Bug#798610: ciderwebmail: Error message "Please come back later" shown when running via uWSGI

[James Valleroy]

On 09/11/2015 04:30 AM, Jonas Smedegaard wrote:
> Hi James,
> 
> Quoting James Valleroy (2015-09-11 01:22:21)
>> I attempted to integrate ciderwebmail with Apache2 via uWSGI, based on 
>> the instructions given in README.Debian. But when I access 
>> http://localhost/cider, I just get a page that says "(en) Please come 
>> back later" (along with several other translations of that error 
>> message). I don't see any error messages in the uwsgi logs.
> 
> From your description it sounds like CiderWebmail instance may be served 
> perfectly fine, but the Apache2 proxy is misconfigured to redirect to it 
> somehow.

The page showing the error doesn't look like a usual Apache error page.
I attached a screenshot.

>> This was tested on a fresh installation using the latest Debian stretch
>> installer, then dist-upgraded to sid. Here's a list of the steps I took:
>> # apt install apache2 uwsgi uwsgi-plugin-psgi
>> # apt install libapache2-mod-uwsgi
>> # ln -s -t /etc/uwsgi/apps-enabled ../apps-available/ciderwebmail.ini
>> # ln -s -t /etc/apache2/conf-enabled /etc/ciderwebmail/apache-uwsgi.conf
>> # service uwsgi restart ciderwebmail
>> # service apache2 restart
> 
> How did you configure apache apart from that?  In particular, which 
> uWSGI driver did you install and how was it configured in apache? 
> (there's arguably a documentation flaw of not covering that aspect of 
> setting up CiderWebmail...)

There was no additional configuration other than what's shown above. I
just installed libapache2-mod-uwsgi, and it enabled itself after install.

I've attached a listing/printout of my configuration (apache-configs.txt).

> 
>> I've attached the log file (/var/log/uwsgi/app/ciderwebmail.log).
> 
> Please provide apache logs too - and if you dd _any_ customization of 
> 
> Please also provide relevant parts of your apache2 config (e.g. vhost 
> setup, if any).

I've attached the apache logs.

Thanks for the quick response!

--
James
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jvalleroy at debian:/etc/apache2$ ls sites-enabled/
000-default.conf
jvalleroy at debian:/etc/apache2$ cat sites-enabled/000-default.conf 
<VirtualHost *:80>
	# The ServerName directive sets the request scheme, hostname and port that
	# the server uses to identify itself. This is used when creating
	# redirection URLs. In the context of virtual hosts, the ServerName
	# specifies what hostname must appear in the request's Host: header to
	# match this virtual host. For the default virtual host (this file) this
	# value is not decisive as it is used as a last resort host regardless.
	# However, you must set it for any further virtual host explicitly.
	#ServerName www.example.com

	ServerAdmin webmaster at localhost
	DocumentRoot /var/www/html

	# Available loglevels: trace8, ..., trace1, debug, info, notice, warn,
	# error, crit, alert, emerg.
	# It is also possible to configure the loglevel for particular
	# modules, e.g.
	#LogLevel info ssl:warn

	ErrorLog ${APACHE_LOG_DIR}/error.log
	CustomLog ${APACHE_LOG_DIR}/access.log combined

	# For most configuration files from conf-available/, which are
	# enabled or disabled at a global level, it is possible to
	# include a line for only one particular virtual host. For example the
	# following line enables the CGI configuration for this host only
	# after it has been globally disabled with "a2disconf".
	#Include conf-available/serve-cgi-bin.conf
</VirtualHost>

# vim: syntax=apache ts=4 sw=4 sts=4 sr noet
jvalleroy at debian:/etc/apache2$ ls mods-enabled/
access_compat.load  authz_host.load  dir.load        negotiation.conf
alias.conf          authz_user.load  env.load        negotiation.load
alias.load          autoindex.conf   filter.load     setenvif.conf
auth_basic.load     autoindex.load   mime.conf       setenvif.load
authn_core.load     deflate.conf     mime.load       status.conf
authn_file.load     deflate.load     mpm_event.conf  status.load
authz_core.load     dir.conf         mpm_event.load  uwsgi.load
jvalleroy at debian:/etc/apache2$ ls conf-enabled/
apache2-uwsgi.conf  localized-error-pages.conf    security.conf
charset.conf        other-vhosts-access-log.conf  serve-cgi-bin.conf
jvalleroy at debian:/etc/apache2$ cat conf-enabled/apache2-uwsgi.conf 
<Location /cider>
	SetHandler uwsgi-handler
	uWSGISocket /run/uwsgi/app/ciderwebmail/socket
</Location>
jvalleroy at debian:/etc/apache2$ 
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