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Full Discussion: Conditional bash/mysql query help
Top Forums Shell Programming and Scripting Conditional bash/mysql query help Post 302936983 by jcass78 on Monday 2nd of March 2015 12:04:38 PM
Old 03-02-2015
Conditional bash/mysql query help
I think(hope) I've got a simple one - I just need to send an email if a mysql query returns any results (ideally - it will never match).

Currently I just pipe the mysql query output to the mail program, but of course that emails regardless of the output( and I check this every 10 minutes from cron, so that's a lot of mail when it's empty).

I only want to send mail (the actual mysql output) if there is anything returned from the query.

Here is my query - ideally it will never find any messages that meet those conditions, but if it does, I need an email sent with the results of the query.

Code:
mysql -e 'select new_messages,FROM_UNIXTIME(last_purge_at)
  AS 'last_purge_at',comment
  FROM zimbra.mailbox
  WHERE new_messages > 0
  AND last_purge_at < DATE_SUB(NOW(),INTERVAL 10 MINUTE)' \
  | mail -s "Zimbra email overdue" user@email.com

Anyone got any suggestions? Thanks in advance
Last edited by rbatte1; 03-02-2015 at 01:08 PM.. Reason: Split up long line to make it more readable
 

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pmdamysql

PMDAMYSQL(1)						       Performance Co-Pilot						      PMDAMYSQL(1)

NAME

       pmdamysql - MySQL database PMDA

DESCRIPTION

       pmdamysql is a Performance Co-Pilot PMDA which extracts live performance data from a running MySQL database.

INSTALLATION

       pmdamysql uses a configuration file from (in this order):

       o   /etc/pcpdbi.conf

       o   $PCP_PMDAS_DIR/mysql/mysql.conf

       This file can contain overridden values (Perl code) for the settings listed at the start of pmdamysql.pl, namely:

       o   database name (see DBI(3) for details)

       o   database user name

       o   database pass word

       Once this is setup, you can access the names and values for the mysql performance metrics by doing the following as root:

	       # cd $PCP_PMDAS_DIR/mysql
	       # ./Install

       If you want to undo the installation, do the following as root:

	       # cd $PCP_PMDAS_DIR/mysql
	       # ./Remove

       pmdamysql is launched by pmcd(1) and should never be executed directly.	The Install and Remove scripts notify pmcd(1) when the agent is
       installed or removed.

Binary Status values in text
       Some of the status values are in the form of YES/NO or ON/OFF.

       Since these cannot be intepreted by tools like PMIE, they have been duplicated with a _num extension and the values of 1 (YES/ON) or 0
       (NO/OFF).

   Eg:
       o   mysql.slave_status.slave_io_running

       o   mysql.slave_status.slave_io_running_num

FILES

       /etc/pcpdbi.conf
	   configuration file for all PCP database monitors

       $PCP_PMDAS_DIR/mysql/mysql.conf
	   configuration file for pmdamysql

       $PCP_PMDAS_DIR/mysql/Install
	   installation script for the pmdamysql agent

       $PCP_PMDAS_DIR/mysql/Remove
	   undo installation script for the pmdamysql agent

       $PCP_LOG_DIR/pmcd/mysql.log
	   default log file for error messages from pmdamysql

SEE ALSO

       pmcd(1), pmdadbping.pl(1) and DBI(3).  # vi: sw=4 ts=4 et:

3.8.10							       Performance Co-Pilot						      PMDAMYSQL(1)
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