Author archives: Mike

RSS feed of Mike

DHClient!!! (think "Kahn!")

It's like the standard DHCP client and server are *trying* to be ridiculous.  Half the custom options show up, the others don't, no error messages, different SELinux restraints on different systems, standard options seemingly unknown on one side or another, options just disappearing without explanation.

If you don't understand an option, log an error, don't ...

Continue reading

Oh, SELinux, you complete(ly annoy) me

The DHCP hiccup I've been debugging all week turns out to have bee nothing other than an SELinux restriction preventing the config-file from being read.  Most annoying part is that I already discovered that restriction weeks ago and thought I'd resolved it.  Now to dive in and figure out how to make this work properly, ...

Continue reading

Why would you delete (valid) pages on Wikipedia?

Why the heck is wikipedia *deleting* articles for not being universally notable rather than simply assigning a "notability" level to them?  It's a computer system, and you store all of the revisions anyway, so why delete something rather than simply marking it less-widely relevant (and thereby decreasing search-result ranks and the like)?  I gather somebody ...

Continue reading

Ouch, overheating machine via Strigi

Nepomuk/Strigi felt like indexing my desktop to be all semantic-y.  Great... but wow, ~20% CPU for ~12hrs and constant disk thrashing... temperature spiked up pretty bad before I noticed it (not damaging bad, but if there'd been another load on there (i.e. graphics) I'm guessing it would have fried the machine), memory completely exhausted too ...

Continue reading

Anyone with PostgreSQL-on-EC2 recipes that work?

Seeing ridiculously slow PostgreSQL performance on an application.  Can't claim the application is particularly tightly coded for DB usage (too much ORM-ish-ness), so there's room to improve there, but right now we're seeing the same app 10x slower on the EC2 instances than on my (somewhat high-end) laptop... which makes me wonder if there's some ...

Continue reading

Python 2.5 PIL Gone in Lucid?

Why do half my tests suddenly fail, thinks me?  Me thinks, me looks, me finds no PIL!  Egadzooks, thinks me, thinking thinkily, what has become of my Python 2.5 PIL?  Aptitude thinks, and returns no thoughts of a Python 2.5 python-imaging?  Me thinks methinks me thoughts must turn to source.

[Update] For those who encounter ...

Continue reading

Bug Report Fatigue before I get a single report in...

I upgraded my laptop to Kubuntu Lucid to help test the release.  I've now got debug and crash messages popping up in Eric, Plasma crashing when I remove widgets, mkfontscale crashing if I have my .fonts directory available, multi-second pauses on alt-tab (that one's a killer when you work, as I do, by constantly switching ...

Continue reading

Duh! But upstart on 1.5 year old OS not so great...

My little experiment in Upstart is going to get rolled back, it appears.  While the system worked perfectly on modern Linux (Karmic Ubuntu), it wouldn't even recognize the scripts as valid on the Fedora 10 servers.  Given that the release of Upstart is so old, I'm thinking I'll wind up managing the 6-7 state transitions/events ...

Continue reading

Setting up a DHCP test environment in QEMU

My current project must run against a DHCP server which has to have a fairly exotic configuration (not really one I'd want running on my home network), and I want to be able to blow away and re-create the client constantly as I test installation procedures and the like.  So, since we're on Fedora 10 ...

Continue reading

Fedora 10 without the Cruft

Wound up stuck at the Caffe for almost 3 hours as my supposedly minimal Fedora 10 install churned on my non-suspend-capable laptop.  Turns out that you have to deselect *every* checkbox in the Fedora 10 installer to get a minimal install, even things like system tools, text-editors and the like.  The google key word to ...

Continue reading