Ceph » mgr » Dashboard

How to reproduce¶

• Enable cephadm and provision at least one service.
• Start the Dashboard.
• Error on the landing page:
  

Analysis¶

• The backend raise an exception when receiving /api/health/minimal request. The backend raises the exception when retrieving iSCSI service URL from orchestrator. (https://github.com/ceph/ceph/blob/b57403de206dfe80b437a2d5b38c8d68afab0335/src/pybind/mgr/dashboard/services/iscsi_config.py#L80-L90)
  

  "Traceback (most recent call last):
    File \"/usr/lib/python3.7/site-packages/cherrypy/_cprequest.py\", line 631, in respond
      self._do_respond(path_info)
    File \"/usr/lib/python3.7/site-packages/cherrypy/_cprequest.py\", line 690, in _do_respond
      response.body = self.handler()
    File \"/usr/lib/python3.7/site-packages/cherrypy/lib/encoding.py\", line 221, in __call__
      self.body = self.oldhandler(*args, **kwargs)
    File \"/usr/lib/python3.7/site-packages/cherrypy/_cptools.py\", line 237, in wrap
      return self.newhandler(innerfunc, *args, **kwargs)
    File \"/ceph/src/pybind/mgr/dashboard/services/exception.py\", line 93, in dashboard_exception_handler
      return handler(*args, **kwargs)
    File \"/usr/lib/python3.7/site-packages/cherrypy/_cpdispatch.py\", line 60, in __call__
      return self.callable(*self.args, **self.kwargs)
    File \"/ceph/src/pybind/mgr/dashboard/controllers/__init__.py\", line 665, in inner
      ret = func(*args, **kwargs)
    File \"/ceph/src/pybind/mgr/dashboard/controllers/health.py\", line 199, in minimal
      return self.health_minimal.all_health()
    File \"/ceph/src/pybind/mgr/dashboard/controllers/health.py\", line 62, in all_health
      result['iscsi_daemons'] = self.iscsi_daemons()
    File \"/ceph/src/pybind/mgr/dashboard/controllers/health.py\", line 126, in iscsi_daemons
      for gateway_name in IscsiGatewaysConfig.get_gateways_config()['gateways']:
    File \"/ceph/src/pybind/mgr/dashboard/services/iscsi_config.py\", line 125, in get_gateways_config
      orch_config = cls._load_config_from_orchestrator()
    File \"/ceph/src/pybind/mgr/dashboard/services/iscsi_config.py\", line 86, in _load_config_from_orchestrator
      'service_url': instance.service_url
  AttributeError: 'ServiceDescription' object has no attribute 'hostname'
  
  

• Some problems are observed here:
  • cephadm returns services that are not in `iscsi` type. An issue was created to track this. (https://tracker.ceph.com/issues/44512)
  • ServiceDescription has no `hostname` member. Service now doesn't represent any individual daemon, we should move to DaemonDescription (list daemons)
  • iSCSI support is not ready in cepadm yet, not sure how to get service_url of iSCSI daemons.