2,268 reputation
1222
bio website karlkatzke.com
location College Station, TX
age 34
visits member for 5 years, 1 month
seen Mar 18 at 0:52

I'm a sysadmin for Sentry Data Systems. I do linux and clustering and networking, and enjoy instigating a good STONITH deathmatch when I get bored.

Work-wise, I'm a giant fan of the k.I.s.s. principle - keep I.T. simple, stupid. Don't make things any more complex than the features you need.

In my spare time, I renovate houses and ride herd on a pack of dogs with extreme mental issues. My background and career are both in systems. I look at systems, analyze them, and use them or make them better. I likeCFO DIY home stuff because the systems are simple and it's rewarding to figure em out and use them. How do I know the things I do? I have probably been there, broken that, ruined the other thing, and had to figure out how to fix all of them. we have this saying in my group of friends-who-renovate-houses: "Ask me how I know."


Jun
5
comment Should Cat6 cables be used for servers ('important hosts') rather than Cat5-E?
The internal plastic divider inside the Cat6 we buy is (a plastic + shaped thing) is a pain in the butt to work with.
Jun
5
comment Determine the free file space in Linux
du -h was always my favorite thing to say to a coworker.
Jun
5
comment Securing Webservers
The publicly distributed hash tables I know of go up to about 12 chars. Beyond that, well ... I have about 18 processor cores that run at up to 4 ghz in my spare room. If I were to start grinding out hash tables, how long would it take me to do 13 chars? Heck, my work desktop has 16 cores that run at > 2.5 ghz. If you are the type that's hacking people's accounts frequently, my guess is that you will have a script that will attempt a dictionary attack. Be1er0ph0r's PW is vulnerable to such an attack, regardless of length.
Jun
5
answered Securing Webservers
Jun
5
answered What kind of mail server do you use?
Jun
5
comment What kind of mail server do you use?
It's also the only major 'brand' server with a completely cross-platform client (looks/works the same in Linux, Mac, and Windows). It's now run on OES, which is basically SuSE Linux and the server post office is rock solid. It's gone from 'stupid' to 'odd, but rather nice after the extreme pain induced by Exchange.'
Jun
5
answered What are the most reliable blade server manufacturers?
Jun
5
answered Network equipment console cables
Jun
5
awarded  Critic
Jun
5
answered How are you documenting your work, processes and environment?
Jun
5
comment Content Management Pros and Cons
In the situation we were working with, the files were on a read-only NFS mount that was written to by a hardened server secured behind a VPN. From the public internets, there really was no way to edit the files.
Jun
5
answered Fixing “Can't find file: … (errno: 13)” on mysql
Jun
5
answered Content Management Pros and Cons
Jun
5
asked NFS v4, HA Migration, and stale handles on clients
Jun
5
comment Why would wireless routers become less reliable over time?
Software failure in the case of a lockup usually isn't a case of an immediate failure like a short. Think more of a traffic gridlock in a downtown. First you get an accident at first and Main, then one at 3rd and Front, then one on the on-ramp to the freeway and everyone's stuck. But three wrecks don't always happen... in the morning, you only have one wreck and things keep moving. Then in the evening you have six wrecks and no one gets home till 8pm.
Jun
5
answered Best practices for keeping UNIX packages up to date?
Jun
5
answered Best system administrator accident
Jun
5
comment Why would wireless routers become less reliable over time?
Had an experience like this with one of my first 802.11b access points in a production environment. The boss's desk was in line-of-sight from the antenna. Between the boss's desk and the antenna was the kitchenette with the microwave. Every day around noon, the boss's laptop would drop it's connection... it took us an embarrassingly long time to figure out.
Jun
5
answered What do you wish developers would do differently?
Jun
5
comment Why would wireless routers become less reliable over time?
I Am Not An Electrical Engineer, but ... Intermittent failures can cause firmware to hang. Heat, or rather the expansion and contraction of metal bits from exposure to heat, can cause intermittent failures or unexpected states in the integrated circuits that make up the controller. It's not so much that you're letting it cool when you power cycle, you're just clearing anything stateful and reloading the firmware from ROM.