user variables not working in vagrant post provisioner when using vagrantfile.template
jamesla opened this issue · comments
I have configured a variable in my packer file like so:
{
"variables": {
"some_variable": "some_value"
},
// ... other configurations ...
}
configuring my vagrant post provisioner like this:
post-processor "vagrant" {
vagrantfile_template = "path/to/Vagrantfile.template"
}
and trying to interpolate the variable like this in my vagrantfile.template
Vagrant.configure("2") do |config|
# Use the variable like this:
config.vm.provider "virtualbox" do |vb|
vb.name = "{{ user `some_variable` }}"
end
end
and get the following error:
* Post-processor failed: template: root:17:25: executing "root" at <user `some_variable`>: error calling user: test
The docs are very limited in terms of this functionality - am I doing this right? How is it supposed to work?
Hi 👋 thanks for reaching out.
For general questions we recommend reaching out to the [community forum](https://discuss.hashicorp.com/c/packer) for greater visibility.
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Hi @jamesla user variables within the vagrant template file is not something that is supported. Only the following template variables are allowed for use with a vagrant template: {{ .BoxName }}, {{ .SyncedFolder }}, and {{.InsertKey}}, which correspond to the Packer options box_name, synced_folder, and insert_key.
Alternatively, the template variable {{.DefaultTemplate}} is available for use if you wish to extend the default generated template.
Since you are looking to create a template with custom variable data I recommend you take a look at the templatefile function for generating the vagrant file.
locals {
vagrantfile = {
"path/to/Vagrantfile.template" = templatefile("${path.root}/vagrantfile.pkrtpl", var.some_variable)
}
}
post-processor "vagrant" {
vagrantfile_template = local.vagrantfile
}
If you're struggling to get Packer working for the first time, I'd recommend reaching out to the community forum for help. The GitHub issue tracker is only watched by a small subset of maintainers and is really reserved for bugs rather than questions. You'll have a better chance of finding someone who can help you in the forum.
I'm going to close this issue as it is not a bug but feel free to reach out if you run into an issue with the templatefile function that you believe may be a bug.
I'm going to lock this issue because it has been closed for 30 days ⏳. This helps our maintainers find and focus on the active issues.
If you have found a problem that seems similar to this, please open a new issue and complete the issue template so we can capture all the details necessary to investigate further.