keepalived+LVS高可用Director Server

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RHEL6.6-x86-64
主要软件：
    keepalived-1.2.16.tar.gz
    ipvsadm-1.26-4.el6.x86_64.rpm

Master Directory Server :192.168.1.5
Backup Directory Server:192.168.1.8
Real Server 1 :192.168.1.6
Real Server 2 : 192.168.1.7
VIP: 192.168.1.10


编译安装keepalived

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# tar xf keepalived-1.2.16.tar.gz # cd keepalived-1.2.16 # ./configure --prefix=/usr/local/keepalived --sysconfdir=/etc # make # make install

编辑keepalived配置文件

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vim /etc/keepalived/keepalived.conf ! Configuration File for keepalived global_defs {    notification_email {    root@localhost    }    notification_email_from keepalived@localhost    smtp_server 127.0.0.1    smtp_connect_timeout 30    router_id LVS_DEVEL } vrrp_instance VI_1 {     state MASTER     interface eth1     virtual_router_id 51     priority 100     advert_int 1     authentication {         auth_type PASS         auth_pass 1111     }     virtual_ipaddress {         192.168.1.10/24 dev eth1 label eth1:0     } } virtual_server 192.168.1.10 80 {     delay_loop 6     lb_algo rr     lb_kind DR     nat_mask 255.255.255.0     #persistence_timeout 50     protocol TCP     sorry_server 127.0.0.1 80     real_server 192.168.1.6 80 {         weight 1         TCP_CHECK {             connect_timeout 3             nb_get_retry 3             delay_before_retry 3         }     }     real_server 192.168.1.7 80 {         weight 1         TCP_CHECK {             connect_timeout 3             nb_get_retry 3             delay_before_retry 3         }     } }

# yum install ivsadm

192.168.1.8主机中
安装keepalived同192.168.1.5
配置文件中：
    将“state MASTER" 改为 ”state BACKUP"

    将"priority 100"改为比100小的值，这里改为“priority 70".

# yum install ipvsadm


配置Real server

编写Real Server脚本

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#/bin/bash # Author xiaoming # mail: xiaoming.linux@gmail.com VIP=192.168.1.10 . /etc/init.d/functions case "$1" in     start)    echo "Start Real Server "    /sbin/ifconfig lo:0 $VIP broadcast $VIP netmask 255.255.255.255 up    route add -host $VIP dev lo:0    echo 1 > /proc/sys/net/ipv4/conf/eth1/arp_ignore    echo 1 > /proc/sys/net/ipv4/conf/all/arp_ignore    echo 2 > /proc/sys/net/ipv4/conf/eth1/arp_announce    echo 2 > /proc/sys/net/ipv4/conf/all/arp_announce    ;;      stop)     echo "Stop Real Server"     /sbin/ifconfig lo:0 down     route del $VIP     echo 0 > /proc/sys/net/ipv4/conf/eth1/arp_ignore     echo 0 > /proc/sys/net/ipv4/conf/all/arp_ignore     echo 0 > /proc/sys/net/ipv4/conf/all/arp_announce     echo 0 > /proc/sys/net/ipv4/conf/eth1/arp_announce    ;;     *)    echo "Usage: $0 {start|stop}"    exit 1 esac

分别在Real Server1和Real Server2上执行此脚本

配置完毕，分别在director server上启动keepalived服务，

查看LVS路由表信息

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# ipvsadm -Ln IP Virtual Server version 1.2.1 (size=4096) Prot LocalAddress:Port Scheduler Flags   -> RemoteAddress:Port           Forward Weight ActiveConn InActConn TCP  192.168.1.10:80 rr   -> 192.168.1.6:80               Route   1      0          0            -> 192.168.1.7:80               Route   1      0          0