Lvs-nat Load Balancing Experiment

Build network environment:

Two RS hosts, the virtual machine NIC is set to host only mode:

RS1 Network card: 192.168.1.11

RS2 Network card: 192.168.1.12

A dispatcher, Nic 1 is set to Network Bridge, Nic 2 is set to host mode only;

Nic 1:vip:172.18.11.111

Nic 2:dip:192.168.1.1

Install the Web service and provide a test page:

Set the RS1 and RS2 hosts separately

]# vim/var/www/html/index.html

]# vim/var/www/html/index.html

Point the gateway to the dip on both RS:

]# route add default GW 192.168.1.1

To operate on Director:

Turn on the network card core forwarding function, permanently valid:

]# vim/etc/sysctl.conf

Net.ipv4.ip_forward = 1

]# Sysctl-p Reread the configuration file to make the settings effective

At this time, in the director of separate stand-alone test, Access RS1, RS2;

]# Curl http://192.168.10.11

]# Curl http://192.168.10.12

Set up cluster rules in director:

]# ipvsadm-a-T 172.18.11.111:80-s RR

]# ipvsadm-a-T 172.18.11.111:80-r 192.168.1.11-m

]# ipvsadm-a-T 172.18.11.111:80-r 192.168.1.12-m

To test the cluster schedule in a virtual machine: Access VIP:

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The above completed a scheduler, can be scheduled for the back end of the 2 real servers;

Next, build PHP services, deploy a forum program Discuz_x3.1_sc_utf8.zip, and do shared storage to build a database:

MYSQ database Nic 2 is set to host only

Nic 2:192.168.1.14

Database Host:

Install MARIADB, create discuz user, password discuz and authorize to two RS:

]# yum-y Install Mairadb-server

]# systemctl Start Mairad.servic

]# MySQL

> GRANT All on * * to [e-mail protected] identified by ' discuz ';

> GRANT All on * * to [e-mail protected] identified by ' discuz ';

> CREATE DATABASE discuzdb;

On both RS:

Install PHP package PHP as HTTP module work, and then install the Php-mysql package so that PHP call MySQL interface to communicate with the MySQL database;

]# yum-y Install PHP php-mysql

Use NFS services on RS2 to provide shared storage, install Nfs-utils, and start NFS services

]# yum-y Install Nfs-utils

]# systemctl Start Nfs.service

Create a shared directory on RS2 and export:

]# mkdir/php

]# Vim/etc/exports

/php 192.168.1.0/24 (Rw,no_root_squash)

]# Exportfs-r

On RS1, mount the shared directory for the RS2 export:

]# mkdir/php

]# mount-t NFS 192.168.1.12:/php/php

Change the HTTP configuration file on both RS:

]# vim/etc/httpd/conf/httpd.conf

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At this time, the/php directory on the two RS has been successfully shared directory;

Under this directory, create a PHP test page:

]# vim/php/index.php

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Can be entered in Test browser: 172.18.11.111

Show:

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Then test the PHP connection to MySQL's test page:

]# vim/php/index.php

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Can be entered in Test browser: 172.18.11.111

Show:

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Installation Forum program Discuz_x3.1_sc_utf8.zip;

]# cd/php

]# Unzip Discuz_x3.1_sc_utf8.zip

]# chmod-r o+w config data uc_client uc_server

Can be entered in Test browser: 172.18.11.111/upload

Show:

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Click, "I Agree"

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Click "Next", you can go all the way down;

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Enter the IP address of the database and set the login user, password, etc.;

Administrator information, you can fill in freely;

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At this point, complete the deployment;

Lvs-nat Load Balancing Experiment