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libimage: pull: warn if platforms do not match #1052

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vrothberg
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Warn when the platform of a pulled image does not match the
user-specified platform. The checks are only performed if the user
requested a custom platform.

Do not error out and warn only since there are many images in the wild
that claim to be of another architecture. An error would break existing
workloads; we did that once and had to revert immediately.

Fixes: containers/podman/issues/14293
Signed-off-by: Valentin Rothberg [email protected]

@vrothberg
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PTAL @flouthoc @Luap99 @rhatdan

libimage/runtime.go Outdated Show resolved Hide resolved
if writer == nil {
logrus.Debugf("WARNING: %s", msg)
} else {
fmt.Fprintf(writer, "WARNING: %s\n", msg)
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Should this be also logrus.Warnf

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No, I want this on the writer. This way, it'll be displayed on the remote clients as well.

Warn when the platform of a pulled image does not match the
user-specified platform.  The checks are only performed if the user
requested a custom platform.

Do not error out and warn only since there are many images in the wild
that claim to be of another architecture.  An error would break existing
workloads; we did that once and had to revert immediately.

Fixes: containers/podman/issues/14293
Signed-off-by: Valentin Rothberg <[email protected]>
@vrothberg vrothberg force-pushed the platform-check-warning branch from 1a9e70b to 8cc89fa Compare May 30, 2022 12:26
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LGTM

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@flouthoc good to merge?

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/lgtm
/approve

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openshift-ci bot commented May 30, 2022

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: flouthoc, vrothberg

The full list of commands accepted by this bot can be found here.

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@openshift-merge-robot openshift-merge-robot merged commit 6d22aa8 into containers:main May 30, 2022
@vrothberg vrothberg deleted the platform-check-warning branch May 31, 2022 07:08
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podman pull --arch and --platform values are full ignored
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