docs: Clarify session affinity support on <5.7 #13318
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Because network namespace cookies are only available in v5.7+, on older kernels, all pods on a given node will be serviced by the same backend for a given service, for east-west traffic. Fixes: 864f2f9 ("docs: Update list of optional kernel requirements") Reported-by: Martynas Pumputis <m@lambda.lt> Signed-off-by: Paul Chaignon <paul@cilium.io>
borkmann
approved these changes
Sep 29, 2020
joestringer
reviewed
Sep 29, 2020
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Ok, "clarify" wasn't the right word; it should have been "don't give the wrong impression that session affinity is inexistent on <5.7" 😄 The table doesn't leave a lot of space for long explanation and I don't want to paraphrase the Session affinity documentation anyway. I thought "full support" would be okay because it hints that the situation may be more complex than 0/1, and further details are just a click away. |
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Ah, I didn't recognize when reviewing that the link explains what "full support" means. I figured there would be a little |
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Because network namespace cookies are only available in v5.7+, on older kernels, all pods on a given node will be serviced by the same backend for a given service, for east-west traffic.
Fixes: #13177