One of the Squid servers in a cluster I manage had an unusually high load, while the rest of the Squid servers with a relatively equal amount of connections were within acceptable load levels. While reviewing the process list, I found that updatedb.mlocat was running during the busiest time of the day. Turns out it […]
Category: Debian
Using the ACL in HAProxy for Load Balancing Named Virtual Hosts
Until recently, I wasn’t aware of the ACL system in HAProxy, but once I found it I realized that I have been missing a very important part of load balancing with HAProxy! While the full configuration settings available for the ACL are listed in the configuration doc, the below example includes the basics that you’ll […]
How-to Backup Joomla! 1.5 to Amazon S3 with Jets3t
Introduction to backing up a Joomla website to Amazon S3 storage using Jets3t. We all know backups are important. I’ve found what I consider a pretty good backup solution using Amazon S3. It’s super cheap, your backups are in a secure location, and you can get to them from anywhere. For my backup solution, I’m […]
Tips on Load Balancing a Joomla Cluster with HAProxy
For the past several weeks, I have been working with Joomla in a clustered environment. We have a single load-balancer running HAProxy that sends requests to two web servers synchronized with unison. One server is a hybrid and includes both the MySQL database as well as Apache2/PHP5. The other web server is strictly Apache2/PHP5. We […]
XenServer 3.2.0: Upgrade Debian Linux from Sarge to Etch
If you are running XenServer 3.2.0, then you have a built in Debian Sarge image. If you happen to want to upgrade an instance to Debian Etch (the latest stable build as of February 1, 2008), you should follow these steps. It isn’t a simple apt-get dist-upgrade command as other websites may have you believe. […]