[+] add "prerequisite extensions" support for metric definitions #643
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To reduce regular errors in server logs of monitored DBs. That is - we don't even try to query the DB if we know that some prerequisite is missing and it would error anyways. In the pgwatch2 logs the errors got reduced already to 1x per 10min, but increase that to 1h also for this case. For now only for pg_stat_statements as that's by far the most common one in use.
pashagolub
approved these changes
May 31, 2023
pashagolub
changed the title
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To reduce regular errors in server logs of monitored DBs. That is - we don't even try to query the DB if we know that some prerequisite is missing and it would error anyways. In the pgwatch2 logs the errors got reduced already to 1x per 10min, but increase that to 1h also for this case.
For now only for pg_stat_statements as that's by far the most common one in use.