[EP-tech] Apache and PerlSwitches

David R Newman drn at ecs.soton.ac.uk
Wed May 13 09:15:14 BST 2020


Hi Matt,


This is a bit of a mystery.  Did you run generate_apacheconf to generate 
new Apache configuration files like the one that has the syntax error 
you reported or did you just copy this from the older server.  If the 
latter, run the following command (as the eprints user) to make sure you 
have Apache configuration appropriate for your current environment:


/opt/eprints3/bin/generate_apacheconf --system --replace


It may be that something other than this line is causing the issue but 
due to a syntax issue it is reporting this line as a problem rather than 
the one that is actually at fault.


Regards


David Newman


On 13/05/2020 08:51, Matthew Brady wrote:
> Hi David,
>
> Always something new to learn... Its in the list, last entry...
>
> $ httpd -M
> Loaded Modules:
>  core_module (static)
>  so_module (static)
>  http_module (static)
> ...
> ...
> perl_module (shared)
>
>
> ------------------------------------------------------------------------
> *From:* eprints-tech-bounces at ecs.soton.ac.uk 
> <eprints-tech-bounces at ecs.soton.ac.uk> on behalf of David R Newman via 
> Eprints-tech <eprints-tech at ecs.soton.ac.uk>
> *Sent:* Wednesday, May 13, 2020 5:45 PM
> *To:* eprints-tech at ecs.soton.ac.uk <eprints-tech at ecs.soton.ac.uk>; 
> Matthew Brady <Matthew.Brady at usq.edu.au>
> *Subject:* Re: [EP-tech] Apache and PerlSwitches
>
> Hi Matt,
>
>
> It is possible the module is installed but not loaded.  You can check 
> by running one of the following commands:
>
>
> RedHat/CentOS/Fedora: httpd -M
>
> Debian/Ubuntu: source /etc/apache2/envvars && apache2 -M
>
>
> You should see perl_module in the list returned.  My general 
> experience is that Mod Perl is enabled automatically on RedHat-based 
> Linux OS but often you need to run "a2enmod perl" on Debian based 
> systems.  On RedHat based systems there should be the file 
> /etc/httpd/conf.modules.d/02-perl.conf that loads Mod Perl.  On 
> Debian-based systems there should be a symlinked file in 
> /etc/apache2/mods-enabled/ called perl.load that symlinks to 
> /etc/apache2/mods-available/perl.load.
>
>
> Regards
>
>
> David Newman
>
>
> On 13/05/2020 08:29, Matthew Brady via Eprints-tech wrote:
>> Hi Yuri,
>>
>> Yes, seems to be
>>
>> $ yum list installed | grep mod_perl
>>
>> mod_perl.x86_64                      2.0.11-1.el7     @epel
>> ------------------------------------------------------------------------
>> *From:* eprints-tech-bounces at ecs.soton.ac.uk 
>> <mailto:eprints-tech-bounces at ecs.soton.ac.uk> 
>> <eprints-tech-bounces at ecs.soton.ac.uk> 
>> <mailto:eprints-tech-bounces at ecs.soton.ac.uk> on behalf of Yuri via 
>> Eprints-tech <eprints-tech at ecs.soton.ac.uk> 
>> <mailto:eprints-tech at ecs.soton.ac.uk>
>> *Sent:* Wednesday, May 13, 2020 4:38 PM
>> *To:* eprints-tech at ecs.soton.ac.uk 
>> <mailto:eprints-tech at ecs.soton.ac.uk> <eprints-tech at ecs.soton.ac.uk> 
>> <mailto:eprints-tech at ecs.soton.ac.uk>
>> *Subject:* Re: [EP-tech] Apache and PerlSwitches
>> is mod_perl installed?
>>
>>
>> Il 13/05/20 04:17, Matthew Brady via Eprints-tech ha scritto:
>> > Hi All,
>> >
>> > We are in the process of running up new servers to migrate across to,
>> > and I am getting a problem when starting Apache.
>> >
>> > Syntax error on line 17 of /opt/eprints3/cfg/apache.conf:
>> >
>> > Line 17 contains:
>> >
>> >     PerlSwitches -I/opt/eprints3/perl_lib
>> >
>> >
>> > I can run epadmin with various options, which seems to indicate its
>> > loading the EPrints::SystemSettings into $conf and can connect to
>> > database etc...
>> >
>> >     $ ./epadmin --verbose test repoep3
>> >
>> >     Starting EPrints Repository.
>> >     Connecting to DB ... done.
>> >     PID: 10718
>> >     Everything seems OK.
>> >
>> >
>> >     $ ./epadmin update_dry_run repoep3
>> >     Dry run: Fixed saved_search__rindex.field collation
>> >     Dry run: Fixed document__rindex.field collation
>> >     Dry run: Fixed author__rindex.field collation
>> >     Dry run: Fixed user__rindex.field collation
>> >     Dry run: Fixed eprint__rindex.field collation
>> >     Dry run: Fixed request__rindex.field collation
>> >     Dry run: Fixed subject__rindex.field collation
>> >     Dry run: 0 datasets added
>> >     Dry run: 0 fields added
>> >     Dry run: 0 counters were added
>> >
>> >
>> > As this is a completely new system, there are lots of variables at 
>> play...
>> > Upgraded OS, Upgraded Apache  2.2 to 2.4
>> > I have installed the same Perl modules on this system as the existing
>> > systems, but I am at a loss where to start to investigate the cause...
>> >
>> > If anyone has any thoughts on where to start troubleshooting this, I'm
>> > all ears.
>> >
>> >
>> > Cheers
>> >
>> > Matt.
>> >
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> liability for any losses arising from its receipt.
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> of education with the Australian Government.
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