MySQLTuner

This is a copy of a post I wrote for the Rackspace Talent blog. Much of it probably applies to the job of a system administrator, so I figured it would be a good idea to post it here as well. Let me know what you think! Although Rackspace has one of ... [More] the best work [...]Success with stress is a post from: Major Hayden's Racker Hacker blog. c0b6ad7e-f251-11df-b20b-4040336e00ef [Less]

Some might call me paranoid, but I get nervous when my package manager automatically removes a kernel. I logged into my Fedora 15 VM this morning and found this: ================================================================================ Package ... [More] Arch Version Repository Size ================================================================================ Installing: kernel x86_64 2.6.35.13-92.fc14 updates 22 M Removing: kernel x86_64 2.6.35.11-83.fc14 @updates 104 M   Transaction Summary ================================================================================ Install [...]Keep all old kernels when upgrading via yum is a post from: Major Hayden's Racker Hacker blog. c0b6ad7e-f251-11df-b20b-4040336e00ef [Less]

It's no secret that I'm a big fan of the RouterBoard network devices paired with Mikrotik's RouterOS. I discovered today that these devices offer Cisco NetFlow-compatible statistics gathering which can be directed to a Linux box running ntop. ... [More] Mikrotik calls it "traffic flow" and it's much more efficient than setting up a mirrored or spanned [...]Measure traffic flows with Mikrotik's RouterOS and ntop on Fedora 15 is a post from: Major Hayden's Racker Hacker blog. c0b6ad7e-f251-11df-b20b-4040336e00ef [Less]

If you find yourself forgetting bits and pieces about network topics, Packet Life's cheat sheets should be a handy resource for you. Lots of topics are included, such as VOIP, NAT, MPLS, BGP, and IOS basics. They're all in PDF form and free to ... [More] download. Cheat Sheets - Packet Life Thanks to @speude for mentioning [...]Handy networking cheat sheets from Packet Life is a post from: Major Hayden's Racker Hacker blog. c0b6ad7e-f251-11df-b20b-4040336e00ef [Less]

If you work for a growing company like I do, it's inevitable that you'll have to do your fair share of interviewing. I love it when I leave an interview with a good feeling about the candidate. That "wow, they really nailed it" feeling is always ... [More] great to have when you need to fill a [...]Do your homework before a technical interview is a post from: Major Hayden's Racker Hacker blog. c0b6ad7e-f251-11df-b20b-4040336e00ef [Less]

If you push play, the video should scoot out to about the 14m40s mark where MySQLTuner appears on one of the slides. Thanks to Trent Hornibrook for letting me know! MySQLTuner mentioned at the O'Reilly MySQL Conference is a post from: Major Hayden's ... [More] Racker Hacker blog. c0b6ad7e-f251-11df-b20b-4040336e00efMySQLTuner mentioned at the O'Reilly MySQL Conference is a post from: Major Hayden's Racker Hacker blog.c0b6ad7e-f251-11df-b20b-4040336e00ef [Less]

I was surprised to see coverage about icanhazip.com on Lifehacker last Sunday and I was curious to know what effect the story would have on my site's overall traffic. Dave Drager wrote a great summary of what the site offers and how people can use it ... [More] in their daily work. It's pretty obvious that icanhazip.com [...]Lifehacker effect on icanhazip.com is a post from: Major Hayden's Racker Hacker blog.c0b6ad7e-f251-11df-b20b-4040336e00ef [Less]

Anyone who says management is easy obviously hasn't done it for very long or they're not doing their job very well. Coordinating the activities and personal development of each person on the team is always a challenge and it introduces an ... [More] unbelievable number of variables into an already difficult job. However, watching members of the [...]How to survive as a technical manager is a post from: Major Hayden's Racker Hacker blog.c0b6ad7e-f251-11df-b20b-4040336e00ef [Less]

There are few things which will rattle systems administrators more than a compromised server. It gives you the same feeling that you would have if someone broke into your house or car, except that it's much more difficult (with a server) to determine ... [More] how to clean up the compromise and found out how the attacker [...]Strategies for detecting a compromised Linux server is a post from: Major Hayden's Racker Hacker blog. c0b6ad7e-f251-11df-b20b-4040336e00ef [Less]

As promised in one of my previous posts about dual-primary DRBD and OCFS2, I've compiled a step-by-step guide for Fedora. These instructions should be somewhat close to what you would use on CentOS or Red Hat Enterprise Linux. However, CentOS and Red ... [More] Hat don't provide some of the packages needed, so you will need to [...]Dual-primary DRBD with OCFS2 is a post from: Major Hayden's Racker Hacker blog. c0b6ad7e-f251-11df-b20b-4040336e00ef [Less]