Ability to create Jenkins worker AMIs via packer.

playbooks/roles/jenkins_worker/defaults/main.yml

@@ -29,3 +29,6 @@ jenkins_ruby_version: "1.9.3-p374"
 # JSCover direct download URL
 jscover_url: "http://files.edx.org/testeng/JSCover-1.0.2.zip"
 jscover_version: "1.0.2"
+
+# packer direct download URL
+packer_url: "https://dl.bintray.com/mitchellh/packer/0.6.1_linux_amd64.zip"

playbooks/roles/jenkins_worker/tasks/main.yml

@@ -8,6 +8,7 @@
 #   `jenkins_home`: /var/lib/jenkins
 #   `jenkins_user_home`: /home/jenkins
 
+- include: packer.yml
 - include: system.yml
 - include: python.yml
 - include: ruby.yml

playbooks/roles/jenkins_worker/tasks/packer.yml

+---
+- name: Download packer
+  get_url: url={{ packer_url }} dest=/var/tmp/packer.zip
+
+- name: Unzip packer
+  unarchive: src=/var/tmp/packer.zip dest=/usr/local/bin copy=no

util/packer/jenkins_worker.json

+{
+  "variables": {
+    "aws_access_key": "{{env `AWS_ACCESS_KEY_ID`}}",
+    "aws_secret_key": "{{env `AWS_SECRET_ACCESS_KEY`}}",
+    "github_oauth_token": "{{env `GITHUB_TOKEN`}}",
+    "playbook_remote_dir": "/tmp/packer-edx-playbooks",
+    "ami": "{{env `JENKINS_WORKER_AMI`}}",
+  },
+  "builders": [{
+    "type": "amazon-ebs",
+    "access_key": "{{user `aws_access_key`}}",
+    "secret_key": "{{user `aws_secret_key`}}",
+    "region": "us-east-1",
+    "source_ami": "{{user `ami`}}",
+    "instance_type": "m3.large",
+    "ssh_username": "ubuntu",
+    "ami_name": "jenkins_worker-{{isotime | clean_ami_name}}"
+  }],
+  "provisioners": [{
+    "type": "shell",
+    "inline": ["rm -rf {{user `playbook_remote_dir`}}"]
+  }, {
+    "type": "file",
+    "source": "../../../configuration/playbooks",
+    "destination": "{{user `playbook_remote_dir`}}"
+  }, {
+    "type": "file",
+    "source": "../../../configuration/requirements.txt",
+    "destination": "{{user `playbook_remote_dir`}}/requirements.txt"
+  },
+  {
+    "type": "shell",
+    "inline": ["cd {{user `playbook_remote_dir`}}",
+      "virtualenv packer-venv",
+      ". packer-venv/bin/activate",
+      "pip install -q -r requirements.txt",
+      "echo '[jenkins_worker]' >> inventory.ini",
+      "echo 'localhost' >> inventory.ini",
+      "ansible-playbook edx-east/jenkins_worker.yml -i inventory.ini -c local -e 'github_oauth_token={{user `github_oauth_token` }}' -vvvv"]
+  }, {
+    "type": "shell",
+    "inline": ["echo placeholderfortests"]
+  }]
+}