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Phusion Passenger 4.0.29 released

By Hongli Lai on December 13th, 2013

Phusion Passenger is a fast and robust web server and application server for Ruby, Python, Node.js and Meteor. Passenger takes a lot of complexity out of deploying web apps, and adds powerful enterprise-grade features that are useful in production. High-profile companies such as Apple, New York Times, AirBnB, Juniper, American Express, etc are already using it, as well as over 350.000 websites.

Phusion Passenger is under constant maintenance and development. Version 4.0.29 is a bugfix release.

Phusion Passenger also has an Enterprise version which comes with a wide array of additional features. By buying Phusion Passenger Enterprise you will directly sponsor the development of the open source version.

Recent changes

4.0.28 has been skipped because a compilation problem on OS X Mavericks as discovered shortly after uploading the tarball. The changes in 4.0.28 and 4.0.29 combined are as follows:

  • Introduced a workaround for a GCC 4.6 bug. This bug could cause Phusion Passsenger to crash during startup. Affected operating systems include Ubuntu 12.04 and Amazon Linux 2013.09.01, though not every machine with this OS installed exhibits the problem. See issue #902.
  • Improved Node.js support: the Sails framework is now supported.
  • Improved Node.js support: the streams2 API is now supported.
  • Introduced support for hooks, allowing users to easily extend Phusion Passenger’s behavior.
  • Fixed a bug in the `passenger start -R` option. It was broken because of a change introduced in 4.0.25.
  • Fixed a bug in PassengerMaxInstancesPerApp. Fixes issue #1016.
  • Fixed compilation problems on Solaris.
  • Fixed compilation problems on OS X Mavericks.
  • Fixed an encoding problem in the Apache autodetection code. Fixes issue #1026.
  • The Debian packages no longer depend on libruby.
  • Application stdout and stderr are now printed without normal Phusion Passenger debugging information, making them easier to read.

Installing or upgrading to 4.0.29

OS X OS X Debian Debian Ubuntu Ubuntu
Heroku Heroku Ruby gem Ruby gem Tarball Tarball


Phusion Passenger’s core is open source. Please fork or watch us on Github. 🙂

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