python - launch tornado app on port 80 on remote server -

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i have flask app wrapped in tornado server , trying run app on remote server when got error:

traceback (most recent call last):   file "run.py", line 7, in <module>     server.listen(80)   file "/home/ec2-user/gatekeeper/local/lib/python2.7/site-packages/tornado/tcpserver.py", line 126, in listen     sockets = bind_sockets(port, address=address)   file "/home/ec2-user/gatekeeper/local/lib/python2.7/site-packages/tornado/netutil.py", line 187, in bind_sockets     sock.bind(sockaddr)   file "/usr/lib64/python2.7/socket.py", line 224, in meth     return getattr(self._sock,name)(*args) socket.error: [errno 13] permission denied

so tried use sudo , got this:

traceback (most recent call last):   file "run.py", line 1, in <module>     tornado.wsgi import wsgicontainer importerror: no module named tornado.wsgi

so wondering if must install tornado root in turn mean virtualenv practically useless.

how launching app , interacting virtualenv? sudo removes environment variables, deactivate "activated" virtualenv. if using source $env/bin/activate, need after sudo. or can avoid using activate running virtualenv's python executable: sudo $env/bin/python run.py.


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