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Merge pull request #64367 from justinsb/fix_instancenotfound

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Automatic merge from submit-queue (batch tested with PRs 64308, 64367, 64165, 64274). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Restore InstanceNotFound comment & logic

Otherwise node deregistration is broken on AWS.

```release-note
NONE
```
This commit is contained in:
Kubernetes Submit Queue 2018-05-28 18:20:08 -07:00 committed by GitHub
commit 60d72f1d2e
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1
pkg/cloudprovider/cloud.go
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@ -131,6 +131,7 @@ type Instances interface {
// services cannot be used in this method to obtain nodeaddresses
NodeAddressesByProviderID(ctx context.Context, providerID string) ([]v1.NodeAddress, error)
// InstanceID returns the cloud provider ID of the node with the specified NodeName.
// Note that if the instance does not exist or is no longer running, we must return ("", cloudprovider.InstanceNotFound)
InstanceID(ctx context.Context, nodeName types.NodeName) (string, error)
// InstanceType returns the type of the specified instance.
InstanceType(ctx context.Context, name types.NodeName) (string, error)

4
pkg/cloudprovider/providers/aws/aws.go
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@ -1363,6 +1363,10 @@ func (c *Cloud) InstanceID(ctx context.Context, nodeName types.NodeName) (string
}
inst, err := c.getInstanceByNodeName(nodeName)
if err != nil {
if err == cloudprovider.InstanceNotFound {
// The Instances interface requires that we return InstanceNotFound (without wrapping)
return "", err
}
return "", fmt.Errorf("getInstanceByNodeName failed for %q with %q", nodeName, err)
}
return "/" + aws.StringValue(inst.Placement.AvailabilityZone) + "/" + aws.StringValue(inst.InstanceId), nil