目录
一、基于 CentOS 7 构建 LVS-DR 群集
1、准备四台虚拟机
2、配置负载调度器(192.168.2.130)
3、部署共享存储(192.168.2.133)
4、配置两个Web服务器(192.168.2.131、192.168.2.132)
测试集群
二、配置nginx负载均衡。
1、安装部署nginx
2、负载均衡服务器192.168.2.130
3、web1服务器192.168.2.131,web2服务器192.168.2.132
4、配置hosts文件
一、基于 CentOS 7 构建 LVS-DR 群集
1、准备四台虚拟机
ip | 角色 |
---|---|
192.168.2.130 vip:192.168.2.200 | DR服务器 |
192.168.2.131 | Web服务器1 |
192.168.2.132 | Web服务器2 |
192.168.2.133 | NFS服务器 |
2、配置负载调度器(192.168.2.130)
systemctl stop firewalldmodprobe ip_vscat /proc/net/ip_vsyum -y install ipvsadm
(1)配置虚拟IP地址(vip:192.168.2.200)
[root@localhost ~]# cd /etc/sysconfig/network-scripts/[root@localhost network-scripts]# cp ifcfg-ens33 ifcfg-ens33:0[root@localhost network-scripts]# vim ifcfg-ens33:0DEVICE=ens33:0ONBOOT=yesIPADDR=192.168.2.200NETMASK=255.255.255.255[root@localhost network-scripts]# ifup ens33:0[root@localhost network-scripts]# ifconfig ens33:0
(2)调整proc响应参数
[root@localhost ~]# vim /etc/sysctl.confnet.ipv4.ip_forward = 0net.ipv4.conf.all.send_redirects = 0net.ipv4.conf.default.send_redirects = 0net.ipv4.conf.ens33.send_redirects = 0
(3)手工执行配置负载分配策略
[root@localhost ~]# ipvsadm-save > /etc/sysconfig/ipvsadm[root@localhost ~]# systemctl start ipvsadm[root@localhost ~]# ipvsadm -C[root@localhost ~]# ipvsadm -A -t 192.168.2.200:80 -s rr[root@localhost ~]# ipvsadm -a -t 192.168.2.200:80 -r 192.168.2.131:80 -g[root@localhost ~]# ipvsadm -a -t 192.168.2.200:80 -r 192.168.2.132:80 -g[root@localhost ~]# ipvsadm
3、部署共享存储(192.168.2.133)
[root@localhost ~]# systemctl stop firewalld[root@localhost ~]# yum -y install nfs-utils rpcbind[root@localhost ~]# mkdir /opt/blue /opt/summer[root@localhost ~]# chmod 777 /opt/blue /opt/summer[root@localhost ~]# vim /etc/exports/usr/share *(ro,sync)/opt/blue 192.168.2.0/24(rw,sync)/opt/summer 192.168.2.0/24(rw,sync)[root@localhost ~]# systemctl start nfs.service [root@localhost ~]# systemctl start rpcbind.service
4、配置两个Web服务器(192.168.2.131、192.168.2.132)
两个服务器相同的配置步骤
[root@localhost ~]# systemctl stop firewalld[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
[root@localhost network-scripts]# ifup lo:0[root@localhost network-scripts]# ifconfig lo:0
配置主机路由
[root@localhost network-scripts]# route add -host 192.168.2.200 dev lo:0[root@localhost network-scripts]# vim /etc/rc.local/sbin/route add -host 192.168.2.200 dev lo:0[root@localhost network-scripts]# chmod +x /etc/rc.d/rc.local
调整内核的 ARP 响应参数以阻止更新 VIP 的 MAC 地址,避免发生冲突
[root@localhost network-scripts]# vim /etc/sysctl.confnet.ipv4.conf.lo.arp_ignore = 1net.ipv4.conf.lo.arp_announce = 2net.ipv4.conf.all.arp_ignore = 1net.ipv4.conf.all.arp_announce = 2
[root@localhost network-scripts]# yum -y install nfs-utils rpcbind httpd lsof[root@localhost network-scripts]# systemctl start rpcbind[root@localhost network-scripts]# systemctl start httpd[root@localhost network-scripts]# lsof -i:80[root@localhost network-scripts]# showmount -e 192.168.2.133
--192.168.2.131---mount.nfs 192.168.2.131:/opt/blue /var/www/htmlecho 'this is 131 web' > /var/www/html/index.html--192.168.2.132---mount.nfs 192.168.2.132:/opt/summer /var/www/htmlecho 'this is 132 web' > /var/www/html/index.html
测试集群
二、配置nginx负载均衡。
1、安装部署nginx
2、负载均衡服务器192.168.2.130
[root@localhost ~]# vim /etc/nginx/conf.d/nginx.conf server{listen 80;server_name www.first.com;location /{proxy_pass http://web_server; }}upstream web_server{server 192.168.2.131;server 192.168.2.132;}
3、web1服务器192.168.2.131,web2服务器192.168.2.132
[root@localhost ~]# echo "Welcome to 131 server:192.168.2.131" > /root/index.html[root@localhost ~]# echo "Welcome to 132 server:192.168.2.132" > /root/index.html
4、配置hosts文件
192.168.2.130 www.first.com