master.log

2018-04-03 22:58:09,514 [tornado.application:123 ][ERROR   ][5766] Future exception was never retrieved: Traceback (most recent call last):
  File "/usr/lib64/python2.7/site-packages/tornado/gen.py", line 230, in wrapper
    yielded = next(result)
  File "/usr/lib/python2.7/site-packages/salt/transport/zeromq.py", line 676, in handle_message
    stream.send(self.serial.dumps(self._auth(payload['load'])))
  File "/usr/lib/python2.7/site-packages/salt/transport/mixins/auth.py", line 436, in _auth
    pub = salt.crypt.get_rsa_pub_key(pubfn)
  File "/usr/lib/python2.7/site-packages/salt/crypt.py", line 210, in get_rsa_pub_key
    key = RSA.load_pub_key(path)
  File "/usr/lib64/python2.7/site-packages/M2Crypto/RSA.py", line 426, in load_pub_key
    return load_pub_key_bio(bio)
  File "/usr/lib64/python2.7/site-packages/M2Crypto/RSA.py", line 441, in load_pub_key_bio
    rsa_error()
  File "/usr/lib64/python2.7/site-packages/M2Crypto/RSA.py", line 330, in rsa_error
    raise RSAError(Err.get_error_message())
RSAError: no start line

yum.log

Apr 03 22:35:21 Updated: salt-2018.3.0-1.el7.noarch
Apr 03 22:35:24 Updated: salt-master-2018.3.0-1.el7.noarch
Apr 03 22:35:24 Installed: python2-typing-3.5.2.2-3.el7.noarch
Apr 03 22:35:24 Updated: m2crypto-0.28.2-3.el7.x86_64
Apr 03 22:35:24 Updated: salt-cloud-2018.3.0-1.el7.noarch
Apr 03 22:35:27 Updated: salt-minion-2018.3.0-1.el7.noarch

Master --versions-report

Salt Version:
           Salt: 2018.3.0
 
Dependency Versions:
           cffi: 1.6.0
       cherrypy: Not Installed
       dateutil: 1.5
      docker-py: Not Installed
          gitdb: Not Installed
      gitpython: Not Installed
          ioflo: Not Installed
         Jinja2: 2.7.2
        libgit2: 0.24.6
        libnacl: Not Installed
       M2Crypto: 0.28.2
           Mako: Not Installed
   msgpack-pure: Not Installed
 msgpack-python: 0.5.1
   mysql-python: 1.2.5
      pycparser: 2.14
       pycrypto: 2.6.1
   pycryptodome: 3.4.3
         pygit2: 0.24.2
         Python: 2.7.5 (default, Aug  4 2017, 00:39:18)
   python-gnupg: 0.3.8
         PyYAML: 3.11
          PyZMQ: 15.3.0
           RAET: Not Installed
          smmap: Not Installed
        timelib: Not Installed
        Tornado: 4.2.1
            ZMQ: 4.1.4
 
System Versions:
           dist: centos 7.4.1708 Core
         locale: UTF-8
        machine: x86_64
        release: 4.15.12-x86_64-linode105
         system: Linux
        version: CentOS Linux 7.4.1708 Core