当然可以。以下是按照您的要求整理的表格形式的实验手册：
| 主机名称 | 网卡信息 | 安装应用 | 系统 |
|---|---|---|---|
| Client客户端 | 192.168.2.101 | 无 | RHEL8/CentOS8 |
| Lvs服务器（DR） | DIP:192.168.2.110 VIP:192.168.40.111 |
ipvsadm | RHEL8/CentOS8 |
| RS1 | RIP:192.168.2.111 | httpd | RHEL8/CentOS8 |
| RS2 | RIP:192.168.2.112 | httpd | RHEL8/CentOS8 |
这里的每个主机都有其特定的功能和配置：
- Client客户端：用于发起请求。
- Lvs服务器（DR）：作为负载均衡器，负责接收和分发流量。
- RS1 和 RS2：作为真实服务器，处理来自负载均衡器的请求。
负载均衡器 (LB)
-
保存 IPVS 配置:
ipvsadm --save > /etc/sysconfig/ipvsadm -
启用 IP 转发:
echo "net.ipv4.ip_forward = 1" >> /etc/sysctl.conf sysctl -p -
配置 TUN 接口:
ifconfig tunl0 192.168.2.200 broadcast 192.168.2.200 netmask 255.255.255.255 up -
创建虚拟服务器并设置轮询调度:
ipvsadm -A -t 192.168.2.200:80 -s rr -
添加真实服务器:
ipvsadm -a -t 192.168.2.200:80 -r 192.168.2.111:80 -i ipvsadm -a -t 192.168.2.200:80 -r 192.168.2.112:80 -i -
禁用防火墙与 SELinux:
systemctl stop firewalld.service setenforce 0 -
验证 IPVS 配置:
ipvsadm -ln
真实服务器 1 (RS1)
-
启动 HTTP 服务:
systemctl start httpd -
禁用 SELinux 和防火墙:
setenforce 0 systemctl stop firewalld.service -
配置网站内容:
echo "this is web1" >> /var/www/html/index.html -
测试网站:
curl 127.0.0.1 -
配置 TUN 接口:
ifconfig tunl0 192.168.2.200 broadcast 192.168.2.200 netmask 255.255.255.255 up -
调整 sysctl 设置:
echo "net.ipv4.conf.tunl0.arp_ignore = 1" >> /etc/sysctl.conf echo "net.ipv4.conf.tunl0.arp_announce = 2" >> /etc/sysctl.conf echo "net.ipv4.conf.all.arp_ignore = 1" >> /etc/sysctl.conf echo "net.ipv4.conf.all.arp_announce = 2" >> /etc/sysctl.conf echo "net.ipv4.conf.tunl0.rp_filter = 0" >> /etc/sysctl.conf echo "net.ipv4.conf.all.rp_filter = 0" >> /etc/sysctl.conf sysctl -p
真实服务器 2 (RS2)
-
启动 HTTP 服务:
systemctl start httpd -
禁用 SELinux 和防火墙:
setenforce 0 systemctl stop firewalld.service -
配置网站内容:
echo "this is web2" >> /var/www/html/index.html -
测试网站:
curl 127.0.0.1 -
配置 TUN 接口:
ifconfig tunl0 192.168.2.200 broadcast 192.168.2.200 netmask 255.255.255.255 up -
调整 sysctl 设置:
echo "net.ipv4.conf.tunl0.arp_ignore = 1" >> /etc/sysctl.conf echo "net.ipv4.conf.tunl0.arp_announce = 2" >> /etc/sysctl.conf echo "net.ipv4.conf.all.arp_ignore = 1" >> /etc/sysctl.conf echo "net.ipv4.conf.all.arp_announce = 2" >> /etc/sysctl.conf echo "net.ipv4.conf.tunl0.rp_filter = 0" >> /etc/sysctl.conf echo "net.ipv4.conf.all.rp_filter = 0" >> /etc/sysctl.conf sysctl -p
测试
-
测试负载均衡器:
curl 192.168.2.200[root@localhost ~]# curl 192.168.2.200 this is web2 [root@localhost ~]# curl 192.168.2.200 this is web1 [root@localhost ~]# curl 192.168.2.200 this is web2 [root@localhost ~]# curl 192.168.2.200 this is web1 [root@localhost ~]# curl 192.168.2.200 this is web2 [root@localhost ~]# curl 192.168.2.200 this is web1 [root@localhost ~]# curl 192.168.2.200 this is web2 [root@localhost ~]# curl 192.168.2.200 this is web1