On Friday, February 9, 2018 at 3:01:23 PM UTC-5, Niles Oien wrote:
>
>
> Hi all,
>
> I have a puzzling error.
>
> I am running on CentOS Linux release 7.4.1708. I installed
> trac-1.0.13-1.el7.noarch through yum. I'm trying to get an initial trac
> setup going. In my httpd.conf I have :
>
> WSGIScriptAlias /trac /var/www/trac/trac.wsgi
>
> <Directory /var/www/trac>
> WSGIApplicationGroup %{GLOBAL}
> # For Apache 2.2
> # <IfModule !mod_authz_core.c>
> # Order deny,allow
> # Allow from all
> # </IfModule>
> # For Apache 2.4
> <IfModule mod_authz_core.c>
> Require all granted
> </IfModule>
> </Directory>
>
> I did an initenv and deploy with trac-admin.
>
> If I pull up the trac web page, it comes up in a browser, but I get this
> message :
>
> Error with navigation contributor "BrowserModule"
> Can't synchronize with repository "(default)" (The user <tt>apache</tt>
> requires read _and_ write permissions to the database file
> /var/www/trac/db/trac.db and the directory it is located in.). Look in the
> Trac log for more information.
> The user apache requires read _and_ write permissions to the database
> file /var/www/trac/db/trac.db and the directory it is located in.
>
> And if I turn logging on so I can look at the log, I get this in the
> browser :
> TracError: IOError: [Errno 13] Permission denied:
> u'/var/www/trac/log/trac.log'
>
> So, basically, both errors would sem to be traceable to nothing under
> /var/www/trac/ being 'apache' read-writeable.
>
> But I've done this :
> chown -R apache:apache /var/www/trac
>
> I can su -m apache and create and delete files under /var/www/trac as
> apache. I can run sqlite3 like so : sqlite3 db/trac.db --- and then I can
> do updates on tables in the database, and reverse them. I've tried this
> simple WSGI script to test the apache/mod_wsgi/python setup :
>
> def application(environ, start_response):
> start_response('200 OK',[('Content-type','text/html')])
> return ['<html><body>Hello World!</body></html>']
>
> And it seems to work (I get "Hello world" in the browser).
>
> I don't see anything in the apache error logs, and nothing unremarkable in
> the access logs. The apache setup is utterly vanilla, nothing at all non
> standard, it certainly seems to be running as user apache.
>
> Please help, it's quite baffling - all the error messages I'm getting
> suggest that it's a permissions issue for user apache under /var/www/trac/
> and I am absolutely not seeing that.
>
> Thanks,
>
> Niles Oien National SOlar Observatory Boulder CO
>
That does seem strange. Can you confirm that user apache has r/w
permissions for /var/www as well?
You could try running tracd with strace as the apache user. I haven't used
strace much so unsure if that will show much that's useful.
- Ryan
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