[LON-CAPA-admin] CentOS/Red Hat/Scientific Linux 6 -- ImageMagick

[Stuart Raeburn]

Hi H.K.,

> Now the randomlabel images do not show up. See
>
> /res/fsu/PhysicsLabs/PHY2048L/Torques/torques.problem

I recommend reloading Apache after updating ImageMagick to  
6.8.9-7.1.centos6.lc on CentOS 6, by using:

/etc/init.d/httpd reload

On a CentOS 6 server (with ImageMagick 6.8.9) I was able to display  
all four randomlabel images in version 11, i.e., the version of  
torques.problem in which the background image is still a .gif,  
(Graphics/meterRuler.gif).

Display was successful for web, and also for printout (where the  
meterRuler.gif was converted to an meterRuler.gif.eps).


Stuart Raeburn
LON-CAPA Academic Consortium


Quoting "H. K. Ng" <hkng at fsu.edu>:

> Thanks Stuart for the fix.
>
> It appears that there may be another problem (not sure if it is related).
> Now the randomlabel images do not show up. See
>
> /res/fsu/PhysicsLabs/PHY2048L/Torques/torques.problem
>
> There are 4 randomlabel images and non of them show up.
>
> Regards,
> -hk
>
>
> On Sat, Jun 27, 2015 at 12:42 PM, Stuart Raeburn <raeburn at msu.edu> wrote:
>
>> Hi H.K.,
>>
>> > When I did a yum update, it was not successful. Seems like there is a
>> > conflict between existing packages that depend on the older version of
>> > ImageMagick.
>>
>> The server/VM for which you attempted to update ImageMagick had
>> inkscape installed, and the inkscape package had been built with a
>> specific version of
>> ImageMagick-c++-devel (6.5.4.7-7), so had a it dependency on the same
>> version of ImageMagick-c++.
>>
>> As LON-CAPA does not require inkscape one solution would be to simply
>> remove it using: yum remove inkscape
>>
>> Alternatively, if you want to retain inkscape, you will need to update
>> inkscape to a version built with ImageMagick-c++-devel-6.8.9.
>>
>> Accordingly, I have added the ImageMagick-c++-devel, ImageMagick-c++,
>> and ImageMagick-devel packages for 6.8.9-7.1.centos6.lc, and also
>> inkscape-0.47-6.1.centos6.lc packages to the LON-CAPA yum repositories
>> for CentOS 6.
>>
>> yum clean all
>> yum update
>>
>> should now be successful, unless you have other packages installed
>> which were also built with ImageMagick-c++-devel.
>>
>> Notes:
>>
>> 1. There was a problem building ImageMagick-devel using the orginal
>> .spec file for ImageMagick, so I fixed it and replaced the ImageMagick
>> 6.8.9-7.centos6.lc packages added yesterday with ImageMagick
>> 6.8.9-7.1.centos6.lc packages built today.
>>
>> 2. The inkscape package is not installed if you set up a LON-CAPA
>> instance using the recommended minimal install of Linux, followed by
>> installation of the LONCAPA-prerequisites rpm.
>>
>> 3. ImageMagick-c++, ImageMagick-c++-devel, ImageMagick-devel, and
>> inkscape-0.47-6.1 packages have also been added to the LON-CAPA yum
>> repositories for Red Hat 6 and Scientific Linux 6.
>>
>>
>> Stuart Raeburn
>> LON-CAPA Academic Consortium
>>
>>
>> Quoting "H. K. Ng" <hkng at fsu.edu>:
>>
>> > Hi Stuart,
>> >
>> > When I did a yum update, it was not successful. Seems like there is a
>> > conflict between existing packages that depend on the older version of
>> > ImageMagick. Part of the message is attached below.
>> >
>> > -hk
>> >
>> > Resolving Dependencies
>> > --> Running transaction check
>> > ---> Package ImageMagick.x86_64 0:6.5.4.7-7.el6_5 will be updated
>> > --> Processing Dependency: libMagickCore.so.2()(64bit) for package:
>> > inkscape-0.47-6.el6.x86_64
>> > ...
>> > ...<removed>
>> >
>> > --> Finished Dependency Resolution
>> > Error: Package: ImageMagick-c++-6.5.4.7-7.el6_5.x86_64 (@updates)
>> >            Requires: libMagickCore.so.2()(64bit)
>> >            Removing: ImageMagick-6.5.4.7-7.el6_5.x86_64 (@updates)
>> >                libMagickCore.so.2()(64bit)
>> >            Updated By: ImageMagick-6.8.9-7.centos6.lc.x86_64
>> > (loncapa-updates-basearch)
>> >                Not found
>> > Error: Package: inkscape-0.47-6.el6.x86_64 (@base/$releasever)
>> >            Requires: libMagickCore.so.2()(64bit)
>> >            Removing: ImageMagick-6.5.4.7-7.el6_5.x86_64 (@updates)
>> >                libMagickCore.so.2()(64bit)
>> >            Updated By: ImageMagick-6.8.9-7.centos6.lc.x86_64
>> > (loncapa-updates-basearch)
>> >                Not found
>> > Error: Package: ImageMagick-c++-6.5.4.7-7.el6_5.x86_64 (@updates)
>> >            Requires: libMagickWand.so.2()(64bit)
>> >            Removing: ImageMagick-6.5.4.7-7.el6_5.x86_64 (@updates)
>> >                libMagickWand.so.2()(64bit)
>> >            Updated By: ImageMagick-6.8.9-7.centos6.lc.x86_64
>> > (loncapa-updates-basearch)
>> >                Not found
>> >  You could try using --skip-broken to work around the problem
>> >  You could try running: rpm -Va --nofiles --nodigest
>> >
>> > On Fri, Jun 26, 2015 at 11:18 AM, Stuart Raeburn <raeburn at msu.edu>
>> wrote:
>> >
>> >> Hi,
>> >>
>> >> Packages for ImageMagick and ImageMagick-perl which contain newer
>> >> versions than those present in the distribution's standard
>> >> repositories have been added to LON-CAPA's own yum repositories for
>> >> CentOS, Red Hat, and Scientific Linux 6 (both 64 bit and 32 bit
>> >> architectures).
>> >>
>> >> When the CHECKRPMS script (run by cron on alternate nights) next runs
>> >> it will advise using yum to update ImageMagick and ImageMagick-perl
>> >> from 6.5.4.7-7.el6 to 6.8.9-7.dist6.lc (where dist = centos, rhel, or
>> >> sl).
>> >>
>> >> The newer packages create valid postscript when generating PDF
>> >> printouts in LON-CAPA for resources containing certain types of jpeg
>> >> images (e.g., see
>> >> http://mail.lon-capa.org/pipermail/lon-capa-users/2015-June/004878.html
>> >> ).
>> >>
>> >> ImageMagick for LON-CAPA servers running other distros: CentOS 5 or 7,
>> >> Ubuntu 12 or 14, or SLES11 do not need updating, as they already
>> >> support printout generation for resources of this type.
>> >>
>> >> In the case of CentOS/Red Hat/Scientific Linux 5, updated ImageMagick
>> >> rpms which were built previously (June 2014 -- rev. 6.8.8.2) to
>> >> address a different issue to do with conversion of 8-bit alpha channel
>> >> png files (see bug 6652 --
>> >> http://bugs.loncapa.org/show_bug.cgi?id=6652#c9) can also support
>> >> conversion of these jpeg images.
>> >>
>> >> At least one other distro -- Ubuntu 10 LTS -- needs a newer version of
>> >> ImageMagick to support printout generation for resources containing
>> >> these types of jpeg images.  However, 10.04 LTS reached end of life on
>> >> April 30, 2015, so any LON-CAPA domains running servers still using it
>> >> should consider upgrading to either Ubuntu 12 LTS or 14 LTS.
>> >>
>> >>
>> >> Stuart Raeburn
>> >> LON-CAPA Academic Consortium
>> >>
>> >> _______________________________________________
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