OCNE: Unable to exec into a container

[hussam-qasem]

Describe the issue

In some cases, I'm unable to exec into a container:

$ kubectl -n NAMESPACE exec -it POD -- bash
ERRO[0000] exec failed: unable to start container process: open /dev/pts/0: operation not permitted
command terminated with exit code 255

Environment (please complete the following information):

• Host OS: Oracle Linux Server release 8.6
• Kernel version (for Linux host): 5.4.17-2136.310.7.1.el8uek.x86_64
• OCNE: 1.5.4-3.el8

Additional information

Sometimes it works, but I cannot find a pattern. Searching the error suggests it's SELinux related - but I'm not sure how to overcome it.

[hussam-qasem]

Restarting the worker node solved the problem.