Hi,

On 16/02/2025 14:29, sud wrote:
Hi,
We are asked to have key monitoring or alerting added to our postgres database. And I am thinking of metrics like blocked transactions, Max used transaction Ids,  Max Active session threshold, Deadlock, Long running query,  replica lag, buffer cache hit ratio, read/write IOPS or latency etc. I have below questions

1)Below are some which i tried writing, can you please let me know if these are accurate? 2)How should we be writing the alerting query for deadlock, max used transaction ids, read/write IOPS and latency? 3)Are there any docs available which have these sample sql queries on the pg_* table for these critical alerts which we can easily configure through any tool?
4)Any other alerts which we should be really having?


You should probably look at check_postgres and check_pgactivity. Their source code contain numerous SQL queries, that could help you write your own.

Regards.


--
Guillaume Lelarge
Consultant
https://dalibo.com


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