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Conditionally keep inbound listeners #28111

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howardjohn
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Fixes #28026

This PR is for 1.6 only, as it is intended only for in place upgrade between certain 1.5 -> 1.6 upgrade paths. This change has no impact by default to minimize potentially high impact changes so late into the 1.6 release

@howardjohn howardjohn requested a review from a team October 20, 2020 17:51
@google-cla google-cla bot added the cla: yes Set by the Google CLA bot to indicate the author of a PR has signed the Google CLA. label Oct 20, 2020
@istio-testing istio-testing added the size/S Denotes a PR that changes 10-29 lines, ignoring generated files. label Oct 20, 2020
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🤔 🐛 You appear to be fixing a bug in Go code, yet your PR doesn't include updates to any test files. Did you forget to add a test?

Courtesy of your friendly test nag.

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LGTM

The root of the cause is an ancient bug in istio-iptables.

Unless we dispatch configs depends on an option `doesIstioIptablesHaveThatBug", there is no way to upgrade.

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lambdai commented Oct 21, 2020

Fix my comment: Or 2 step upgrade
User could upgrade istio to the first version where iptables is fixed
And then upgrade to whatever desired istio version.

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6 participants