Conclusion:

For salt in python2.7 environment, you need to install PIP install MySQL python

For salt in the python 3 environment, PIP should install mysqlclient in the same directory as salt

1. Production environment 3.6, how to adjust this

1. Salt in February 2019

[root@IP ~]# salt-call --versions-report
Salt Version:
           Salt: 2019.2.0
 
Dependency Versions:
           cffi: Not Installed
       cherrypy: 5.6.0
       dateutil: Not Installed
      docker-py: Not Installed
          gitdb: Not Installed
      gitpython: Not Installed
          ioflo: Not Installed
         Jinja2: 2.8.1
        libgit2: Not Installed
        libnacl: Not Installed
       M2Crypto: Not Installed
           Mako: Not Installed
   msgpack-pure: Not Installed
 msgpack-python: 0.5.6
   mysql-python: 1.4.6
      pycparser: Not Installed
       pycrypto: 2.6.1
   pycryptodome: Not Installed
         pygit2: Not Installed
         Python: 3.6.8 (default, Aug  7 2019, 17:28:10)
   python-gnupg: Not Installed
         PyYAML: 3.11
          PyZMQ: 15.3.0
           RAET: Not Installed
          smmap: Not Installed
        timelib: Not Installed
        Tornado: 4.4.2
            ZMQ: 4.1.4
 
System Versions:
           dist: centos 7.3.1611 Core
         locale: UTF-8
        machine: x86_64
        release: 3.10.0-514.el7.x86_64
         system: Linux
        version: CentOS Linux 7.3.1611 Core
 
[root@IP ~]#

2, python3.6

2, vengeance

2019-11-29 14:59:46,062 [salt.master      :2195][ERROR   ][6219] Failed to allocate a jid. The requested returner 'mysql' could not be loaded.
2019-11-29 14:59:46,063 [salt.transport.zeromq:754 ][ERROR   ][6219] Some exception handling a payload from minion
Traceback (most recent call last):
  File "/usr/lib/python3.6/site-packages/salt/transport/zeromq.py", line 750, in handle_message
    ret, req_opts = yield self.payload_handler(payload)
  File "/usr/lib64/python3.6/site-packages/tornado/gen.py", line 1015, in run
    value = future.result()
  File "/usr/lib64/python3.6/site-packages/tornado/concurrent.py", line 236, in result
    raise_exc_info(self._exc_info)
  File "<string>", line 3, in raise_exc_info
  File "/usr/lib64/python3.6/site-packages/tornado/gen.py", line 270, in wrapper
    result = func(*args, **kwargs)
  File "/usr/lib64/python3.6/types.py", line 248, in wrapped
    coro = func(*args, **kwargs)
  File "/usr/lib/python3.6/site-packages/salt/master.py", line 1064, in _handle_payload
    'clear': self._handle_clear}[key](load)
  File "/usr/lib/python3.6/site-packages/salt/master.py", line 1095, in _handle_clear
    ret = getattr(self.clear_funcs, cmd)(load), {'fun': 'send_clear'}
  File "/usr/lib/python3.6/site-packages/salt/master.py", line 2137, in publish
    payload = self._prep_pub(minions, jid, clear_load, extra, missing)
  File "/usr/lib/python3.6/site-packages/salt/master.py", line 2233, in _prep_pub
    self.event.fire_event({'minions': minions}, clear_load['jid'])
  File "/usr/lib/python3.6/site-packages/salt/utils/event.py", line 744, in fire_event
    salt.utils.stringutils.to_bytes(tag),
  File "/usr/lib/python3.6/site-packages/salt/utils/stringutils.py", line 61, in to_bytes
    raise TypeError('expected bytes, bytearray, or str')
TypeError: expected bytes, bytearray, or str
2019-11-29 14:59:46,065 [tornado.general  :452 ][ERROR   ][6219] Uncaught exception, closing connection.
Traceback (most recent call last):
  File "/usr/lib64/python3.6/site-packages/zmq/sugar/socket.py", line 356, in send_multipart
    _buffer_type(msg)
TypeError: memoryview: a bytes-like object is required, not 'str'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib64/python3.6/site-packages/zmq/eventloop/zmqstream.py", line 444, in _handle_events
    self._handle_send()
  File "/usr/lib64/python3.6/site-packages/zmq/eventloop/zmqstream.py", line 487, in _handle_send
    status = self.socket.send_multipart(msg, **kwargs)
  File "/usr/lib64/python3.6/site-packages/zmq/sugar/socket.py", line 363, in send_multipart
    i, rmsg,
TypeError: Frame 0 ('Some exception handling minion ...) does not support the buffer interface.
2019-11-29 14:59:46,065 [tornado.application:632 ][ERROR   ][6219] Exception in callback None
Traceback (most recent call last):
  File "/usr/lib64/python3.6/site-packages/zmq/sugar/socket.py", line 356, in send_multipart
    _buffer_type(msg)
TypeError: memoryview: a bytes-like object is required, not 'str'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib64/python3.6/site-packages/tornado/ioloop.py", line 886, in start
    handler_func(fd_obj, events)
  File "/usr/lib64/python3.6/site-packages/tornado/stack_context.py", line 274, in null_wrapper
    return fn(*args, **kwargs)
  File "/usr/lib64/python3.6/site-packages/zmq/eventloop/zmqstream.py", line 444, in _handle_events
    self._handle_send()
  File "/usr/lib64/python3.6/site-packages/zmq/eventloop/zmqstream.py", line 487, in _handle_send
    status = self.socket.send_multipart(msg, **kwargs)
  File "/usr/lib64/python3.6/site-packages/zmq/sugar/socket.py", line 363, in send_multipart
    i, rmsg,
TypeError: Frame 0 ('Some exception handling minion ...) does not support the buffer interface

3. Reason:

Again, I was prompted that mysqlpy was not loaded. This time, I did

MySQL environment is also 3.6

Salt is also 3.6

Is the position not together

4. Solution 1:

Unload and reload

[root@IP ~]# pip3 uninstall mysqlclient
[root@IP salt]# pip3 install  mysql-client

There are still problems

5. Solution 2: complete

Maybe it’s not in a directory

PIP installation specified directory https://blog.csdn.net/guotong1988/article/details/61196363

[root@IP salt]# pip3 install --target=/usr/lib/python3.6/site-packages/ mysql-client

6, results: has become