There were some incompatible changes. Most churn was from switching from the now-deprecated fcntl:flock() function to fcntl::Flock::lock(). The new function returns a guard object, while with the old function, the lock was associated directly with the file descriptor. It's good to stay up-to-date in general, but the impetus to do this now is that in https://github.com/neondatabase/neon/pull/11929, I want to use some functions that were added only in the latest version of 'nix', and it's nice to not have to build multiple versions. (Although, different versions of 'nix' are still pulled in as indirect dependencies from other packages)
Local Development Control Plane (neon_local)
This crate contains tools to start a Neon development environment locally. This utility can be used with the cargo neon command. This is a convenience to invoke
the neon_local binary.
Note: this is a dev/test tool -- a minimal control plane suitable for testing code changes locally, but not suitable for running production systems.
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.