perfSONAR User Q&A and Other Discussion

[Michael Johnson <>]

Hi Trond,

Can you try 'systemctl status cassandra' and see what it says?

Then 'systemctl start cassandra' if it's not running, or 'systemctl restart 
cassandra' if it is.

Thanks,
Michael

On Wed, Oct 04, 2017 at 06:36:56PM +0200, Trond Endrestøl wrote:
> On Wed, 4 Oct 2017 12:06-0400, Michael Johnson wrote:
>
> > Hi Trond,
> >
> > To add onto Mark's comments, a couple of possibilities:
> >
> > - check that selinux is disabled
> > - See if esmond is running or if there are errors in
> > /var/log/esmond/esmond.log or /var/log/esmond/django.log (usually when the
> > test listing won't load, it's an issue with Esmond).
>
> /var/log/esmond/esmond.log are saying more or less the same as httpd 
> and pscheduler:
>
> 2017-10-04 17:47:55,309 [ERROR] 
> /usr/lib/esmond/esmond/api/perfsonar/api_v2.py: Unable to connect to 
> cassandra. Please verify cassandra is running.
>
> Here are some lines from /var/log/esmond/django.log:
>
> ConnectionException: 'Unable to connect to cassandra. Please verify cassandra 
> is running.'
> 2017-10-04 17:47:55,307 [ERROR] 
> /usr/lib/esmond/lib/python2.7/site-packages/django/core/handlers/base.py: 
> Internal Server Error: /esmond/perfsonar/archive/
> Traceback (most recent call last):
> File 
> "/usr/lib/esmond/lib/python2.7/site-packages/django/core/handlers/base.py", 
> line 119, in get_response
>   resolver_match = resolver.resolve(request.path_info)
> File 
> "/usr/lib/esmond/lib/python2.7/site-packages/django/core/urlresolvers.py", 
> line 365, in resolve
>   for pattern in self.url_patterns:
> File 
> "/usr/lib/esmond/lib/python2.7/site-packages/django/core/urlresolvers.py", 
> line 401, in url_patterns
>   patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
> File 
> "/usr/lib/esmond/lib/python2.7/site-packages/django/core/urlresolvers.py", 
> line 395, in urlconf_module
>   self._urlconf_module = import_module(self.urlconf_name)
> File "/usr/lib64/python2.7/importlib/__init__.py", line 37, in import_module
>   __import__(name)
> File "/usr/lib/esmond/esmond/urls.py", line 27, in <module>
>   from esmond.api.perfsonar.api_v2 import (
> File "/usr/lib/esmond/esmond/api/perfsonar/api_v2.py", line 65, in <module>
>   raise ConnectionException(error_msg)
> ConnectionException: 'Unable to connect to cassandra. Please verify cassandra 
> is running.'
>
> --
> Trond.

--
Michael Johnson
GlobalNOC Software Engineering
Indiana University

812-856-2771

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