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Strategies for storing backups

··510 words·3 mins
Although it’s not a glamorous subject for system administrators, backups are necessary for any production environment.


Monitor MySQL restore progress with pv

··250 words·2 mins
The pv command is one that I really enjoy using but it’s also one that I often forget about.



ext3_dx_add_entry: Directory index full!

··207 words·1 min
I found a server last week that was having severe issues with disk I/O to the point where most operations were taking many minutes to complete.


MySQL couldn’t find log file

··239 words·2 mins
This error will pop up when binary logging is enabled, and someone thought it was a good idea to remove binary logs from the filesystem:

Repair auto_increment in MySQL

··91 words·1 min
Table corruption in MySQL can often wreak havoc on the auto_increment fields.

Corrupt /dev/null

··107 words·1 min
If you find that /dev/null is no longer a block device, and it causes issues during init on Red Hat boxes, you will need to follow these steps to return things to normal:

rpmdb: Lock table is out of available locker entries

··159 words·1 min
If up2date throws some horrible Python errors and rpm says “rpmdb: Lock table is out of available locker entries”, you can restore your system to normality with the following: