LVS负载均衡群集实战详细介绍
下文给大家带来LVS负载均衡群集实战详细介绍,希望能够给大家在实际运用中带来一定的帮助,负载均衡涉及的东西比较多,理论也不多,网上有很多书籍,今天我们就用创新互联在行业内累计的经验来做一个解答。
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LVS负载均衡群集
环境准备:
CentOS 7-1:调度器,网关(需要两块网卡)外:12.0.0.1 内:192.168.200.1
CentOS 7-2:网站云服务器(Apache)192.168.200.110
CentOS 7-3:网站云服务器(Apache)192.168.200.120
CentOS 7-4:提供共享存储 192.168.200.130
win7-1:客户端 12.0.0.12
yum在线安装前置操作:
1.共享存储服务器CentOS 7-4的操作:
[root@localhost ~]# rpm -q nfs-utils
nfs-utils-1.3.0-0.48.el7.x86_64
[root@localhost ~]# rpm -q rpcbind
rpcbind-0.2.0-42.el7.x86_64
2.节点服务器CentOS 7-2和7-3两台节点服务器:
[root@localhost ~]# yum install httpd -y
3.调度器网关CentOS 7-1操作:
//要先添加一个网络适配器,成为两个网卡
[root@localhost ~]# yum install ipvsadm -y
共享存储服务器CentOS 7-4:
//先将网卡更改为仅主机模式
[root@localhost ~]# vim /etc/sysconfig/network-scripts/ifcfg-ens33
BOOTPROTO="static" //将dhcp改为static
DEVICE="ens33"
ONBOOT="yes"
IPADDR=192.168.200.130 //在末行下插入:IP,子网,网关
NETMASK=255.255.255.0
GATEWAY=192.168.200.1
修改完成后输入:wq保存退出
[root@localhost ~]# service network restart
Restarting network (via systemctl): [ 确定 ]
[root@localhost ~]# systemctl stop firewalld.service
[root@localhost ~]# setenforce 0
[root@localhost ~]# systemctl start nfs.service
[root@localhost ~]# systemctl status nfs.service
● nfs-server.service - NFS server and services
Loaded: loaded (/usr/lib/systemd/system/nfs-server.service; disabled; vendor preset: disabled)
Active: active (exited) since 二 2019-11-26 17:42:05 CST; 11s ago
......省略多行,状态为Active说明正常
[root@localhost ~]# systemctl start rpcbind.service
[root@localhost ~]# systemctl status rpcbind.service
● rpcbind.service - RPC bind service
Loaded: loaded (/usr/lib/systemd/system/rpcbind.service; indirect; vendor preset: enabled)
Active: active (running) since 二 2019-11-26 17:40:23 CST; 4min 26s ago
......省略多行,状态为Active说明正常
[root@localhost ~]# vim /etc/exports
/usr/share *(ro,sync)
/opt/accp 192.168.200.0/24(rw,sync)
/opt/benet 192.168.200.0/24(rw,sync)
//加入以上内容之后输入:wq保存退出
[root@localhost ~]# cd /opt/
[root@localhost opt]# mkdir benet accp
[root@localhost opt]# chmod 777 accp/ benet/ //提升权限
[root@localhost opt]# exportfs -rv //进行发布
exporting 192.168.200.0/24:/opt/benet
exporting 192.168.200.0/24:/opt/accp
exporting *:/usr/share
节点服务器(CentOS 7-2)上的操作:
[root@localhost ~]# vim /etc/sysconfig/network-scripts/ifcfg-ens33
BOOTPROTO="static" //将dhcp改为static
DEVICE="ens33"
ONBOOT="yes"
IPADDR=192.168.200.110 //在末行下插入:IP,子网,网关
NETMASK=255.255.255.0
GATEWAY=192.168.200.1
修改完成后输入:wq保存退出
[root@localhost ~]# service network restart
Restarting network (via systemctl): [ 确定 ]
[root@localhost ~]# systemctl stop firewalld.service
[root@localhost ~]# setenforce 0
[root@localhost ~]# systemctl start httpd.service
[root@localhost ~]# netstat -ntap | grep 80
tcp6 0 0 :::80 :::* LISTEN 7315/httpd
//设置网络适配器为仅主机
[root@localhost ~]# ping 192.168.200.130
PING 192.168.200.130 (192.168.200.130) 56(84) bytes of data.
64 bytes from 192.168.200.130: icmp_seq=1 ttl=64 time=0.754 ms
64 bytes from 192.168.200.130: icmp_seq=2 ttl=64 time=0.368 ms
64 bytes from 192.168.200.130: icmp_seq=3 ttl=64 time=0.398 ms
[root@localhost ~]# showmount -e 192.168.200.130
Export list for 192.168.200.130:
/usr/share *
/opt/benet 192.168.200.0/24
/opt/accp 192.168.200.0/24
[root@localhost ~]# mount.nfs 192.168.200.130:/opt/accp /var/www/html/ //挂载
[root@localhost ~]# cd /var/www/html/
[root@localhost html]# echo "this is accp web" > index.html //写首页内容
此时回到存储服务器CentOS 7-4上看是否有此文件:
[root@localhost ~]# cd /opt/
[root@localhost opt]# ls
accp benet rh
[root@localhost opt]# cd accp/
[root@localhost accp]# ls
index.html
[root@localhost accp]# cat index.html
this is accp web
//此时有我们新建的index.html文件
此时,在CentOS 7-2节点服务器上使用火狐浏览器输入:127.0.0.1看是否可以显示我们写入的网页内容:
节点服务器(CentOS 7-3)上的操作:
[root@localhost ~]# vim /etc/sysconfig/network-scripts/ifcfg-ens33
BOOTPROTO="static" //将dhcp改为static
DEVICE="ens33"
ONBOOT="yes"
IPADDR=192.168.200.120 //在末行下插入:IP,子网,网关
NETMASK=255.255.255.0
GATEWAY=192.168.200.1
//修改完成后输入:wq保存退出
[root@localhost ~]# service network restart
Restarting network (via systemctl): [ 确定 ]
[root@localhost ~]# systemctl stop firewalld.service
[root@localhost ~]# setenforce 0
[root@localhost ~]# systemctl start httpd.service
[root@localhost ~]# netstat -ntap | grep 80
tcp6 0 0 :::80 :::* LISTEN 7315/httpd //设置网络适配器为仅主机
[root@localhost ~]# ping 192.168.200.130
PING 192.168.200.130 (192.168.200.130) 56(84) bytes of data.
64 bytes from 192.168.200.130: icmp_seq=1 ttl=64 time=0.532 ms
64 bytes from 192.168.200.130: icmp_seq=2 ttl=64 time=1.01 ms
64 bytes from 192.168.200.130: icmp_seq=3 ttl=64 time=0.940 ms
[root@localhost ~]# showmount -e 192.168.200.130
Export list for 192.168.200.130:
/usr/share *
/opt/benet 192.168.200.0/24
/opt/accp 192.168.200.0/24
[root@localhost ~]# mount.nfs 192.168.200.130:/opt/benet /var/www/html/
[root@localhost ~]# cd /var/www/html/
[root@localhost html]# echo "this is benet web" > index.html
此时回到存储服务器CentOS 7-4上看是否有此文件:
[root@localhost ~]# cd /opt/
[root@localhost opt]# ls
accp benet rh
[root@localhost opt]# cd accp/
[root@localhost accp]# ls
index.html
[root@localhost accp]# cat index.html
this is benet web
//此时有我们新建的index.html文件
验证:在CentOS 7-3节点服务器上使用火狐浏览器输入:127.0.0.1看是否可以显示我们写入的网页内容
调度,网关服务器CentOS 7-1的操作:
[root@localhost ~]# cd /etc/sysconfig/network-scripts/
[root@localhost network-scripts]# cp ifcfg-ens33 ifcfg-ens36
[root@localhost network-scripts]# vim ifcfg-ens36
BOOTPROTO="static" //将dhcp改为static
NAME="ens36" //把名称改为ens36
UUID号删除
DEVICE="ens36" //把名称改为ens36
ONBOOT="yes"
IPADDR=12.0.0.1 //在末行下插入:IP,子网
NETMASK=255.255.255.0
//修改完成后输入:wq保存退出
[root@localhost network-scripts]# vim ifcfg-ens33
BOOTPROTO="static" //将dhcp改为static
DEVICE="ens33"
ONBOOT="yes" //在末行下插入:IP,子网
IPADDR=192.168.200.1
NETMASK=255.255.255.0
//修改完成后输入:wq保存退出
[root@localhost network-scripts]# service network restart
Restarting network (via systemctl): [ 确定 ]
[root@localhost network-scripts]# vim /etc/sysctl.conf
//在最后一行按o转下行插入
net.ipv4.ip_forward=1
//修改完成后输入:wq保存退出
[root@localhost network-scripts]# sysctl -p
net.ipv4.ip_forward = 1
[root@localhost network-scripts]# iptables -t nat -F
[root@localhost network-scripts]# iptables -F
[root@localhost network-scripts]# iptables -t nat -A POSTROUTING -o ens36 -s 192.168.200.0/24 -j SNAT --to-source 12.0.0.1
win7-1中验证转发:
先把网卡设置为仅主机模式,网卡配置为静态地址,同时关闭防火墙:
加载LVS内核模块:
[root@localhost network-scripts]# modprobe ip_vs
[root@localhost network-scripts]# cat /proc/net/ip_vs
IP Virtual Server version 1.2.1 (size=4096)
Prot LocalAddress:Port Scheduler Flags
-> RemoteAddress:Port Forward Weight ActiveConn InActConn
启动服务:(注意:在CentOS 7中必须要先保存在启动服务,否则会报错!!!)
[root@localhost network-scripts]# ipvsadm --save > /etc/sysconfig/ipvsadm
[root@localhost network-scripts]# systemctl start ipvsadm.service
编写配置规则:
[root@localhost network-scripts]# cd /opt/
[root@localhost opt]# vim nat.sh
#!/bin/bash
ipvsadm -C //清除内核虚拟服务器表中的所有记录
ipvsadm -A -t 12.0.0.1:80 -s rr //添加新的虚拟的服务器
ipvsadm -a -t 12.0.0.1:80 -r 192.168.200.110:80 -m
ipvsadm -a -t 12.0.0.1:80 -r 192.168.200.120:80 -m
ipvsadm
//输入完成后输入:wq保存退出
[root@localhost opt]# source nat.sh
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
-> 129.168.200.110:http Masq 1 0 0
-> 129.168.200.120:http Masq 1 0 0
验证:使用win7-1客户终端访问12.0.0.1,看是否可以成功:
看了以上关于LVS负载均衡群集实战详细介绍,如果大家还有什么地方需要了解的可以在创新互联行业资讯里查找自己感兴趣的或者找我们的专业技术工程师解答的,创新互联技术工程师在行业内拥有十几年的经验了。
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