It seems everytime I restart my Rails 6.0 application using passenger-config restart-app /path/to/app, I get a warning that there are stale instances, like so:
*** Cleaning stale instance directory /home/user/rails_apps/passenger-instreg/passenger.gJHicfi
Warning: Directory not empty @ dir_s_rmdir - /home/user/rails_apps/passenger-instreg/passenger.gJHicfi
I did configure a specific PassengerInstanceRegistryDir in the Apache module configuration, as well as defined the PASSENGER_INSTANCE_REGISTRY_DIR env variable, but still, my user (under which I run the passenger utilities) does not seem have the correct permissions to remove the stale directories.
How do I avoid this?
I run Passenger 6.0.6 on Red Hat Enterprise Linux release 8.2 (Ootpa), with Ruby 2.7.1 installed via rbenv.