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Improve Prometheus stats + Add Grafana dashboard (#785)

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We were missing some labels on metrics generated by the Prometheus exporter so I fixed that. There are still some gaps that I want to address with respect to the metrics we track but this seems like a good start.

I also created a Grafana Dashboard and exported it to JSON. It is designed with the same metric names the Prometheus exporter uses.
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Mostafa Abdelraouf
2024-08-31 08:18:57 -05:00
committed by GitHub
parent 4a7a6a8e7a
commit c05129018d
3 changed files with 2210 additions and 27 deletions
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README.md
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@@ -268,6 +268,8 @@ psql -h 127.0.0.1 -p 6432 -d pgbouncer -c 'SHOW DATABASES'
Additionally, Prometheus statistics are available at `/metrics` via HTTP.
We also have a [basic Grafana dashboard](https://github.com/postgresml/pgcat/blob/main/grafana_dashboard.json) based on Prometheus metrics that you can import into Grafana and build on it or use it for monitoring.
### Live configuration reloading
The config can be reloaded by sending a `kill -s SIGHUP` to the process or by querying `RELOAD` to the admin database. All settings except the `host` and `port` can be reloaded without restarting the pooler, including sharding and replicas configurations.