Concurrent operations in the command-line interface

pglift’s CLI uses an internal lock mechanism to prevent some commands to run concurrently. It’s mostly for operations that alter the system (instance, database or role creation, update or removal).

Thus, time-consuming operations (for example creating a database using cloning) will possibly prevent users from doing other simple operations.

Currently this mechanism is very generic and users might be surprised to see a “another operation is in progress” error message for operations that they don’t expect to conflict.

For the locking mechanism to work, pglift relies on a file. Even though not recommended, the path to this file may be changed via site settings:

settings.yaml

 cli:
   lock_file: '/tmp/.pglift.lock'