目录
- 一、搭建的坏境
- 二、配置负载调度器
- 三、节点服务器配置
一、搭建的坏境
#环境简介
DR 服务器：192.168.111.50
web 服务器1：192.168.111.51
web 服务器2：192.168.111.53
vip（虚拟回环）：192.168.111.188
客户端：192.168.111.200
二、配置负载调度器
systemctl stop firewalld.service
setenforce 0
[root@localhost ~]#systemctl stop firewalld.service
[root@localhost ~]#setenforce 0
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
[root@localhost ~]#yum install ipvsadm.x86_64 -y
#安装服务
#配置虚拟IP地址（VIP：192.168.111.188）
[root@localhost network-scripts]#cp ifcfg-ens33 ifcfg-ens33:0
#配置虚拟网卡，若为隧道模式ifcfg-tunl0
[root@localhost network-scripts]#vim ifcfg-ens33:0
#删除dns与网关，注意子网
NAME=ens33:0
DEVICE=ens33:0
IPADDR=192.168.111.188
NETMASK=255.255.255.255
[root@localhost network-scripts]#systemctl restart network
[root@localhost network-scripts]#ifup ifcfg-ens33:0
#启动网卡
[root@localhost network-scripts]#ifconfig ifcfg-ens33:0
#调整/proc响应参数
[root@localhost network-scripts]# vi /etc/sysctl.conf
net.ipv4.ip_forward = 0
net.ipv4.conf.all.send_redirects = 0
net.ipv4.conf.default.send_redirects = 0
net.ipv4.conf.ens33.send_redirects = 0
[root@localhost network-scripts]#sysctl -p
#刷新配置
#调整/proc响应参数 对于 DR 群集模式来说，由于 LVS 负载调度器和各节点需要共用 VIP 地址，应该关闭 Linux 内核的重定向参数响应服务器不是一台路由器，那么它不会发送重定向，所以可以关闭该功能
#配置负载分配策略
[root@localhost ~]#modprobe ip_vs
[root@localhost ~]#cat /proc/net/ip_vs
#加载模块
[root@localhost network-scripts]#ipvsadm-save >/etc/sysconfig/ipvsadm
[root@localhost network-scripts]#systemctl start ipvsadm.service
[root@localhost network-scripts]#ipvsadm -C
[root@localhost ~]#ipvsadm -A -t 192.168.111.188:80 -s rr
[root@localhost ~]#ipvsadm -a -t 192.168.111.188:80 -r 192.168.111.51:80 -g
[root@localhost ~]#ipvsadm -a -t 192.168.111.188:80 -r 192.168.111.53:80 -g
#添加真实服务器-a 指定VIP地址及TCP端口-t 指定RIP地址及TCP端口 -r 指定DR模式-g
[root@localhost network-scripts]#ipvsadm
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
TCP localhost.localdomain:http rr
-> 192.168.111.51:http Route 1 0 0
-> 192.168.111.53:http Route 1 0 0
[root@localhost network-scripts]#ipvsadm-save >/etc/sysconfig/ipvsadm
#保存设置
三、节点服务器配置
节点1
[root@localhost ~]#systemctl stop firewalld.service
[root@localhost ~]#setenforce 0
[root@localhost ~]#yum install httpd -y
[root@localhost ~]#systemctl start httpd
[root@localhost ~]#cd /etc/sysconfig/network-scripts/
[root@localhost network-scripts]#cp ifcfg-lo ifcfg-lo:0
#临时
[root@localhost network-scripts]# ifconfig lo:0 192.168.111.188 netmask 255.255.255.255
#永久
[root@localhost network-scripts]#vim ifcfg-lo:0
#修改回环网卡名，IP地址，子网掩码
DEVICE=lo:0
IPADDR=192.168.111.188
NETMASK=255.255.255.255
NETWORK=127.0.0.0
[root@localhost network-scripts]#route add -host 192.168.111.188 dev lo:0
#设置路由
[root@localhost network-scripts]#route -n
#开机执行命令，或者写入 /etc/profile 文件
[root@localhost network-scripts]#vim /etc/rc.d/rc.local
/usr/sbin/route add -host 192.168.111.188 dev lo:0
[root@localhost network-scripts]#chmod +x /etc/rc.d/rc.local
[root@localhost network-scripts]#ll /etc/rc.d/rc.local
-rwxr-xr-x. 1 root root 484 11月 17 16:56 /etc/rc.d/rc.local
[root@localhost network-scripts]#vim /etc/sysctl.conf
#添加系统只响应目的IP为本地IP的ARP请求
#系统不使用原地址来设置ARP请求的源地址，而是物理mac地址上的IP
[root@localhost network-scripts]#sysctl -p
net.ipv4.conf.all.arp_ignore = 1
net.ipv4.conf.all.arp_announce = 2
net.ipv4.conf.default.arp_ignore = 1
net.ipv4.conf.default.arp_announce = 2
net.ipv4.conf.lo.arp_ignore = 1
net.ipv4.conf.lo.arp_announce = 2
节点2
[root@localhost ~]#systemctl stop firewalld.service
[root@localhost ~]#setenforce 0
[root@localhost ~]#yum install httpd -y
[root@localhost ~]#systemctl start httpd
[root@localhost ~]#cd /etc/sysconfig/network-scripts/
[root@localhost network-scripts]#cp ifcfg-lo ifcfg-lo:0
[root@localhost network-scripts]#vim ifcfg-lo:0
#修改回环网卡名，IP地址，子网掩码
DEVICE=lo:0
IPADDR=192.168.111.188
NETMASK=255.255.255.255
NETWORK=127.0.0.0
[root@localhost network-scripts]# systemctl restart network
[root@localhost network-scripts]#route add -host 192.168.111.188 dev lo:0
#设置路由
[root@localhost network-scripts]#route -n
#开机执行命令，或者写入 /etc/profile 文件
[root@localhost network-scripts]#vim /etc/rc.d/rc.local
/usr/sbin/route add -host 192.168.111.188 dev lo:0
[root@localhost network-scripts]#chmod +x /etc/rc.d/rc.local
[root@localhost network-scripts]#ll /etc/rc.d/rc.local
-rwxr-xr-x. 1 root root 484 11月 17 16:56 /etc/rc.d/rc.local
[root@localhost network-scripts]#vim /etc/sysctl.conf
#添加系统只响应目的IP为本地IP的ARP请求
#系统不使用原地址来设置ARP请求的源地址，而是物理mac地址上的IP
[root@localhost network-scripts]#sysctl -p
net.ipv4.conf.all.arp_ignore = 1
net.ipv4.conf.all.arp_announce = 2
net.ipv4.conf.default.arp_ignore = 1
net.ipv4.conf.default.arp_announce = 2
net.ipv4.conf.lo.arp_ignore = 1
net.ipv4.conf.lo.arp_announce = 2
