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Directories

Some important directories you'll see people talking about:

SOFTWARE_HOME - the root of your zope software installation.
INSTANCE_HOME - this may be the same as SOFTWARE_HOME, but often a separate directory where you can keep data and products independent of zope software upgrades (recommended). If you use ZEO you might have several of these.
STORAGE_HOME - if you use ZEO: home of the ZEO storage server's ZODB, log and configuration files.
Products - the directory where add-on ZopeProducts are installed. There may be two - one under SOFTWARE_HOME, one under INSTANCE_HOME (use this one).

zope.conf in INSTANCE_HOME/etc/ is the main configuration file for a Zope instance
[zeo.conf]? in STORAGE_HOME/etc/ is the configuration file for a ZEO storage server

You can find useful information about a Zope server in a number of places:

In the ZMI:

On the filesystem

apache's access.log, if you are using ZopeAndApache. On debian this is in /var/log/apache/.
Z2.log in INSTANCE_HOME/log/
event.log in INSTANCE_HOME/log/
[trace.log]? in INSTANCE_HOME/log/, if enabled. See also ForensicLogger.
zeo.log in STORAGE_HOME/log/, if you are running ZEO
you can get a log of memory usage if you run the CheckZopeMem script
you can see your zope processes by running pstree -ap |grep python |grep -v grep (unix)
you can check your zope processes' size by running 'top" and pressing M (sort by memory usage). Often zope processes will be near the top.
you can check if your zope processes are busy doing something by running top and checking the cpu usage.

Some examples can be seen here

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