mirror of
https://github.com/neondatabase/neon.git
synced 2026-01-09 22:42:57 +00:00
8e8df1b453
Drop logical replication subscribers before compute starts on a non-main branch. Add new compute_ctl spec flag: drop_subscriptions_before_start If it is set, drop all the subscriptions from the compute node before it starts. To avoid race on compute start, use new GUC neon.disable_logical_replication_subscribers to temporarily disable logical replication workers until we drop the subscriptions. Ensure that we drop subscriptions exactly once when endpoint starts on a new branch. It is essential, because otherwise, we may drop not only inherited, but newly created subscriptions. We cannot rely only on spec.drop_subscriptions_before_start flag, because if for some reason compute restarts inside VM, it will start again with the same spec and flag value. To handle this, we save the fact of the operation in the database in the neon.drop_subscriptions_done table. If the table does not exist, we assume that the operation was never performed, so we must do it. If table exists, we check if the operation was performed on the current timeline. fixes: https://github.com/neondatabase/neon/issues/8790
Control Plane and Neon Local
This crate contains tools to start a Neon development environment locally. This utility can be used with the cargo neon command.
Example: Start with Postgres 16
To create and start a local development environment with Postgres 16, you will need to provide --pg-version flag to 3 of the start-up commands.
cargo neon init --pg-version 16
cargo neon start
cargo neon tenant create --set-default --pg-version 16
cargo neon endpoint create main --pg-version 16
cargo neon endpoint start main
Example: Create Test User and Database
By default, cargo neon starts an endpoint with cloud_admin and postgres database. If you want to have a role and a database similar to what we have on the cloud service, you can do it with the following commands when starting an endpoint.
cargo neon endpoint create main --pg-version 16 --update-catalog true
cargo neon endpoint start main --create-test-user true
The first command creates neon_superuser and necessary roles. The second command creates test user and neondb database. You will see a connection string that connects you to the test user after running the second command.