PostgreSQL deployments

For deployments other than Cloud and please use the information here to access the database. specific

We currently run two separate databases. The sg-cloud database is the primary database, and the code-intel team uses the sg-cloud-code-intel.

You can also directly view the database in GCP.

We utilize the Google Cloud SDK utility Cloud SQL Proxy to connect to our production databases. By default, our Cloud SQL databases are not accessible.

There are two ways of connecting: either using the gcloud beta sql connect command, which will use the pgsql client, or running the cloud_sql_proxy on a port locally to utilize your preferred tools.

For read-only access, there is also an option of using BigQuery and their EXTERNAL_QUERY syntax.

Using BigQuery, if you want to run a query

SELECT name::text,created_at::text FROM repo LIMIT 5;

against the Prod CloudSQL database, you need to run

SELECT * FROM EXTERNAL_QUERY("", "SELECT name::text,created_at::text FROM repo LIMIT 5;");

in the BigQuery editor (passing the PostgreSQL query in the second parameter to EXTERNAL_QUERY).

Connecting to Postgres

Install the command line tools

If you didn’t yet, install Google Cloud SDK. Ensure, that gcloud command is reachable on your path.

Install the Cloud SQL proxy by running this command with gcloud:

  gcloud components install cloud_sql_proxy

Command line only use (pgsql)

You may use these gcloud commands to connect directly to the databases:

  • Default db {Password}

      gcloud beta sql connect --project sourcegraph-dev sg-cloud-732a936743 --user=dev-readonly -d=sg
  • Code intel db {Password}

      gcloud beta sql connect --project sourcegraph-dev sg-cloud-code-intel-9fc67e507c  --user=dev-readonly -d=sg

    Go to Example Queries to continue

Proxy for advanced use

Run the cloud_sql_proxy against our production instance

  cloud_sql_proxy -instances=sourcegraph-dev:us-central1:sg-cloud-732a936743=tcp:5555

Now, in a new terminal, run the command below. The database will be running on localhost:5555

  psql -h localhost -p 5555 -d sg -U 'dev-readonly'

Note, that to connect to localhost:5555 you still need to supply the postgres password stored in 1Password (mentioned above).

Example queries

🔥 You are directly interfacing with the production database. If you are unsure of any commands, please reach out in #dev-chat or #dev-ops. Please prefer using the readonly user frontend-dev

  • See all fields on a table (ie the repo table)
      \d+ repo
  • See the total number of rows in the repo table
      SELECT COUNT(*) FROM repo;

Performance monitoring

We run a PgHero deployment as well you can use to analyze slow queries and overall database performance.

  kubectl port-forward -n monitoring deploy/pghero 8080:8080

And then navigate to http://localhost:8080 to view the dashboard

See additional Postgres tips in our incident docs

Dogfood specific

Dogfood runs Sourcegraph completely on Kubernetes. You can port-forward the pgsql deployment:

  kubectl port-forward -n dogfood-k8s deploy/pgsql 8080:5432

And access it locally:

  pgcli -h localhost -p 8080 -d sg -U 'sg'