Packer Ansible provisioner, how to specify the host of the container/machine?

[Kevin Galkov]

Hi #packer!

I am trying to learn more about Packer and Ansible. I think those too along with Terraform, Bazel and jsonnet will be great to use! 

With packer I am able to pass in a playbook.yml and an inventory file to Ansible. However, I would like to be able to specify to ansible what host it is currently running on, so it knows what section of the inventory file to utilize.

I tried the `host_alias` parameter, but I then ended up with:

   amazon-ebs: fatal: [master_host]: UNREACHABLE! => {"changed": false, "msg": "Failed to connect to the host via ssh: ssh: Could not resolve hostname master_host: nodename nor servname provided, or not known", "unreachable": true}

Any ideas on what is the best way to tell Ansible what machine it is provisioning through Packer?

Thank you!

Kevin

[provision.yml file:::]

---

- hosts: all

  vars:

    kubernetes_allow_pods_on_master: true

  roles:

    - geerlingguy.docker

    - geerlingguy.kubernetes

[inventory_master file:::]

[master]

master_host

[master:vars]

kubernetes_role=master

[node]

node_host1

node_host2

[node:vars]

kubernetes_role=node

[example.json file:::]

{

  "variables": {

    "aws_access_key": "",

    "aws_secret_key": ""

  },

  "builders": [{

    "type": "amazon-ebs",

    "access_key": "{{user `aws_access_key`}}",

    "secret_key": "{{user `aws_secret_key`}}",

    "region": "us-east-1",

    "source_ami_filter": {

      "filters": {

        "virtualization-type": "hvm",

        "name": "ubuntu/images/*ubuntu-xenial-16.04-amd64-server-*",

        "root-device-type": "ebs"

      },

      "owners": ["099720109477"],

      "most_recent": true

    },

    "instance_type": "t2.micro",

    "ssh_username": "ubuntu",

    "ami_name": "packer-example {{timestamp}}"

  }],

  "provisioners": [{

      "type": "ansible",

      "user": "root",

      "playbook_file": "/Users/kevin/pdev/tgkj/corp/dev/provision.yml",

      "inventory_file": "/Users/kevin/pdev/tgkj/corp/dev/inventory_master.yml",

      "host_alias": "master_host"

    }, {

      "type": "shell",

      "inline": [

        "echo Thanks to https://alex.dzyoba.com/blog/packer-for-docker/ and make sure to use jsonnet to properly share the configuration."

      ]

    }

  ]

}

[Rickard von Essen]

Try to remove the inventory_file option

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[Kevin Galkov]

How would I indicate to the machine what kubernetes installation it needs to use? For clarity, I'm using these roles: https://github.com/geerlingguy/ansible-role-kubernetes#two-or-more-nodes-single-master-cluster

On Wednesday, September 18, 2019 at 12:17:30 AM UTC-7, Rickard von Essen wrote:

Try to remove the inventory_file option

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[Rickard von Essen]

It seems like you only need to add

extra_arguments: [ "--extra-vars", "kubernetes_role=master"] 

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