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docs: Fix command for overwriting iptables on kube-proxy replacement install #16264

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merged 1 commit into from
Sep 15, 2021
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docs: Fix command for overwriting iptables on kube-proxy replacement install #16264

merged 1 commit into from
Sep 15, 2021

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Updated the restore iptables command because this command wasn't working on Ubuntu 20.10 arm64.

@Stijn98s Stijn98s requested a review from a team as a code owner May 21, 2021 14:26
@Stijn98s Stijn98s requested a review from a team May 21, 2021 14:26
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Commit a55db194ecfb21110c14dd104fe896cee6b25f41 does not contain "Signed-off-by".

Please follow instructions provided in https://docs.cilium.io/en/stable/contributing/development/contributing_guide/#developer-s-certificate-of-origin

@Stijn98s Stijn98s requested a review from qmonnet May 21, 2021 14:26
@maintainer-s-little-helper maintainer-s-little-helper bot added the dont-merge/needs-sign-off The author needs to add signoff to their commits before merge. label May 21, 2021
@maintainer-s-little-helper maintainer-s-little-helper bot added the dont-merge/needs-release-note-label The author needs to describe the release impact of these changes. label May 21, 2021
@qmonnet qmonnet added the area/documentation Impacts the documentation, including textual changes, sphinx, or other doc generation code. label May 21, 2021
@maintainer-s-little-helper maintainer-s-little-helper bot removed the dont-merge/needs-sign-off The author needs to add signoff to their commits before merge. label May 21, 2021
@qmonnet qmonnet added dont-merge/needs-sign-off The author needs to add signoff to their commits before merge. release-note/misc This PR makes changes that have no direct user impact. labels May 21, 2021
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@qmonnet qmonnet removed the dont-merge/needs-sign-off The author needs to add signoff to their commits before merge. label May 21, 2021
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Thanks! The change looks good, but I would be curious to understand why the previous command wouldn't work. What error did you get?

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Stijn98s commented May 21, 2021 •
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Didn't get a clear error. The changes didn't got applied. These errors occured.

Can't open /dev/fd/63: No such file or directory
and
Warning: iptables-legacy tables present, use iptables-legacy-save to see them

But with this command the changes got applied.

@Stijn98s Stijn98s requested a review from qmonnet May 21, 2021 14:49
@qmonnet qmonnet changed the title Fix overwriting iptables for kube-proxy free installation docs: Fix command for overwriting iptables on kube-proxy replacement install May 21, 2021
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Ah, did you run the command with sudo? Process substitution might be at play here.

If so, let's update the command indeed to avoid other people to hit the same issue.

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Yea, added sudo to both commands. Still didn't work

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qmonnet commented May 21, 2021

Yes, I suppose this is because of the sudo that the <(...) syntax didn't work. See the answers I linked if you want the details. All good for me!

@qmonnet qmonnet added the ready-to-merge This PR has passed all tests and received consensus from code owners to merge. label May 21, 2021
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@qmonnet but wouldn't we need something like sudo iptables-save | grep -v KUBE | sudo iptables-restore? at the very least: sudo su -c "iptables-save | grep -v KUBE | iptables-restore"?

@aanm aanm merged commit 27fd5cc into cilium:master Sep 15, 2021
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