Apache

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What is Apache ?

Apache is the most widespread and powerful Open Source HTTP server.

Installing Apache

Download Apache and untar under /usr/local. The documentation is available online. By default apache is installed in /usr/local/apache2. Here we split apache in directories /etc, /usr/local and /var/www. --enable-authnz-ldap and --enable-ldap enable LDAP based authentication, --enable-ssl enables SSL/TLS support, --with-openssl specifies the location of the openssl source and --enable-so is required for PHP, to be installed at the next step.

# groupadd apache
# useradd -g apache apache
# tar -C /usr/local -xvf httpd-x.y.z.txz
# cd /usr/local/httpd*
# ./configure --prefix=/var/www --bindir=/usr/local/bin \
--sbindir=/usr/local/sbin --sysconfdir=/etc/httpd \
--libdir=/usr/local/lib64 --includedir=/usr/local/include \
--datarootdir=/usr/local/share --mandir=/usr/local/man \
--enable-authnz-ldap --enable-ldap --enable-ssl \
--with-openssl=/usr/local/openssl-0.9.8x \
--enable-so --enable-mime-magic
# make
# removepkg /var/log/packages/httpd-x.y.z
# mv /etc/httpd /etc/httpd.0
# make install
# make clean
# cd /var
# chown -R apache:apache www

Configuring Apache

Edit /var/www/conf/httpd.conf to change the User and Group to apache, enter the ServerAdmin e-mail address. To prevent users from viewing directory content, remove the Indexes option in section <Directory "/var/www/htdocs">. Check section <IfModule dir_module> to make sure which file names will be served if a directory is requested (by default index.html).

User apache
Group apache
. . .
ServerAdmin postmaster@inner

<Directory "/var/www/htdocs">
. . .
Options Indexes FollowSymLinks
. . .
</Directory>

<IfModule dir_module>
    DirectoryIndex index.html index.htm index.php
</IfModule>

Running Apache

To automatically launch apache at startup, edit /etc/rc.d/rc.httpd and update the paths to reflect installation of the software under /usr/local/sbin. Give the file execution rights, launch the software using /etc/rc.d/rc.httpd start, check if it's running by a ps -ef | grep httpd, point your browser to http://localhost which should load the apache test page with the message It works!, then open port 80 on the firewall.

# vi /etc/rc.d/rc.httpd
. . .
case "$1" in
  'start')
    /usr/local/sbin/apachectl -k start
  ;;
  'stop')
    /usr/local/sbin/apachectl -k stop
    killall httpd
    rm -f /var/www/logs/httpd/*.pid
  ;;
  'restart')
    /usr/local/sbin/apachectl -k restart
  ;;
  'graceful')
    /usr/local/sbin/apachectl -k graceful
  ;;
  'graceful-stop')
    /usr/local/sbin/apachectl -k graceful-stop
  ;;
  *)
    echo "Usage: $0 {start|stop|restart|graceful|graceful-stop}"
  ;;
esac
:x
# chmod u+x /etc/rc.d/rc.httpd
# /etc/rc.d/rc.httpd start
# ps -ef | grep httpd
root      9875     1  1 07:52 ?        00:00:00 /usr/local/sbin/httpd -k start
apache    9876  9875  0 07:52 ?        00:00:00 /usr/local/sbin/httpd -k start
apache    9877  9875  0 07:52 ?        00:00:00 /usr/local/sbin/httpd -k start
apache    9878  9875  0 07:52 ?        00:00:00 /usr/local/sbin/httpd -k start
apache    9879  9875  0 07:52 ?        00:00:00 /usr/local/sbin/httpd -k start
apache    9880  9875  0 07:52 ?        00:00:00 /usr/local/sbin/httpd -k start
root      9882  3198  0 07:52 pts/1    00:00:00 grep httpd
# vi /etc/rc.d/rc.firewall
. . .
iptables -A INPUT -p tcp -j ACCEPT --dport 80 -m state --state NEW
. . .
:x
# /etc/rc.d/rc.firewall restart

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