Category: Apache

Set X-Robots-Tag in Apache

August 10, 2012

The X-Robots-Tag HTTP header can be used to send directives to Google and other search engines. See this page for a discussion from Google: https://developers.google.com/webmasters/control-crawl-index/docs/robots_meta_tag In Apache you can implement the X-Robots-Tag using the Header directive. For example the following code will mark PDF documents as “noindex, nofollow”:


<Files ~ "\.pdf$">
Header set X-Robots-Tag "noindex, nofollow"
</Files>

Header set X-Robots-Tag "noindex, nofollow"

</Files>

Install PHP SSH2 extension on RHEL 5.6 with EPEL repository

May 10, 2012

Here are the steps to install the PHP SSH2 extention on RHEL 5.6 with the EPEL repository. Install packages that may be needed:


yum install php-pear php-devel libssh2 libssh2-devel

yum install php-pear php-devel libssh2 libssh2-devel

Temporarily allow binary execution in /tmp


mount -o remount,exec /tmp

mount -o remount,exec /tmp

Install the extension:


pecl install channel://pecl.php.net/ssh2-0.11.3

pecl install channel://pecl.php.net/ssh2-0.11.3

Restore /tmp restrictions:


mount -o remount,noexec /tmp

mount -o remount,noexec /tmp

Reload apache:


/sbin/service httpd reload

/sbin/service httpd reload

Insert Varnish Cache With NAT Rule

November 8, 2011

Here’s a simple nat rule for iptables that will route incoming web traffic to your varnish cache. This allows you to implement varnish without reconfiguring apache. In the varnish config, set the backing do be 127.0.0.1:80.


iptables -D PREROUTING -s ! 127.0.0.1 -d 192.168.100.16 \
   -p tcp -m tcp --dport 80 -j DNAT \
   --to-destination 192.168.100.16:6081 -t nat

iptables -D PREROUTING -s ! 127.0.0.1 -d 192.168.100.16 \

-p tcp -m tcp --dport 80 -j DNAT \

--to-destination 192.168.100.16:6081 -t nat

Here’s a different rule that also seems to work:


/sbin/iptables  -t nat -A PREROUTING \
   -i eth0 -d 46.105.124.96 -p tcp -m tcp \
   --dport 80 -j REDIRECT 6081

/sbin/iptables -t nat -A PREROUTING \

-i eth0 -d 46.105.124.96 -p tcp -m tcp \

--dport 80 -j REDIRECT 6081

Manage Apache Modules On Ubuntu

June 7, 2011

Configuration for enable modules is stored in: /etc/apache2/mods-enabled Available but inactive modules are stored in: /etc/apache2/mods-available A module can be enabled with:

a2enmod [modulename]

1	a2enmod [modulename]

Where [modulename] is the module to be enabled. For example:

a2enmod rewrite

1	a2enmod rewrite

will enable the rewrite module. A module can be disabled in a similar fashion with:

a2dismod [modulename]

1	a2dismod [modulename]

Don’t forget to restart apache after making changes with:

service apache2 restart

1	service apache2 restart

Install WordPress on Ubuntu virtual server at Media Temple

May 25, 2011

Server is a MediaTemple “ve” server which is a Parallels Virtuozzo container with Ubuntu 10.04 LTS Lucid installed as the operating system. The first step is to install packages:


apt-get update
apt-get install mysql-server
apt-get install apache2
apt-get install php5
apt-get install php5-mysql

apt-get update

apt-get install mysql-server

apt-get install apache2

apt-get install php5

apt-get install php5-mysql

Now set mysql service to start automatically:


update-rc.d mysql defaults
service mysql start

update-rc.d mysql defaults

service mysql start

Next create a database for wordpress:


mysql -p -u root
create database wordpress;
grant all privileges on wordpress.* to 'wordpress'@'localhost' identified by 'YOURNEWPASS';
flush privileges;
exit;

mysql -p -u root

create database wordpress;

grant all privileges on wordpress.* to 'wordpress'@'localhost' identified by 'YOURNEWPASS';

flush privileges;

exit;

Next we’ll download and install wordpress:


cd /root
wget http://wordpress.org/latest.tar.gz
tar -xvzf /root/latest.tar.gz
rsync -avz wordpress/ /var/www/
rm /var/www/index.html
cp /var/www/wp-config-sample.php /var/www/wp-config.php

cd /root

wget http://wordpress.org/latest.tar.gz

tar -xvzf /root/latest.tar.gz

rsync -avz wordpress/ /var/www/

rm /var/www/index.html

cp /var/www/wp-config-sample.php /var/www/wp-config.php

Now set the database credentials in /var/www/wp-config.php:


replace 'database_name_here' 'wordpress' -- /var/www/wp-config.php
replace 'username_here' 'wordpress' -- /var/www/wp-config.php
replace 'password_here' 'YOURNEWPASS' -- /var/www/wp-config.php