the port range was too large

[hchenxa]

What this PR does / why we need it:

the port range was too large which impact the kubelet data proxying like below:

Sep 19 03:39:00 hchenxa-1 hyperkube[12683]: E0919 03:39:00.856058   12683 upgradeaware.go:310] Error proxying data from client to backend: readfrom tcp 127.0.0.1:61590->127.0.0.1:1511: write tcp 127.0.0.1:61590->127.0.0.1:1511: write: broken pipe

Which issue this PR fixes (optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close that issue when PR gets merged): fixes #

Special notes for your reviewer:

/assign @aledbf

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[antoineco]

The example aims at showing how to increase the range, for heavily loaded servers, not for local dev setups.

32768 is the default, reverting to the default has little value in my opinion.

Is there something I may have missed?

[hchenxa]

kubelet seems will use some port during startup, I apply the changes in my test environment and found some errors like below:

Sep 19 03:39:00 hchenxa-1 hyperkube[12683]: E0919 03:39:00.856058   12683 upgradeaware.go:310] Error proxying data from client to backend: readfrom tcp 127.0.0.1:61590->127.0.0.1:1511: write tcp 127.0.0.1:61590->127.0.0.1:1511: write: broken pipe

[antoineco]

Thanks for the clarification.

[aledbf]

@hchenxa as @antoineco said this example shows how to adjust the limits for heavy loaded servers
Using the defaults adds no value. That said, the issue you see is not related to this change.
Also, all the examples are just that, examples, you need to make the necessary changes for your environment
Closing.