I had this problem a long time ago, right when an OF 1.0 branch became usable, but before Zaku was the official branch. Not sure if this still applies with the current version of nox. Anyway, someone had a similar problem, and the fix I suggested to them is below...
" I had this issue before after doing a fresh install on a Debian sid machine using the openflow-1.0 branch. What I found is, the function _handleSigchld has been moved-around/removed from more recent versions of TwistedPython. The fix I found was to go grab Twisted 8.0 and install it. I haven't tested the controller in a production setup yet, but the source compiles and I can run a simple switch without getting any error messages. " Anyway, maybe that will be of some help. Good luck... Tim Upthegrove Georgia Institute of Technology College of Computing (406)-437-1493 ----- Original Message ----- Hi, Version is : 10.1.0-2 Ubuntu 10.10. and also verified the function definition and is defined in /usr/lib/python2.6/dist-packages/twisted/internet/base.py This is the output of find command. $ sudo find / -name base.py /usr/lib/python2.6/dist-packages/twisted/persisted/journal/base.py /usr/lib/python2.6/dist-packages/twisted/internet/base.py /usr/lib/python2.6/dist-packages/apt/progress/base.py But I do not get clue why that error is coming. Any help is appreciated. Thanks, Ramana. On Mon, Nov 15, 2010 at 11:27 PM, Murphy McCauley < jam...@nau.edu > wrote: What distro are you using, and which version of twisted do you have installed? I have python-twisted-core 10.0.0-2ubuntu2, which I believe is the latest in Ubuntu 10.04. This function is defined in it (in the file /usr/lib/python2.6/dist-packages/twisted/internet/base.py). -- Murphy On Nov 15, 2010, at 9:40 AM, Ramana Reddy wrote: > Hi Everyone, > I got the following error after running the following command: > ./nox_core -i ptcp:6633 switch switch_management hostip hosttracker > monitoring jsonmessenger > > NOX 0.9.0(zaku)~full~beta (nox_core), compiled Nov 15 2010 21:36:36 > Compiled with OpenFlow 0x01 > 00001|nox|ERR:Cannot change the state of 'python' to INSTALLED: > 'python' ran into an error: > Unable to construct a Python component: > Traceback (most recent call last): > File "./nox/coreapps/pyrt/pyoxidereactor.py", line 364, in instance > return pyoxidereactor(ctxt) > File "./nox/coreapps/pyrt/pyoxidereactor.py", line 133, in __init__ > signal.signal(signal.SIGCHLD, self._handleSigchld) > AttributeError: 'pyoxidereactor' object has no attribute '_handleSigchld' > > Thanks, > Ramana > _______________________________________________ > nox-dev mailing list > nox-dev@noxrepo.org > http://noxrepo.org/mailman/listinfo/nox-dev_noxrepo.org _______________________________________________ nox-dev mailing list nox-dev@noxrepo.org http://noxrepo.org/mailman/listinfo/nox-dev_noxrepo.org
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