For some time, Zope has used a daemon-management tool we wrote called zdaemon:
http://www.python.org/pypi/zdaemon Until late last year, I found this tool a bit difficult to use because it was essentially undocumented. I was forced to learn enough to mostly document it and have gained a new appreciation of it. (I haven't documented its interactive shell mode, which I don't use. Maybe someone will document it or maybe I'll just rip it out.) I considered making some enhancements to it and decided to ask if some folks knew about alternative tools we might use instead. See the discussion at: http://mail.zope.org/pipermail/zope3-dev/2006-December/021353.html Ironically, this sort of tool isn't Python specific at all, and the discussion highlighted some non-Python tools, notably daeomontools and runit, neither of which seemed as appealing as zdaemon for various reasons. This discussion also noted a Python-based tool named suoervisor2: http://www.plope.com/software/supervisor2/ Which seems to be derived from zdaemon and has some interesting features. I think that both zdaemon and supervisor3 do a better job of process management than daemontools or runit. At the recent open-space discussion, another Python-based tool was mentioned whos name I don't remember. I ended up deciding to use zdaemon for our projects because it met our needs very well. I added a couple of enhancements: - The ability to set environment variables. This is really important to us as it allows us to set LD_LIBRARY_PATH. This wants to be done in a supervisor process. A Python program can't set LD_LIBRARY_PATH for itself because it is too late for it to be used by the library loaded. - I finished the transcript log, making it rotatable. The zdaemon transcript log consumes the standard error and output of the program zdaemon manages, providing basic logging for applications that have lacking or lame logging support. (zdaemon has allowed us to make the spread daemon far more manageable.) Anyway, I share this for your consideration. There are probably better tools out there than zdaemon and supervisor2, but I'm not aware of them. :) I'm curious what other people have found or use. Jim -- Jim Fulton mailto:[EMAIL PROTECTED] Python Powered! CTO (540) 361-1714 http://www.python.org Zope Corporation http://www.zope.com http://www.zope.org _______________________________________________ Web-SIG mailing list Web-SIG@python.org Web SIG: http://www.python.org/sigs/web-sig Unsubscribe: http://mail.python.org/mailman/options/web-sig/archive%40mail-archive.com
