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Documentation: it is not clear how to refer to nomad variables #24596

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EugenKon opened this issue Dec 3, 2024 · 2 comments
Closed

Documentation: it is not clear how to refer to nomad variables #24596

EugenKon opened this issue Dec 3, 2024 · 2 comments
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@EugenKon
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EugenKon commented Dec 3, 2024

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https://developer.hashicorp.com/nomad/docs/job-specification/template#environment-variables

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It is not clear how to refer to NOMAD_ALLOC_DIR

CERT_PEM={{ file "NOMAD_ALLOC_DIR/cert.pem" | toJSON }}
@philrenaud
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Hi @EugenKon! You can read a bit more on variable interpolation over at https://developer.hashicorp.com/nomad/docs/runtime/interpolation

An example of how we might use NOMAD_ALLOC_DIR in a template block:

      template {
        data        = "<html>hello, world</html>"
        destination = "${NOMAD_ALLOC_DIR}/index.html"
      }

@EugenKon
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EugenKon commented Dec 3, 2024

@philrenaud Your example works perfect. But that is not I am asking for.

Here Go template system tells that $ is not allowed here, thus I removed it from in the my original post.

template {
  data = <<EOH
    CERT_PEM={{ file "${NOMAD_ALLOC_DIR}/cert.pem" | toJSON }}
    EOH

  destination = "secrets/file.env"
  env         = true
}

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@philrenaud @EugenKon