8000 Option to remove fields with null value · Issue #61 · jrhouston/tfk8s · GitHub
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Option to remove fields with null value #61

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arthurk opened this issue Oct 18, 2023 · 0 comments
Open

Option to remove fields with null value #61

arthurk opened this issue Oct 18, 2023 · 0 comments

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@arthurk
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arthurk commented Oct 18, 2023

I'm trying to install Istio. I've generated the YAML manifests and converted them to HCL using:

$ istioctl manifest generate > istio.yaml
$ tfk8s -f istio.yaml > istio.tf

Applying with terraform is failing:

Error: API response status: Failure

  with kubernetes_manifest.deployment_istio_system_istio_ingressgateway,
  on istio.tf line 14211, in resource "kubernetes_manifest" "deployment_istio_system_istio_ingressgateway":
14211: resource "kubernetes_manifest" "deployment_istio_system_istio_ingressgateway" {

Deployment.apps "istio-ingressgateway" is invalid:
spec.template.spec.affinity.nodeAffinity.requiredDuringSchedulingIgnoredDuringExecution.nodeSelectorTerms: Required value: must
have at least one node selector term

The problem is with the conversion of null values. The YAML includes:

affinity:
  nodeAffinity:
    requiredDuringSchedulingIgnoredDuringExecution:
    preferredDuringSchedulingIgnoredDuringExecution:

and was converted to:

"affinity" = {
  "nodeAffinity" = {
    "preferredDuringSchedulingIgnoredDuringExecution" = null
    "requiredDuringSchedulingIgnoredDuringExecution" = null
  }
}

After removing the null fields in the YAML or HCL file, the apply was successful.

Is it possible to implement an option in tfk8s that would automatically strip out YAML fields that have no value?
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