[release-1.12] Cherry-pick - Add KEEP_ALIVE to apiserver-proxy #3093
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Some upstream LoadBalancers have low idle connection timeouts and reset the connection. For AWS NLBs its 350sec (unconfigurable). If a controller is watching the API server via the proxy, AWS NLB might simply silently terminate the connection if no data is send between the client and the API server
gardener-robot
added
area/networking
gardener-robot
added
priority/3
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How to categorize this PR?
/area networking
/kind bug
/priority normal
What this PR does / why we need it:
Some upstream LoadBalancers have low idle connection timeouts and reset the connection. For AWS NLBs its 350sec (unconfigurable).
If a controller is watching the API server via the proxy, AWS NLB might simply silently terminate the connection if no data is send between the client and the API server.
Which issue(s) this PR fixes:
n/a
Special notes for your reviewer:
PR in master #3092
Release note: