Add container error message to ContainerState by jakecorrenti · Pull Request #16806 · containers/podman

jakecorrenti · 2022-12-11T01:15:54Z

This change aims to store an error message to the ContainerState struct with the last known error from the Start, StartAndAttach, and Stop OCI Runtime functions.

The goal was to act in accordance with Docker's behavior.

Example:

$ podman create -t --name demo alpine efcho Hello World
$ podman start demo
$ podman inspect -f '{{ .State.Error }}' demo
crun: executable file `efcho` not found in $PATH: No such file or directory: OCI runtime attempted to invoke a command that was not found

Fixes: #13729

Signed-off-by: Jake Correnti jakecorrenti+github@proton.me

Does this PR introduce a user-facing change?

Adds a feature for the user to see why a container failed when inspecting it.

jakecorrenti · 2022-12-11T01:18:54Z

I still need to figure out the best way to test all of the different ways an error could be saved to the ContainerState and make sure the message is correct in podman inspect.

I also need to verify that everywhere I have saveContainerError is correct and there aren't any that are unnecessary/missing (I continue to go back and forth with myself on where this should be added).

vrothberg

It's probably easier to return a named error and use a defer to save the error. For instance

defer func() {
if finalErr != nil {
   saveContainerError(...)
}
}()

Any chance we move saving the error further up the call stack? The higher we are, the less locations we have to update (and will probably miss in the future).

@mheon PTAL

jakecorrenti · 2022-12-12T14:32:22Z

I definitely agree the named error would be easier.

The issue I was having with the location of the error being saved came down to the container API. To the best of my knowledge, I don't actually get access to the container state until this point in the call stack, unless I was to modify the container API (which I tried to avoid). I accept the fact there's a good chance I'm wrong, though.

mheon · 2022-12-12T15:28:06Z

I'm OK with leaving the error where it is... Moving out of Libpod is just going to start introducing substantial complexity (having the ability to update the DB outside of libpod is problematic).

libpod/container_api.go

vrothberg

Changes LGTM.

Note that the diff would be even smaller when calling the named error finalError or something that is not yet used in the function bodies. Than, they can continue to return err.

@mheon PTAL

test/e2e/inspect_test.go

TomSweeneyRedHat · 2022-12-28T20:54:35Z

All kinds of red unhappy tests

jakecorrenti · 2023-01-03T17:02:08Z

Is it possible to restart the tests? Looks like some unrelated failure with a missing catatonit executable

rhatdan · 2023-01-03T17:55:12Z

libpod/container_api.go

Can you logrus.Debug this error if not nil?

rhatdan · 2023-01-03T17:55:18Z

libpod/container_api.go

Can you logrus.Debug this error if not nil?

rhatdan · 2023-01-03T17:55:25Z

libpod/container_api.go

Can you logrus.Debug this error if not nil?

This change aims to store an error message to the ContainerState struct with the last known error from the Start, StartAndAttach, and Stop OCI Runtime functions. The goal was to act in accordance with Docker's behavior. Fixes: containers#13729 Signed-off-by: Jake Correnti <jakecorrenti+github@proton.me>

rhatdan · 2023-01-03T19:03:42Z

/lgtm
/hold

rhatdan · 2023-01-05T18:51:14Z

/approve

openshift-ci · 2023-01-05T18:51:20Z

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: jakecorrenti, rhatdan

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jakecorrenti · 2023-01-05T20:58:55Z

/hold cancel

openshift-ci bot added release-note do-not-merge/work-in-progress Indicates that a PR should not merge because it is a work in progress. labels Dec 11, 2022

jakecorrenti force-pushed the podman-inspect-add-error-info branch 2 times, most recently from 9920290 to 80887fc Compare December 11, 2022 15:16

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jakecorrenti changed the title ~~[WIP] Add container error message to ContainerState~~ Add container error message to ContainerState Dec 13, 2022

jakecorrenti marked this pull request as ready for review December 13, 2022 04:29

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Can you logrus.Debug this error if not nil?

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Can you logrus.Debug this error if not nil?

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Can you logrus.Debug this error if not nil?

jakecorrenti force-pushed the podman-inspect-add-error-info branch from 03bc0c8 to df02cb5 Compare January 3, 2023 18:21

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This was referenced Jan 9, 2023

executable file /catatonit [et al] not found in $PATH: No such file or directory #17042

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podman-kube@.service template: expected inactive, got active #17093

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