Calico pod getting exited post patching

Application pods getting exited right after calico pod got excited in docker cluster. This behaviour is observed post patching on random nodes. What could be the issus

I am afraid you will have to loose a couple of more words about your situation. Seeing the terms calico, pod and swarm beeing used in the same context is rather confusing.

What can be the issue if calico pod getting exited on random node after patching