Ansible

• Chef
• Puppet
• Salt
• Ansible

Inventory

mail.example.com

[webservers]
foo.example.com
bar.example.com

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

ansible.cfg

[defaults]
hostfile = plugins/inventory/ec2.py
hash_behaviour = merge

site.yaml

- hosts: tag_Role_app
  remote_user: ubuntu
  sudo: yes
  sudo_user: root
  roles:
    - { role: common,  tags: common  }
    - { role: erlang,  tags: erlang  }
    - { role: backend, tags: backend }
    - { role: battle,  tags: battle  }

role/tasks/main.yml

- name: Backend repository directory created
  file: path={{backend.dir}} state=directory
        owner={{backend.user}} group={{backend.user}}

- name: Backend repository up to date
  sudo: yes
  sudo_user: "{{backend.user}}"
  git: repo={{backend.git_repo}} version={{backend.git_version}}
       dest={{backend.dir}} accept_hostkey=yes
       key_file=/home/{{backend.user}}/.ssh/{{backend.key}}
  notify:
    - Release created
    - Backend restarted
    - Notify Slack that backend is updated

- name: Backend log directory created
  file: path=/var/log/{{app}} owner={{backend.user}} group={{backend.user}}
        state=directory

- name: Backend service is installed
  template: src=init_script dest=/etc/init.d/{{app}} mode=0755

- name: Backend configuration directory created
  file: path=/etc/{{app}} state=directory

- name: Backend configuration is set
  template: src=sys.config
            dest=/etc/{{app}}/sys.config
  notify: Backend restarted

.
├── Makefile
├── Vagrantfile
├── ansible.cfg
├── appservers.yml
├── ec2_create_environment.yml
├── ec2_security.yml
├── group_vars
│   └── all.yml
├── library
│   └── sshknownhosts/...
├── localhost
├── plugins
│   └── inventory/ec2.py
├── roles
│   ├── backend
│   │   ├── handlers/main.yml
│   │   ├── tasks/main.yml
│   │   ├── templates
│   │   │   └── ...
│   │   └── vars/main.yml
│   ├── battle
│   │   ├── tasks/main.yml
│   │   └── vars/main.yml
│   ├── common
│   │   ├── tasks/main.yml
│   │   └── vars/main.yml
│   └── erlang
│       ├── files/erlang-pin-999
│       └── tasks/main.yml
├── site.yml
└── vagrant
    ├── hosts
    └── provision.sh

21 directories, 29 files

$ ansible-playbook site.yml --tags erlang --limit tag_Env_development

PLAY [tag_Role_app] ***********************************************************

GATHERING FACTS ***************************************************************
ok: [54.77.52.128]

TASK: [erlang | Erlang repository added] **************************************
ok: [54.77.52.128]

TASK: [erlang | Erlang Solutions key added] ***********************************
skipping: [54.77.52.128]

TASK: [erlang | apt-cache is up to date] **************************************
skipping: [54.77.52.128]

TASK: [erlang | Erlang pinned to version and repository] **********************
changed: [54.77.52.128]

TASK: [erlang | Erlang installed] *********************************************
ok: [54.77.52.128] => (item=erlang-base,erlang-dev)

PLAY RECAP ********************************************************************
54.77.52.128               : ok=4    changed=1    unreachable=0    failed=0

$ ansible-playbook --tags erlang --limit tag_Env_development

$ ansible-playbook --tags battle --limit tag_Env_staging

$ ansible-playbook --limit tag_Name_staging-app-02

$ ansible-playbook ec2_create_environment.yml --inventory=localhost --extra-vars="env=prototype"

$ ansible-playbook -i vagrant/hosts site.yml --limit tag_Env_development --tags battle

• apt - Manages apt-packages
• authorized_key - Adds or removes an SSH authorized key
• cron - Manage cron.d and crontab entries.
• datadog_event - Posts events to DataDog service
• docker - manage docker containers
• ec2 - create, terminate, start or stop an instance in ec2, return instanceid
• ec2_elb_lb - Creates or destroys Amazon ELB.
• gem - Manage Ruby gems
• git - Deploy software (or files) from git checkouts
• irc - Send a message to an IRC channel

• librato_annotation - create an annotation in librato
• mysql_db - Add or remove MySQL databases from a remote host.
• nagios - Perform common tasks in Nagios related to downtime and notifications.
• newrelic_deployment - Notify newrelic about app deployments
• pagerduty - Create PagerDuty maintenance windows
• pingdom - Pause/unpause Pingdom alerts
• redis - Various redis commands, slave and flush
• riak - This module handles some common Riak operations

• s3 - S3 module putting a file into S3.
• service - Manage services.
• shell - Execute commands in nodes.
• slack - Send Slack notifications
• sns - Send Amazon Simple Notification Service (SNS) messages
• user - Manage user accounts
• wait_for - Waits for a condition before continuing.
• zfs - Manage zfs

API

$ tower-cli job launch --format human --monitor --job-template 38