Ceph » mgr » Dashboard

Hi, Thanks for reporting an issue. Can you provide more information about the problem?

• What version of Ceph are you running?
• Can you resolve RGW hostnames on active MGR node?
• Can't you even see the Object Gateways -> Daemons page? Any error pop-up on the page?

Hi,

Were Running Ceph Nautilus 14.2.2, deployed using ceph-ansible.

Yes all 9 RGW instance hostnames are resolvable from active MGR node (3 serve SWIFT API, 6 serve S3 API)

Dashboard > Object > Gateways > Daemons; shows a blue information dialogue :-
"RGW REST API cannot be reached: Temporary failure in name resolution [errno -3]. Please check your configuration and that the API endpoint is accessible
Please consult the documentation on how to configure and enable the Object Gateway management functionality."

Results in following message in /var/log/ceph/ceph-mgr.$HOST.log:
2019-08-20 09:26:24.837 7f68389b0700 0 mgr[dashboard] RGW REST API failed GET, connection error: [errno: -3] Temporary failure in name resolution

Please let me know if you need further info or log output, thanks.

Hi some further log output I noticed - I have not seen this message again since disabling/re-enabling the dashboard module.

From /var/log/ceph/ceph-mgr.$HOST.log:

2019-08-15 13:01:26.592 7fca374e0700  0 mgr[dashboard] [15/Aug/2019:13:01:26] HTTP 
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/cherrypy/_cprequest.py", line 670, in respond
    response.body = self.handler()
  File "/usr/lib/python2.7/dist-packages/cherrypy/lib/encoding.py", line 220, in __call__
    self.body = self.oldhandler(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/cherrypy/_cptools.py", line 237, in wrap
    return self.newhandler(innerfunc, *args, **kwargs)
  File "/usr/share/ceph/mgr/dashboard/services/exception.py", line 88, in dashboard_exception_handler
    return handler(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/cherrypy/_cpdispatch.py", line 60, in __call__
    return self.callable(*self.args, **self.kwargs)
  File "/usr/share/ceph/mgr/dashboard/controllers/__init__.py", line 649, in inner
    ret = func(*args, **kwargs)
  File "/usr/share/ceph/mgr/dashboard/controllers/rgw.py", line 28, in status
    if not instance.is_service_online():
  File "/usr/share/ceph/mgr/dashboard/rest_client.py", line 507, in func_wrapper
    **kwargs)
  File "/usr/share/ceph/mgr/dashboard/services/rgw_client.py", line 304, in is_service_online
    _ = request({'format': 'json'})
  File "/usr/share/ceph/mgr/dashboard/rest_client.py", line 313, in __call__
    data, raw_content)
  File "/usr/share/ceph/mgr/dashboard/rest_client.py", line 445, in do_request
    ex.args[0].reason.args[0])
  File "/usr/lib/python2.7/re.py", line 141, in match
    return _compile(pattern, flags).match(string)
TypeError: expected string or buffer
2019-08-15 13:01:26.592 7fca374e0700  0 mgr[dashboard] [::ffff:10.31.129.22:52508] [GET] [500] [15.020s] [admin] [1.7K] /api/rgw/status

Notice the mashed up ipv4/ipv6 addresses after the stack trace.

After re-enabling dashboard the only log message seen is as per last post

2019-08-20 09:26:24.837 7f68389b0700 0 mgr[dashboard] RGW REST API failed GET, connection error: [errno: -3] Temporary failure in name resolution