调度器：
vm15 192.168.122.15
vm16 192.168.122.16
web服务器：
vm17 192.168.122.17
vm18 192.168.122.18
都开启转发 ：
echo "1" > /proc/sys/net/ipv4/ip_forward (临时)
vim /etc/sysctl.conf -> net.ipv4.ip_forward=1 (永久)
sysctl -p 生效
配置好软件仓库
调度器:
vm15:yum install keepalived
一： NAT模式
genhash --server 192.168.122.17 --port 80 -u /var/www/html/index.html
genhash --server 192.168.122.18 --port 80 -u /var/www/html/index.html
得到的hash值填在配置文件digest后面
vim /etc/keepalived/keepalived.conf
vrrp_script chk_keepalived {
script "kill -0 keepalived" 检测keepalived 是否正常运行
interval 2 每2秒检测一次
weight
}
vrrp_instance VI_1 {
state MASTER
interface eth0
virtual_router_id 51
priority 100
advert_int 1
authentication {
auth_type PASS
auth_pass 123123
}
track_script {
chk_keepalived
}
virtual_ipaddress {
192.168.122.100
}
}
virtual_server 192.168.122.100 80 {
delay_loop 6
lb_algo rr
lb_kind NAT
nat_mask 255.255.255.0
persistence_timeout 0
protocol TCP
real_server 192.168.122.17 80 {
weight 1
HTTP_GET {
url {
path /var/www/html/index.html
digest ff20ad2481f97b1754ef3e12ecd3a9cc
}
connect_timeout 3
nb_get_retry 3
delay_before_retry
}
}
real_server 192.168.122.18 80 {
weight 1
HTTP_GET {
url {
path /var/www/html/index.html
digest 9b3a0c85a887a256d6939da88aabd8cd
}
connect_timeout 3
nb_get_retry 3
delay_before_retry 3
}
}
}
vm16:
vim /etc/keepalived/keepalived.conf
vrrp_script chk_keepalived {
script "kill -0 keepalived" 检测keepalived 是否正常运行
interval 2 每2秒检测一次
weight
}
vrrp_instance VI_1 {
state BACKUP
interface eth0
virtual_router_id 51
priority 99
advert_int 1
authentication {
auth_type PASS
auth_pass 123123
}
track_script {
chk_keepalived
}
virtual_ipaddress {
192.168.122.100
}
}
virtual_server 192.168.122.100 80 {
delay_loop 6
lb_algo rr
lb_kind NAT
nat_mask 255.255.255.0
persistence_timeout 0
protocol TCP
real_server 192.168.122.17 80 {
weight 1
HTTP_GET {
url {
path /var/www/html/index.html
digest ff20ad2481f97b1754ef3e12ecd3a9cc
}
connect_timeout 3
nb_get_retry 3
delay_before_retry
}
}
real_server 192.168.122.18 80 {
weight 1
HTTP_GET {
url {
path /var/www/html/index.html
digest 9b3a0c85a887a256d6939da88aabd8cd
}
connect_timeout 3
nb_get_retry 3
delay_before_retry 3
}
}
}
保存退出
service keepalived restart
chkconfig keepalived on
vm17 vm18 :
vim /var/www/html/index.html
hello,vm17
vim /var/www/html/index.html
hello,vm18
service httpd restart
vm15 vm16:
ip addr show eth0 看VIP 192.168.122.100产生没有
yum install ipvsadm
运行: ipvsadm 查看后端RS及vm17和vm18产生没有
vm17 vm18:
添加路由规则： 因为这里是NAT
192.168.122这个网段：route add -net 192.168.122.0 netmask 255.255.255.0 gw 192.168.122.100
单个主机： route add -host 192.168.122.19 netmask 255.255.255.255 gw 192.168.122.100
测试： vm19 192.168.122.19
curl 192.168.122.100
可以看到轮循看到：
hello,vm17
hell,vm18
就成功了
二：直接路由模式：
vm15 vm16:
vim /etc/keepalived/keepalived.conf
lb_kind NAT 改为：lb_kind DR
vm17 vm18:
vim lvsrs
将VIP改为调度设置的VIP
#!/bin/bash
#
# lvsrs Startup script for the lvsrs Server
#
# chkconfig: 2345 86 14
# description: lvsrs script. It is used to serve \
#
VIP=192.168.122.100
. /etc/rc.d/init.d/functions
case "$1" in
start)
echo " start LVS of REALServer"
/sbin/ifconfig lo:0 $VIP broadcast $VIP netmask 255.255.255.255 up
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
;;
stop)
echo "close LVS Directorserver"
/sbin/ifconfig lo:0 down
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 "Usage: $0 {start|stop}"
exit 1
esac
保存退出，
cp lvsrs /etc/init.d/
chmod +x /etc/init.d/lvsrs
service lvsrs start
chkconfig lvsrs on
测试： vm19 192.168.122.19
curl 192.168.122.100
一般都用直接路由模式
