一、Nat实验
配置
RS1
root@RS1 \~# dnf install httpd -y
root@RS1 \~# echo RS1 192.168.0.10 > /var/www/html/index.html
root@RS1 \~# systemctl disable --now firewalld关闭防火墙
RS2
root@RS2 \~# dnf install httpd -y
root@RS2 \~# echo RS1 192.168.0.20 > /var/www/html/index.html
root@RS2 \~# systemctl disable --now firewalld
VS
bash
启用内核路由功能
[root@lvs ~]# echo "net.ipv4.ip_forward=1" >> /etc/sysctl.d/ip_forward.conf
[root@lvs ~]# sysctl --system
安装ipvsadm
[root@lvs ~]# yum install ipvsadm -y
[root@lvs ~]# systemctl enable --now ipvsadm
添加调度策略
[root@lvs ~]# ipvsadm -A -t 172.25.254.220:80 -s rr
[root@lvs ~]# ipvsadm -a -t 172.25.254.220:80 -r 192.168.0.10:80 -m
[root@lvs ~]# ipvsadm -a -t 172.25.254.220:80 -r 192.168.0.20:80 -m
查看策略
[root@lvs ~]# ipvsadm -Ln
保存
[root@lvs ~]# ipvsadm -Sn
开机启动
[root@lvs ~]# systemctl enable --now ipvsadm.service测试
二、DR实验
配置
client在客户端主机中为nat模式网卡
vim /etc/NetworkManager/system-connections/eth0.nmconnection
connection
id=eth0
type=ethernet
interface-name=eth0
ipv4
method=manual
address1=172.25.254.200/24,172.25.254.255
dns=8.8.8.8
router在路由主机中设定双网卡，eth0为nat网卡，eth1为仅主机网卡
vim /etc/NetworkManager/system-connections/eth1.nmconnection
connection
id=eth1
type=ethernet
interface-name=eth1
ipv4
method=manual
address1=192.168.0.100/24,192.168.0.255
dns=8.8.8.8
vim /etc/NetworkManager/system-connections/eth0.nmconnection
connection
id=eth0
type=ethernet
interface-name=eth0
ipv4
method=manual
address1=172.25.254.100/24,172.25.254.255
dns=8.8.8.8
lvs设定网卡为仅主机模式
vim /etc/NetworkManager/system-connections/eth1.nmconnection
connection
id=eth1
type=ethernet
interface-name=eth1
ipv4
method=manual
address1=192.168.0.10/24,192.168.0.255
dns=8.8.8.8
设定vip
ip addr add dev lo 192.168.0.220/32
配置策略
root@lvs \~# ipvsadm -A -t 192.168.179.220:80 -s wrr
root@lvs \~# ipvsadm -a -t 192.168.179.220:80 -r 192.168.179.20:80 -g
root@lvs \~# ipvsadm -a -t 192.168.179.220:80 -r 192.168.179.10:80 -g
RS1
vim /etc/NetworkManager/system-connections/eth1.nmconnection
connection
id=eth1
type=ethernet
interface-name=eth1
ipv4
method=manual
address1=192.168.0.20/24,192.168.0.255
dns=8.8.8.8
设定vip
ip addr add dev lo 192.168.0.100/32
解决响应问题
root@RS1 \~# echo 1 > /proc/sys/net/ipv4/conf/all/arp_ignore
root@RS1 \~# echo 1 > /proc/sys/net/ipv4/conf/lo/arp_ignore
root@RS1 \~# echo 2 > /proc/sys/net/ipv4/conf/lo/arp_announce
root@RS1 \~# echo 2 > /proc/sys/net/ipv4/conf/all/arp_announce
RS2
vim /etc/NetworkManager/system-connections/eth1.nmconnection
connection
id=eth1
type=ethernet
interface-name=eth1
ipv4
method=manual
address1=192.168.0.100/24,192.168.0.255
dns=8.8.8.8
设定vip
ip addr add dev lo 192.168.0.100/32
解决响应问题
root@RS2 \~# echo 1 > /proc/sys/net/ipv4/conf/all/arp_ignore
root@RS2 \~# echo 1 > /proc/sys/net/ipv4/conf/lo/arp_ignore
root@RS2 \~# echo 2 > /proc/sys/net/ipv4/conf/lo/arp_announce
root@RS2 \~# echo 2 > /proc/sys/net/ipv4/conf/all/arp_announce
测试
