argo-cd/docs/user-guide/jsonnet.md

Jsonnet

Any file matching *.jsonnet in a directory app is treated as a Jsonnet file.

Build Environment

v1.3

Jsonnet apps have access to the standard build environment via substitution into TLAs and external variables.

E.g. via the CLI:

argocd app create APPNAME \
  --jsonnet-ext-str 'app=${ARGOCD_APP_NAME}' \
  --jsonnet-tla-str 'ns=${ARGOCD_APP_NAMESPACE}'

Or by declarative syntax:

  directory:
    jsonnet:
      extVars:
      - name: app
        value: $ARGOCD_APP_NAME
      tlas:
        - name: ns
          value: $ARGOCD_APP_NAMESPACE