Posts Tagged ‘apache’
How to force caching headers with apache and squid reverse proxy
If you use a squid reverse proxy in front of your apache webserver to reduce the load, it might happen that pages are not cached correctly because the website script running on the apache webserver sends wrong caching headers. I had this problem with a wordpress install, wordpress had always send pragma no-cache headers with the pages so squid reported a cache miss for every page request. A simple solution for this is to use apache mod_headers to delete the no chache header and replace it with a header for 10 minute cache period.
First, ensure that mod_herders is enabled. To do this in Debian and Ubuntu, run the command:
a2enmod headers
Then create a .htaccess file in the website root directoyr which contains the following lines:
Header unset Pragma Header set Cache-Control "must-revalidate, max-age=0, s-maxage=600" Header set Vary "Accept-Encoding"
How to use a custom php.ini with suphp
To use a custom php.ini file with SuPHP for a website, you can define the path to the php.ini file in a .htaccess file or in the apache vhost like this:
suPHP_ConfigPath /home/websites/domain.tld/
Then add a php.ini file in the directory /home/websites/domain.tld/ which may be a copy of the global php.ini were you just changed a few settings or an empty file were you add only the settings that shall be overridden in the global PHP configuration.
If you use ISPConfig 2 or 3, you can add the suPHP_ConfigPath setting also in the apache directives field of the website in ISPConfig.
Redirect a subdomain with apache mod_rewrite and keep the URL in the address bar
If you want to redirect a subdomain like sub.domain.tld into a subdirectory of the website and keep the original URL in the browser location bar, you may use the following apache directives.
RewriteEngine on
RewriteCond %{HTTP_HOST} ^sub.domain.tld [NC]
RewriteRule ^/(.*)$ /sub/$1 [L]
This rewrite rule can be added into a .htaccess file in the website root or inside the vhost file. If you use ISPConfig 2 or 3, you can add this also into the apache directives field in the website settings.
Replace sub.domain.tld with the subdomain that shall be redirected and /sub/ with the path to the directory were the pages for this subdomain are located.
Redirect domains without www (e.g. domain.com) to www.domain.com with apache rewrite rules
If all your visitors shall access your website with a URL like www.domain.com and not without www, use the following apache rewrite rule for redirecting them.
RewriteEngine On
RewriteCond %{HTTP_HOST} !^www
RewriteRule (.*) http://www.%{HTTP_HOST}$1 [L,R]
The apache rewrite rule can be added in a .htaccess file in the website root directory or if you use ISPConfig 2 or 3, you can also add the rwrite rule into the apache directives field of the website.