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KnowledgeTree speed on VPSes

KnowledgeTree speed on VPSes

I was trying out KnowledgeTree 3.7.0.2 (Community Edition) on 3 different virtual private servers just to see how they fare  with “heavy” websites, and here’s how they perform generating a page of 20 items. All VPSes are 512MB instances running on Ubuntu 10.04 LTS . APC Hosting (Virtuozzo) Request created in 17.190s Rackspace Cloud Server (Xen) Request created in 0.446s Club Uptime (OpenVZ) Request created in 0.299s The most ironic thing is that the above VPSes are listed in order…

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Debian Lenny to Squeeze upgrade

Debian Lenny to Squeeze upgrade

Debian 6 i.e. “Squeeze” was released almost a month ago. Although there are still about 11 months more before Debian 5 “Lenny” is no longer supported, I figured I would upgrade one Debian Lenny Xen-based VPS hosted on a Rackspace Cloud,  currently functioning as an OpenLDAP server, as a weekend project. The upgrade steps were straightforward: 1. Edit /etc/apt/sources.list and change all instances of lenny to squeeze. 2. Run the following commands in succession in terminal sudo apt-get update sudo…

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Backing up your Debian/Ubuntu VPS to Rackspace Cloud Files

Backing up your Debian/Ubuntu VPS to Rackspace Cloud Files

There are quite a number of tutorials available on backing up to Amazon S3, which is popular due to its redundancy and low cost (15cents per gigabyte). I prefer Rackspace Cloud Files though due to its lower upload fees (8cents vs 10cents per gigabyte of bandwidth).  We will use duplicity to create the backups because it is bandwidth efficient and also allows us to encrypt our backups. We will also be setting up the cloudcity script to make it easier…

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