CODEWITHSUNDEEP
ansibleansible-inventoryansible-template
Rabin Poudyal
Rabin Poudyal

Reputation: 778

My Host vars and Group vars are not loading

This is my ansible.cfg at the root of the project.

[defaults]
inventory = ./ansible/inventory/staging

This is my content of staging inventory

[all_hosts]
rails ansible_ssh_host=170.64.208.17

[app_hosts]
rails

this is my playbook:

- hosts: rails
  remote_user: deploy
  become: yes
  roles:
    - ruby
    - rails

and in my roles/ruby/main.yml. I have following code

- name: Install dependencies for rbenv
  package:
    name: "{{ item }}"
    state: present
  with_items:
    - git
    - curl
    - libssl-dev
    - libreadline-dev
    - zlib1g-dev
    - build-essential
    - libffi-dev
    - libyaml-dev
- name: Clone rbenv repository
  git:
    repo: https://github.com/rbenv/rbenv.git
    dest: /home/deploy/.rbenv 
    version: master
- name: Set rbenv path
  lineinfile:
    dest: "{{ ansible_env.HOME }}/.bashrc"
    line: 'export PATH="/home/deploy/.rbenv/bin:$PATH"'
    insertafter: EOF
    state: present
- name: Initialize rbenv in shell
  shell: |
    export PATH="/home/deploy/.rbenv/bin:$PATH"
    eval "$(rbenv init -)"
- name: Clone ruby-build repository
  git:
    repo: https://github.com/rbenv/ruby-build
    dest: ~/.rbenv/plugins/ruby-build
    version: master
- name: Install Ruby version
  shell: |
    export PATH="/home/deploy/.rbenv/bin:$PATH"
    eval "$(rbenv init -)"
    rbenv install {{ ruby_version }}
    rbenv global {{ ruby_version }}
- name: Debug ruby version
  debug:
    msg: "{{ ruby_version }}"

But it throws this:

fatal: [rails]: FAILED! => {"msg": "The task includes an option with an undefined variable. The error was: 'ruby_version' is undefined. 'ruby_version' is undefined\n\nThe error appears to be in '/Users/rabin/code/web/ansible/playbooks/roles/ruby/tasks/main.yml': line 34, column 3, but may\nbe elsewhere in the file depending on the exact syntax problem.\n\nThe offending line appears to be:\n\n    version: master\n- name: Install Ruby version\n  ^ here\n"}

I expect it to load variables from ansible/host_vars/rails

ruby_version: "3.2.2"
rails_env: staging

I also tried to load variables by defining group vars using ansible/group_vars/app_hosts

ruby_version: "3.2.2"
rails_env: staging

But it didn't work. Please suggest what i did wrong. I want to load them on jinga templates as well. Thanks in advance

Upvotes: 2

Views: 67

Answers (2)

U880D
U880D

Reputation: 12083

A minimal example based on an inventory file called example.com

[app]
one.example.com
two.example.com
three.example.com

and group_vars files with content

group_vars/all

ansible_ssh_host: 170.64.208.17

group_vars/app

ruby_version: "3.2.2"
rails_env: staging

called via

ansible-inventory --inventory example.com --list

will result into an output of

{
    "_meta": {
        "hostvars": {
            "one.example.com": {
                "ansible_ssh_host": "170.64.208.17",
                "rails_env": "staging",
                "ruby_version": "3.2.2",
                "stat": true
            },
            "three.example.com": {
                "ansible_ssh_host": "170.64.208.17",
                "rails_env": "staging",
                "ruby_version": "3.2.2"
            },
            "two.example.com": {
                "ansible_ssh_host": "170.64.208.17",
                "rails_env": "staging",
                "ruby_version": "3.2.2"
            }
        }
    },
    "all": {
        "children": [
            "app",
            "ungrouped"
        ]
    },
    "app": {
        "hosts": [
            "one.example.com",
            "three.example.com",
            "two.example.com"
        ]
    }
}

To summarize, since it is not reproducible for me, you may have another look into How to build your inventory in general and Organizing host and group variables specifically.

Please take also note that there are Default groups like all. No need to define such differently named in the inventory again.

As shown one can test the whole inventory, group and var files just with the command ansible-inventory.

Upvotes: 1

Vladimir Botka
Vladimir Botka

Reputation: 68084

Take a look at Variable precedence: Where should I put a variable?. There are two options for host_vars:

  • 9.inventory host_vars/*
  • 10.playbook host_vars/*

You configured the path to the inventory ./ansible/inventory/staging. In this case, you have to put the host_vars also into this directory

./ansible/inventory/staging/host_vars/rails

The next option is putting the host_vars into the playbook's directory. This one (10.) will override the previous option (9.).

Upvotes: 2

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