LVS_DR+Keepalived实践
一.实践环境
三台服务器，一台做lvs+keepalived，两台是lvs_web,因为只有三台机器环境测试所以lvs+keepalived没有做heartbeat来做备份
LVS+keepalived -----------------192.168.2.17
Lvs_web01------------------------192.168.2.165
Lvs_web02------------------------192.168.2.166
Web_vip---------------------------192.168.2.190
二．安装步骤
1．http://www.keepalived.org/software/keepalived-1.1.15.tar.gz
# tar zxvf keepalived-1.1.15.tar.gz# 解压缩keepalived包 #
# cd keepalived-1.1.15
# ./configure
# 最好按照默认配置参数不要指定prefix，可能会出现问题 #
# make && make install# 编译并安装 #
# find / -name keepalived# 查看keepalived位置 #
3. 配置keepalived:
# pwd
/usr/local/etc/keepalived# keepalived配置文件的路径 #
# ll keepalived.conf
-rw-r--r-- 1 root root 1627 Aug 16 09:13 keepalived.conf# keepalived配置文件名 #
# more keepalived.conf
! Configuration File for keepalived
global_defs {
# notification_email {
# acassen@firewall.loc
# failover@firewall.loc
# sysadmin@firewall.loc
# }
# notification_email_from Alexandre.Cassen@firewall.loc
# smtp_server 192.168.200.1
# smtp_connect_timeout 30
router_id LVS_DEVEL
}
# 2008-08-19 by hjw
# VIP1
vrrp_instance VI_1 {
state MASTER
interface eth0
virtual_router_id 51
priority 200
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.2.190
# 192.168.1.220
}
}
virtual_server 192.168.2.190 80 {
delay_loop 6
lb_algo wlc
lb_kind DR
persistence_timeout 50
protocol TCP
real_server 192.168.2.165 80 {
weight 1
TCP_CHECK {
connect_timeout 3
nb_get_retry 3
delay_before_retry 3
connect_port 80
}
}
real_server 192.168.2.166 80 {
weight 1
TCP_CHECK {
connect_timeout 3
nb_get_retry 3
delay_before_retry 3
connect_port 80
}
}
}
# shell end
4.启动keepalived：
/usr/local/sbin/keepalived -D -f /usr/local/etc/keepalived/keepalived.conf
在/etc/rc.local中添加，脚本开机启动:
Vi /etc/rc.d/rc.local
添加：
/usr/local/sbin/keepalived -D -f /usr/local/etc/keepalived/keepalived.conf
3.配置LVS_DR的模式
LVS端的配置
（1）写脚本ipvsadm.sh如下：
#!/bin/bash
ipvsadm -C
#VS/DR
ipvsadm -A -t 192.168.2.190:80 -s wlc
ipvsadm -a -t192.168.2.190:80 -r 192.168.2.165:80 -g
ipvsadm -a -t192.168.2.190:80 -r 192.168.2.166:80 -g
ipvsadm –Ln
（2）在eth0上绑定ifcfg-eth0:0的IP为192.168.2.190
Ifcfg-eth0:0的配置文件为：
DEVICE=eth0:0
ONBOOT=yes
BOOTPROTO=static
IPADDR=192.168.2.190
NETMASK=255.255.255.0
#GATEWAY=192.168.2.254
#HWADDR=00:E0:4C:E9:33:7B
两台LVS_Web端的配置：
（1） 配置两台LVS_web的apache服务，至此结束
三． 启动lvs_keepalived服务器的keepalived和lvs的服务
3．
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