I'm quite new to Linux but have to get through it for an assignment. I have to send jobs to a Hadoop cluster. I'm sending these jobs inside a Docker container. To access the cluster i have to use the following command: kinit <username>@CUA.SURFSARA.NL . Now of course I've substituted for my actual username. This command works fine inside the Docker container. But to access a resource manager I have to start Firefox from a Kerberos authenticated terminal, this is where I'm running into trouble.
The same command in a fresh terminal results in the following: kinit: Cannot contact any KDC for realm 'CUA.SURFSARA.NL' while getting initial credentials
Currently I'm suspecting this is caused by missing Kerberos packages. The command that was giving in the instructions to get these is this: sudo dnf install krb5-workstation krb5-libs krb5-auth-dialog However, dnf doesn't work (Ubuntu instead of Fedora?) so I tried apt-get. But doing that it is unable to locate the krb5-workstation and krb5-libs packages.
How can I get these missing packages? And will this solve the contacting KDC problem?
42 Answers
Please make sure your /etc/hosts file is same as before when you installed KDC. Once I installed kdc in my lxc but after a day I couldn't start kdc for this type of error that you have got. And make sure that your Kerberos server and client are pingable(ping IP) to each other.
This is super old, but I wanted to say that you'll likely need to stop and start the service once you've edited your /etc/hosts file. At least that was the fix for me.
systemctl stop krb5kdc.service systemctl start krb5kdc.service Then do "kinit" again or "kinit -k", then klist. You should now see a ticket.
