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Terraform Variable for Packer Manifest post-processor output
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| { | |
| "builders": [ | |
| { | |
| "type": "digitalocean", | |
| ... | |
| } | |
| ], | |
| "post-processors":[ | |
| { | |
| "type": "manifest", | |
| "output": "packer.auto.tfvars.json" | |
| } | |
| ] | |
| } |
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| { | |
| "builds": [ | |
| { | |
| "name": "digitalocean", | |
| "builder_type": "digitalocean", | |
| "build_time": 1589911059, | |
| "files": null, | |
| "artifact_id": "ams3:63876948", | |
| "packer_run_uuid": "41577b9e-4c85-ddef-a692-deaf6145783b", | |
| "custom_data": null | |
| }, | |
| { | |
| "name": "digitalocean", | |
| "builder_type": "digitalocean", | |
| "build_time": 1589912902, | |
| "files": null, | |
| "artifact_id": "nyc1,nyc3,sgp1,lon1,fra1,tor1,sfo2,blr1,ams3:63877376", | |
| "packer_run_uuid": "94e2e639-4e9b-e806-5248-7a8d7dc7eca4", | |
| "custom_data": null | |
| } | |
| ], | |
| "last_run_uuid": "94e2e639-4e9b-e806-5248-7a8d7dc7eca4" | |
| } |
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| // Define Terraform input variables for packer variables to allow their usage | |
| variable "builds" { | |
| type = list( | |
| object( | |
| { | |
| name=string, | |
| builder_type=string, | |
| build_time=number, | |
| files=list(object({name=string, size=number})), | |
| artifact_id=string, | |
| packer_run_uuid=string | |
| } | |
| ) | |
| ) | |
| description = "List of images, as generated by Packer's 'Manifest' post-processor." | |
| } | |
| variable "last_run_uuid" { | |
| type = string | |
| } |
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| // Accessing the artifact_id's image ID in a digitalocean_droplet resource | |
| resource "digitalocean_droplet" "my-droplet" { | |
| image = split(":", var.builds[length(var.builds)-1].artifact_id)[1] | |
| ... | |
| } |
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Note that this does not read the
custom_datafield, as we do not use it.Additonally, it makes sense to specify the post-processor's output file as
<some-name>.auto.tfvars.jsonin the directory you want to execute terraform in, as that automatically loads the variables for you (no need for-var-file)