[root@shadowsocksr]# python server.py
IPv6 support
2018-05-13 14:58:54 INFO util.py:85 loading libcrypto from libcrypto.so.10
2018-05-13 14:58:54 INFO asyncdns.py:324 dns server: [('8.8.8.8', 53), ('8.8.4.4', 53)]
2018-05-13 14:58:54 INFO shell.py:72 ShadowsocksR 3.4.0 2017-07-27
2018-05-13 14:58:54 INFO db_transfer.py:238 current process RLIMIT_NOFILE resource: soft 1024 hard 4096
2018-05-13 14:58:55 ERROR db_transfer.py:266 Traceback (most recent call last):
File "/root/shadowsocksr/db_transfer.py", line 248, in thread_db
rows = db_instance.pull_db_all_user()
File "/root/shadowsocksr/db_transfer.py", line 383, in pull_db_all_user
db=self.cfg["db"], charset='utf8')
File "/usr/lib/python2.6/site-packages/cymysql/__init__.py", line 81, in Connect
return Connection(*args, **kwargs)
File "/usr/lib/python2.6/site-packages/cymysql/connections.py", line 237, in __init__
self._connect()
File "/usr/lib/python2.6/site-packages/cymysql/connections.py", line 403, in _connect
self._request_authentication()
File "/usr/lib/python2.6/site-packages/cymysql/connections.py", line 477, in _request_authentication
auth_packet = MysqlPacket(self)
File "/usr/lib/python2.6/site-packages/cymysql/packet.py", line 67, in __init__
raise_mysql_exception(self.__data)
File "/usr/lib/python2.6/site-packages/cymysql/err.py", line 142, in raise_mysql_exception
_check_mysql_exception(errinfo)
File "/usr/lib/python2.6/site-packages/cymysql/err.py", line 138, in _check_mysql_exception
raise InternalError(errno, errorvalue)
InternalError: (1043, u'Bad handshake')
解决：
wget https://pypi.python.org/packages/source/p/pip/pip-9.0.1.tar.gz --no-check-certificate tar -xzvf pip-9.0.1.tar.gz cd pip-9.0.1 python setup.py install pip install cymysql==0.9.4
因pip版本太高 无法指定安装低版本cymysql，降低pip版本指定安装低版本cymysql就行了
错误就是pip和 cymysql版本都太高