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A vagrant module for ansible, that lets you control vagrant VMs from an ansible playbook.

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tomaskadlec/ansible-vagrant

 
 

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git clone --recursive [email protected]:majidaldo/ansible-vagrant.git

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=============== A vagrant module for ansible that lets you control vagrant VMs from an ansible playbook.

Forked from https://github.com/robparrott/ansible-vagrant

Changes

by caljess599:

  • modified Vagrantfile output to use API version 2
  • disabled synced folders on all VMs created by Vagrantfile
  • specified that forwarded port # specified on guest will be forwarded on host to 10000+# (e.g., guest: 80, host: 10080)
  • added VAGRANT_ROOT variable to control where script-generated files are placed, update paths accordingly
  • passed in vm_name without relying on argument order; changed status variable definition so 'if not running' check works
  • changed count logic so if count on inventory is 1, doesn't change the vm name
  • added logic to check if box image has changed
  • repaired prepare_box logic to check if base image is already downloaded

by majidaldo

  • added log file. log: true|false
  • added share_folder and share_mount nfs sharing (see module documentation)
  • added config_code. custom configuation code that goes in the vagrantfile. the word config. will be converted to config_"machine" so that you can have machine-specific options. great for hypervisor options such as config.vm.memory ...

by tomaskadlec

  • added provider option, default value is virtualbox

The following documentation is a lightly revised version of original.

Overview

Ansible-vagrant is a module for ansible that allows you to create VMs on your local system using Vagrant. This allows you to write ansible playbooks that dynamically create local guests and configure them via the ansible playbook(s). By allowing you to run guests on your local system, this module facilitates testing and development of orchestrated, distributed applications via ansible.

Ansible-vagrant should not be confused with vagrant-ansible which allows you to run ansible playbooks on vagrant-launched hosts.

Dependencies & Installation

The vagrant module for ansible requires:

To install, couple the file "vagrant" to your ansible isntallation, under the "./library" directory.

To run the tests from the repository, cd into "./test" and run

ansible-playbook -v -i hosts vagrant-test.yaml

Getting started with ansible-vagrant

Command Line Use

(The following example assumes you know something about ansible and its syntax and conventions.)

The following is a simple example, and assumes a linux or unix shell prompt.

First create a simple host inventory file for ansible that only includes your local machine:

echo "127.0.0.1" > hosts

The target machine image is called a "box" under vagrant, and can be managed ahead of time using a vagrant command:

vagrant box add lucid64 http://files.vagrantup.com/lucid64.box 

or instead the path can be specified when you start the VM itself. We'll start up a standard VM with ansible-vagrant as follows:

ansible all -i hosts -c local -m vagrant -a "state=up vm_name=myvm box_name=lucid64 box_path=http://files.vagrantup.com/lucid64.box"

This command will download and register the image as "lucid64," then start up the image and attribute the name "myvm" to it. If you had left off the "vm_name" argument, the module will set the vm_name to "ansible" for you.

The command is idempotent, so if the instances are currently running (and you haven't removed any auto-generated state files such as "Vagrantfile.json") then this command will not try to start already running instances.

A more "command" equivalent would be:

ansible all -i hosts -c local -m vagrant -a "command=up vm_name=myvm box_name=lucid64 box_path=http://files.vagrantup.com/lucid64.box"

Note: names in vagrant have to be compatible with the ruby syntax used in Vagrantfiles, so they can't use "-" or "_", and must start with a lowercase letter. *In the future, you can leave off the "box_path" argument, as vagrant registers and caches the image locally.

Once up, you can log into the image via the usual vagrant command:

vagrant ssh myvm

Or more importantly, as part of the ansible inventory, it can be managed via a playbook.

Get the status of the machine:

ansible all -i hosts -c local -m vagrant -a "cmd=status vm_name=myvm"

Get its configuration (in particular ssh config values) via the config subcommand:

ansible all -i hosts -c local -m vagrant -a "cmd=config vm_name=myvm"

Then you can halt the machine when you're done:

ansible all -i hosts -c local -m vagrant -a "cmd=halt vm_name=myvm"  

and remove its record:

ansible all -i hosts -c local -m vagrant -a "cmd=destroy vm_name=myvm"  

This last command will halt and then remove the record if the machine had been running.

Lastly, we can shutdown and clear out all records with the "clear" subcommand:

ansible all -i hosts -c local -m vagrant -a "cmd=clear"

Most correctly, we can insist that the state of the instances is "absent":

ansible all -i hosts -c local -m vagrant -a "state=halt vm_name=myvm"      

Playbooks

Playbooks allow you to start up instances in vagrant dynamically, add them to the inventory and then run "plays" on those newly created instances from a single command.

Note: when playing around with builds using vagrant, it's useful to clear out your Vagrantfile and VMs before running a playbook. The following is the equivalent of a "make clean" :

ansible all -i hosts -c local -m vagrant -a "cmd=clear"

(It's kinda fun to watch the VirtualBox manager window, and see the instances shutdown and disappear like good little VMs :-> )

Here's an example playbook:

--- 
#
# This section fires up a set of instances dynamically using vagrant,
#  registers it in the inventory under 
#  the group "vagrant_hosts"
# then logs in and pokes around. 
#
- hosts:
  - localhost
  connection: local
  gather_facts: False

  vars:
    box_name: lucid32
    box_path: http://files.vagrantup.com/lucid32.box
    vm_name: frank

  tasks:
  - name: Fire up a set of vagrant instances to log into
    local_action: vagrant
        state=up
        box_name=${box_name}
        box_path=${box_path}
        vm_name=${vm_name}
        count=3
    register: vagrant
  
  - name: Remind us about the vagrant private key ...
    action: debug 
            msg="Be sure to add the ssh private key for vagrant, here ... '${vagrant.instances[0].key}'."

  - name: Host info ...
   action: debug
            msg='${item.public_ip}${item.port}' 
    with_items: ${vagrant.instances}
  
  - name: Capture that host's contact info into the inventory (the hostname is a unique ID from Vagrant ... )
    action: add_host 
            hostname='${item.vagrant_name}' 
            ansible_ssh_port='${item.port}' 
            ansible_ssh_host='${item.public_ip}'
            groupname=vagrant_hosts
    with_items: ${vagrant.instances}

#
# Run on the vagrant_hosts group, checking that we have basic ssh access...
#    
- hosts:
  - vagrant_hosts
  user: vagrant
  vars:
    vm_name: frank

  gather_facts: True
           
  tasks:

  - name: Let's see if we can login
    action: command uname -a

  - name: Let's see all the ansible vars about vagrant hosts...
    action: setup

  - name: Generate a ./blah_ansible.vars to check for hostvars
    action: template src=test-vagrant-hostinfo.j2 dest=/tmp/localhost_ansible.vars

#    
# Shut them down 
#
  - name: Now shut them down ...
    local_action: vagrant 
                  state=halt
                  vm_name='${vm_name}'
              
  - name: Now clear it out ...
    local_action: vagrant clear

Methods and Data Structures

Here, let's talk about the data returned by the various commands.

These data structures take into account that there may be multiple named sets of instances, and multiple instances within each "up invocation"

UP

The up subcommand

ansible -m vagrant -a "command=up box_name=lucid32 vm_name=fred count=2

asks vagrant to start up two identical instances of the "lucid32" box, and name then "fred." When successful produces output of this type:

{
  "changed": true, 
  "instances": [
    {
      "id": "fred0", 
      "internal_ip": "192.168.179.253", 
      "key": "/Users/username/.vagrant.d/insecure_private_key", 
      "name": "fred", 
      "port": "2200", 
      "public_dns_name": "127.0.0.1", 
      "public_ip": "127.0.0.1", 
      "status": "running", 
      "username": "vagrant", 
      "vagrant_name": "fred0"
    }, 
    {
      "id": "fred1", 
      "internal_ip": "192.168.179.252", 
      "key": "/Users/username/.vagrant.d/insecure_private_key", 
      "name": "fred", 
      "port": "2201", 
      "public_dns_name": 
      "127.0.0.1", 
      "public_ip": "127.0.0.1", 
      "status": "running", 
      "username": "vagrant", 
      "vagrant_name": "fred1"
    }
  ]
}

Status

Subcommand invocation

ansible -m vagrant -a "command=status vm_name=fred"

reports back with a dictionary of vm_names (only one in the case) with an array of status strings:

{
  "changed": false, 
  "status": {
    "fred": [
       "running", 
       "running"
     ]
   }
 }

if we don't specify a vm_name, we get the status of all instances:

{
  "changed": false, 
  "status": {
    "ansible": ["running"], 
    "fred": ["running", "running"]
  }
}

Config

Subcommand invocation for config data is similar ot status, but with much values returned:

ansible -m vagrant -a "command=config vm_name=fred"

reports back with a dictionary of vm_names (only one in the case) with an array of dicts about the SSH configuration of the hosts:

{
 "changed": false, 
 "config": {
   "fred": [
     {
       "Host": "fred0", 
       "HostName": "127.0.0.1", 
       "IdentitiesOnly": "yes", 
       "IdentityFile": "/Users/username/.vagrant.d/insecure_private_key", 
       "PasswordAuthentication": "no", 
       "Port": "2200", 
       "StrictHostKeyChecking": "no", 
       "User": "vagrant", 
       "UserKnownHostsFile": "/dev/null"
     }, 
     {
       "Host": "fred1", 
       "HostName": "127.0.0.1", 
       "IdentitiesOnly": "yes", 
       "IdentityFile": "/Users/username/.vagrant.d/insecure_private_key", 
       "PasswordAuthentication": "no", 
       "Port": "2201", 
       "StrictHostKeyChecking": "no", 
       "User": "vagrant", 
       "UserKnownHostsFile": "/dev/null"
     }
   ]
 }
}

Halt

When halting an instance, ort set of isntances, as in

ansible -m vagrant -a "command=halt vm_name=fred"

report back the resulting status

{
  "changed": true, 
  "status": {
    "fred": [
       "poweroff", 
       "poweroff"
     ]
   }
}

.

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