Itai Ganot asked:
I’ve been given the task to monitor a specific value in some MySQL server database, I need to raise a notification if the value has not been changed in the last 10 minutes.
I’ve added to the
UserParameter_mysql.conf the following line:
UserParameter=mysql.query, echo "select id from resolved_clicks order by id desc limit 1" | mysql -N -u zabbix -pPASSWORD aggregator
And when running a check from the Zabbix server, it returns the value correctly:
[root@zabbix ~]# zabbix_get -s IP -k mysql.query 7957178672 [root@zabbix ~]#
The next step was to create an Item which I’ve already done so and now I’m trying to configure the Trigger.
The trigger should arise a notification if the value has not been updated in the last 10 minutes.
How can I configure the trigger to reflect this condition? Thanks!
Here’s the Latest data from the trigger I’ve just created:
My questions are:
1. What's the meaning of change? 2. How can I know from looking on the Change row how many seconds have passed since the last 2 checks? 3. How can I test that the trigger is operating successfully without having to reproduce the problem?
Your question is not 100% clear, so I’ve covered both possibilities:
If you want to check whether data is not arriving from the Zabbix agent, use the
1 – if no data received during period of time in seconds. The period should not be less than 30 seconds.
0 – otherwise
For example, a trigger which will fire if no data was received for 10 minutes:
If you want to check whether the value has not changed, use
Returns the difference between the maximum and minimum values in a period (‘max()’ minus ‘min()’). The period is set in seconds or as a number of collected values (preceded by a # hash mark) in the first parameter.
For example, a trigger which will fire if the value has not changed for 10 minutes:
Finally, you probably want to rename your item.
mysql.query is very generic, and is already used by common MySQL templates. Something like
aggregator.highest_click_id might be more appropriate.
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