R-fx Networks

HowTo

ATA Over Ethernet: As an Alternative

by on Apr.04, 2011, under HowTo, My Blog

New technologies, new toys — Oh how I love getting my hands dirty with them. Today I am going to have a look at ATA Over Ethernet (AoE) as an alternative solution to NFS in the role of a NAS/SAN implementation. We will look at both the server side vblade setup and the client side […]

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Data Integrity: AIDE for Host Based Intrusion Detection

by on Mar.17, 2011, under HowTo, My Blog

It used to be all the talk, everyone knew it, accepted it but few did anything about it and still even today, very few do anything about it. What is it? Data Integrity. But it is not in the form of how we usually look at data integrity; it is not backups, raid management or […]

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Raid Management: Know Whats Really Going On

by on Feb.14, 2011, under HowTo, My Blog

In today’s hosting environment it is common place for servers to have hardware based raid cards but what is not common place is having a reliable method for checking the status of the raid arrays. Few would question the value to data integrity by making use of raid technology but very few organizations and businesses […]

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Nginx: Caching Proxy

by on May.06, 2010, under HowTo, My Blog

Recently I started to tackle a load problem on one of my personal sites, the issue was that of a poorly written but exceedingly MySQL heavy application and the load it would induce on the SQL server when 400-500 people were hammering the site at once. Further compounding this was Apache’s horrible ability to gracefully […]

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IRSYNC & Limiting Passwordless SSH Keys

by on May.04, 2010, under HowTo

Anyone who has ever used SSH key-pairs to access more than a couple of servers (or hundreds in my case), will tell you they are an invaluable convenience. It is a natural progression and very common usage that SSH key-pairs are coupled with other common tasks or tools, where having a pass phrase attached to […]

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Upgrade CentOS 4.8 to 5.x (32bit)

by on Oct.20, 2009, under HowTo

Traditionally, the dist upgrade path that many were familiar with from the RH8/9->Fedora or similarly Fedora dist upgrades, have applied more or less to RHEL/CentOS but with the release of 4.5 and early releases of 5.0 the actual dist upgrade path was messy or nearly impossible. The early versions of 5.0 (up to 5.2) had […]

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