multi-test.json

{
    "variables": {
        "AWS_ACCESS_KEY": "{{ env `AWS_ACCESS_KEY` }}",
        "AWS_SECRET_KEY": "{{ env `AWS_SECRET_KEY` }}",
        "BUILDKITE_AGENT_ENDPOINT": "api.buildkite.com",
        "BUILDKITE_AGENT_ACCESS_TOKEN": "test-token"
    },
    "builders": [
        {
            "name":             "amazon-ebs-1",
            "type":             "amazon-ebs",
            "vpc_id":           "{{user `AWS_VPC_ID`}}",
            "subnet_id":        "{{user `AWS_SUBNET_ID`}}",
            "security_group_ids":["{{user `AWS_SG_ID`}}"],
            "ami_name":         "Test Ubuntu {{timestamp}} 1",
            "ami_description":  "Test Ubuntu Image",

            "access_key":       "{{user `AWS_ACCESS_KEY`}}",
            "secret_key":       "{{user `AWS_SECRET_KEY`}}",

            "region":           "{{user `AWS_REGION`}}",
            "instance_type":    "t2.micro",
            "source_ami":       "{{user `AWS_AMI_ID`}}",
            "ssh_username":     "ubuntu",
            "associate_public_ip_address": true,
            "ssh_timeout" :     "2m",
            "run_tags": {
                "Name": "base-ubuntu build test",
                "Base": "base-ubuntu",
                "Builder": "packer"
            }
        },
        {
            "name":             "amazon-ebs-2",
            "type":             "amazon-ebs",
            "vpc_id":           "{{user `AWS_VPC_ID`}}",
            "subnet_id":        "{{user `AWS_SUBNET_ID`}}",
            "security_group_ids":["{{user `AWS_SG_ID`}}"],
            "ami_name":         "Test Ubuntu {{timestamp}} 2",
            "ami_description":  "Test Ubuntu Image",

            "access_key":       "{{user `AWS_ACCESS_KEY`}}",
            "secret_key":       "{{user `AWS_SECRET_KEY`}}",

            "region":           "{{user `AWS_REGION`}}",
            "instance_type":    "t2.micro",
            "source_ami":       "{{user `AWS_AMI_ID`}}",
            "ssh_username":     "ubuntu",
            "associate_public_ip_address": true,
            "ssh_timeout" :     "2m",
            "run_tags": {
                "Name": "base-ubuntu build test",
                "Base": "base-ubuntu",
                "Builder": "packer"
            }
        }
    ],
    "provisioners": [
        {
            "type": "shell",
            "inline": [
                "echo foo",
                "touch /tmp/test"
            ]
        }
    ],
    "post-processors": [
        {
            "only": ["amazon-ebs-1"],
            "type": "buildkite",
            "metadata_key_prefix": "build:test_a_ami"
        },
        {
            "only": ["amazon-ebs-2"],
            "type": "buildkite",
            "metadata_key_prefix": "build:test_b_ami"
        }
    ]
}