lvs+keepalived
安装lvs+keepalived
a. 下载源码包
wget http://www.linuxvirtualserver.org/software/kernel-2.6/ipvsadm-1.24.tar.gz
wget http://www.keepalived.org/software/keepalived-1.2.7.tar.gz
b. 建立软链接
ln -s /usr/src/kernels/2.6.* /usr/src/linux
c. 安装ipvsadm
tar xzvf ipvsadm-1.24.tar.gz
make
make install
或者 yum -y install ipvsadm(简单)
d. 安装keepalived
tar -xzvf keepalived-1.2.7.tar.gz
./configure
make
make install
e. 配置keepalived
cp /usr/local/etc/rc.d/init.d/keepalived /etc/rc.d/init.d/
cp /usr/local/etc/sysconfig/keepalived /etc/sysconfig/
mkdir -p /etc/keepalived
cp /usr/local/etc/keepalived/keepalived.conf /etc/keepalived/
cp /usr/local/sbin/keepalived /usr/sbin/
vi /etc/keepalived/keepalived.conf
! Configuration File for keepalived
global_defs {
router_id LVS_MASTER
}
vrrp_instance VI_1 {
state MASTER #备机为 BACKUP
interface eth0
virtual_router_id 51
priority 100 #备机为 90
advert_int 1
authentication {
auth_type PASS
auth_pass 1111
}
virtual_ipaddress {
192.168.41.173 #VIP
}
}
virtual_server 192.168.41.173 80 {
delay_loop 6
lb_algo rr
lb_kind NAT
# persistence_timeout 5
protocol TCP
real_server 192.168.41.183 80 {
weight 3
TCP_CHECK {
connect_timeout 3
nb_get_retry 3
delay_before_retry 3
connect_port 80
}
}
real_server 192.168.41.186 80 {
weight 3
TCP_CHECK {
connect_timeout 3
nb_get_retry 3
delay_before_retry 3
connect_port 80
}
}
}
f. 开启路由转发
[root@CentOS-LVS_MASTER ~]# vi /etc/sysctl.conf
net.ipv4.ip_forward = 1
[root@CentOS-LVS_MASTER ~]# sysctl –p
g. 创建 realserver.sh
cd /etc/init.d/
vi realserver.sh
#add for chkconfig
#chkconfig: 2345 70 30
#description: RealServer's script
#processname: realserver.sh
#!/bin/bash
VIP=192.168.41.173
source /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
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
echo "RealServer Stoped"
;;
*)
echo "Usage: $0 {start|stop}"
exit 1
esac
exit 0
7、启动keepalived
/etc/init.d/keepalived start
执行 realserver.sh
./ realserver.sh
查看vip落点情况
cd /etc/keepalived/
ipvsadm –ln