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Database Performance Analyzer (DPA)

Forum Database Instance Availability for mysql not working

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Database Instance Availability for mysql not working

mos over 7 years ago

HI,

Im using DPA 10.1 and found that running the Database Instance Availaibility alert against a mysql host is a bit flakey.

Initially, when i stop the instance, and test the alert i get the following which is correct:

HIGH

MYSQLHOST

TRUE

com.confio.ignite.common.jdbc.exceptions.MonitoredDatabaseConnectionException: A connection to the monitored database [MYSQLHOST] could not be established: Invalid Host or Port [cause=org.springframework.jdbc.CannotGetJdbcConnectionException: Could not get JDBC Connection; nested exception is java.sql.SQLNonTransientConnectionException: Could not connect to mysqlhost.live.x.x.net:3306 : Connection refused: connect]

However, after a minute or so, the result of the alert changes to the following:

NORMAL

MYSQLHOST

No results were returned from alert

Which means the alert doesnt sent out an email

Any advice or similar issues for other users?

0 mandevil over 7 years ago

Check out this post. DPA Notification Policy
You may need to change the notification policy...
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0 mos over 7 years ago in reply to mandevil

Thanks for your reply. Ive checked and its currently set to 'Notify when level not visited since Normal' which seems to be the right thing to do. What i dont understand is why the above example goes to a state of 'Normal' even though the response from the alert is 'No results were returned from alert'
Mos
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0 mandevil over 7 years ago in reply to mos

That is odd behavior though if the instance is still unreachable. You may have found an undocumented feature (AKA bug).
I'd recommend opening a support ticket to see if we can replicate this behavior.
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