Watchdog für mysql in Perl?
Hi! Short question: i want to have a perl watchdog telling me when executed if my sql-server is running and if anything is allright with it. So if i get any errormessage i can restart the server by remote. Has someone done this allready? Any hint? Thanks again and best regards Sascha Kettner - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
Re: Watchdog für mysql in Perl?
Well, you could use a shell script to run mysqladmin status.
I.e. this bash script:
#! /bin/bash
# mystatus.sh is really just a simple alias for a
# longer command.
# Usage: 'mystatus.sh PASSWORD'
# replace values of $my_hostname and $my_username if needed
my_hostname='localhost'
my_username='root'
my_password=${1}
export my_hostname my_username my_password
# execute the command
/usr/local/mysql/bin/mysqladmin -h $my_hostname -u $my_username \
--password=$my_password status
# end of file
I tested this out with variables corresponding to my own system, I'm
running RH Linux with MySQL 3.23.46. You don't even have to replace the
values in the variables section of the script with your own, if your
MySQL server is on the localhost. The setup as is takes the password
from STDIN, so it's not stored anywhere (though I don't know how to
write a script that hides the password as you type it [yet]). I'm
sure that you could do a better script than this in Perl, which I don't
yet know.
I'm still learning how to write bash scripts (this is my second one that
does anything useful) so if this code is amateurish, sorry.
Erik
On Friday, January 4, 2002, at 06:52 AM, Sascha Kettner wrote:
Hi!
Short question: i want to have a perl watchdog telling me when executed
if my sql-server is running and if anything is allright with it. So if i
get any errormessage i can restart the server by remote. Has someone
done this allready? Any hint?
Thanks again and best regards
Sascha Kettner
-
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RE: Watchdog für mysql in Perl?
I use a simple script that does the following: --- snip --- mysql -e SELECT * from table_name limit 1 db 2/tmp/filename x=`cat /tmp/filename` if [ $x = ] then do_nothing=1 else ## There's an issue! echo ERROR! fi --- end snip --- Using the re-direct of stderr is the key. the 2/tmp/filename sends all error output to the /tmp/filename file. If there are no errors, the file will be empty. I run it as a cron job every ten minutes, and if there is an error, it pages me. Keeps me in the know! -Original Message- From: Sascha Kettner [mailto:[EMAIL PROTECTED]] Sent: Friday, January 04, 2002 5:53 AM To: [EMAIL PROTECTED] Subject: Watchdog für mysql in Perl? Hi! Short question: i want to have a perl watchdog telling me when executed if my sql-server is running and if anything is allright with it. So if i get any errormessage i can restart the server by remote. Has someone done this allready? Any hint? Thanks again and best regards Sascha Kettner - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail [EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php - Before posting, please check: http://www.mysql.com/manual.php (the manual) http://lists.mysql.com/ (the list archive) To request this thread, e-mail [EMAIL PROTECTED] To unsubscribe, e-mail mysql-unsubscribe-##L=##[EMAIL PROTECTED] Trouble unsubscribing? Try: http://lists.mysql.com/php/unsubscribe.php
