

[root@128rs2 ~]# vim /usr/local/nginx/conf/vhosts/zrlog.conf
server {
    listen 80;
    server_name www.3zuzrlog.com;

location / {
    proxy_pass http://localhost:8080;
    proxy_redirect default;
    proxy_set_header Host   $host;
    proxy_set_header X-Real-IP      $remote_addr;
    proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    }

此时Keepalived+LVS只需监听80端口即可：

[root@Centos-1 sbin]# vim /etc/keepalived/keepalived.conf
vrrp_instance VI_1 {
    state BACKUP
    interface ens192
    virtual_router_id 51
    priority 100
    advert_int 1
    authentication {
        auth_type PASS
        auth_pass password
    }
    virtual_ipaddress {
        192.168.14.13
    }
}
virtual_server 192.168.14.13 80 {
    delay_loop 10
    lb_algo wlc
    lb_kind DR
    persistence_timeout 180
    protocol TCP
    real_server 192.168.14.127 80 {
        weight 100
        TCP_CHECK {
        connect_timeout 10
        nb_get_retry 3
        delay_before_retry 3
        connect_port 80
        }
    }
    real_server 192.168.14.128 80 {
        weight 100
        TCP_CHECK {
        connect_timeout 10
        nb_get_retry 3
        delay_before_retry 3
        connect_port 80
        }
     }
     real_server 192.168.14.129 80 {
         weight 100
         TCP_CHECK {
         connect_timeout 10
         nb_get_retry 3
         delay_before_retry 3
         connect_port 80
         }
      }
}

(adsbygoogle = window.adsbygoogle || []).push({});