DevOps

What is DevOps?

DevOps >= Dev + Operations

Terms and Technologies

Area	Software
Provisioning	Kickstart / Cobbler, spacewalker, FAI, OpenQRM, Vagrant + Provisioners (Chef Solo, Puppet, Ansible, Shell), Packer
Application Deployment	Capistrano (Ruby), Fabric (Python)
Configuration Management	cfengine, Puppet, Chef (Infra as Code), bcfg2, cdist, sunzi
Parallel (Distributed \| Remote) Execution	func, salt, MCollective, pssh, shmux, ansible

Configuration Management and Automation

Chef / Chef Solo - Infrastructure as Code

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NOTE: cookbooks, recipes, knife (CLI tool), knife solo (github), kitchen (cookbooks repository), Berkshelf to manage cookbooks (like bundler for gems)...

Pupplet / Puppet (Masterless) + MCollective

Sunzi - Sunzi is the easiest server provisioning utility (shell scripts) designed for mere mortals. If Chef or Puppet is driving you nuts, try Sunzi!

Saltstack - Salt

Development / Production Environment

Vagrant

Vagrant + Chef Solo / Ansible / Shell / Puppet (master-less)
Veewee - Automate the building of Vagrant Base Boxes by creating definitions (shell scripts basically)

Packer - a tool for creating identical machine images for multiple platforms from a single source configuration

LXC - Linux Containers

Docker - LXC (Linux Container) Engine

CoreOS (Linux Kernel + systemd + LXC)

Continous Integration - CI

Jenkins (AKA Hudson)

travis-ci

Maven (Java)

Continous Deployment

Capistrano (Ruby)
Mina (Ruby)
Fabric (Python)

Workflow Automation

Rundeck

Automated Recovery

DRBD - Distributed Replicated Block Device

ZFS - Snapshots and Clones

Btrfs - Snapshots

Configure, Deploy, Ad Hoc Tasks, Parallel Execution

Ansible (Python)
Configure, Deploy, Ad Hoc tasks.
Fabric
Fabric is a Python (2.5 or higher) library and command-line tool for streamlining the use of SSH for application deployment or systems administration tasks.
cdist (shell)
Configuration management
Capistrano (Ruby)
Capistrano is a utility and framework for executing commands in parallel on multiple remote machines, via SSH. It uses a simple DSL (borrowed in part from Rake) that allows you to define tasks, which may be applied to machines in certain roles. It also supports tunneling connections via some gateway machine to allow operations to be performed behind VPN's and firewalls. Capistrano was originally designed to simplify and automate deployment of web applications to distributed environments, and originally came bundled with a set of tasks designed for deploying Rails applications.
MCollective (core of Puppet's parallel / distributed remote execution)
Salt (Python)
Distributed / Parallel remote execution, configuration management, scale like nothing else (thanks to ZeroMQ)
func (Fedora Unified Network Controller)

Source Code Management - SCM

Git

Hosted services (SaaS): GitHub, BitBucket
Commercial solutions: github enterprise, Atlassian Stash
Free & Open Source solutions: GitLab (Ruby + Rails+ ~~gitolite~~ replaced by gitlab-shell since v5.0)

SVN / subversion

CVS (OLD school)

Source Code Browser / Search

OpenGrok

Scripting Languages (polyglot)

Shell (Bash) - Advanced Bash Scripting Guide

Ruby => RubyGems, RVM, rbenv, Web Development Frameworks (Sinatra, Rails) is OPTIONAL

Python (2.7.x)

JavaScript / JSON / node.js

IaaS - Infrastructure as a Service

AWS (EC2), Rack Space, Linode, Digital Ocean (KVM)

PaaS - Platform as a Service

Heroku, Engine Yard, Cloud Foundry (VMware)

Private Cloud

OpenStack

Apache CloudStack

Monitoring

Popular tools

Monit
Monitorix
StatsD (node.js)
Graphite (with gdash or Diamond)
zabbix
Nagios
Cacti
Munin
Ganglia
MTRG

Search/Indexing

elasticsearch

Application Performance Management - APM

New Relic

Server Density

Log Management

Graylog2
logstash
logster (generate metrics from log files)

Knowledge Management

Confluence

Gollum (GitHub)

Issue Tracker

JIRA

Redmine

Trac

Discussion

Discourse (Ruby on Rails)

Vanilla Forums (PHP)

Resource

DevOps Weekly

DevOps - Must Read list

Terry : DevOps