LVS的DR模式

目录

一.实验环境

1.路由器

2.调度器

3.真实服务器

4.客户端

二.实验配置

1.路由器中打开内核路由器功能

2.RS主机中使vip不对外响应

3.在LVS主机和RS主机添加vip

4.在VS中添加调度策略

三.测试

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一.实验环境

一台客户端、一台路由器、一台调度器、两台真实服务器

VMVare网络设置NAT模式子网IP为172.25.254.0，仅主机模式子网IP为192.168.0.0

1.路由器

VMVare设置eth0网卡为NAT模式，eth1为仅主机模式

[root@router ~]# cat /etc/NetworkManager/system-connections/eth0.nmconnection  [connection] id=eth0 type=ethernet interface-namw=eth0  [ipv4] address1=172.25.254.100/24,172.25.254.2 method=manual dns=114.114.114.114;  [root@router ~]# cat /etc/NetworkManager/system-connections/eth1.nmconnection  [connection] id=eth1 type=ethernet interface-namw=eth1  [ipv4] address1=192.168.0.100/24 method=manual

2.调度器

VMVare设置eth1网卡为仅主机模式

[root@LVS ~]# cat /etc/NetworkManager/system-connections/eth1.nmconnection  [connection] id=eth1 type=ethernet interface-namw=eth1  [ipv4] address1=192.168.0.50/24,192.168.0.100 method=manual

3.真实服务器

VMVare设置eth0网卡为仅主机模式

[root@webserver1 ~]# cat /etc/NetworkManager/system-connections/eth0.nmconnection  [connection] id=eth0 type=ethernet interface-namw=eth0  [ipv4] address1=192.168.0.10/24,192.168.0.100 method=manual

[root@webserver2 ~]# cat /etc/NetworkManager/system-connections/eth0.nmconnection  [connection] id=eth0 type=ethernet interface-namw=eth0  [ipv4] address1=192.168.0.20/24,192.168.0.100 method=manual

4.客户端

VMVare设置eth0网卡为仅主机模式

[root@client ~]# curl 192.168.0.200 webserver2 - 192.168.0.20 [root@client ~]# cat /etc/NetworkManager/system-connections/eth0.nmconnection  [connection] id=eth0 type=ethernet interface-namw=eth0  [ipv4] address1=172.25.254.200/24,172.25.254.100 method=manual

二.实验配置

1.路由器中打开内核路由器功能

[root@router ~]# echo "net.ipv4.ip_forward=1" > /etc/sysctl.conf

[root@router ~]# sysctl -a | grep ip_forward net.ipv4.ip_forward = 1 net.ipv4.ip_forward_update_priority = 1 net.ipv4.ip_forward_use_pmtu = 0

2.RS主机中使vip不对外响应

[root@webserver1 ~]# echo 1 > /proc/sys/net/ipv4/conf/all/arp_ignore       [root@webserver1 ~]# echo 2 > /proc/sys/net/ipv4/conf/all/arp_announce  [root@webserver1 ~]# echo 1 > /proc/sys/net/ipv4/conf/lo/arp_ignore  [root@webserver1 ~]# echo 2 > /proc/sys/net/ipv4/conf/lo/arp_announce 

[root@webserver2 ~]# echo 1 > /proc/sys/net/ipv4/conf/all/arp_ignore       [root@webserver2 ~]# echo 2 > /proc/sys/net/ipv4/conf/all/arp_announce  [root@webserver2 ~]# echo 1 > /proc/sys/net/ipv4/conf/lo/arp_ignore  [root@webserver2 ~]# echo 2 > /proc/sys/net/ipv4/conf/lo/arp_announce 

3.在LVS主机和RS主机添加vip（临时添加，关机重启后需要重新添加）

[root@LVS ~]# ip a a 192.168.0.200/32 dev lo

[root@webserver1 ~]# ip a a 192.168.0.200/32 dev lo

[root@webserver2 ~]# ip a a 192.168.0.200/32 dev lo

4.在VS中添加调度策略

[root@LVS ~]# ipvsadm -Ln IP Virtual Server version 1.2.1 (size=4096) Prot LocalAddress:Port Scheduler Flags   -> RemoteAddress:Port           Forward Weight ActiveConn InActConn  [root@LVS ~]# ipvsadm -A -t 192.168.0.200:80 -s wrr [root@LVS ~]# ipvsadm -a -t 192.168.0.200:80 -r 192.168.0.10:80 -g -w 1 [root@LVS ~]# ipvsadm -a -t 192.168.0.200:80 -r 192.168.0.20:80 -g -w 2  [root@LVS ~]# ipvsadm -Ln IP Virtual Server version 1.2.1 (size=4096) Prot LocalAddress:Port Scheduler Flags   -> RemoteAddress:Port           Forward Weight ActiveConn InActConn TCP  192.168.0.200:80 wrr   -> 192.168.0.10:80              Route   1      0          0            -> 192.168.0.20:80  

三.测试

[root@client ~]# for i in {1..10} > do > curl 192.168.0.200 > done webserver2 - 192.168.0.20 webserver1 - 192.168.0.10 webserver2 - 192.168.0.20 webserver2 - 192.168.0.20 webserver1 - 192.168.0.10 webserver2 - 192.168.0.20 webserver2 - 192.168.0.20 webserver1 - 192.168.0.10 webserver2 - 192.168.0.20 webserver2 - 192.168.0.20