Install Apache Webserver in CentOS 6.3 & RHEL
In this how-to tutorial I’ll show you how to install Apache and host a sample website using Apache.
Scenario
In this how-to tutorial, my test scenario setup are as follows
Webserver Details:
Operating System : CentOS 6.3 32bit server Hostname : web.example.com IP Address : 192.168.1.250
Client Details:
Operating System : CentOS 6.3 32bit Desktop Hostname : client.example.com IP Address : 192.168.1.251
I already have a DNS server in my setup and i had properly configured the DNS server with both server and client details.
Server side configuration
Prerequisites:
1. Set the hostname of web server
[root@web ~]# vi /etc/sysconfig/network NETWORKING=yes HOSTNAME=web.example.com
2. Add the webserver hostname in ‘etc/hosts’ file
[root@web ~]# vi /etc/hosts 127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 192.168.1.250 web.example.com 192.168.1.250 www.example.com
3. Install Apache
Check and remove any previously installed packages
[root@web ~]# rpm -qa | grep httpd
or
[root@web ~]# yum list installed | grep httpd
Now install the ‘httpd’ package
[root@web ~]# yum install httpd* -y
4. Configure Apache
[root@web ~]# vi /etc/httpd/conf/httpd.conf ## line no 262 - Set the server admin mail id which is used to receive mail generated by apache ## ServerAdmin root@ostechnix.com ## line no 276 - Set the website name ## ServerName www.ostechnix.com:80 ## line no 292 - Set the web pages folder ## DocumentRoot "/var/www/html" ## line no 402 - Sent the index or home page of the website ## DirectoryIndex ostechnix.html
5. Create a sample index or home page
Create the index or home page html file in the ‘/var/www/html/’ directory
[root@web ~]# vi /var/www/html/example.html <html> <body bgcolor=blue> <h1> Welcome to EXAMPLE Website </h1> </body> </html>
6. Allow webserver through firewall
[root@web ~]# vi /etc/sysconfig/iptables # Firewall configuration written by system-config-firewall # Manual customization of this file is not recommended. *filter :INPUT ACCEPT [0:0] :FORWARD ACCEPT [0:0] :OUTPUT ACCEPT [0:0] -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT -A INPUT -p icmp -j ACCEPT -A INPUT -i lo -j ACCEPT -A INPUT -p tcp -m state --state NEW --dport 80 -j ACCEPT -A INPUT -p tcp -m state --state NEW --dport 80 -j ACCEPT -A INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT -A INPUT -j REJECT --reject-with icmp-host-prohibited -A FORWARD -j REJECT --reject-with icmp-host-prohibited COMMIT
Restart iptables to save changes
[root@web ~]# service iptables restart iptables: Flushing firewall rules: [ OK ] iptables: Setting chains to policy ACCEPT: filter [ OK ] iptables: Unloading modules: [ OK ] iptables: Applying firewall rules: [ OK ]
7. Start Apache web server
[root@web ~]# service httpd start Starting httpd: [ OK ] [root@web ~]# chkconfig httpd on
Client side Configuration
1. Add the webserver and client ip address and hostname in the ‘/etc/hosts’ file
[root@client ~]# vi /etc/hosts 127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 192.168.1.251 client.ostechnix.com 192.168.1.250 www.ostechnix.com
2. Check Apache webserver
Open the firefox in client and type http://www.example.com in the address bar. The index page of example website will open now.
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