Is there a API available to get the info provided by passenger-status command

[Laxmi Prasanna Gunna]

Hi,

      I would like to know if there is any API available to get the information provided by passenger-status command (like no.of requests in the queue,no.of processes etc).

If not,only way out is parsing the output of this command.

Thankyou. 

[Hongli Lai]

There is, but it's not official/public. This means that the access
method is rudimentary and not very user friendly, that the access
method may change in the future, that there is not a lot of
documentation, and that the output format may change
in the future.

The API server listens on a Unix domain socket (not TCP socket) called
'agents.s/core_api' inside the instance directory[1][2]. The following
CLI commands correspond to these HTTP requests:
passenger-status (for process information): GET /pool.txt
passenger-status --show=server (for request information): GET /server.json
All HTTP requests must be authenticated with HTTP basic
authentication. Username 'ro_admin', password is stored in the file
read_only_admin_password.txt inside the instance directory.

We have a convenience wrapper around all of this, in the form of the
'passenger-config api-call' command. Run that with --help to learn
more. My opinion is that your best bet is to use the `passenger-config
api-call` command instead of making raw HTTP requests.

[1] https://www.phusionpassenger.com/documentation/Design%20and%20Architecture.html#instance_state_and_communication
[2] https://www.phusionpassenger.com/library/config/nginx/reference/#passenger_instance_registry_dir

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