perfSONAR User Q&A and Other Discussion

[Matthew Woodward <>]

Hi Mark, et al.
      So I downloaded 4.0 RC2 and installed it. Very smooth.

Regarding SaltStack minion installation, I manually removed the 
Internet2 version of the "python-Jinja2" module (via "rpm -e") in order 
to allow yum to install the SaltStack Minion and CentOS 7's version of 
"python-jinja2".

PerfSonar appears to work with this 2.7 version of python-jinja2 (rather 
than the 2.8 version). I do see your bug report here:

https://github.com/perfsonar/pscheduler/issues/215

Is this fix slated for 4.0 RC3?

Thanks,

- Matt


On 11/2/16 9:52 AM, Mark Feit wrote:
> (Sorry for the late reply; just getting caught up…)
>
> Matthew Woodward writes:
>
> > Perfsonar seems to rely on the "python-Jinja2" version 2.8 package,
> > while SaltStack-Minion requires "python-jinja2" version 2.7 package.
> > (Note that these are named slightly differently. The one has a capital
> > "J" in Jinja, while the other has a lowercase "j" in jinja. Also, the
> > version 2.8 package comes from "a-Internet2-staging" repo, while the
> > other comes from "base/7/x86_64" repo.)
> This is one of those situations where we built the package for CentOS 6 
> because it wasn’t part of that distribution using the latest stable release. 
> Red Hat’s convention 
> (https://fedoraproject.org/wiki/Packaging:Naming#Case_Sensitivity) says that 
> if the author has a case preference, it should be followed.  I did that, but 
> since CentOS 7 wasn’t on my radar at the time, I didn’t check to see if 
> they’d added it.  It turned out they had and did it with an all-lowercase 
> name.  Debian has an all-lowercase convention, so between those two, I’m not 
> going to tilt at that windmill.
>
> > Since 2.8 is already installed, I'm running into a conflict in getting
> > the 2.7 jinja2 dependency installed for the SaltStack Minion.
> >
> > Does Perfsonar require version 2.8? Can I safely downgrade to 2.7?
> I don’t see anything in the release notes between 2.7 and the current version 
> that would cause problems, so a downgrade should be safe.
>
> Jinja2, Werkzeug and Flask all have this problem, so I think in the interest 
> of broadest compatibility, I’m going to change them all to lowercase and hope 
> Red Hat doesn’t start following its own conventions.  :-)
>
> I’ve opened a bug on this and will get it squared away before the final 
> release:    https://github.com/perfsonar/pscheduler/issues/215
>
> --Mark