Ronald, thank you for the answer!
I'm using localhost, just forgot to start a server... But now after I did it and created a new profile with gnuhealth database I try to connect and get following messages:
ERROR:common.message:Traceback (most recent call last):
File "/home/gnuhealth/.local/lib/python2.7/site-packages/tryton/gui/window/dblogin.py", line 633, in run
if not common.test_server_version(host, port):
File "/home/gnuhealth/.local/lib/python2.7/site-packages/tryton/common/common.py", line 152, in test_server_version
version = rpc.server_version(host, port)
File "/home/gnuhealth/.local/lib/python2.7/site-packages/tryton/rpc.py", line 66, in server_version
result = connection.common.server.version(None, None)
File "/usr/lib/python2.7/xmlrpclib.py", line 1224, in __call__
return self.__send(self.__name, args)
File "/home/gnuhealth/.local/lib/python2.7/site-packages/tryton/jsonrpc.py", line 305, in __request
verbose=self.__verbose
File "/usr/lib/python2.7/xmlrpclib.py", line 1264, in request
return self.single_request(host, handler, request_body, verbose)
File "/usr/lib/python2.7/xmlrpclib.py", line 1294, in single_request
response = h.getresponse(buffering=True)
File "/usr/lib/python2.7/httplib.py", line 1030, in getresponse
response.begin()
File "/usr/lib/python2.7/httplib.py", line 407, in begin
version, status, reason = self._read_status()
File "/usr/lib/python2.7/httplib.py", line 371, in _read_status
raise BadStatusLine(line)
BadStatusLine: ''