perfSONAR User Q&A and Other Discussion

[Rade Martinović <>]

Hi Eugene,

I am the developer of the perfSONAR UI. 

First, I am sorry for not responding to you sooner. Although I am on the vacation I could have reacted much sooner. Ivan contacted me directly but I didn't have the time to take a serious look at the problem you have reported until now. 

About the problem, I have tested the RPM with Centos 6 VMs. Although I did not test it thoroughly with ps toolkit installed. There may be some inter-dependencies that caused Derby driver not ending up in the proper directory.

I want to give you kudos for solving the problem yourself. I would appreciate if you could share with me the version of Centos, Tomcat, ps toolkit and psUI you have used so I could recreate this problem on my testing VMs and solve it.

If you are have suggestions, comments or bug reports on psUI, please share those with me, or here at perfsonar-user, I am always interested in feedback from users. 

Best regards,

-- Rade

Sent from Outlook

_____________________________
From:
Sent: Monday, August 10, 2015 20:59
Subject: [perfsonar-user] RE: Perfsonar UI errors - new install
To: <>, <>

Ivan,

 

I was able to fix this issue by copying the Derby JAR into the tomcat6 LIB directory.

All this is somewhat strange because I expected that all libs in the app subtree will be accessible by design.

 

--- Eugene

 

 

From: Garnizov, Ivan (RRZE) []
Sent: Sunday, August 09, 2015 6:52 AM
To: Nesterenko, Eugene;
Subject: RE: Perfsonar UI errors - new install

 

Hi Eugene,

 

Please note that perfSONAR UI service is a separate central UI implementation and has no dependency on the perfSONAR toolkit.

Please share the info about the version of Tomact you are using and the memory size. Did you follow these instructions on the deployment http://docs.perfsonar.net/install_psui.html ?

 

Please note your inquiry has been forwarded to the responsible developer.

 

Best regards,

Ivan

 

 

 

From: [] On Behalf Of
Sent: Donnerstag, 6. August 2015 21:34
To:
Subject: [perfsonar-user] Perfsonar UI errors - new install

 

Greetings,

 

I just deployed the perfSONAR UI server on the CentOS VM (this VM has actually the full toolkit installed) and I’m unable to make the UI work.

In the tomcat6 logs I see the following errors:

 

Aug 05, 2015 3:22:34 PM org.apache.catalina.core.StandardContext listenerStart

SEVERE: Exception sending context initialized event to listener instance of class org.perfsonar.ui.listener.PerfsonarInitListener

<openjpa-2.4.0-r422266:1674604 nonfatal general error> org.apache.openjpa.persistence.PersistenceException: There were errors initializing your configuration: <openjpa-2.4.0-r422266:1674604 fatal user error> org.apache.openjpa.util.UserException: A connection could not be obtained for driver class "org.apache.derby.jdbc.EmbeddedDriver" and URL "jdbc:derby:/var/lib/perfsonar-ui/database;create=true".  You may have specified an invalid URL.

        at org.apache.openjpa.jdbc.schema.DataSourceFactory.newConnectException(DataSourceFactory.java:254)

        at org.apache.openjpa.jdbc.schema.DataSourceFactory.installDBDictionary(DataSourceFactory.java:240)

        at org.apache.openjpa.jdbc.conf.JDBCConfigurationImpl.getConnectionFactory(JDBCConfigurationImpl.java:733)

 

Looks that this is the error assiciated with the Derby Java classes.

I see that there’s a Derby class in the application directory:

 

/usr/share/perfsonar-ui-web/perfsonar-ui/WEB-INF/lib/derby-10.11.1.1.jar

 

I’m not very well with the tomcat/java, sorry so absolutely out of ideas what to do next…

 

Any help will be VERY appreciated!

 

 

-- Eugene