Racker Hacker Words of wisdom from a server administrator

Version 0.8.6 of MySQLTuner is now available. It contains a few bug fixes and readability improvements:
Newlines are placed between the sections for increased readability
Each section now contains extra lines to set the sections apart. It makes the output a little longer, but easier to read as well.
Storage engine status color bug
Even if the [...]

I recently came across a server that was throwing this error into its message log:
ntpd_initres[2619]: ntpd returns a permission denied error!
It would only appear about every five minutes on the server, and restarting ntpd didn’t correct the issue. I stopped ntpd entirely, but the error still appeared a few minutes later.
After examining the running [...]

Due to popular demand, I’ve created a mailing list for MySQLTuner. It will be a low-traffic list consisting of new version announcements and bug fixes.
If you want to subscribe, simply send an e-mail with SUBSCRIBE in the subject line to mysqltuner-announce-request@mysqltuner.com. Be sure to add mysqltuner-announce@mysqltuner.com to your mail provider’s whitelist.

If you see a large mail queue and your system’s I/O is increasing, you may find messages like these in your syslog:
Losing q5/qfg9N5EwE3004499: savemail panic
SYSERR(root): savemail: cannot save rejected email anywhere
In this situation, there’s some reason why sendmail cannot deliver e-mail to the postmaster address. There’s a few issues that can create this problem:

Missing [...]

To get the latest copy, head over to the download page! Here’s the changes from 0.8.0 to 0.8.5 for MySQLTuner:
Fixed a copy/paste bug
There was a bug in 0.8.0 that displayed “OK” in red rather than showing “!!”. It affected the informational “–” outputs as well. Thanks to Nils Breunese for pointing out that [...]