lvs配置之NAT模式
2021/5/6 18:28:46
本文主要是介绍lvs配置之NAT模式,对大家解决编程问题具有一定的参考价值,需要的程序猿们随着小编来一起学习吧!
LVS NAT模式配置
环境
系统 | IP |
Red Hat8 DR | dip:192.168.100.131 vip:192.168.18.250 |
Red Hat8 RS1 | 192.168.100.132 |
Red Hat8 RS2 | 192.168.100.133 |
准备工作
DR上要有两块网卡
一张是nat模式(对内网)一张是仅主机模式(对外网)
准备工作
//安装ipvsadm [root@DR ~]# dnf -y install ipvsadm [root@RS1 ~]# dnf -y install ipvsadm [root@RS2 ~]# dnf -y install ipvsadm //RS1.RS2安装httpd #dnf -y install httpd //RS1.RS2.DR关闭防火墙和selinux #systemctl stop firewalld #setenforce 0 //RS1.RS2设置开机自启并立即启动httpd #systemctl enable --now httpd //创建测试页(如果想直观查看测试结果可以做这一步,否则可以跳过) [root@RS1 ~]# echo "RS1" > /var/www/html/index.html [root@RS2 ~]# echo "RS2" > /var/www/html/index.html
部署环境(DR网卡部分)
//开启IP转发功能 [root@DR ~]# vim /etc/sysctl.conf ... net.ipv4.ip_forward = 1 [root@DR ~]# sysctl -p net.ipv4.ip_forward = 1 //配置dip [root@DR ~]# vim /etc/sysconfig/network-scripts/ifcfg-ens160 TYPE="Ethernet" BOOTPROTO="static" NAME="ens160" UUID="bcaa49a1-416e-423f-aee9-4c3a2c829950" DEVICE="ens160" ONBOOT="yes" IPADDR=192.168.100.131 NETMASK=255.255.255.0 //配置vip [root@DR ~]# vim /etc/sysconfig/network-scripts/ifcfg-ens224 TYPE="Ethernet" BOOTPROTO="static" NAME="ens224" UUID="bcaa49a1-416e-423f-aee9-4c3a2c829950" DEVICE="ens224" ONBOOT="yes" IPADDR=192.168.18.250 NETMASK=255.255.255.0 //重载网卡 [root@DR ~]# systemctl restart NetworkManager [root@DR ~]# ifdown ens160;ifup ens160 [root@DR ~]# ifdown ens224;ifup ens224 //查看配置 [root@DR ~]# 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 inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: ens160: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000 link/ether 00:0c:29:92:d4:ab brd ff:ff:ff:ff:ff:ff inet 192.168.100.131/24 brd 192.168.100.255 scope global noprefixroute ens160 valid_lft forever preferred_lft forever inet6 fe80::20c:29ff:fe92:d4ab/64 scope link valid_lft forever preferred_lft forever 3: ens224: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc mq state UP group default qlen 1000 link/ether 00:0c:29:92:d4:b5 brd ff:ff:ff:ff:ff:ff inet 192.168.18.250/24 brd 192.168.18.255 scope global noprefixroute ens224 valid_lft forever preferred_lft forever inet6 fe80::20c:29ff:fe92:d4b5/64 scope link valid_lft forever preferred_lft forever [root@DR ~]# ip route list 192.168.18.0/24 dev ens224 proto kernel scope link src 192.168.18.250 metric 101 192.168.100.0/24 dev ens160 proto kernel scope link src 192.168.100.131 metric 100
//配置ipvsadm [root@DR ~]# ipvsadm -A -t 192.168.18.250:80 -s rr [root@DR ~]# ipvsadm -a -t 192.168.18.250:80 -r 192.168.100.132:80 -m [root@DR ~]# ipvsadm -a -t 192.168.18.250:80 -r 192.168.100.133:80 -m //保存配置到文件里 [root@DR ~]# ipvsadm -S > /etc/sysconfig/ipvsadm
配置环境(RS网卡部分)
//RS1配置网卡,将网关指向dip [root@RS1 network-scripts]# vim /etc/sysconfig/network-scripts/ifcfg-ens160 TYPE="Ethernet" BOOTPROTO="static" NAME="ens160" UUID="bcaa49a1-416e-423f-aee9-4c3a2c829950" DEVICE="ens160" ONBOOT="yes" IPADDR=192.168.100.132 GATEWAY=192.168.100.131 NETMASK=255.255.255.0 //RS2配置网卡,将网关指向dip [root@RS2 ~]# vim /etc/sysconfig/network-scripts/ifcfg-ens160 TYPE="Ethernet" BOOTPROTO="dhcp" NAME="ens160" UUID="bcaa49a1-416e-423f-aee9-4c3a2c829950" DEVICE="ens160" ONBOOT="yes" IPADDR=192.168.100.133 NETMASK=255.255.255.0 GATEWAY=192.168.100.131 //重载网卡(两台RS都执行) # systemctl restart NetworkManager [root@RS1 ~]# ifdown ens160;ifup ens160 [root@RS2 ~]# ifdown ens160;ifup ens160
测试
[root@DR ~]# ipvsadm -Ln IP Virtual Server version 1.2.1 (size=4096) Prot LocalAddress:Port Scheduler Flags -> RemoteAddress:Port Forward Weight ActiveConn InActConn TCP 192.168.18.250:80 rr -> 192.168.100.132:80 Masq 1 1 2 -> 192.168.100.133:80 Masq 1 0 2
两边的RS都有被访问到,功能实现
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