Jenkins failed to restart after updating through war on Ubuntu

Question

I am trying to update jenkins from 2.60.1 to 2.67 through war. For that purpose I have downloaded war for required version from this link, I also referred this post on stack overflow to follow the procedure.But when I try to restart the jenkins after completing process, it is failing to restart. Can anyone please help me with this?

Thanks in advance.

where can I check detailed exception, console is just showing me - * Restarting Jenkins Continuous Integration Server jenkins [failed] — vsbehere, Jun 30 '17 at 05:49
default logs should be made available in /var/log/jenkins/jenkins.log — Ori Marko, Jun 30 '17 at 06:01
Jenkins now requires Java 8. Is that installed (and the default JRE)? — StephenKing, Jun 30 '17 at 06:01

score 0 · Accepted Answer · answered Jun 30 '17 at 06:01

Problem solved, the issue was with permissions of war file I copied into jenkins war directory. I have given basic permissions i.e.

rw-r--r-- 1 root root 71617234 Jun 30 11:24 jenkins.war

and then tried to restart jenkins , it worked appropriately. Previously somehow these permissions were not there for the war file.

Jenkins failed to restart after updating through war on Ubuntu

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