perfSONAR User Q&A and Other Discussion

[Bryan Hess <>]

Just to close out the conversation: Upgrading to 4.0.2 cleared up the problem 
for me. 

Thanks!

--Bryan



----- Original Message -----
From: "Pete Siemsen" 
<>
To: "Bryan Hess" 
<>
Cc: "perfsonar-user" 
<>
Sent: Monday, November 13, 2017 7:13:55 PM
Subject: Re: [perfsonar-user] tests.cgi page stuck at loading

I have what may be the same problem. For me, it has a simple solution which
I didn't stumble on for a while - just click anywhere on the page. The
"Loading" disappears. Repeatable, odd, but easy to work around in my case.



-- Pete


On Mon, Nov 13, 2017 at 8:53 AM, Bryan Hess 
<>
 wrote:

> Yes, I can reach that page-- loads with no problem. Restarting cassandra
> didn't fix it either, nor did a complete reboot.
>
>
> esmond.log looks happy:
>
> 2017-11-13 10:44:40,092 [INFO] /usr/lib/esmond/esmond/cassandra.py:
> Connected to ['localhost:9160']
> 2017-11-13 10:46:35,336 [INFO] /usr/lib/esmond/esmond/cassandra.py:
> Checking/creating column families
> 2017-11-13 10:46:35,339 [INFO] /usr/lib/esmond/esmond/cassandra.py:
> Schema check done
> 2017-11-13 10:46:35,349 [INFO] /usr/lib/esmond/esmond/cassandra.py:
> Connected to ['localhost:9160']
> 2017-11-13 10:46:48,464 [INFO] /usr/lib/esmond/esmond/cassandra.py:
> Checking/creating column families
> 2017-11-13 10:46:48,467 [INFO] /usr/lib/esmond/esmond/cassandra.py:
> Schema check done
> 2017-11-13 10:46:48,478 [INFO] /usr/lib/esmond/esmond/cassandra.py:
> Connected to ['localhost:9160']
>
> There was a complaint about cassandra in django.log, but it didn't repeat,
> so I think this was just during startup:
>
> 2017-11-13 10:43:08,481 [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.'
>
>
>
> Cassandra seems to be running:
>
> $ ps -ef | grep cassandra
> cassand+  3309     1 18 10:43 ?        00:01:41 java -ea
> -javaagent:/usr/share/cassandra/lib/jamm-0.2.5.jar
> -XX:+CMSClassUnloadingEnabled -XX:+UseThreadPriorities
> -XX:ThreadPriorityPolicy=42 -Xms1955M -Xmx1955M -Xmn488M 
> -XX:+HeapDumpOnOutOfMemoryError
> -Xss256k -XX:StringTableSize=1000003 -XX:+UseParNewGC
> -XX:+UseConcMarkSweepGC -XX:+CMSParallelRemarkEnabled -XX:SurvivorRatio=8
> -XX:MaxTenuringThreshold=1 -XX:CMSInitiatingOccupancyFraction=75 
> -XX:+UseCMSInitiatingOccupancyOnly
> -XX:+UseTLAB -XX:+CMSParallelInitialMarkEnabled
> -XX:+CMSEdenChunksRecordAlways -XX:+UseCondCardMark
> -Djava.net.preferIPv4Stack=true -Dcassandra.jmx.local.port=7199
> -XX:+DisableExplicitGC -Dlog4j.configuration=log4j-server.properties
> -Dlog4j.defaultInitOverride=true 
> -Dcassandra-pidfile=/var/run/cassandra/cassandra.pid
> -cp /etc/cassandra/conf:/usr/share/cassandra/lib/antlr-3.2.
> jar:/usr/share/cassandra/lib/apache-cassandra-2.0.17.jar:/
> usr/share/cassandra/lib/apache-cassandra-clientutil-2.
> 0.17.jar:/usr/share/cassandra/lib/apache-cassandra-thrift-2.
> 0.17.jar:/usr/share/cassandra/lib/commons-cli-1.1.jar:/usr/
> share/cassandra/lib/commons-codec-1.2.jar:/usr/share/
> cassandra/lib/commons-lang3-3.1.jar:/usr/share/cassandra/
> lib/compress-lzf-0.8.4.jar:/usr/share/cassandra/lib/
> concurrentlinkedhashmap-lru-1.3.jar:/usr/share/cassandra/
> lib/disruptor-3.0.1.jar:/usr/share/cassandra/lib/guava-15.
> 0.jar:/usr/share/cassandra/lib/high-scale-lib-1.1.2.jar:/
> usr/share/cassandra/lib/jackson-core-asl-1.9.2.jar:/
> usr/share/cassandra/lib/jackson-mapper-asl-1.9.2.jar:/
> usr/share/cassandra/lib/jamm-0.2.5.jar:/usr/share/
> cassandra/lib/jbcrypt-0.3m.jar:/usr/share/cassandra/lib/
> jline-1.0.jar:/usr/share/cassandra/lib/json-simple-1.1.
> jar:/usr/share/cassandra/lib/libthrift-0.9.1.jar:/usr/
> share/cassandra/lib/log4j-1.2.16.jar:/usr/share/cassandra/
> lib/lz4-1.2.0.jar:/usr/share/cassandra/lib/metrics-core-2.
> 2.0.jar:/usr/share/cassandra/lib/netty-3.6.6.Final.jar:/
> usr/share/cassandra/lib/reporter-config-2.1.0.jar:/
> usr/share/cassandra/lib/servlet-api-2.5-20081211.jar:/
> usr/share/cassandra/lib/slf4j-api-1.7.2.jar:/usr/share/
> cassandra/lib/slf4j-log4j12-1.7.2.jar:/usr/share/cassandra/
> lib/snakeyaml-1.11.jar:/usr/share/cassandra/lib/snappy-
> java-1.0.5.jar:/usr/share/cassandra/lib/snaptree-0.1.
> jar:/usr/share/cassandra/lib/stress.jar:/usr/share/
> cassandra/lib/super-csv-2.1.0.jar:/usr/share/cassandra/lib/thrift-server-0.3.7.jar
> org.apache.cassandra.service.CassandraDaemon
> admin     9236  5002  0 10:52 pts/0    00:00:00 grep --color=auto cassandra
>
>
>
> ----- Original Message -----
> From: "Andrew Lake" 
> <>
> To: "Trond Endrestøl" 
> <>,
>  "Bryan Hess"
> <>
> Cc: "perfsonar-user" 
> <>
> Sent: Monday, November 13, 2017 10:15:21 AM
> Subject: Re: [perfsonar-user] tests.cgi page stuck at loading
>
> Hi,
>
> Can you reach "https://<hostname>/esmond/perfsonar/archive/?limit=1”? You
> may want to try restarting cassandra (systemctl restart cassandra). My
> guess is that its hanging trying to connect to esmond. You can look for
> errors in the logs under /var/log/esmond to verify.
>
> Thanks,
> Andy
>
>
>
> On November 13, 2017 at 10:07:35 AM, Bryan Hess 
> ()
>  wrote:
>
>
> No, IPv4.
>
>
> ----- Original Message -----
> From: "Trond Endrestøl" 
> <>
> To: "perfsonar-user" 
> <>
> Sent: Monday, November 13, 2017 10:02:08 AM
> Subject: Re: [perfsonar-user] tests.cgi page stuck at loading
>
> On Mon, 13 Nov 2017 09:26-0500, Bryan Hess wrote:
>
> > Thanks for any pointers.
>
> Are you accessing the web UI by an IPv6 connection?
>
> --
> Trond.
>