Comments on: WordPress on Amazon RDS

By: David Bullock

David Bullock — Sat, 09 Jul 2011 18:43:54 +0000

I’m working currently on a fairly large WordPress install using Amazon RDS and EC2 for one of my clients. One of the issues I ran into fairly early on when first working with RDS is that the installation specific global settings aren’t adjustable through the standard SQL interface, and many of them aren’t preconfigured in useful manner.

A big one for us of course was the Query Cache. Another one to look out for is the timezone.

Instead you need to create a parameter group, which you can do through the Amazon Web Console. Once you have the parameter group, you can use the Amazon RDS command line tools to modify your parameters and choose when those parameters are applied (i.e. immediately, after-reboot, etc.)

Setting up the RDS CLI tools is a bit clunky and it’s odd that as simple as the operations are, that you can’t execute them through the web interface.

Also keep in mind that an advantage of EC2 over most VPS is rapid deployment to support scaling. I can bring up an additional copy to share load in another 5 minutes and add it to the load balancer immediately.

Similarly I can setup multiple RDS instances both for redundany, and for use with something like HyperDB to support additional scaling.

- Dave

By: Elad

Elad — Fri, 22 Oct 2010 20:03:08 +0000

It was only on RDS (not EC). I took it off just to save a few $$$.

By: John

John — Fri, 22 Oct 2010 18:35:26 +0000

This is just what I am looking for. I am currently on a VPS that I am looking to scale more in the future and I am considering Amazon services for it.

Is WordPressRDS.com on Amazons AWS and RDS? Or just RDS?

Thanks!

By: Elad

Elad — Wed, 15 Sep 2010 00:16:19 +0000

Well, for example you might be able split your database over a few RDS instances.

By: Frederic Sidler

Frederic Sidler — Tue, 14 Sep 2010 09:41:54 +0000

Elad, thank you for sharing. I just do not see where the scalability comes into place in such a configuration.