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NoneType' object is not subscriptable error during aws-eks-kubectl-run pipe run

Rutger van Bruggen

Hi,

I'm trying to apply a yaml file using the aws-eks-kubectl-run pipe but it returns an error.

If I try to apply the yaml file manually it works without any issues

The error is:

✔ Successfully updated the kube config.
Traceback (most recent call last):
File "/pipe.py", line 42, in <module>
pipe.run()
File "/usr/local/lib/python3.7/site-packages/kubectl_run/pipe.py", line 112, in run
self.handle_apply()
File "/usr/local/lib/python3.7/site-packages/kubectl_run/pipe.py", line 77, in handle_apply
self.update_labels_in_metadata(template_file, labels)
File "/usr/local/lib/python3.7/site-packages/kubectl_run/pipe.py", line 31, in update_labels_in_metadata
yaml_doc['metadata'].setdefault('labels', {}).update(labels)
TypeError: 'NoneType' object is not subscriptable

I'm trying to apply the file https://s3.amazonaws.com/spotinst-public/integrations/kubernetes/cluster-controller/spotinst-kubernetes-cluster-controller-ga.yaml.

- wget https://s3.amazonaws.com/spotinst-public/integrations/kubernetes/cluster-controller/spotinst-kubernetes-cluster-controller-ga.yaml
- ls -latrh
- pipe: atlassian/aws-eks-kubectl-run:1.2.4
variables:
AWS_ACCESS_KEY_ID: $AWS_ACCESS_KEY_ID
AWS_SECRET_ACCESS_KEY: $AWS_SECRET_ACCESS_KEY
AWS_DEFAULT_REGION: 'eu-west-1'
CLUSTER_NAME: "$name-$environment"
KUBECTL_COMMAND: 'apply'
# KUBECTL_ARGS: '<array>' # Optional
RESOURCE_PATH: "spotinst-kubernetes-cluster-controller-ga.yaml"
# LABELS: '<array>' # Optional
WITH_DEFAULT_LABELS: 'false'
DEBUG: 'true'

Changing the 'with_default_labels' to true also doesn't fix the issue.

Any idea how to fix this issue? for other yaml files it works without any issues

Accepted answers

Oleksandr Kyrdan

Hi @Rutger van Bruggen ,

thank you for your question.

The problem is in "spotinst-kubernetes-cluster-controller-ga.yam" file. It ends with three dashes (“---”).

According to YAML specs 2.2 Structures:

YAML uses three dashes (“---”) to separate directives from document content. This also serves to signal the start of a document if no directives are present. Three dots ( “...”) indicate the end of a document without starting a new one, for use in communication channels.

during parsing the file pipe's method `update_labels_in_metadata` tries to find all separate documents from provided file, but the latest three dashes (“---”) declare false start of the new document.

It'd be better add pre-processing and remove trailing three dashes (“---”) from the file.

- truncate -s-4 spotinst-kubernetes-cluster-controller-ga.yaml

Also, we'll think about this case to prevent breaking the pipe.

All comments

Oleksandr Kyrdan

Hi @Rutger van Bruggen ,

thank you for your question.

The problem is in "spotinst-kubernetes-cluster-controller-ga.yam" file. It ends with three dashes (“---”).

According to YAML specs 2.2 Structures:

YAML uses three dashes (“---”) to separate directives from document content. This also serves to signal the start of a document if no directives are present. Three dots ( “...”) indicate the end of a document without starting a new one, for use in communication channels.

It'd be better add pre-processing and remove trailing three dashes (“---”) from the file.

- truncate -s-4 spotinst-kubernetes-cluster-controller-ga.yaml

Also, we'll think about this case to prevent breaking the pipe.

Rutger van Bruggen

Thanks for the update. I can confirm it fixed the issue

Rahul Kadam

Can it also happen with comments ?

I dont have trailing --- , however i added comments at the top like

---

# Comment

---

and started getting this same error.

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