Arch Linux

Ceph provides multiple services, one is the ceph-mgr daemon. It provides a web-ui written in flask. It has missing dependencies:

Jan 12 18:05:05 systemd[1]: Started Ceph cluster manager daemon.
Jan 12 18:05:05 ceph-mgr[2072]: 2018-01-12 18:05:05.828746 645fe4de1700 -1 mgr load Module not found: 'restful'
Jan 12 18:05:05 ceph-mgr[2072]: 2018-01-12 18:05:05.828797 645fe4de1700 -1 mgr load Traceback (most recent call last):
Jan 12 18:05:05 ceph-mgr[2072]: File "/usr/lib/ceph/mgr/restful/__init__.py", line 1, in <module>
Jan 12 18:05:05 ceph-mgr[2072]: from module import * # NOQA
Jan 12 18:05:05 ceph-mgr[2072]: File "/usr/lib/ceph/mgr/restful/module.py", line 18, in <module>
Jan 12 18:05:05 ceph-mgr[2072]: from pecan import jsonify, make_app
Jan 12 18:05:05 ceph-mgr[2072]: File "/usr/lib/python2.7/site-packages/pecan/__init__.py", line 1, in <module>
Jan 12 18:05:05 ceph-mgr[2072]: from .core import (
Jan 12 18:05:05 ceph-mgr[2072]: File "/usr/lib/python2.7/site-packages/pecan/core.py", line 12, in <module>
Jan 12 18:05:05 ceph-mgr[2072]: from webob import (Request as WebObRequest, Response as WebObResponse, exc,
Jan 12 18:05:05 ceph-mgr[2072]: ImportError: No module named webob


I was able to fix that by installing python2-webob. Afterwards I got:

Jan 12 18:06:20 ceph-mgr[2172]: 2018-01-12 18:06:20.897879 64f07e5e8700 -1 mgr load Module not found: 'restful'
Jan 12 18:06:20 ceph-mgr[2172]: 2018-01-12 18:06:20.897967 64f07e5e8700 -1 mgr load Traceback (most recent call last):
Jan 12 18:06:20 ceph-mgr[2172]: File "/usr/lib/ceph/mgr/restful/__init__.py", line 1, in <module>
Jan 12 18:06:20 ceph-mgr[2172]: from module import * # NOQA
Jan 12 18:06:20 ceph-mgr[2172]: File "/usr/lib/ceph/mgr/restful/module.py", line 18, in <module>
Jan 12 18:06:20 ceph-mgr[2172]: from pecan import jsonify, make_app
Jan 12 18:06:20 ceph-mgr[2172]: File "/usr/lib/python2.7/site-packages/pecan/__init__.py", line 1, in <module>
Jan 12 18:06:20 ceph-mgr[2172]: from .core import (
Jan 12 18:06:20 ceph-mgr[2172]: File "/usr/lib/python2.7/site-packages/pecan/core.py", line 17, in <module>
Jan 12 18:06:20 ceph-mgr[2172]: from .jsonify import encode as dumps
Jan 12 18:06:20 ceph-mgr[2172]: File "/usr/lib/python2.7/site-packages/pecan/jsonify.py", line 23, in <module>
Jan 12 18:06:20 ceph-mgr[2172]: from singledispatch import singledispatch
Jan 12 18:06:20 ceph-mgr[2172]: ImportError: No module named singledispatch

Can be fixed by installing python2-singledispatch. Afterwards:

Jan 12 18:15:41 ceph-mgr[2508]: 2018-01-12 18:15:41.815511 6ae720480700 -1 mgr load Module not found: 'restful'
Jan 12 18:15:41 ceph-mgr[2508]: 2018-01-12 18:15:41.815555 6ae720480700 -1 mgr load Traceback (most recent call last):
Jan 12 18:15:41 ceph-mgr[2508]: File "/usr/lib/ceph/mgr/restful/__init__.py", line 1, in <module>
Jan 12 18:15:41 ceph-mgr[2508]: from module import * # NOQA
Jan 12 18:15:41 ceph-mgr[2508]: File "/usr/lib/ceph/mgr/restful/module.py", line 18, in <module>
Jan 12 18:15:41 ceph-mgr[2508]: from pecan import jsonify, make_app
Jan 12 18:15:41 ceph-mgr[2508]: File "/usr/lib/python2.7/site-packages/pecan/__init__.py", line 8, in <module>
Jan 12 18:15:41 ceph-mgr[2508]: from .middleware.debug import DebugMiddleware
Jan 12 18:15:41 ceph-mgr[2508]: File "/usr/lib/python2.7/site-packages/pecan/middleware/debug.py", line 32, in <module>
Jan 12 18:15:41 ceph-mgr[2508]: from mako.template import Template
Jan 12 18:15:41 ceph-mgr[2508]: ImportError: No module named mako.template

fixed by installing python2-mako. Also I noticed segfaults during the stop:

Jan 12 18:16:20 systemd[1]: Stopping Ceph cluster manager daemon...
Jan 12 18:16:20 ceph-mgr[2508]: 2018-01-12 18:16:20.377259 6ae71cc79700 -1 received signal: Terminated from PID: 1 task name: /sbin/init UID: 0
Jan 12 18:16:20 ceph-mgr[2508]: 2018-01-12 18:16:20.377326 6ae71cc79700 -1 mgr handle_signal *** Got signal Terminated ***
Jan 12 18:16:20 ceph-mgr[2508]: [12/Jan/2018:18:16:20] ENGINE Bus STOPPING
Jan 12 18:16:20 ceph-mgr[2508]: [12/Jan/2018:18:16:20] ENGINE HTTP Server cherrypy._cpwsgi_server.CPWSGIServer(('::', 7000)) shut down
Jan 12 18:16:20 ceph-mgr[2508]: [12/Jan/2018:18:16:20] ENGINE Bus STOPPED
Jan 12 18:16:20 ceph-mgr[2508]: [12/Jan/2018:18:16:20] ENGINE Bus EXITING
Jan 12 18:16:20 ceph-mgr[2508]: [12/Jan/2018:18:16:20] ENGINE Bus EXITED
Jan 12 18:16:20 ceph-mgr[2508]: [12/Jan/2018:18:16:20] ENGINE Waiting for child threads to terminate...
Jan 12 18:16:20 ceph-mgr[2508]: *** Caught signal (Segmentation fault) **
Jan 12 18:16:20 ceph-mgr[2508]: in thread 6ae72b919700 thread_name:ceph-mgr
Jan 12 18:16:20 ceph-mgr[2508]: ceph version 12.2.2 (cf0baeeeeba3b47f9427c6c97e2144b094b7e5ba) luminous (stable)
Jan 12 18:16:20 ceph-mgr[2508]: 1: (()+0x3a1afe) [0xcf494c0aafe]
Jan 12 18:16:20 ceph-mgr[2508]: 2: (()+0x11db0) [0x6ae7295afdb0]
Jan 12 18:16:20 ceph-mgr[2508]: 3: (std::vector<Option, std::allocator<Option> >::~vector()+0xc8) [0xcf494e39828]
Jan 12 18:16:20 ceph-mgr[2508]: 4: (()+0x37448) [0x6ae728934448]
Jan 12 18:16:20 ceph-mgr[2508]: 5: (()+0x3749a) [0x6ae72893449a]
Jan 12 18:16:20 ceph-mgr[2508]: 6: (__libc_start_main()+0xf1) [0x6ae72891df51]
Jan 12 18:16:20 ceph-mgr[2508]: 7: (_start()+0x2a) [0xcf494a5219a]
Jan 12 18:16:22 systemd[1]: ceph-mgr@.service: Main process exited, code=dumped, status=11/SEGV
Jan 12 18:16:22 systemd[1]: ceph-mgr@.service: Failed with result 'core-dump'.
Jan 12 18:16:22 systemd[1]: Stopped Ceph cluster manager daemon.
Jan 12 18:16:22 systemd[1]: Started Ceph cluster manager daemon.
Jan 12 18:16:24 ceph-mgr[2600]: [12/Jan/2018:18:16:24] ENGINE Bus STARTING
Jan 12 18:16:24 ceph-mgr[2600]: [12/Jan/2018:18:16:24] ENGINE Serving on http://:::7000
Jan 12 18:16:24 ceph-mgr[2600]: [12/Jan/2018:18:16:24] ENGINE Bus STARTED