Likewise AD Domain Join Breaks Every 7 Days
I have been using Likewise Open for awhile to perform user authentication against Active Directory on my Linux servers. For the most part it works great, and is dead simple to set up.
Recently I have been building out a SLES 11 environment and ran into some troubles with authentication with Likewise. I could join servers to the domain and everything would work great. Then some time later I would go to log in to the server only to get an "access denied" error. Upon logging in as root on the console and running "domainjoin-cli query", I would get this output:
someserver:~ # domainjoin-cli query Error: Lsass Error [code 0x00080047] 40022 (0x9C56) LW_ERROR_PASSWORD_MISMATCH - The password is incorrect for the given username
When searching for "LW_ERROR_PASSWORD_MISMATCH", there are hardly any results. Most of the results I did get were just links to source code where that string was used as a constant.
After quite a bit of log hunting and deduction, I was finally able to figure it out and correct the error. Read on for the solution.
MinePlump – Minecraft Resource Plumpifier
MinePlump is a program that will find mineral veins in an existing Minecraft Beta level and, well, plump them. There are a few tunable parameters, so play around with things until you think you are getting a good result.
Read on for the download link and usage instructions.
UPDATE 2011-10-02: I am focusing on MineCraft for the next couple weeks. Hopefully I will have 2.0 released in this timeframe! Also the code has been moved to Git, and can be found at: http://git.thogan.com/mineplump/
Let me know if you are interested in contributing!
IMPORTANT COMPATIBILITY NOTE: I have not tested the old MinePlump available here since 1.5. Use at your own risk, BACKUP YOUR WORLDS!
Xen 3.4 – 4.0 Bug On AMD 6100 Series (Magny-Cours) Opteron
Xen 3.4 through 4.0 will not boot on the new AMD 6100 series (Magny-Cours) Opteron CPU (Socket G34). There seems to be a bug in the Machine Check Exception (MCE) handling code that causes Xen to panic. The 'nomce' (3.4) and 'no-mce' (4.0) boot options do not properly turn off the MCE code, so this cannot be used to avoid the issue.
There is a patch in Xen 4.0 unstable that fixes the 'nomce' boot option so that it works properly. Unfortunately this change has not been back-ported to Xen 3.4 by most of the Linux distros yet.
I have applied the fix to Xen 3.4.1 for OpenSUSE 11.2 and built RPMs for the affected packages. This did the trick and my AMD 6100 series systems are now running Xen just fine with the 'nomce' boot option. Read on for more details and the link to the RPMs with the fix.
THogan.com Joomla -> WordPress
This weekend I moved the tech blog from Joomla to WordPress. I must say I had always had the wrong impression of WordPress. I had never used it, and always thought of it as a sort of "super-basic-blog-in-a-box". I recently started messing around with it and discovered it was in fact quite a powerful website platform!
I have been lazy about updating and have a lot of content to add in the coming weeks. I really liked the WordPress post editor, and considering that I will be doing a lot of writing soon, that was important. Also I just like to try out new stuff, so here we are!
Mail Bounced Instead Of Deferred – DNS Forward
I recently had a problem with my mail servers where messages received by my MX were bounced, rather than deferred, when the internal mail server the messages were destined for went offline.
This turned out to be because of my DNS configuration. The cause of the problem surprised me, because it was so decoupled from the mail setup. Hit the jump for the full story and solution.