krenew command not working : Permission Denied

Posted by prathmesh.kallurkar on Server Fault See other posts from Server Fault or by prathmesh.kallurkar
Published on 2013-08-26T09:05:19Z Indexed on 2013/11/02 21:59 UTC
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I am using a Linux server to perform my simulations. The login and the file-system of the server are protected using kerberos. The file-system is supported using NFS.

Since my simulations take a lot of time to run, my ssh sessions used to hang regularly. So, I have started running my simulations in byobu (similar to screen).

In order to make sure that my kerberos session remains active, I am using the krenew command.

I have entered the following command in my .bash_profile file. (I am sure that it is called for every login)

killall -9 krenew 2> /dev/null
krenew -b -t -K 10

So everytime I ssh to the server, I kill the existing krenew command. Then, I spawn a new krenew command -b (which runs in background), -t (I forgot why I was using this option !), and -K 10 (It must run after every 10 minutes and refresh the kerberos cache).

When I run the simulations, It runs for 14 hours and then suddenly, I am getting error for reading file Permission Denied

Is the command that I am running incorrect ??

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