iptables: Remove '--nowildcard' from socket match#12248
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joestringer merged 3 commits intomasterfrom Jun 29, 2020
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test-me-please |
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retest-net-next |
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test-only --k8s_version=1.18 --focus="K8s.*AutoDirectNodeRoutes" --kernel_version=net-next |
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nebril
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LGTM overall, one small change request (ExpectWithOffset comment).
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nit: this line will never get executed
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Please use ExpectWithOffset, this will make test failure point to parent call instead of this line.
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OK, so the offset value of 1 will point the failure to caller, 2 would point the failure to the caller's caller etc.?
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Fixed a white-space formatting error. |
This was referenced Jul 8, 2020
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Since we address NodePort in k8s2 using the DNS proxy port of k8s2 as the source port from k8s1, one round is enough regardless of the backend selection, as in both cases the replies are reverse NATted at k8s2 (where the port conflict was happening before it was fixed by #12248). Fixes: #12336 Signed-off-by: Jarno Rajahalme <jarno@covalent.io>
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Since we address NodePort in k8s2 using the DNS proxy port of k8s2 as the source port from k8s1, one round is enough regardless of the backend selection, as in both cases the replies are reverse NATted at k8s2 (where the port conflict was happening before it was fixed by #12248). Fixes: #12336 Signed-off-by: Jarno Rajahalme <jarno@covalent.io>
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[ upstream commit 657295c ] Since we address NodePort in k8s2 using the DNS proxy port of k8s2 as the source port from k8s1, one round is enough regardless of the backend selection, as in both cases the replies are reverse NATted at k8s2 (where the port conflict was happening before it was fixed by #12248). Fixes: #12336 Signed-off-by: Jarno Rajahalme <jarno@covalent.io> Signed-off-by: Martynas Pumputis <m@lambda.lt>
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[ upstream commit 657295c ] Since we address NodePort in k8s2 using the DNS proxy port of k8s2 as the source port from k8s1, one round is enough regardless of the backend selection, as in both cases the replies are reverse NATted at k8s2 (where the port conflict was happening before it was fixed by #12248). Fixes: #12336 Signed-off-by: Jarno Rajahalme <jarno@covalent.io> Signed-off-by: Martynas Pumputis <m@lambda.lt>
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'--no-wildcard' allows the socket match to find zero-bound (listening)
sockets, which we do not want, as this may intercept traffic intended
for other nodes, for example, reply traffic when an ephemeral source
port number allocated in one node happens to be the same as the
allocated proxy port number in the node doing the iptables socket
match changed here.
Note to backporters: The test suite changes need not be backported
to older releases (e.g., 1.6) if these are non-trivial merge conflicts.
Fixes: #12281
Fixes: #12127
Fixes: #8945
Fixes: #10669
Fixes: #11867
Fixes: #10118
Fixes: #11313
Fixes: #12241
Fixes: #10231
Related: #8864
Signed-off-by: Jarno Rajahalme jarno@covalent.io