Homan Els wrote:

ZOPE 2.2.2 , Xron -0-0-9, Python 1.5.2

Hi Steve,

I am running Zope under linux (Suse 6.4). And I would like to use Xron. But, I can not get it running. I did read your email : Xron on linux. And therefore I would like to know, how you did manage to use Xron. I have the general Xron problem, that the zope-server is not responding anymore after the installation of Xron.

What user do you run Zope as? There's a problem with Linux where if you start off a thread, then change uid in the main thread, the thread that you spawned before will remain in the old uid, or unexpected things will happen. This is what Zope does when you run it as root. Zope initializes its products as root, and then changes to user "nobody". You can find out more about this if you search for discussions about BIND and Linux. The solution for Zope and Xron is to run Zope as user "nobody". You might need to chown the files in your zope directory. Note that you will not be able to run Zope on a privileged port (below 1024) if you do this. The alternative is to hack Zope so that it calls Xron after it has changed use to "nobody", so Xron can safely spawn its thread as user "nobody". If you do this, you'll be able to run zope as the root user, and Zope + Xron will work running on port 80. -- Steve Alexander Software Engineer Cat-Box limited