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下文給大家帶來LVS負載均衡群集實戰詳細介紹,希望能夠給大家在實際運用中帶來一定的幫助,負載均衡涉及的東西比較多,理論也不多,網上有很多書籍,今天我們就用億速云在行業內累計的經驗來做一個解答。
環境準備:
CentOS 7-1:調度器,網關(需要兩塊網卡)外:12.0.0.1 內:192.168.200.1
CentOS 7-2:網站云服務器(Apache)192.168.200.110
CentOS 7-3:網站云服務器(Apache)192.168.200.120
CentOS 7-4:提供共享存儲 192.168.200.130
win7-1:客戶端 12.0.0.12
1.共享存儲服務器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.節點服務器CentOS 7-2和7-3兩臺節點服務器:
[root@localhost ~]# yum install httpd -y
3.調度器網關CentOS 7-1操作:
//要先添加一個網絡適配器,成為兩個網卡
[root@localhost ~]# yum install ipvsadm -y
//先將網卡更改為僅主機模式
[root@localhost ~]# vim /etc/sysconfig/network-scripts/ifcfg-ens33
BOOTPROTO="static" //將dhcp改為static
DEVICE="ens33"
ONBOOT="yes"
IPADDR=192.168.200.130 //在末行下插入:IP,子網,網關
NETMASK=255.255.255.0
GATEWAY=192.168.200.1
修改完成后輸入:wq保存退出
[root@localhost ~]# service network restart
Restarting network (via systemctl): [ 確定 ]
[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,狀態為Active說明正常
[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,狀態為Active說明正常
[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)
//加入以上內容之后輸入:wq保存退出
[root@localhost ~]# cd /opt/
[root@localhost opt]# mkdir benet accp
[root@localhost opt]# chmod 777 accp/ benet/ //提升權限
[root@localhost opt]# exportfs -rv //進行發布
exporting 192.168.200.0/24:/opt/benet
exporting 192.168.200.0/24:/opt/accp
exporting *:/usr/share
[root@localhost ~]# vim /etc/sysconfig/network-scripts/ifcfg-ens33
BOOTPROTO="static" //將dhcp改為static
DEVICE="ens33"
ONBOOT="yes"
IPADDR=192.168.200.110 //在末行下插入:IP,子網,網關
NETMASK=255.255.255.0
GATEWAY=192.168.200.1
修改完成后輸入:wq保存退出
[root@localhost ~]# service network restart
Restarting network (via systemctl): [ 確定 ]
[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
//設置網絡適配器為僅主機
[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/ //掛載
[root@localhost ~]# cd /var/www/html/
[root@localhost html]# echo "this is accp web" > index.html //寫首頁內容
此時回到存儲服務器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
//此時有我們新建的index.html文件
此時,在CentOS 7-2節點服務器上使用火狐瀏覽器輸入:127.0.0.1看是否可以顯示我們寫入的網頁內容:
[root@localhost ~]# vim /etc/sysconfig/network-scripts/ifcfg-ens33
BOOTPROTO="static" //將dhcp改為static
DEVICE="ens33"
ONBOOT="yes"
IPADDR=192.168.200.120 //在末行下插入:IP,子網,網關
NETMASK=255.255.255.0
GATEWAY=192.168.200.1
//修改完成后輸入:wq保存退出
[root@localhost ~]# service network restart
Restarting network (via systemctl): [ 確定 ]
[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 //設置網絡適配器為僅主機
[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
此時回到存儲服務器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
//此時有我們新建的index.html文件
[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" //將dhcp改為static
NAME="ens36" //把名稱改為ens36
UUID號刪除
DEVICE="ens36" //把名稱改為ens36
ONBOOT="yes"
IPADDR=12.0.0.1 //在末行下插入:IP,子網
NETMASK=255.255.255.0
//修改完成后輸入:wq保存退出
[root@localhost network-scripts]# vim ifcfg-ens33
BOOTPROTO="static" //將dhcp改為static
DEVICE="ens33"
ONBOOT="yes" //在末行下插入:IP,子網
IPADDR=192.168.200.1
NETMASK=255.255.255.0
//修改完成后輸入:wq保存退出
[root@localhost network-scripts]# service network restart
Restarting network (via systemctl): [ 確定 ]
[root@localhost network-scripts]# vim /etc/sysctl.conf
//在最后一行按o轉下行插入
net.ipv4.ip_forward=1
//修改完成后輸入: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
[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
[root@localhost network-scripts]# ipvsadm --save > /etc/sysconfig/ipvsadm
[root@localhost network-scripts]# systemctl start ipvsadm.service
[root@localhost network-scripts]# cd /opt/
[root@localhost opt]# vim nat.sh
#!/bin/bash
ipvsadm -C //清除內核虛擬服務器表中的所有記錄
ipvsadm -A -t 12.0.0.1:80 -s rr //添加新的虛擬的服務器
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
//輸入完成后輸入: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
看了以上關于LVS負載均衡群集實戰詳細介紹,如果大家還有什么地方需要了解的可以在億速云行業資訊里查找自己感興趣的或者找我們的專業技術工程師解答的,億速云技術工程師在行業內擁有十幾年的經驗了。
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