Archive for the 'Linux' Category

Dear Lazyweb, can you recommend an issue tracker?

Thursday, June 17th, 2010

I’m looking for a free, open source web-based issue tracker that I can install and run. I would like it to be able to authenticate off LDAP and allow users to rate the importance of the fixing of each issue, as well as the usual commenting.
I already run Request Tracker and don’t really want to [...]

Adventures in entropy, part 1

Sunday, June 6th, 2010

A while back, a couple of BitFolk customers mentioned to me that they were having problems running out of entropy.
A brief explanation of entropy as it relates to computing
Where we say entropy, we could in layman’s terms say “randomness”. Computers need entropy for a lot of things, particularly cryptographic operations. You may not think that [...]

Confusing hardware issues at home

Sunday, March 28th, 2010

I’ve got this server in my loft at home that’s mainly a file server for the data we use/view/listen to here. It looks like this:

A bit of a beast. When I bought it over 4 years ago I somehow thought I’d be adding a lot more drives. Anyway.
It’s been a good, reliable bit of kit [...]

DNS serial Nagios plugin lazyweb request

Thursday, March 18th, 2010

Dear Lazyweb,
Anyone got a Nagios plugin that will take a domain as argument, work out its list of nameservers and alert if the zone serial is different on any of them versus the serial on the host that the check is running against?

Coping with busy mailing lists with Mutt

Sunday, March 14th, 2010

I’m on a couple of fairly busy mailing lists which by their nature have loose or no moderation. It’s natural that some mailing lists work well with tight moderation, even perhaps requiring every post to be approved, but it’s more common for there to be little or no moderation. This is not a bad thing; [...]

OpenLDAP and md5crypt

Saturday, January 23rd, 2010

I’ve got some machines which authenticate their local users against OpenLDAP, and I wanted to reset some passwords from a Perl script.
First I tried just calling modify from Net::LDAP. That worked but just set the new password as plain text. My passwords appear to be “md5crypt”, and normally look like this:

{CRYPT}$1$fywXcrPC$Uakrx8POGBf1WM9l6mkG6/

I could come [...]

Linux software RAID hot swap disk replacement

Sunday, January 17th, 2010

One of BitFolk’s servers in the US has had first one and then two dead disks for quite some time. It has a 4 disk software RAID-10, so by pure luck it was still running. Obviously as soon as a disk breaks you really should replace it, preferably with a hot spare. [...]

My root file system doesn’t show up in “df” anymore!

Thursday, November 26th, 2009

Earlier tonight I had a strange bug report from a customer. Ever since I’d moved his VPS from one host to another, he’d stopped being able to see how much disk space he had free.
At first I thought it was simply because when I had moved his VPS I had taken the opportunity to [...]

Recently updated gnutls then found you can’t connect to LDAP?

Saturday, November 21st, 2009

If you recently installed this update:

gnutls26 (2.4.2-6+lenny2) stable-security; urgency=high
* Non-maintainer upload by the Security Team.
* Fixed CVE-2009-2730: a vulnerability related to NUL bytes in
X.509 certificate name fields. (Closes: #541439)
GNUTLS-SA-2009-4

— Giuseppe Iuculano <iuculano@debian.org> Sun, 01 Nov 2009 21:29:06
+0100

and then found that your applications [...]

Dear Lazyweb, where’s my power beep gone in Ubuntu?

Sunday, May 17th, 2009

Update: Solved! Someone pointed me to the “beep” track of the volume control, which was hidden and muted.
Last month I upgraded my ThinkPad R61 to Ubuntu Jaunty. Recently I noticed that I no longer have the beep when taking it on or off of AC power. I don’t know if it has always [...]