You can export your Timescale service telemetry to Prometheus.

  1. Connect to the Timescale service as tsdbadmin (using psql or a similar tool).

  2. Create a new user to scrape the metrics from the database using the required permissions:

    a. Create a user named monitoring with the desired password by replacing <password>:

    CREATE USER monitoring WITH PASSWORD '<password>';

    b. Grant pg_read_all_stats to the monitoring user:

    GRANT pg_read_all_stats to monitoring;
  1. Install the postgresql_exporter on a host that you manage to connect to the Timescale service and collect telemetry. Below is an example using Docker to run postgresql_exporter:

    Important

    Your exporter must be in the same AWS region as the Timescale Service it is attached to. If you have Timescale Services running in multiple regions, create an exporter for each region.

    make sure to replace <PASSWORD> with the created password and <TIMESCALE-HOST:PORT> with the timescale service host and port.

    docker run \
    -p 9187:9187 \
    -e DATA_SOURCE_NAME="postgres://monitoring:<PASSWORD>@<TIMESCALE-HOST:PORT>/tsdb?sslmode=require" \
    quay.io/prometheuscommunity/postgres-exporter
  2. Once the postgresql_exporter is up and running, and successfully connected to the Timescale service, you can configure your Prometheus server to scrape the postgresql_exporter metrics endpoint. This endpoint exposes all the metrics provided by the exporter.

    To view all the exposed metrics, execute curl on the same host:

    curl localhost:9187/metrics

Use the PostgreSQL dashboard to visualize the following metrics:

  • Current QPS
  • Fetched, Returned, Inserted, Updated, Deleted Rows
  • Database Deadlocks and Conflicts
  • Cache Hit Ratio
  • Number of Active Connections
  • Buffers
Note

Furthermore, you can create custom dashboards tailored to your specific needs using the metrics obtained from the Timescale service.

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