[LON-CAPA-admin] Missing server-status page

[Stuart Raeburn]

Hi Maged,

> However, after an apache reload or restart, I still get    
> server-status which says Forbidden.

You should check that mod-status is enabled.
sudo apache2ctl -M | sort
will show which Apache modules are loaded.

If mod_status is not listed as a loaded module, do:
sudo a2enmod status

If there are no other configuration files controlling access to
/server-status, then this directive in loncapa_apache.conf should be
the one which applies:

<Location /server-status>
PerlAccessHandler Apache::lonstatusacc
SetHandler server-status
</Location>

The access handler lonstatusacc.pm will return FORBIDDEN unless you
satisfy one of the conditions set for this particular page in your
domain configuration.  A Domain Coordinator can use the web GUI:

Main Menu > Set domain configuration > Display ("Access to server
status pages" checked)

and for the row: "Apache Status Page" either enter your  
username:domain in the "Other named users" box or enter your  
computer's static IP address in the "Specific IPs" column, then click  
"Save Changes".

If access has not been configured for specific users or IP addresses,  
then a user who has a domain coordinator role will, by default, be  
able to access /server-status when logged into LON-CAPA, with that  
role selected.

You should also be able to retrieve /server-status from the command  
line on the server itself:

wget http://localhost/server-status

or

wget --no-check-certificate https://localhost/server-status

(if running Apache/SSL)

You should see: "Connecting to localhost|127.0.0.1|:80... connected"  
or "Connecting to localhost|127.0.0.1|:443... connected", when you do  
this, assuming you have an entry for localhost pointing at 127.0.0.1  
in /etc/hosts

> And I still cannot find a file or folder under /home/httpd/html with  
>   this name.

No, you won't find it there.

The server-status page is generated by the mod_status Apache module,  
and an Apache config entry: "SetHandler server-status" is needed to  
link the URL: /server-status with that shared module.


Stuart Raeburn
LON-CAPA Academic Consortium

Quoting "Abdel Messeh, Maged" <mmesseh at illinois.edu>:

> Hi Stuart,
>
> I did your second solution on our library test server and commented   
>  out the /server-status block from server-status.conf
>
> However, after an apache reload or restart, I still get    
> server-status which says Forbidden.
>
> And I still cannot find a file or folder under /home/httpd/html with  
>   this name.
>
> Thanks so much for your help,
>
> Maged
>
>
> -----Original Message-----
> From: lon-capa-admin-bounces at mail.lon-capa.org    
> [mailto:lon-capa-admin-bounces at mail.lon-capa.org] On Behalf Of    
> Stuart Raeburn
> Sent: Friday, July 10, 2015 5:37 PM
> To: lon-capa-admin at mail.lon-capa.org
> Subject: Re: [LON-CAPA-admin] Missing server-status page
>
> Hi Maged,
>
>> I came across an issue when I try to check "Apache Status Page" on
>> the " Server Utilities for Domain".
>>
>> I have UB 12 system.
>
> Thanks for reporting this.
>
> In Ubuntu 10, 12 and 14, you can either
>
> (a) remove the symlink: /etc/apache2/mods-enabled/status.conf, which
> points at ../mods-available/status.conf
>
> or
>
> (b) leave the symlink in place and comment out the following item in
> /etc/apache2/mods-available/status.conf
>
> <Location /server-status>
>      SetHandler server-status
>      Order deny,allow
>      Deny from all
>      Allow from 127.0.0.1 ::1
>      Allow from 192.0.2.0/24
> </Location>
>
> and then reload Apache using:
> sudo service apache2 reload
>
>
> Notes:
>
> 1. LON-CAPA's own Apache configuration file:
> /etc/apache2/loncapa_apache.conf
>
> includes its own entry for /server-status
>
> <Location /server-status>
> PerlAccessHandler Apache::lonstatusacc
> SetHandler server-status
> </Location>
>
> which was apparently being overridden by the entry in Ubuntu's
> standard status.conf file.
>
> 2. For the future I will update the install.pl script included in
>
> http://install.loncapa.org/versions/linux/install.tar
>
> used to prepare a Linux server/VM for LON-CAPA installation, so that
> in the case of Ubuntu it will replace the distro's standard
> /etc/apache2/mods-available/status.conf file with a modified version,
> in which the <Location /server-status></Location> block is commented
> out.
>
>
> Stuart Raeburn
> LON-CAPA Academic Consortium
>
>
> Quoting "Abdel Messeh, Maged" <mmesseh at illinois.edu>:
>
>> Hi All,
>>
>> I came across an issue when I try to check "Apache Status Page" on
>> the " Server Utilities for Domain".  This directs me to the
>> server-status page which is not found.
>>
>> I checked my system and I cannot find a file or folder under
>> /home/httpd/html with this name.
>>
>> I have UB 12 system.
>>
>> Thanks for your help,
>>
>> Maged
>>
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