Salt: AttributeError: type object 'IOLoop' has no attribute 'initialized'

Created on 5 Mar 2018 · 9Comments · Source: saltstack/salt

Used salt for the past 2 days, only running the highstate commands. Went back to it this morning, none of the services are working. They all give the following error:

2018-03-05 12:29:16,104 [salt.utils.process:670 ][ERROR   ][19428] An un-handled exception from the multiprocessing process 'EventPublisher-8' was caught:
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/salt/utils/process.py", line 663, in _run
    return self._original_run()
  File "/usr/lib/python2.7/dist-packages/salt/utils/event.py", line 1107, in run
    self.publisher.start()
  File "/usr/lib/python2.7/dist-packages/salt/transport/ipc.py", line 517, in start
    io_loop=self.io_loop,
TypeError: add_accept_handler() got an unexpected keyword argument 'io_loop'

(Same TypeError for other processes is outputted to, just omitted them from this report for now.)

I went through everything and got everything up to the latest versions, but it was all unrelated packages.

Looking back at my logs it looks like my server had run out of memory at some point prior to this, maybe the cause of the bugs? I've also cleared the cache for the master and minion.

Versions Report

Salt Version:
           Salt: 2017.7.4

Dependency Versions:
           cffi: Not Installed
       cherrypy: Not Installed
       dateutil: 2.4.2
      docker-py: Not Installed
          gitdb: 0.6.4
      gitpython: 1.0.1
          ioflo: Not Installed
         Jinja2: 2.10
        libgit2: Not Installed
        libnacl: Not Installed
       M2Crypto: Not Installed
           Mako: 1.0.3
   msgpack-pure: Not Installed
 msgpack-python: 0.4.6
   mysql-python: 1.3.7
      pycparser: Not Installed
       pycrypto: 2.6.1
   pycryptodome: Not Installed
         pygit2: Not Installed
         Python: 2.7.12 (default, Dec  4 2017, 14:50:18)
   python-gnupg: Not Installed
         PyYAML: 3.12
          PyZMQ: 15.2.0
           RAET: Not Installed
          smmap: 0.9.0
        timelib: Not Installed
        Tornado: 5.0
            ZMQ: 4.1.4

System Versions:
           dist: Ubuntu 16.04 xenial
         locale: UTF-8
        machine: x86_64
        release: 4.4.0-116-generic
         system: Linux
        version: Ubuntu 16.04 xenial

expected-behavior

Source