Kirk Strauser wrote:
On Friday 09 September 2005 15:37, J Cameron Cooper wrote:
Anything in $SOFTWARE_HOME/lib/python/Products is available in any
instances that use that SOFTWARE_HOME. You can see this quite easily by
looking at the /Control_Panel/Products of an instance with nothing in
its $INSTANCE_HOME/Products.
I'm not sure what you mean by $ZOPE/Products.
OH! I see what you mean. $ZOPE is defined in $INSTANCE/etc/zope.conf. In
my case, it's set to /usr/local/www/Zope, and there's a Products directory
inside it. FreeBSD installs new products to that directory. I hadn't
noticed that there was also a /usr/local/www/Zope/lib/python/Products
directory with different contents.
Problem solved, although I'm not sure why /usr/local/www/Zope/Products
exists in the first place; maybe it was meant to be a symlink
to ./lib/python/Products? Anyway, I think I can figure it out from here.
Thanks!
In the beginning, there was only one Products directory; this was in
lib/python/ along with the rest of the software defining Zope. If you
wanted to have, say, two or more running distinct instances of Zope you
would have to copy the whole thing. Plus, with third-party products
co-mingling with default products, upgrading became difficult.
Thus was created the instance/software distinction. Everything needed to
run Zope goes into the SOFTWARE_HOME; everything that defines a specific
distinct instance goes into INSTANCE_HOME (3rd party Products, Data.fs,
config files, logs, etc). You can thus manage (move, upgrade, etc)
instances and software separately, and don't have to copy the whole
thing to run many instances. (On my dev box, I may have 4-5 running at
one time, and maybe 20 total!)
This should explain why there are two such directories, and how they
should be used. Short version: do not touch the SOFTWARE_HOME after it
has been installed. In fact, it might be a good idea to remove all write
permissions from that directory. You can co-mingle, of course, but be
aware of what advantages you are losing.
--jcc
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