Commit initial set of files for creating Swarm on Ubuntu with Ansible

Commit initial set of files to creating a Docker Swarm cluster (in Swarm mode) using Ubuntu and Ansible. Environment is currently not functional (Ansible/SSH won't correctly authenticate against the hosts).

Signed-off-by: Scott Lowe <scott.lowe@scottlowe.org>

docker/ubuntu-swarm-mode/Vagrantfile

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+# -*- mode: ruby -*-
+# vi: set ft=ruby :
+
+# Specify minimum Vagrant version and Vagrant API version
+Vagrant.require_version '>= 1.6.0'
+VAGRANTFILE_API_VERSION = '2'
+
+# Require 'yaml' module
+require 'yaml'
+
+# Read YAML file with VM details (box, CPU, RAM, IP addresses)
+# Edit machines.yml to change VM configuration details
+machines = YAML.load_file(File.join(File.dirname(__FILE__), 'machines.yml'))
+
+# Create and configure the VMs
+Vagrant.configure(VAGRANTFILE_API_VERSION) do |config|
+
+  # Always use Vagrant's default insecure key
+  config.ssh.insert_key = false
+
+  # Iterate through entries in YAML file to create VMs
+  machines.each do |machine|
+
+    # Configure the VMs per details in machines.yml
+    config.vm.define machine['name'] do |srv|
+
+      # Don't check for box updates
+      srv.vm.box_check_update = false
+
+      # Specify the hostname of the VM
+      srv.vm.hostname = machine['name']
+
+      # Specify the Vagrant box to use (use VMware box by default)
+      srv.vm.box = machine['box']['vmw']
+
+      # Configure default synced folder (disable by default)
+      if machine['sync_disabled'] != nil
+        srv.vm.synced_folder '.', '/vagrant', disabled: machine['sync_disabled']
+      else
+        srv.vm.synced_folder '.', '/vagrant', disabled: true
+      end #if machine['sync_disabled']
+
+      # Iterate through networks as per settings in machines.yml
+      machine['nics'].each do |net|
+        if net['ip_addr'] == 'dhcp'
+          srv.vm.network net['type'], type: net['ip_addr']
+        else
+          srv.vm.network net['type'], ip: net['ip_addr']
+        end # if net['ip_addr']
+      end # machine['nics'].each
+
+      # Configure CPU & RAM per settings in machines.yml (Fusion)
+      srv.vm.provider 'vmware_fusion' do |vmw|
+        vmw.vmx['memsize'] = machine['ram']
+        vmw.vmx['numvcpus'] = machine['vcpu']
+        if machine['nested'] == true
+          vmw.vmx['vhv.enable'] = 'TRUE'
+        end #if machine['nested']
+      end # srv.vm.provider 'vmware_fusion'
+
+      # Configure CPU & RAM per settings in machines.yml (VirtualBox)
+      srv.vm.provider 'virtualbox' do |vb, override|
+        vb.memory = machine['ram']
+        vb.cpus = machine['vcpu']
+        override.vm.box = machine['box']['vb']
+      end # srv.vm.provider 'virtualbox'
+    end # config.vm.define
+
+    # Run simple Ansible playbook
+    config.vm.provision 'ansible' do |ansible|
+      ansible.playbook = 'provision.yml'
+    end # config.vm.provision
+  end # machines.each
+end # Vagrant.configure

docker/ubuntu-swarm-mode/ansible.cfg

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+[defaults]
+inventory = .vagrant/provisioners/ansible/inventory/vagrant_ansible_inventory
+private_key_file = ~/.vagrant.d/insecure_private_key
+remote_user = vagrant
+host_key_checking = false
+
+[ssh_connection]
+ssh_args = -o IdentityFile=/home/slowe/.vagrant.d/insecure_private_key -o PubKeyAuthentication=yes -o ControlMaster=auto -o ControlPersist=60s -o ControlPath=~/.ansible/cp/ansible-ssh-%h-%p-%r

docker/ubuntu-swarm-mode/create-swarm.yml

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+---
+- hosts: "all"
+  become: "yes"
+  remote_user: "vagrant"
+
+  tasks:
+  - name: "Install Pip"
+    package:
+      name: "python-pip"
+      state: "present"
+
+  - name: "Install some Python modules"
+    pip:
+      name: "{{ item }}"
+      state: "present"
+    with_items:
+      - "urllib3"
+      - "pyopenssl"
+      - "ndg-httpsclient"
+      - "pyasn1"
+
+  - name: "Install Docker APT Key"
+    apt_key:
+      url: "https://download.docker.com/linux/ubuntu/gpg"
+      state: "present"
+
+  - name: "Add Docker repository"
+    apt_repository:
+      repo: "deb [arch=amd64] https://download.docker.com/linux/ubuntu trusty stable"
+      state: "present"
+      update_cache: "yes"
+
+  - name: "Install Docker CE"
+    package:
+      name: "docker-ce"
+      state: "present"
+
+  - name: "Add user to Docker group"
+    user:
+      name: "{{ ansible_ssh_user }}"
+      group: "docker"
+      append: "yes"
+
+  - name: "Initialize Docker Swarm from manager"
+    command: "docker swarm init --advertise-addr {{ ansible_default_ipv4.address }}"
+    when: "ansible.hostname == manager"
+
+  - name: "Register Swarm join token"
+    command: "docker swarm join-token -q worker"
+    register: swarm_token
+    when: "ansible.hostname == manager"
+
+  - name: "Establish Swarm join token as a host fact"
+    set_fact: swarmtoken="{{ swarm_token.stdout }}"
+    when: "ansible.hostname == manager"
+
+  - name: "Join worker nodes to Swarm cluster"
+    command: "docker swarm join --advertise-addr {{ ansible_default_ipv4.address }} --token {{ hostvars[groups['tag_role_manager'][0]].swarmtoken }} {{ hostvars[groups['tag_role_manager'][0]].ansible_default_ipv4.address }}:2377"
+    when: "ansible.hostname != manager"

docker/ubuntu-swarm-mode/destroy-swarm.yml

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+---
+- hosts: "all"
+  become: "yes"
+  remote_user: "vagrant"
+
+  tasks:
+  - name: "Leave Swarm cluster"
+    command: "docker swarm leave --force"

docker/ubuntu-swarm-mode/machines.yml

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+---
+- box:
+    vmw: "bento/ubuntu-14.04"
+    vb: "ubuntu/trusty64"
+  name: "manager"
+  nics:
+    - type: "private_network"
+      ip_addr: "192.168.100.100"
+  ram: "512"
+  vcpu: "1"
+- box:
+    vmw: "bento/ubuntu-14.04"
+    vb: "ubuntu/trusty64"
+  name: "worker-01"
+  nics:
+    - type: "private_network"
+      ip_addr: "192.168.100.101"
+  ram: "512"
+  vcpu: "1"
+- box:
+    vmw: "bento/ubuntu-14.04"
+    vb: "ubuntu/trusty64"
+  name: "worker-02"
+  nics:
+    - type: "private_network"
+      ip_addr: "192.168.100.102"
+  ram: "512"
+  vcpu: "1"
+- box:
+    vmw: "bento/ubuntu-14.04"
+    vb: "ubuntu/trusty64"
+  name: "worker-03"
+  nics:
+    - type: "private_network"
+      ip_addr: "192.168.100.103"
+  ram: "512"
+  vcpu: "1"
+- box:
+    vmw: "bento/ubuntu-14.04"
+    vb: "ubuntu/trusty64"
+  name: "worker-04"
+  nics:
+    - type: "private_network"
+      ip_addr: "192.168.100.104"
+  ram: "512"
+  vcpu: "1"

docker/ubuntu-swarm-mode/provision.yml

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+---
+- hosts: "all"
+  become: "yes"
+  remote_user: "vagrant"
+
+  tasks:
+  - name: "Install Pip"
+    package:
+      name: "python-pip"
+      state: "present"