LVS DR模式实战部署指南

实战 LVS下DR模式

一. 环境流程图

二 环境设定方式

#在路由器中
[root@router ~]# vmset.sh eth0 172.25.254.100 vsnode
[root@router ~]# vmset.sh eth1 192.168.0.100 vsnode noroute

服务安装
[root@router ~]# dnf install ipvsadm-1.31-6.el9.x86_64  -y
[root@router ~]# systemctl disable --now ipvsadm.service
Removed "/etc/systemd/system/multi-user.target.wants/ipvsadm.service".
[root@router ~]# ipvsadm -C

#设定内核路由功能
[root@router ~]# echo net.ipv4.ip_forward=1 >> /etc/sysctl.conf
[root@router ~]# sysctl  -p
net.ipv4.ip_forward = 1

#数据转发策略
[root@router ~]# iptables -t nat -A POSTROUTING -o eth1 -j SNAT --to-source 192.168.0.100
[root@router ~]# iptables -t nat -A POSTROUTING -o eth0 -j SNAT --to-source 172.25.254.100

设备二（vsnode 调度器）

#vsnode 调度器
[root@vsnode ~]# vmset.sh  eth0 192.168.0.50 vsnode noroute

[root@vsnode ~]# vim /etc/NetworkManager/system-connections/eth0.nmconnection
[connection]
id=eth0
type=ethernet
interface-name=eth0


[ipv4]
method=manual
address2=192.168.0.50/24，192.168.0.100
[root@vsnode ~]# cd /etc/NetworkManager/system-connections/
[root@system-connections ~]# cp -p  eth0.nmconnection lo.nmconnection
[root@system-connections ~]# vim  lo.nmconnection
[connection]
id=lo
type=loopback
interface-name=lo

[ipv4]
method=manual
address1==127.0.0.1/8
address2=192.168.0.200/32
#检测
nmcli connection reload
nmcli connection up eth0
nmcli connection up  lo
root@vsnode system-connections]# route  -n

设备三（client）

#客户端
[root@client ~]# vmset.sh  eth0 172.25.254.99 client
连接已成功激活（D-Bus 活动路径：/org/freedesktop/NetworkManager/ActiveConnection/4）
2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000
    link/ether 00:0c:29:e5:75:af brd ff:ff:ff:ff:ff:ff
    altname enp3s0
    altname ens160
    inet 172.25.254.99/24 brd 172.25.254.255 scope global noprefixroute eth0
       valid_lft forever preferred_lft forever
    inet6 fe80::20c:29ff:fee5:75af/64 scope link tentative noprefixroute
       valid_lft forever preferred_lft forever
client


#检测
[root@client ~]# ping 192.168.0.200
PING 192.168.0.200 (192.168.0.200) 56(84) 比特的数据。
64 比特，来自 192.168.0.200: icmp_seq=1 ttl=128 时间=1.08 毫秒

设备四（RS1）

#RS1
安装httpd(dnf install httpd -y)
[root@RS1 ~]# vmset.sh eth0 192.168.0.10 RS1 noroute
[root@RS1 ~]# nmcli connection modify eth0 ipv4.gateway 192.168.0.100
[root@RS1 ~]# nmcli connection reload
[root@RS1 ~]# nmcli connection up eth0
[root@RS1 ~]# route  -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0         192.168.0.100   0.0.0.0         UG    100    0        0 eth0
192.168.0.0     0.0.0.0         255.255.255.0   U     100    0        0 eth0

#在lo上设定vip
[root@RS1 ~]# cd /etc/NetworkManager/system-connections/
[root@RS1 system-connections]# cp -p eth0.nmconnection lo.nmconnection
[root@RS1 system-connections]# vim lo.nmconnection
[connection]
id=lo
type=loopback
interface-name=lo

[ethernet]

[ipv4]
address1=127.0.0.1/8
address2=192.168.0.200/32
method=manual

[root@RS1 system-connections]# nmcli connection reload
[root@RS1 system-connections]# nmcli connection up lo
连接已成功激活（D-Bus 活动路径：/org/freedesktop/NetworkManager/ActiveConnection/6）
[root@RS1 system-connections]# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet 192.168.0.200/32 scope global lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
       
 #arp禁止响应
[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

设备五(RS2)

#RS2
安装httpd(dnf install httpd -y)
[root@RS2 ~]# vmset.sh eth0 192.168.0.20 RS2 noroute
[root@RS2 ~]# nmcli connection modify eth0 ipv4.gateway 192.168.0.100
[root@RS2 ~]# nmcli connection reload
[root@RS2 ~]# nmcli connection up eth0
[root@RS2 ~]# route  -n
Kernel IP routing table
Destination     Gateway         Genmask         Flags Metric Ref    Use Iface
0.0.0.0         192.168.0.100   0.0.0.0         UG    100    0        0 eth0
192.168.0.0     0.0.0.0         255.255.255.0   U     100    0        0 eth0

#在lo上设定vip
[root@RS2 ~]# cd /etc/NetworkManager/system-connections/
[root@RS2 system-connections]# cp -p eth0.nmconnection lo.nmconnection
[root@RS2 system-connections]# vim lo.nmconnection
[connection]
id=lo
type=loopback
interface-name=lo

[ethernet]

[ipv4]
address1=127.0.0.1/8
address2=192.168.0.200/32
method=manual

[root@RS2 system-connections]# nmcli connection reload
[root@RS2 system-connections]# nmcli connection up lo
连接已成功激活（D-Bus 活动路径：/org/freedesktop/NetworkManager/ActiveConnection/6）
[root@RS2 system-connections]# ip a
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet 192.168.0.200/32 scope global lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
       
#arp禁止响应
[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

echo 2 > /proc/sys/net/ipv4/conf/lo/arp_announce

root@rs2 \~# echo 2 > /proc/sys/net/ipv4/conf/all/arp_announce

测试结果