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ci: test: k8s: agent_image rootfs check #5791

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stevenhorsman
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In the kubernetes agent_image test we currently have a check:

echo "Check the image was not pulled in the host"
	local pod_id=$(kubectl get pods -o jsonpath='{.items..metadata.name}')
	retrieve_sandbox_id
	rootfs=($(find /run/kata-containers/shared/sandboxes/${sandbox_id}/shared \
		-name rootfs))
	[ ${#rootfs[@]} -eq 1 ]

to ensure that the image hasn't been pulled onto the host. The reason that the check is for a single rootfs is that we found that the pause image was always pulled on the host, presumably due to it being needed to create the pod sandbox.

With the introduction of the nydus-snapshotter code we've found that on some systems (SE and TDX) it appears to be in a different location with nydus-snapshotter, so check for 1, or 0. See an issue at #5781 to track this.

We don't have time to understand this fully now, so we just want the tests to pass and check that we don't have both the pause and test pod container image pulled, so set the check to pass if there are 1, or 0 rootfs' found in /run/kata-containers/shared/sandboxes/

Fixes: #5790

In the kubernetes agent_image test we currently have a check:
```
echo "Check the image was not pulled in the host"
	local pod_id=$(kubectl get pods -o jsonpath='{.items..metadata.name}')
	retrieve_sandbox_id
	rootfs=($(find /run/kata-containers/shared/sandboxes/${sandbox_id}/shared \
		-name rootfs))
	[ ${#rootfs[@]} -eq 1 ]
```
to ensure that the image hasn't been pulled onto the host.
The reason that the check is for a single rootfs is that we found that
the pause image was always pulled on the host, presumably due to
it being needed to create the pod sandbox.

With the introduction of the nydus-snapshotter code we've found
that on some systems (SE and TDX) it appears to be in a different
location with nydus-snapshotter, so check for 1, or 0. See an issue
at kata-containers#5781 to track this.

We don't have time to understand this fully now, so we just want the
tests to pass and check that we don't have both the pause and test
pod container image pulled, so set the check to pass if there are
1, or 0 rootfs' found in /run/kata-containers/shared/sandboxes/

Fixes: kata-containers#5790
Signed-off-by: stevenhorsman <steven@uk.ibm.com>
@stevenhorsman
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/test

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@fidencio fidencio left a comment

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lgtm, thanks @stevenhorsman!

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@BbolroC BbolroC left a comment

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lgtm, thanks @stevenhorsman !

@stevenhorsman
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/test-tdx

@fidencio
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fidencio commented Nov 6, 2023

/test-tdx

Don't bother about this, I don't think we'll be luck enough to have the artefacts built. :-/
We'll have to test it on the operator side.

@stevenhorsman stevenhorsman merged commit 70a388a into kata-containers:CCv0 Nov 6, 2023
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@stevenhorsman stevenhorsman linked an issue Nov 6, 2023 that may be closed by this pull request
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ci: test: k8s: agent_image rootfs check
3 participants