OpsCenter Login page not coming up

Thanks for sharing your idea. 

It was not a certificate issue since we could  not even get to the point where the page would mention that there is a problem with the certificate.

We looked at /var/log/messages:pr 27 15:23:40 evpla504 abrtd: Directory 'ccpp-2017-04-27-15:23:25-6227' creation detected
Apr 27 15:23:40 evpla504 abrtd: Package 'VRTSOpsCenterServer' isn't signed with proper key
Apr 27 15:23:40 evpla504 abrtd: 'post-create' on '/var/spool/abrt/ccpp-2017-04-27-15:23:25-6227' exited with 1
Apr 27 15:23:40 evpla504 abrtd: Deleting problem directory '/var/spool/abrt/ccpp-2017-04-27-15:23:25-6227'
Apr 27 19:36:40 evpla504 abrtd: Got signal 15, exiting
Apr 27 19:38:22 evpla504 abrtd: Init complete, entering main loop
Apr 27 20:12:39 evpla504 abrt[5471]: Write error: No space left on device
Apr 27 20:12:39 evpla504 abrt[5471]: Error writing '/var/spool/abrt/ccpp-2017-04-27-20:12:27-3411.new/coredump'
Apr 27 20:38:46 evpla504 abrt[7351]: Write error: No space left on device
Apr 27 20:38:47 evpla504 abrt[7351]: Error writing '/var/spool/abrt/ccpp-2017-04-27-20:38:34-5688.new/coredump'
within the last coredump, the process that killed it was: /prd/nbu/OpsCenter/SYMCOpsCenterServer/jre/bin/java

Found this article:

https://www.veritas.com/support/en_US/article.000035896

GENERAL ERROR: Job data collection from NetBackup module errors out - java.lang.OutOfMemoryError: Java heap space

We also noticed that the server is maxing the CPU resource. 

We doubled the Java heap size and restarted OpsCenter. This resolved the issue.

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