All My Brain Where stuff from my brain lands

January 16, 2008

Virtual Hosting TurboGears Applications on Mac OS X Leopard

For a couple years now, I’ve been learning and applying various tricks for developing and hosting multiple Python web sites on my development machines. During that time, I made a migration to Mac OS X. Most setup files for python applications and libraries work out of the box on the Linux distributions I’ve tried. For OS X, you can find a lot of prebuilt packages for the necessary dependencies but those packages want to be installed in the OS X system library location for Python.

If you want to host or develop more than one site with Python, you’ll need to use virtual environments. This applies equally to any OS, not just Mac OS X. There seem to be a few more tricks to getting things up and running on OS X however. Here is the process I went through to get TurboGears applications hosted in virtual environments on OS X.

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October 29, 2007

How to virtual host load balanced websites with ldirectord and Apache

I posted a while back on getting Heartbeat set up to add reliability to websites. After a few weeks of experience with the system, I thought I’d add a few additional tips on making the setup more reliable. There are already a few good guides on getting heartbeat set up. You could also read my original post on the subject if you don’t already have heartbeat load balancing your site. This post however, deals with the case when you are servicing more than one site per physical server.

We host three different websites on three different physical servers. Each physical server hosts two websites with Apache. Each website is hosted on two different physical servers. The sites are load balanced with ldirectord which resides on two different servers that manage the public IP addresses to our services with Heartbeat. If load increases on any of our services, we could always add additional physical servers relatively easily.

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