All of these `protocol: TCP` lines are likely from leaked connections made with port-forwarding. The attached PR fixed this for 4.7
here's another PR that *may* help once integrated (and is a leak regardless, so worth picking up)
both attached PRs merged and will be in the next z stream
Tried to trigger the issue locally by setting ulimit on an node just above what was currently being used and pulled an image. Could not reproduce the issue. Also from bug description I see the issue happened randomly. I will mark it verified based on comment 1 & 2.
This bug will be shipped as part of next z-stream release 4.7.11 on May 19th, as 4.7.10 was dropped due to a blocker https://bugzilla.redhat.com/show_bug.cgi?id=1958518.
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory (OpenShift Container Platform 4.7.11 bug fix update), and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHBA-2021:1550