Archive | January, 2014

GDFL 1.2

Do not Panic! Remote Server (Hetzner) not rebooting any more – A Solution

I went through this experience recently. First of all, don’t panic! I panicked, and because of this, I made a mistake: I didn’t wait long enough for it to come online. Had I waited up to 60 minutes, it would probably have come online (see reason below). The story: I had broken packages on my Ubuntu […]

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Mysql screenshot

A solution for MySQL Assertion failure FIL_NULL

A defective RAM module recently caused data corruption in MySQL tables. MySQL would log the following to /var/log/syslog  in regular intervals, about every few minutes:

Reading MySQL documentation and various blogs didn’t help much. I ran CHECK TABLES  on all the tables and they all reported OK. Then I ran

and still all tables reported OK. […]

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Crash

Adventures with various Segfaults due to defective RAM

If you get various segfaults on your Linux server, like these:

or:

or

or

etc. etc., then, no, your system is not suddenly crazy. Nor are you. It is highly likely that you RAM is defective. You should reboot your server and run the  RAM test from your boot manager (Grub […]

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Setting correct file permissions for ssh is a bit tricky

File permissions for successful SSH login via authorized_keys

If you want to ssh into your server without being repeatedly prompted for the password you can copy your public ssh key into a file called authorized_keys  in the .ssh subdirectory of the home directory of the remove server account. However, this works only if the permissions for this file are set correctly. First, if you have […]

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