How to install Apache
There are numerous ways of installing the package or application. There are enlisted below -
The apache web server is a modular application where the administrator can choose the required functionality and install different modules as per his/her requirement.
All modules can be compiled as a Dynamic Shared Objects (DSO is an object file that could be shared by multiple apps while they are executing) that exists separately from the main apache file. The DSO approach is highly recommended, it makes the task of adding/removing/updating modules from the servers configuration very simple.
APACHE INSTALLATION ON LINUX PLATFORM
On Red Hat or rpm based systems
If you are using an rpm (RedHat Package Manager is a utility for installing application on Linux systems) based Linux distribution i.e. Red Hat, Fedora, CentOs, Suse, you can install this application by either vendor specific Package Manager or directly building the rpm file from the available source tarball.
You can install Apache via the default Package Manager available on all Red Hat based distributions like CentOs, Red Hat and Fedora.
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[root@amsterdam ~]# yum install httpd |
The apache source tarball could be converted into an rpm file using the following command.
[root@amsterdam ~]# rpmbuild -tb httpd-2.4.x.tar.bz2It is mandatory to have -devel package installed on your server for creating .rpm file from source.
Once you convert the source file into an rpm installer, you could use the following command to install Apache.
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[root@amsterdam ~]# rpm –ivh httpd-2.4.4-3.1.x86_64.rpm |
After the installation the server does not start automatically, in order to start the service, you have to use any of the following command on Fedora, CentOs or Red Hat.
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[root@amsterdam ~]# /usr/sbin/apachectl start[root@amsterdam ~]# service httpd start[root@amsterdam ~]# /etc/init.d/httpd start |
Installing Apache from Source
Installing apache from the source require the –devel package to be installed on your server. .You can find the latest available version of Apache, you can download it here . Once you download the source file move it to the /usr/local/src folder.
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[root@amserversterdam ~] cd /usr/local/src[root@amserversterdam ~] gzip -d httpd-2.2.26.tar.gz[root@amserversterdam ~] tar xvf httpd-2.2.26.tar[root@amserversterdam ~] httpd-2.2.26 |
In order to see all configuration option available for Apache, you can use ./configure –help option. The most common configuration option is –prefix={install directory name}.
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[root@amserversterdam ~]./configure --help[root@amserversterdam ~]./configure –prefix=/usr/local/apache –enable-so[root@amserversterdam ~] make[root@amserversterdam ~] make install |
The above example shows the compilation of Apache within the /usr/local/apache directory with the DSO capability. The –enable-so option, can load required modules to apache at run time via the DSO mechanism rather than requiring a recompilation.
Once the installation completes, you can browse the web servers default page with your favorite browser. If firewall is enabled on your server, you must have to make exception for port 80 on your OS firewall. You can use the following command to open port 80.
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iptables -I INPUT -p tcp --dport 80 -j ACCEPT |
service iptables save
You can see the default Apache Welcome screen by browsing your server IP address.