Packer user variables from script

Question

I have a number of variables that can be populated from bash queries on execution. I'm struggling to find a way to make this a reality.

Essentially, I'm trying to accomplish this:

{
  "variables": {
    "ssh_name": "root",
    "ssh_pass": "password123",
    "server_version": "grep product.version= ../product.properties | sed 's:product.version=::'"
  },
  "builders": [
    {
      "type": "virtualbox-iso",

I've tried several iterations of this, but I can't seem to find a working substitution call.

I can't figure out what you're trying to do. Is that an example output? What is your input in that case? — divibisan, Apr 06 '18 at 17:13
The variable "server_version" should be set from the command that follows. It doesn't, I've tried a couple different ways to approach it, but no luck so far. — NickS, Apr 06 '18 at 17:34
Please review [How to create a Minimal, Complete, and Verifiable example](https://stackoverflow.com/help/mcve) — Stefan Crain, Apr 08 '18 at 13:45

score 0 · Accepted Answer · edited Apr 08 '18 at 21:57

0

Just pass it in with a subshell:

packer build -var server_version=$(grep product.version= ../product.properties | \
sed 's:product.version=::') template.json

edited Apr 08 '18 at 21:57

Stefan Crain

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answered Apr 06 '18 at 19:51

Rickard von Essen

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Yea, I get this can be done as passed options, trying to streamline this. – NickS Apr 06 '18 at 20:13
This is the only way. – Rickard von Essen Apr 07 '18 at 05:13

Packer user variables from script

1 Answers1