Unable to connect to OnCall engine

[kosfango]

What went wrong?

Grafana Oncall http://10.0.1.26:8888
Grafana 11.2.3 http://10.0.1.26:3000

2024-10-24 10:22:27 source=engine:uwsgi status=200 method=GET path=/api/internal/v1/health/ latency=0.001598 google_trace_id=- protocol=HTTP/1.1 resp_size=221 req_body_size=0
2024-10-24 10:22:27 source=engine:app google_trace_id=none logger=apps.user_management.sync RBAC status org=1 rbac_enabled=False
2024-10-24 10:22:27 source=engine:app google_trace_id=none logger=root outbound latency=0.016752496361732483 status=200 method=HEAD url=http://10.0.168.26:3000/api/org slow=0
2024-10-24 10:22:27 source=engine:app google_trace_id=none logger=root inbound latency=0.119812 status=200 method=POST path=/api/internal/v1/plugin/v2/install user_agent=Go-http-client/1.1 content-length=3948 slow=0
2024-10-24 10:22:27 source=engine:uwsgi status=200 method=POST path=/api/internal/v1/plugin/v2/install latency=0.122875 google_trace_id=- protocol=HTTP/1.1 resp_size=428 req_body_size=3948
2024-10-24 10:22:27 source=engine:app google_trace_id=none logger=root inbound latency=0.000512 status=200 method=GET path=/api/internal/v1/health/ user_agent=Go-http-client/1.1 content-length=0 slow=0
2024-10-24 10:22:27 source=engine:uwsgi status=200 method=GET path=/api/internal/v1/health/ latency=0.001337 google_trace_id=- protocol=HTTP/1.1 resp_size=221 req_body_size=0
2024-10-24 10:22:27 source=engine:app google_trace_id=none logger=apps.social_auth.middlewares SocialAuthAuthCanceledExceptionMiddleware.process_exception: 'NoneType' object has no attribute 'endswith'
2024-10-24 10:22:27 source=engine:app google_trace_id=none logger=django.request Internal Server Error: /api/internal/v1/plugin/v2/status
Traceback (most recent call last):
  File "/usr/local/lib/python3.12/site-packages/django/core/handlers/exception.py", line 55, in inner
    response = get_response(request)
               ^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/site-packages/django/core/handlers/base.py", line 197, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/site-packages/django/views/decorators/csrf.py", line 56, in wrapper_view
    return view_func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/site-packages/django/views/generic/base.py", line 104, in view
    return self.dispatch(request, *args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/site-packages/rest_framework/views.py", line 509, in dispatch
    response = self.handle_exception(exc)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.12/site-packages/rest_framework/views.py", line 469, in handle_exception
    self.raise_uncaught_exception(exc)
  File "/usr/local/lib/python3.12/site-packages/rest_framework/views.py", line 480, in raise_uncaught_exception
    raise exc
  File "/usr/local/lib/python3.12/site-packages/rest_framework/views.py", line 506, in dispatch
    response = handler(request, *args, **kwargs)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/etc/app/apps/grafana_plugin/views/status_v2.py", line 33, in get
    api_url = create_engine_url("")
              ^^^^^^^^^^^^^^^^^^^^^
  File "/etc/app/common/api_helpers/utils.py", line 96, in create_engine_url
    if not base.endswith("/"):
           ^^^^^^^^^^^^^
AttributeError: 'NoneType' object has no attribute 'endswith'
2024-10-24 10:22:27 source=engine:app google_trace_id=none logger=root inbound latency=0.024812 status=500 method=GET path=/api/internal/v1/plugin/v2/status user_agent=GrafanaOnCall/1.11.3 content-length=0 slow=0 user_id=16 org_id=1 org_slug=self_hosted_org
2024-10-24 10:22:27 source=engine:uwsgi status=500 method=GET path=/api/internal/v1/plugin/v2/status latency=0.026071 google_trace_id=- protocol=HTTP/1.1 resp_size=385 req_body_size=0

curl backend answer:

    "pluginConnection": {
        "settings": {
            "ok": true
        },
        "service_account_token": {
            "ok": true
        },
            "ok": true
        },
        "grafana_url_from_engine": {
            "ok": false,
            "error": "Not validated"
        },
        "oncall_api_url": {
            "ok": false,
            "error": "Unable to connect to OnCall engine: /api/internal/v1/plugin/v2/status, status code: 500"
        },
        "oncall_token": {
            "ok": false,
            "error": "Not validated"
        }
    },
    "license": "",
    "version": "",
    "currently_undergoing_maintenance_message": "",
    "api_url": ""
}

ENV:

DOMAIN="http://10.0.1.26:8888"
SECRET_KEY="key"
DATABASE_TYPE="sqlite3"
BROKER_TYPE="redis"
REDIS_URI="redis://10.0.1.26:6379/0"
DJANGO_SETTINGS_MODULE="settings.hobby"
CELERY_WORKER_QUEUE="default,critical,long,slack,telegram,webhook,retry,celery,grafana"
CELERY_WORKER_CONCURRENCY="1"
CELERY_WORKER_MAX_TASKS_PER_CHILD="100"
CELERY_WORKER_SHUTDOWN_INTERVAL="65m"
CELERY_WORKER_BEAT_ENABLED="True"
GRAFANA_API_URL="http://10.0.1.26:3000"

How do we reproduce it?

1. Open Grafana OnCall and do X
2. Now click button Y
3. Wait for the browser to crash. Error message says: "Error..."

Grafana OnCall Version

v1.11.3

Product Area

API, Auth

Grafana OnCall Platform?

Docker

User's Browser?

Chrome 109.0.5414.120 (Official Build) (64-bit)

Anything else to add?

No response

[kosfango]

Seems, I didn't understand variables mapping:
https://github.com/grafana/oncall/blob/dev/docker-compose.yml#L4C3-L4C20
empirically, it's known that variable $DOMAIN is needed for grafana, but in this case I don't understand, why need variable definging in compose file:
BASE_URL: $DOMAIN