通過keepalived搭建LVS高可用集群

通過keepalived搭建lvs高可用集群

實驗環境：

主director server 192.168.163.3

備director server 192.168.163.4

real server1 192.168.163.5

real server2 192.168.163.6

vip 192.168.163.100

四個節點上都安裝上webserver：

#yum -y install httpd

keepalived官網：

1.原始碼安裝：

安裝lvs

#tar -zxvf ipvsadm-1.24.tar.gz #cd ipvsadm-1.24 #make #make install

安裝keepalived

#tar -zxvf keepalived-1.1.19.tar.gz #cd keepalived-1.1.19 #./configure --sysconf=/etc --with-kerner-dir=/usr/src/kernels/2.6.18-8.el5-i686 #make #make install

2.yum源安裝：

#yum -y install ipvsadm #yum -y install keepalived

編輯keepalived的配置檔案（/etc/keepalived/keepalived.conf）主要由3部分組成，分別為全域性定義，vrrp例項定義，虛擬伺服器定義

#全域性定義 global_defs #設定郵件傳送位址 notification_email_from keepalived@localhost #設定smtp server位址 smtp_server 127.0.0.1 #設定smtp server連線超時時間 smtp_connect_timeout 30 #表示執行keepalived伺服器的乙個標識 router_id lvs_devel }#完成keepalived的手動切換 vrrp_script chk_schedown #vrrp例項定義 vrrp_instance vi_1 virtual_ipaddress track_script }#虛擬伺服器定義 virtual_server 192.168.163.100 80 connect_timeout 3 #設定連線超時時間 nb_get_retry 3 #設定重試次數 delay_before_retry 3 #設定重試間隔 } } real_server 192.168.163.6 80 connect_timeout 3 nb_get_retry 3 delay_before_retry 3 }

}}

在real server上編寫指令碼完成vip設定和節點的配置（/etc/init.d/lvsrs）

#!/bin/bash
## script to start lvs dr real server.
# chkconfig: - 90 10
# description: lvs dr real server
#.  /etc/rc.d/init.d/functions
vip=192.168.163.100
host=`/bin/hostname`
case "$1" in
start)
# start lvs-dr real server on this machine.
/sbin/ifconfig lo down
/sbin/ifconfig lo up
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
/sbin/ifconfig lo:0 $vip broadcast $vip netmask 255.255.255.255 up
/sbin/route add -host $vip dev lo:0
;;stop)
# stop lvs-dr real server loopback device(s).
/sbin/ifconfig lo:0 down
echo 0 > /proc/sys/net/ipv4/conf/lo/arp_ignore
echo 0 > /proc/sys/net/ipv4/conf/lo/arp_announce
echo 0 > /proc/sys/net/ipv4/conf/all/arp_ignore
echo 0 > /proc/sys/net/ipv4/conf/all/arp_announce	;;
status)
# status of lvs-dr real server.
islothere=`/sbin/ifconfig lo:0 | grep $vip`
isrothere=`netstat -rn | grep "lo:0" | grep $vip`
if [ ! "$islothere" -o ! "isrothere" ];then
# either the route or the lo:0 device
# not found.
echo "lvs-dr real server stopped."
else
echo "lvs-dr real server running."
fi	;;*)
# invalid entry.
echo "$0: usage: $0 "
exit 1
;;esac

啟動keepalived+lvs集群系統

在主備director server上啟動keepalived服務

#service keepalived start

在兩個real server上啟動real server的配置指令碼

#service lvsrs start

在四個節點啟動httpd服務

通過keepalived搭建LVS高可用集群

keepalived 主從搭建

LVS DR模式搭建與keepalived LVS

KeepAlived集群高可用搭建

通過keepalived搭建LVS高可用集群

keepalived 主從搭建

LVS DR模式搭建與keepalived LVS

KeepAlived集群高可用搭建

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