Keepalived+lvs-DR
Client eth0:192.168.0.100/24
Director master eth0 192.168.0.110/24
Director backup eth0: 192.168.0.111/24
VIP eth0:1 192.168.0.130/32
Real Server A eth0 192.168.0.115/24
Real Server B eth0:192.168.0.109/24
在Directormaster上安裝配置Keepalived
# tar xf keepalived-1.2.1.tar.gz
# cd keepalived-1.2.1
# ./configure --prefix=/--mandir=/usr/local/share/man/
# make
# make install
# cd /etc/keepalived/
# vim keepalived.conf
! Configuration File for keepalived
global_defs {
notification_email{
root@localhost
}
notification_email_fromkeepalived@localhost
smtp_server127.0.0.1
smtp_connect_timeout30
router_idDirector1
}
vrrp_instance VI_1 {
stateMASTER
interfaceeth0
virtual_router_id51
priority150
advert_int1
authentication{
auth_typePASS
auth_pass1111
virtual_ipaddress{
192.168.0.130/32dev eth0:0
virtual_server 192.168.0.130 80 { #LVS 配置
delay_loop3
lb_algorr #LVS排程算法
lb_kindDR #LVS叢集模式
nat_mask255.255.255.255
protocolTCP
real_server192.168.0.109 80 {
weight1
TCP_CHECK{
connect_timeout3
}
real_server192.168.0.115 80 {
}
# scp keepalived.conf 192.168.0.111:/etc/keepalived/
拷貝後,修改配置檔案
stateBACKUP
priority100
兩個Director上啟動服務:
# service keepalived start
關閉防火牆和selinux
#service iptables stop
#service ip6tables stop
#setenforce 0
修改核心有關ARP解析和路由轉發的
# 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
# echo 1 > /proc/sys/net/ipv4/ip_forward
vip
# ifconfigeth0:0 192.168.0.130 netmask 255.255.255.255 broadcast 192.168.0.130 up
# route add-host 192.168.0.130 dev eth0:0
使用ipvsadm指令設定RS
# ipvsadm -C
# ipvsadm -A -t192.168.0.130:80 -s rr
# ipvsadm -a -t192.168.0.130:80 -r 192.168.0.109:80 -g
# ipvsadm -a -t192.168.0.130:80 -r 192.168.0.115:80 -g
# serviceipvsadm save #儲存相關設定
ipvsadm: SavingIPVS table to /etc/sysconfig/ipvsadm: [确定]
# serviceipvsadm restart #重新開機服務,自動加載以上儲存的設定
Director backup 配置和Director master的一樣隻有一個地方不一樣
# vim /etc/keepalived/keepalived.conf
Real Server A 和 Real Server B
#serviceiptables stop
#serviceip6tables stop
#setenforce 0
關閉核心的ARP解析功能
配置虛拟IP
# ifconfig lo:0192.168.0.130 netmask 255.255.255.255 broadcast 192.168.0.130 up #VIP
# route add-host 192.168.0.130 dev lo:0 #加一條主機路由表項
配置index.html
2個server配置的一樣
如何測試
1.先用client 通路虛拟IP 看看不停地重新整理能否看到 2個server的頁面說明可以排程
2.把master 關機看看keepalived 管不管用看下日志你會發現有新日志産生這時候再用client再去通路虛拟IP 應該還是可以看到2個server的頁面
3.再把其中的一個server 關機然後繼續用client 去通路虛拟IP 你會發現頁面不在變化隻看到剩下的一個server的頁面了
本文轉自潘闊 51CTO部落格,原文連結:http://blog.51cto.com/pankuo/1389476,如需轉載請自行聯系原作者