Managing Servers with Chef
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Transcript of Managing Servers with Chef
Using Chef to Manage Your
Server Environments
About Blend
DevOps
Combines disciplines of
software development / QA
with system administration
(Development / Operations)
Building/Deploying•Manually
• Build scripts
• “I want to tell this computer how it should be set up, and let it do the rest”
Chef•Client/Server system for managing
configuration
•Declarative Recipes define end state instead of construction process
• Idempotent - re-running script only causes changes to execute
No scripts - recipes•Cookbooks - modules for adding support for
software
•Recipes - contained by cookbooks, define server configuration, templates, etc
• Attributes - configurable variables consumed by recipes
•Recipes provide defaults, can be overridden by server, role, or environment
• Some generated automatically
•Data Bags - hold arbitrary configuration data
Parts and pieces•Chef Server - holds cookbooks and
configuration for your organization
•Chef Client - installed on servers via bootstrap process to execute recipes, solo and client flavors
•Ohai - discovery utility that extracts automatic attributes from servers
• Knife - command line tool for managing chef
Managing/Orchestration•Chef Solo - One server, no management,
cookbooks go on server
•Hosted Chef - Opscode-provided server, fine-grained permission controls
•Chef Server - Self-hosted chef management server
•Chef supports git, but git repo and servers don’t talk
Development cycle•Create cookbook
•Develop/Test
•Upload recipe to chef server
• Execute on client servers
Blend Server Layout/Sites
.conf - all apache vhost configs symlink here
[sitename]
conf - apache and other configs
htdocs - web app, usually apache root dir
logs - apache and other logs
deploy - deploy scripts
Development tools• Berkshelf - code gen and dependency
management
• Vagrant - automated testing environments
Linkses•Chef - community.opscode.com
• Berkshelf - berkshelf.com
• Vagrant - vagrantup.com
• Epic Tutorial - vialstudios.com/guide-authoring-cookbooks.html
Questions?Joe Kepley
Blend Interactive
http://blendinteractive.comhttp://github.com/blendinteractive
http://joind.in/8102@joekepley