lvs_keepalived安装文档

1的前端，两台用于后台测试web。
LVS1-DR-Master 192.168.50.17
LVS2-DR-BACKUP 192.168.50.18
LVS-DR-VIP 192.168.50.33
WEB1-Realserver 192.168.50.56
WEB2-Realserver 192.168.50.57
2中最简单的架构，只能保证lvs前端和后台realserver）给了一份更为完美的架构。





架构图（2。可以保证交换机或机器的一个口在down掉情况下，仍能正常提供服务，消除了交换机和机器的单点故障。当然也可不绑定bond本身的功能，日后做系统，如有需要，也是一种单点的解决方案。




3个1000Base-X
SFP口

1.5w

H3C S5100-48P-EI

二层

48个10/100/1000Base-T自适应以太网端口，4×10GE
XFP插卡或者4端口可用于千兆以太网和光纤通道，而XFP

则支持万兆光纤接口。

3.5w

4和Keepalived
#lsmod |grep ip_vs
#uname -r
2.6.9-67.Elsmp
#ln -s /usr/src/kernels/2.6.9-67.EL-i686/ /usr/src/linux

#tar zxvf ipvsadm-1.24.tar.gz
#cd ipvsadm-1.24
#make && make install
#find / -name ipvsadm # 查看keepalived位置

#cp /usr/local/etc/rc.d/init.d/keepalived /etc/rc.d/init.d/
#cp /usr/local/etc/sysconfig/keepalived /etc/sysconfig/
#mkdir /etc/keepalived
#cp /usr/local/etc/keepalived/keepalived.conf /etc/keepalived/
#cp /usr/local/sbin/keepalived /usr/sbin/
#service keepalived start|stop #做成系统启动服务方便管理.
5、realserver端安装，只需安装ipvsadm
下载及安装
#mkdir /usr/local/src/lvs
#cd /usr/local/src/lvs
#wget http://www.linuxvirtualserver.org/software/kernel-2.6/ipvsadm-1.24.tar.gz
#lsmod |grep ip_vs
#uname -r
2.6.9-67.Elsmp

#ln -s /usr/src/kernels/2.6.9-67.EL-i686/ /usr/src/linux
#tar zxvf ipvsadm-1.24.tar.gz
#cd ipvsadm-1.24
#make && make install
#find / -name ipvsadm # 机器的配置,其他选项不用动，按下面来就可以了
# echo "net.ipv4.ip_forward = 1" >> /etc/sysctl.conf
#sysctl -p

1> master配置
#Configuration File for keepalived
global_defs {
notification_email {
niulw@ifeng.com
}
notification_email_from lvs_check@ifeng.com
smtp_server 127.0.0.1
smtp_connect_timeout 30
lvs_id LVS_ONE
}

vrrp_instance VI_1 {
state MASTER
interface bond0
lvs_sync_daemon_interface bond0
virtual_router_id 50
priority 200
advert_int 1
smtp_alert
garp_master_delay 1
preempt_delay 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.50.33/24 brd + dev bond0 scope global
}
}

virtual_server 192.168.50.33 80 {
delay_loop 5
lb_algo wlc
lb_kind DR

protocol TCP
real_server 192.168.50.56 80 {
weight 1
TCP_CHECK {
connect_timeout 3
nb_get_retry 3
delay_before_retry 3
connect_port 80
}
}
real_server 192.168.50.57 80 {
weight 1
TCP_CHECK {
connect_timeout 3
nb_get_retry 3
delay_before_retry 3
connect_port 80
}
}
}
2> backup 配置
lvs2和 priority）。
state BACKUP
priority 50

7前端能探测到，而realserver则不能提供正常服务
#!/bin/bash
# description: Config realserver lo and apply noarp

VIP=192.168.50.33

. /etc/rc.d/init.d/functions

case "$1" in
start)
ifconfig lo:0 $VIP netmask 255.255.255.255 broadcast $VIP
/sbin/route add -host $VIP dev lo:0
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 >/dev/null 2>&1
echo "RealServer Start OK"

;;
stop)
ifconfig lo:0 down
route del $VIP >/dev/null 2>&1
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
sysctl -p >/dev/null 2>&1
echo "RealServer Stoped"
;;
*)
echo "Usage: $0 {start|stop}"
exit 1
esac

exit 0