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mysql maintenance: optimize databases to kill overhead
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geki
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PostPosted: Sat Dec 01, 2012 2:09 pm    Post subject: mysql maintenance: optimize databases to kill overhead Reply with quote

hi there!

the tables of various databases are updated daily, multiple times.
Therefore, I want to analyze(update index) and optimize all databases
with their respective tables to kill the table overhead every now and then.

so, I wonder how to do that the best way.

some ideas:

1 run mysqlanalyze as a cronjob.
mysql_cleanup wrote:
#!/bin/bash

mysqlanalyze --user root --password --analyze --all-databases
mysqlanalyze --user root --password --optimize --all-databases
though, I do not want to have a user with cleartext password there, which has write access.

2 run a php script to iterate over databases and their tables. same issue as before ...

am I paranoid about the password?! :roll:

3 add a mysql user with minimal rights to execute the maintenance task via 1.

which rights would that be?
I read somewhere SELECT and INSERT would be enough ...

then ...

3a just have the cleartext password inline.

3b read a file's content for the encrypted password and pass it decrypted to the commandline.

4 execute the maintenance task at the end of the update process every Xth time for selected database.

5 any other ideas?


I just cannot decide which one is the one proper way for the maintenance task to be executed. :evil:


hmm ... looking at it a bit I think I favor 3a. then, the question is what rights are necessary?


Thank you for your aid!
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Ant P.
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PostPosted: Sat Dec 01, 2012 7:40 pm    Post subject: Reply with quote

If you're worried about someone being able to read root's crontab, which is only readable by root in the first place, I'd say your system's already compromised.
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geki
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PostPosted: Mon Dec 03, 2012 8:10 am    Post subject: Reply with quote

true, true. so I decided to use mcrypt, so that the pass is not cleartext at least. just for the fun of my paranoia. :o

with that I found out about bash's trap function, with a strange "feature". but I will post about that in another thread.
edit #1 well, or just peek at portage shell scripts howto do this and it works. :o
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