Set up directory structure and a common role as well as a developer-machine role

roles/common/tasks/main.yml

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+---
+# This playbook contains plays that will run on all nodes
+
+- name: Update apt
+  apt: update_cache=yes
+
+- name: Upgrade APT to the lastest packages
+  apt: upgrade=safe
+
+- name: Install htop
+  apt: name=htop state=present
+
+- name: Install curl
+  apt: name=curl state=present
+
+- name: Install openssh-server
+  apt: name=openssh-server state=present
+
+- name: Install git
+  apt: name=git state=present
+
+- name: Install rsync
+  apt: name=rsync state=present
+
+- name: Install zip
+  apt: name=zip state=present
+
+- name: Install unzip
+  apt: name=unzip state=present
+
+- name: Install fail2ban
+  apt: name=fail2ban state=present
+
+- name: Install ntp
+  apt: name=ntp state=present
+
+- name: Install mysql-client
+  apt: name=mysql-client state=present
+
+- name: Install wget
+  apt: name=wget state=present
+
+- name: Set git username
+  shell: git config --global user.name "Jacob Cody Wimer"
+
+- name: Set git email
+  shell: git config --global user.email "jacob.wimer@gmail.com"
+
+- name: Is docker installed
+  shell: which docker
+  register: docker_installed
+
+- name: Get docker
+  shell: curl -sSL https://get.docker.com/ | sh
+  when: docker_install is none
+
+- name: Get docker compose
+  shell: curl -L https://github.com/docker/compose/releases/download/1.5.0/docker-compose-`uname -s`-`uname -m` > /usr/local/bin/docker-compose  
+  when: docker_install is none
+
+- name: Link docker compose
+  shell: chmod +x /usr/local/bin/docker-compose
+  when: docker_install is none
+
+- name: Set timezone to NewYork
+  shell: timedatectl set-timezone America/New_York
+
+- name: test for swap partition
+  shell: swapon -s | grep -E "^/"
+  register: swapfile
+  ignore_errors: yes
+
+- name: create swapfile
+  when: swapfile|failed
+  shell: fallocate -l 4G /swapfile 
+
+- name: set swapfile permissions
+  when: swapfile|failed
+  file: path=/swapfile
+        owner=root
+        group=root
+        mode=0600
+
+- name: prepare swapfile
+  when: swapfile|failed
+  shell: mkswap /swapfile
+
+- name: enable swap
+  when: swapfile|failed
+  shell: swapon /swapfile
+
+- name: add swapfile
+  when: swapfile|failed
+  lineinfile: dest=/etc/fstab
+              regexp="^/swapfile"
+              state=present
+              line="/swapfile       none    swap    sw      0       0"
+
+- name: set swappiness (temporarily)
+  when: swapfile|failed
+  shell: echo 10 | tee /proc/sys/vm/swappiness
+
+- name: set swappiness (permanent)
+  when: swapfile|failed
+  lineinfile: dest=/etc/sysctl.conf
+              regexp="^vm.swappiness"
+              state=present
+              line="vm.swappiness = 10"
+
+- name: set cache pressure (temporarily)
+  when: swapfile|failed
+  shell: echo 50 | tee /proc/sys/vm/vfs_cache_pressure
+
+- name: set cache pressure (permanent)
+  when: swapfile|failed
+  lineinfile: dest=/etc/sysctl.conf
+              regexp="^vm.vfs_cache_pressure"
+              state=present
+              line="vm.swappiness = 50"