CentOS5.5环境上布署LVS+keepalived

CentOS5.5环境下布署LVS+keepalived

#!/bin/bash
# BY kerryhu
# MAIL:king_819@163.com
# BLOG:http://kerry.blog.51cto.com
# Please manual operation yum of before Operation.....
系统环境`：CentOS 5.5（定制安装）
组件：
Base
Development Libraries
Development Tools
Editors
Text-based Internet

lvs-master：192.168.9.201
lvs-backup：192.168.9.202
vip：192.168.9.200
web1：192.168.9.203
web2：192.168.9.204
netmask：255.255.255.0
gateway：192.168.9.1

网络拓扑：

echo "============================ 更新系统时间 ======================"
yum install -y ntp
ntpdate time.nist.gov
echo "00 01 * * * /usr/sbin/ntpdate time.nist.gov" /etc/crontab

echo “============================ 关闭不用服务 =======================”
/root/del_servcie.sh?????????? # 附件中自定义脚本

echo “========================= 安装ipvsadm、keepalived ==================”
[root@master ~]# cd /usr/local/src
[root@master ~]# wget http://www.linuxvirtualserver.org/software/kernel-2.6/ipvsadm-1.24.tar.gz
[root@master ~]# wget http://www.keepalived.org/software/keepalived-1.1.17.tar.gz
[root@master ~]# ln -sv /usr/src/kernels/2.6.18-194.el5-i686/ /usr/src/linux
[root@master ~]# tar -zxvf ipvsadm-1.24.tar.gz
[root@master ~]# cd ipvsadm-1.24
[root@master ~]# make;make install
[root@master ~]# cd ..
[root@master ~]# tar -zxvf keepalived-1.1.17.tar.gz
[root@master ~]# cd keepalived-1.1.17
[root@master ~]# ./configure
configure: error:
? !!! OpenSSL is not properly installed on your system. !!!
? !!! Can not include OpenSSL headers files.
解决办法：
[root@master ~]# yum -y install openssl-devel
[root@master ~]# ./configure
[root@master ~]# make;make install
编译的时候出现这个提示，说明keepalived和内核结合了，如果不是这样的，需要加上这个参数./configure --with-kernel-

dir=/kernel/path
Keepalived configuration
------------------------
Keepalived version?????? : 1.1.17
Compiler???????????????? : gcc
Compiler flags?????????? : -g -O2
Extra Lib??????????????? : -lpopt -lssl -lcrypto
Use IPVS Framework?????? : Yes
IPVS sync daemon support : Yes
Use VRRP Framework?????? : Yes
Use LinkWatch??????????? : No
Use Debug flags????????? : No

echo “======================= 配置keepalived ===========================”
[root@master ~]#? cp /usr/local/etc/rc.d/init.d/keepalived /etc/rc.d/init.d/
[root@master ~]#? cp /usr/local/etc/sysconfig/keepalived /etc/sysconfig/
[root@master ~]#? mkdir /etc/keepalived
[root@master ~]#? cp /usr/local/sbin/keepalived /usr/sbin/
[root@master ~]# vi /etc/keepalived/keepalived.conf
! Configuration File for keepalived
?
global_defs {
?? notification_email {
????? king_819@163.com
?? }
?? notification_email_from king_819@163.com
?? smtp_server smtp.163.com
? # smtp_connect_timeout 30
?? router_id LVS_DEVEL
}
?
# VIP1
vrrp_instance VI_1 {
??? state MASTER???????????? #备份服务器上将MASTER改为BACKUP??
??? interface eth0
??? lvs_sync_daemon_inteface eth0
??? virtual_router_id 51
??? priority 100??? # 备份服务上将100改为90
??? advert_int 5
??? authentication {
??????? auth_type PASS
??????? auth_pass 1111
??? }
??? virtual_ipaddress {
??????? 192.168.9.200??
??????? #(如果有多个VIP，继续换行填写.)
??? }
}
?
virtual_server 192.168.9.200 80 {
??? delay_loop 6????????????????? #(每隔10秒查询realserver状态)
??? lb_algo wlc????????????????? #(lvs 算法)
??? lb_kind DR????????????????? #(Direct Route)
??? persistence_timeout 60??????? #(同一IP的连接60秒内被分配到同一台realserver)
??? protocol TCP??????????????? #(用TCP协议检查realserver状态)
?
??? real_server 192.168.9.203 80 {
??????? weight 100?????????????? #(权重)
??????? TCP_CHECK {
??????? connect_timeout 10?????? #(10秒无响应超时)
??????? nb_get_retry 3
??????? delay_before_retry 3
??????? connect_port 80
??????? }
??? }
??? real_server 192.168.9.204 80 {
??????? weight 100
??????? TCP_CHECK {
??????? connect_timeout 10
??????? nb_get_retry 3
??????? delay_before_retry 3
??????? connect_port 80
??????? }
???? }
}
[root@master ~]#? service keepalived start|stop
[root@master ~]# chkconfig level 2345 keepalived on

echo “====================== 配置realserver =========================”
[root@web_1 ~]# vi /root/lvs_real.sh
#!/bin/bash
# description: Config realserver
#Written by : http://kerry.blog.51cto.com

SNS_VIP=192.168.9.200
?
/etc/rc.d/init.d/functions
?
case "$1" in
start)
?????? /sbin/ifconfig lo:0 $SNS_VIP netmask 255.255.255.255 broadcast $SNS_VIP
?????? /sbin/route add -host $SNS_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)
?????? /sbin/ifconfig lo:0 down
?????? /sbin/route del $SNS_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
?????? echo "RealServer Stoped"
?????? ;;
*)
?????? echo "Usage: $0 {start|stop}"
?????? exit 1
esac
?
exit 0