结合keepalived实现lvs的高可用群集故障自动转移

直上干活

dr1上keepalived的配置:

/etc/keepalived/keepalived.conf

global_defs {
                router_id LVS1          # 设置lvs的id，在一个网络内应该是唯一的
}
vrrp_sync_group test {           #设置vrrp组
        group {
        loadbalance
        }
}
vrrp_instance loadbalance {
        state MASTER       #设置lvs的状态，报错MASTER和BACKUP两种，必须大写
        interface eth0     #设置对外服务的接口
        lvs_sync_daemon_inteface eth0   #设置lvs监听的接口
        virtual_router_id 51                     #设置虚拟路由表示
        priority 180            #设置优先级，数值越大，优先级越高
        advert_int 1           #设置同步时间间隔
        authentication {                    #设置验证类型和密码
                auth_type PASS
                auth_pass 1111
                }
        virtual_ipaddress {
                192.168.56.200
        }
}
virtual_server 192.168.56.200 80 {
        delay_loop 6          #健康检查时间间隔
        lb_algo rr               #负载均衡调度算法
        lb_kind DR            #负载均衡转发规则
        #persistence_timeout 20  #设置会话保持时间，对bbs等很有用
        protocol TCP                #协议
        real_server 192.168.56.105 80 {
        weight 3                #设置权重
                TCP_CHECK {
                        connect_timeout 3
                        nb_get_retry 3
                        delay_before_retry 3
                        connect_port 80
                        }
                }
        real_server 192.168.56.106 80 {
                weight 3
                TCP_CHECK {
                        connect_timeout 3
                        nb_get_retry 3
                        delay_before_retry 3
                        connect_port 80
                }
        }
}

dr2上keepalived的配置

/etc/keepalived/keepalived.conf

global_defs {
        router_id LVS2
}
vrrp_sync_group test {
        group {
                loadbalance
        }
}
vrrp_instance loadbalance {
        state BACKUP
        interface eth0
        lvs_sync_daemon_inteface eth0
        virtual_router_id 51
        priority 150
        advert_int 1
        authentication {
                auth_type PASS
                        auth_pass 1111
                }
        virtual_ipaddress {
                192.168.56.200
        }
}
virtual_server 192.168.56.200 80 {
        delay_loop 6
        lb_algo rr
        lb_kind DR
        #persistence_timeout 20
        protocol TCP
        real_server 192.168.56.105 80 {
                weight 3
                TCP_CHECK {
                        connect_timeout 3
                        nb_get_retry 3
                        delay_before_retry 3
                        connect_port 80
                }
        }
        real_server 192.168.56.106 80 {
                weight 3
                TCP_CHECK {
                        connect_timeout 3
                        nb_get_retry 3
                        delay_before_retry 3
                        connect_port 80
                }
        }
}}

启动dr1上的keepalived

keepalived -f /etc/keepalived/keepalived.conf

查看信息

然后启动dr2上keepalived

keepalived -f /etc/keepalived/keepalived.conf

查看信息

在realserver1与realserver2上分别执行下面的脚本

/home/lhb/sh/rs.sh

#!/bin/bash
vip=192.168.56.200
ifconfig lo:0 $vip netmask 255.255.255.255
route add -host $vip dev lo:0
route -n
echo "1" >/proc/sys/net/ipv4/conf/lo/arp_ignore
echo "2" >/proc/sys/net/ipv4/conf/lo/arp_announce
echo "1" >/proc/sys/net/ipv4/conf/all/arp_ignore
echo "2" >/proc/sys/net/ipv4/conf/all/arp_announce
#sysctl -p  #查看sysctl的配置变化，可不执行