Unable to get list of existing cluster nodes

[matusnovak]

What happened?

I am trying to retrieve a list of existing kubernetes cluster nodes, the same thing that kubectl get node provides.

Based on the documentation, the .get() method of each resource should provide a way to retrieve an existing resource.

Moreover, based on this answer: https://www.pulumi.com/ai/answers/1030542e-799d-49e2-b67d-75846a09c1c0 it should be simple as calling get("nodes") on pulumi_kubernetes.core.v1.NodeList.

However, that does not work as expected. It fails with NodeList.get() missing 1 required positional argument: 'id'. That does not make sense. The NodeList.get("nodes") should not need an id.

I have tried providing the following values for the id parameter of the NodeList.get method:

• The id property of the kubernetes Provider class.
• None
• Empty string
• kubectl describe node System Info -> Machine ID
• kubectl describe node System Info -> System UUID
• kubectl describe node ProviderID
• Kubernetes node name
• System hostname

None of them work.

See the example below.

Example

Minimal Python example:

# File: __main__.py
import pulumi_kubernetes as k8s

nodes = k8s.core.v1.NodeList.get("nodes")

Output of the above example on pulumi up:

Previewing update (example):
     Type                 Name             Plan     Info
     pulumi:pulumi:Stack  example-example           1 error

Diagnostics:
  pulumi:pulumi:Stack (example-example):
    error: Program failed with an unhandled exception:
    Traceback (most recent call last):
      File "/home/mnovak/Documents/pulumi-test/./__main__.py", line 3, in <module>
        nodes = k8s.core.v1.NodeList.get("nodes")
    TypeError: NodeList.get() missing 1 required positional argument: 'id'

Output of pulumi about

CLI          
Version      3.99.0
Go Version   go1.21.5
Go Compiler  gc

Plugins
NAME        VERSION
kubernetes  4.6.1
python      unknown

Host     
OS       ubuntu
Version  22.04
Arch     x86_64

This project is written in python: executable='/home/mnovak/Documents/pulumi-test/venv/bin/python3' version='3.10.12'

Backend        
Name           mnovak-thinkpad
URL            file://~
User           mnovak
Organizations  
Token type     personal

Dependencies:
NAME               VERSION
pip                22.0.2
pulumi-kubernetes  4.6.1
setuptools         59.6.0

Pulumi locates its logs in /tmp by default

Additional context

No response

Contributing

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[EronWright]

The get functions are mainly designed to retrieve a single resource. For example, it is possible to get a specific node by name (in this case, the node named docker-desktop):

node = k8s.core.v1.Node.get("docker-desktop", "docker-desktop")
pulumi.export("resourceVersion", node.metadata.resource_version)

While the NodeList class does have a get function, it isn't an actual resource and doesn't work as expected. That's my understanding, at least.

[safts]

I'm seeing the same behavior.

From the docs:

NodeList is the whole list of all Nodes which have been registered with master.

I don't get why it should need an id indeed. And it doesn't work for me either. Seems like a bug.