Skip to content
master
Go to file
Code

Latest commit

 

Git stats

Files

Permalink
Failed to load latest commit information.
Type
Name
Latest commit message
Commit time
 
 
 
 
 
 
 
 

README.md

mod_realdoc is an Apache module which does a realpath on the docroot symlink and sets the absolute path as the real document root for the remainder of the request.

It executes as soon as Apache is finished reading the request from the client.

The realpath frequency can be adjusted in httpd.conf using:

<IfModule mod_realdoc.c>
    RealpathEvery 2
</IfModule>

By resolving the configured symlinked docroot directory to an absolute path at the start of a request we can safely switch this symlink to point to another directory on a deploy. Requests that started before the symlink change will continue to execute on the previous symlink target and therefore will not be vulnerable to deploy race conditions.

This module is intended for the prefork mpm. Threaded mpms will incur race conditions.

Compile and install with:

apxs -c mod_realdoc.c
sudo apxs -i -a -n realdoc mod_realdoc.la

About

Apache module to support atomic deploys - http://codeascraft.com/2013/07/01/atomic-deploys-at-etsy/

Resources

License

Releases

No releases published

Packages

No packages published

Languages

You can’t perform that action at this time.