LVS-DR三种不同实现方式
2019-05-26 23:12
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LVS-DR三种不同实现方式
1.VIP和DIP在同一网段的实现
网络拓扑图
配置环境
配置Client网关指向route的RIP1
[root@client ~]# route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 0.0.0.0 172.22.27.20 0.0.0.0 UG 100 0 0 ens33 172.22.0.0 0.0.0.0 255.255.0.0 U 100 0 0 ens33
route上开启路由间转发
[root@route ~]# echo 1 > /proc/sys/net/ipv4/ip_forward
VS操作
在director上将网关指向route的RIP2
[root@director ~]# route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 0.0.0.0 192.168.153.10 0.0.0.0 UG 100 0 0 ens33 192.168.153.0 0.0.0.0 255.255.255.0 U 100 0 0 ens33
执行脚本配置VS
[root@director ~]# bash lvs_dr_vs.sh start The VS Server is Ready!
脚本内容
#!/bin/bash
vip='192.168.153.50'
iface='lo:1'
mask='255.255.255.255'
port='80'
rs1='192.168.153.30'
rs2='192.168.153.40'
scheduler='wrr'
type='-g'
rpm -q ipvsadm &> /dev/null || yum -y install ipvsadm &> /dev/null
case $1 in
start)
ifconfig $iface $vip netmask $mask #broadcast $vip up
iptables -F
ipvsadm -A -t ${vip}:${port} -s $scheduler
ipvsadm -a -t ${vip}:${port} -r ${rs1} $type -w 1
ipvsadm -a -t ${vip}:${port} -r ${rs2} $type -w 1
echo "The VS Server is Ready!"
;;
stop)
ipvsadm -C
ifconfig $iface down
echo "The VS Server is Canceled!"
;;
*)
echo "Usage: $(basename $0) start|stop"
exit 1
;;
esac
RS操作
分别在两台RS上将网关指向route的RIP2
[root@rs1 ~]# route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 0.0.0.0 192.168.153.10 0.0.0.0 UG 100 0 0 ens33 192.168.153.0 0.0.0.0 255.255.255.0 U 100 0 0 ens33
在RS端执行lvs配置脚本
[root@rs1 ~]# bash lvs_dr_rs.sh start The httpd Server is Ready! The RS Server is Ready!
脚本内容
#!/bin/bash vip=192.168.153.50 mask='255.255.255.255' dev=lo:1 rpm -q httpd &> /dev/null || yum -y install httpd &>/dev/null service httpd start &> /dev/null && echo "The httpd Server is Ready!" echo "<h1>`hostname`</h1>" > /var/www/html/index.html case $1 in start) echo 1 > /proc/sys/net/ipv4/conf/all/arp_ignore echo 1 > /proc/sys/net/ipv4/conf/lo/arp_ignore echo 2 > /proc/sys/net/ipv4/conf/all/arp_announce echo 2 > /proc/sys/net/ipv4/conf/lo/arp_announce ifconfig $dev $vip netmask $mask #broadcast $vip up #route add -host $vip dev $dev echo "The RS Server is Ready!" ;; stop) ifconfig $dev down echo 0 > /proc/sys/net/ipv4/conf/all/arp_ignore echo 0 > /proc/sys/net/ipv4/conf/lo/arp_ignore echo 0 > /proc/sys/net/ipv4/conf/all/arp_announce echo 0 > /proc/sys/net/ipv4/conf/lo/arp_announce echo "The RS Server is Canceled!" ;; *) echo "Usage: $(basename $0) start|stop" exit 1 ;; esac
测试
[root@client ~]# curl 192.168.153.50 <h1>rs2</h1> [root@client ~]# curl 192.168.153.50 <h1>rs1</h1>
2.VIP和DIP不在同一网段
网络拓扑图
配置环境
配置Client网关指向route的RIP1
[root@client ~]# route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 0.0.0.0 172.22.27.20 0.0.0.0 UG 100 0 0 ens33 172.22.0.0 0.0.0.0 255.255.0.0 U 100 0 0 ens33
route上开启路由间转发
[root@route ~]# echo 1 > /proc/sys/net/ipv4/ip_forward
在route上绑定一个IP用来接收RS的相应报文
[root@route ~]# ip a a 192.168.100.100/24 dev ens37
VS端操作
在director上将网关指向route的RIP2
[root@director ~]# route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 0.0.0.0 192.168.153.10 0.0.0.0 UG 100 0 0 ens33 192.168.153.0 0.0.0.0 255.255.255.0 U 100 0 0 ens33
执行脚本配置VS
[root@director ~]# bash lvs_dr_vs.sh start The VS Server is Ready!
脚本内容
#!/bin/bash
vip='192.168.100.50'
iface='lo:1'
mask='255.255.255.255'
port='80'
rs1='192.168.153.30'
rs2='192.168.153.40'
scheduler='wrr'
type='-g'
rpm -q ipvsadm &> /dev/null || yum -y install ipvsadm &> /dev/null
case $1 in
start)
ifconfig $iface $vip netmask $mask #broadcast $vip up
iptables -F
ipvsadm -A -t ${vip}:${port} -s $scheduler
ipvsadm -a -t ${vip}:${port} -r ${rs1} $type -w 1
ipvsadm -a -t ${vip}:${port} -r ${rs2} $type -w 1
echo "The VS Server is Ready!"
;;
stop)
ipvsadm -C
ifconfig $iface down
echo "The VS Server is Canceled!"
;;
*)
echo "Usage: $(basename $0) start|stop"
exit 1
;;
esac
RS操作
分别在两台RS上将网关指向route的RIP2
[root@rs1 ~]# route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 0.0.0.0 192.168.153.10 0.0.0.0 UG 100 0 0 ens33 192.168.153.0 0.0.0.0 255.255.255.0 U 100 0 0 ens33
在RS端执行lvs配置脚本
[root@rs1 ~]# bash lvs_dr_rs.sh start The httpd Server is Ready! The RS Server is Ready!
脚本内容
#!/bin/bash vip=192.168.100.50 mask='255.255.255.255' dev=lo:1 rpm -q httpd &> /dev/null || yum -y install httpd &>/dev/null service httpd start &> /dev/null && echo "The httpd Server is Ready!" echo "<h1>`hostname`</h1>" > /var/www/html/index.html case $1 in start) echo 1 > /proc/sys/net/ipv4/conf/all/arp_ignore echo 1 > /proc/sys/net/ipv4/conf/lo/arp_ignore echo 2 > /proc/sys/net/ipv4/conf/all/arp_announce echo 2 > /proc/sys/net/ipv4/conf/lo/arp_announce ifconfig $dev $vip netmask $mask #broadcast $vip up #route add -host $vip dev $dev echo "The RS Server is Ready!" ;; stop) ifconfig $dev down echo 0 > /proc/sys/net/ipv4/conf/all/arp_ignore echo 0 > /proc/sys/net/ipv4/conf/lo/arp_ignore echo 0 > /proc/sys/net/ipv4/conf/all/arp_announce echo 0 > /proc/sys/net/ipv4/conf/lo/arp_announce echo "The RS Server is Canceled!" ;; *) echo "Usage: $(basename $0) start|stop" exit 1 ;; esac
测试
[root@client ~]# curl 192.168.100.50 <h1>rs2</h1> [root@client ~]# curl 192.168.100.50 <h1>rs1</h1>
3.VIP和DIP不在同一网段2（route使用一个ip地址）
网络拓扑图
配置环境
配置Client网关指向route的RIP1
[root@client ~]# route -n Kernel IP routing table Destination Gateway Genmask Flags Metric Ref Use Iface 0.0.0.0 172.22.27.20 0.0.0.0 UG 100 0 0 ens33 172.22.0.0 0.0.0.0 255.255.0.0 U 100 0 0 ens33
route上开启路由间转发
[root@route ~]# echo 1 > /proc/sys/net/ipv4/ip_forward
在route上配置RIP2
[root@route ~]# vim /etc/sysconfig/network-scripts/ifcfg-ens37 IPADDR=192.168.100.100 PREFIX=24
RS配置
执行RS配置脚本
[root@rs1 ~]# bash lvs_dr_rs.sh start The httpd Server is Ready! The RS Server is Ready!
脚本内容
#!/bin/bash vip=192.168.100.50 mask='255.255.255.0' dev=ens33:1 rpm -q httpd &> /dev/null || yum -y install httpd &>/dev/null service httpd start &> /dev/null && echo "The httpd Server is Ready!" echo "<h1>`hostname`</h1>" > /var/www/html/index.html case $1 in start) echo 1 > /proc/sys/net/ipv4/conf/all/arp_ignore echo 1 > /proc/sys/net/ipv4/conf/lo/arp_ignore echo 2 > /proc/sys/net/ipv4/conf/all/arp_announce echo 2 > /proc/sys/net/ipv4/conf/lo/arp_announce ifconfig $dev $vip netmask $mask #broadcast $vip up #route add -host $vip dev $dev echo "The RS Server is Ready!" ;; stop) ifconfig $dev down echo 0 > /proc/sys/net/ipv4/conf/all/arp_ignore echo 0 > /proc/sys/net/ipv4/conf/lo/arp_ignore echo 0 > /proc/sys/net/ipv4/conf/all/arp_announce echo 0 > /proc/sys/net/ipv4/conf/lo/arp_announce echo "The RS Server is Canceled!" ;; *) echo "Usage: $(basename $0) start|stop" exit 1 ;; esac
将VS的网关指RIP2
Destination Gateway Genmask Flags Metric Ref Use Iface 0.0.0.0 192.168.100.100 0.0.0.0 UG 0 0 0 ens33 192.168.100.0 0.0.0.0 255.255.255.0 U 0 0 0 ens33 192.168.153.0 0.0.0.0 255.255.255.0 U 100 0 0 ens33
VS配置
为director配置地址
[root@director ~]# vim /etc/sysconfig/network-scripts/ifcfg-ens33 IPADDR=192.168.153.20 PREFIX=24
执行vs配置脚本
[root@director ~]# bash lvs_dr_vs.sh start The VS Server is Ready!
脚本内容
#!/bin/bash
vip='192.168.100.50'
iface='ens33:1'
mask='255.255.255.255'
port='80'
rs1='192.168.153.30'
rs2='192.168.153.40'
scheduler='wrr'
type='-g'
rpm -q ipvsadm &> /dev/null || yum -y install ipvsadm &> /dev/null
case $1 in
start)
ifconfig $iface $vip netmask $mask #broadcast $vip up
iptables -F
ipvsadm -A -t ${vip}:${port} -s $scheduler
ipvsadm -a -t ${vip}:${port} -r ${rs1} $type -w 1
ipvsadm -a -t ${vip}:${port} -r ${rs2} $type -w 1
echo "The VS Server is Ready!"
;;
stop)
ipvsadm -C
ifconfig $iface down
echo "The VS Server is Canceled!"
;;
*)
echo "Usage: $(basename $0) start|stop"
exit 1
;;
esac
测试
[root@client ~]# curl 192.168.100.50 <h1>rs2</h1> [root@client ~]# curl 192.168.100.50 <h1>rs1</h1>[root@client ~]# curl 192.168.100.50 <h1>rs2</h1> [root@client ~]# curl 192.168.100.50 <h1>rs1</h1>
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