Boolean template value substitution

[brunocascio]

Hey folks! I'm trying to customize the value of prune and selHeal depending on the environment I'm deploying to, but I cannot be able to interpolate boolean values. Could someone help me, please?

My manifest looks like this:

apiVersion: argoproj.io/v1alpha1
kind: ApplicationSet
metadata:
  name: myapp-www
  namespace: argocd
spec:
  generators:
    - list:
        elements:
          - environment: dev
            cluster: nonprod
            selfHeal: true
            prune: true
          - environment: ppd
            cluster: nonprod
            selfHeal: true
            prune: true
          - environment: prod
            cluster: prod
            selfHeal: true
            prune: false
  template:
    metadata:
      name: 'myapp-www-{{environment}}' 
    spec:
      project: "myapp-www"
      source:
        repoURL: https://myrepo.com/web/myapp-deployment.git
        targetRevision: HEAD
        path: '.deploy'
      destination:
        name: '{{cluster}}'
        namespace: 'myapp-www-{{environment}}'
      syncPolicy:
        automated:
          prune: '{{prune}}'
          selfHeal: '{{selfHeal}}'
        syncOptions:
          - CreateNamespace=true

Thanks in advance for the help and for this amazing product!

[ishitasequeira]

@brunocascio this is a known issue. The issues you could track

1. Cannot template syncPolicy parameters because of applicationset validation applicationset#424
2. Non-string template variables (alt: template overrides from git) applicationset#287

You could try removing the single quotes around the values:
from

        prune: '{{prune}}'
        selfHeal: '{{selfHeal}}'

to

      prune: {{prune}}
      selfHeal: {{selfHeal}}

[brunocascio]

Hi @ishitasequeira Thanks for your reply :)

Since I'm using kustomize, I need to use quotes, as @jemag commented here argoproj/applicationset#424 (comment)

[stephaneetje]

Hello, i have the same problem, i'm using helm and can't find a way to pass a boolean. Validator always throw an error:

Unable to save changes: ApplicationSet.argoproj.io "ciam" is invalid: spec.template.spec.syncPolicy.automated.prune: Invalid value: "string": spec.template.spec.syncPolicy.automated.prune in body must be of type boolean: "string"

This is what i tried (which is working for the other params with string expected):

      syncPolicy:
        automated:
          prune: {{`{{prune}}`}}

[nathan-bowman]

I'm running into the same issue, looking forward to a fix.

[vl-kp]

i am using kubectl, i got error on client error: error parsing tenant-3.yaml: error converting YAML to JSON: yaml: invalid map key: map[interface {}]interface {}{".app.prune":interface {}(nil)}

[alita1991]

Hi, is there any workaround for this issue? I have the same problem, I need to set the skipCrds flag to true/false

[EladAviczer]

Same here :(
invalid: spec.template.spec.source.helm.skipCrds: Invalid value: "string": spec.template.spec.source.helm.skipCrds in body must be of type boolean: "string"

[wumaxd]

fixed it (using Helm) with the following:

  templatePatch: |
    spec:
      source:
        helm:
          skipCrds: {{`{{ .skipCrds }}`}}

and .skipCrds as a parameter in generators.list.elements[]

[theJaxon]

I'm also facing the same issue, any working solutions ?

[pc-tzimmerman]

Use multiple ApplicationSets. Or Parameter Overrides.

[EladAviczer]

acutally they state here that it is not possible
https://argo-cd.readthedocs.io/en/stable/operator-manual/applicationset/GoTemplate/#limitations
Hope they will add it soon.

[wumaxd]

If you applying the setup via kustomize or from a Helm Chart to ArgoCD , you can "trick" the system by overriding it via the patch (not nice but it works): https://argo-cd.readthedocs.io/en/stable/operator-manual/applicationset/Template/#template-patch

Specific example (kustomize):

apiVersion: argoproj.io/v1alpha1
kind: ApplicationSet
metadata:
  name: myapp-www
  namespace: argocd
spec:
  generators:
    - list:
        elements:
          - environment: dev
            cluster: nonprod
            selfHeal: true
            prune: true
          - environment: ppd
            cluster: nonprod
            selfHeal: true
            prune: true
          - environment: prod
            cluster: prod
            selfHeal: true
            prune: false
  template:
    metadata:
      name: 'myapp-www-{{environment}}' 
    spec:
      project: "myapp-www"
      source:
        repoURL: https://myrepo.com/web/myapp-deployment.git
        targetRevision: HEAD
        path: '.deploy'
      destination:
        name: '{{cluster}}'
        namespace: 'myapp-www-{{environment}}'
      syncPolicy:
        syncOptions:
          - CreateNamespace=true
  templatePatch: |
    spec:
      syncPolicy:
        automated:
          prune: {{ .prune }}
          selfHeal: {{ .selfHeal }}

Specific example (Helm):

apiVersion: argoproj.io/v1alpha1
kind: ApplicationSet
metadata:
  name: myapp-www
  namespace: argocd
spec:
  generators:
    - list:
        elements:
          - environment: dev
            cluster: nonprod
            selfHeal: true
            prune: true
          - environment: ppd
            cluster: nonprod
            selfHeal: true
            prune: true
          - environment: prod
            cluster: prod
            selfHeal: true
            prune: false
  template:
    metadata:
      name: 'myapp-www-{{environment}}' 
    spec:
      project: "myapp-www"
      source:
        repoURL: https://myrepo.com/web/myapp-deployment.git
        targetRevision: HEAD
        path: '.deploy'
      destination:
        name: '{{cluster}}'
        namespace: 'myapp-www-{{environment}}'
      syncPolicy:
        syncOptions:
          - CreateNamespace=true
  templatePatch: |
    spec:
      syncPolicy:
        automated:
          prune: {{`{{ .prune }}`}}
          selfHeal: {{`{{ .selfHeal }}`}}

For Helm you need the extra {{`...`}}