Normal Description of problem:
I would like to use `oc get` to create a list of nodes in the cluster that displays the node architecture. Using the `custom-columns` option, I should be able to reference `.metadata.labels."kubernetes.io/arch"`, however, I am unable to escape the period in the name of the label.
Both
$ oc get no manager0.jbsandbox2 -o json | jq '.metadata.labels."kubernetes.io/arch"'
"s390x"
and
$ oc get no -l kubernetes.io/arch=s390x
NAME STATUS ROLES AGE VERSION
manager0.jbsandbox2 Ready control-plane,master 24h v1.31.5
manager1.jbsandbox2 Ready control-plane,master 24h v1.31.5
manager2.jbsandbox2 Ready control-plane,master 24h v1.31.5
worker0.jbsandbox2 Ready worker 24h v1.31.5
worker1.jbsandbox2 Ready worker 24h v1.31.5
worker2.jbsandbox2 Ready worker 24h v1.31.5
seem to work, however, this does not
$ oc get no -o custom-columns=ARCH:{.metadata.labels."kubernetes.io/arch"},NAME:.metadata.name
ARCH NAME
<none> manager0.jbsandbox2
<none> manager1.jbsandbox2
<none> manager2.jbsandbox2
<none> worker0.jbsandbox2
<none> worker1.jbsandbox2
<none> worker2.jbsandbox2
<none> worker3.jbsandbox2
<none> worker4.jbsandbox2
I've tried all sorts of different quoting and escape characters without any luck.
Version-Release number of selected component (if applicable):
Client Version: 4.18.1 Kustomize Version: v5.4.2 Server Version: 4.18.1 Kubernetes Version: v1.31.5
How reproducible:
Consistent
Steps to Reproduce:
1. Log into command line of cluster
2. Run $ oc get no -o custom-columns=ARCH:{.metadata.labels."kubernetes.io/arch"},NAME:.metadata.name
Actual results:
ARCH NAME <none> manager0.jbsandbox2 <none> manager1.jbsandbox2 <none> manager2.jbsandbox2 <none> worker0.jbsandbox2 <none> worker1.jbsandbox2 <none> worker2.jbsandbox2 <none> worker3.jbsandbox2 <none> worker4.jbsandbox2
Expected results:
ARCH NAME s390x manager0.jbsandbox2 s390x manager1.jbsandbox2 s390x manager2.jbsandbox2 s390x worker0.jbsandbox2 s390x worker1.jbsandbox2 s390x worker2.jbsandbox2 amd64 worker3.jbsandbox2 amd64 worker4.jbsandbox2
Additional info:
1. I have similar issues when trying to get other default labels like kubernetes.io/hostname or beta.kubernetes.io/os.
2. I also tried using the jsonpath option like this:
$ oc get no -o jsonpath='{range .items[*]}{.metadata.labels.kubernetes.io/arch}{"\n"}{end}' but got only blanks
