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[StephenKing <1839814@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

The "Instance Metadata" documentation [1] describes nicely, how to use Jinja in cloud-config templates as well as shell scripts.
It states that the first line must be

> ## template: jinja

But only after reading the code, I found out that parsing only happens,
when the MIME type is "text/jinja". Otherwise, the template is not
parsed through Jinja.

Running cloud-init 19.1 on Ubuntu 18.04 on AWS.


[1] https://cloudinit.readthedocs.io/en/latest/topics/instancedata.html#using-instance-data

** Affects: cloud-init
     Importance: Undecided
         Status: New

** Attachment added: "cloud-init.yml"
   https://bugs.launchpad.net/bugs/1839814/+attachment/5282139/+files/cloud-init.yml

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https://bugs.launchpad.net/bugs/1839814

Title:
  Docs: No info about Jinja templates require text/jinja mime type

Status in cloud-init:
  New

Bug description:
  The "Instance Metadata" documentation [1] describes nicely, how to use Jinja in cloud-config templates as well as shell scripts.
  It states that the first line must be

  > ## template: jinja

  But only after reading the code, I found out that parsing only
  happens, when the MIME type is "text/jinja". Otherwise, the template
  is not parsed through Jinja.

  Running cloud-init 19.1 on Ubuntu 18.04 on AWS.

  
  [1] https://cloudinit.readthedocs.io/en/latest/topics/instancedata.html#using-instance-data

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