Packer is failing with Ansible "You need to be root to perform this command"

[Ibrahim Buamod]

I am using packer and the amazon-ebs module but I keep getting this error 

[0;32m    amazon-ebs: fatal: [default]: FAILED! => {"changed": false, "msg": "You need to be root to perform this command.\n", "rc": 1, "results": ["Loaded plugins: priorities, update-motd, upgrade-helper\n"]} [0m

the provisioner 

{
  "type": "ansible",
  "ansible_env_vars": [ "ANSIBLE_NOCOLOR=True","become_user=root","become=true" ],
  "playbook_file": "./Ansible/playbook.yml"
}

the ansible playbook is 

---

- name: Provision Python
  hosts: all
  gather_facts: no
  tasks:
  - name: install git
    package:
      name: git
      state: present

[Rickard von Essen]

"ansible_env_vars": [ "ANSIBLE_NOCOLOR=True","become_user=root","become=true" ],

Is incorrect, it should be:

"ansible_env_vars": [ "ANSIBLE_NOCOLOR=True" ],

"extra_arguments": [ "--become" ],

(and --become-user root can be omitted since that is the default, unless you configured this in a custom config file and need to set it back.)

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[Ibrahim Buamod]

but now I am having this error 

amazon-ebs: fatal: [127.0.0.1]: FAILED! => {"changed": false, "module_stderr": "sudo: a password is required\n", "module_stdout": "", "msg": "MODULE FAILURE\nSee stdout/stderr for the exact error", "rc": 1} [0m

[Rickard von Essen]

So your user requires password for sudo. You have to allow nopassword in sudoers, look at man sudoers.conf 1). You need to configure this before provisioning, since changing that requires root. On AWS you use user-data/cloud-init for that see 2) and 3)

1) https://linux.die.net/man/5/sudoers 

2) https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/user-data.html

3) https://cloudinit.readthedocs.io/en/latest/

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