Automating your infrastructure using configuration management tools

1. Infrastructure Engineering
Bryan McLellan
http:// loftninjas.org
btm@loftninjas.org
Systems Administrator
Widemile

2. Landing Page Optimization (LPO) or
Proprietary Testing, Optimization and
Predictive Analytics Technology
(smart people)
Partner Program (Recently Launched) Full Service Clients

3. The secret goal of an SA
Never having to say you’re sorry…
Or never having to do something twice
Once is a problem worth solving
Twice and you’re a monkey
Objective:
Systems/Network engineering position that will
capitalize on my adaptive technical skills to provide
scalable solutions to unique problems
http://www.flickr.com/photos/junewess/2111679056/

4. Chaining Tools & Frameworks
Puppet, Facter, Capistrano & iClassify
(Open Source Software)
http://xkcd.com/444/

5. Automation
Building Systems Virtualization
•
Installing the OS PXE Boot
•
Installing software Package management
•
Configuring Software Puppet
•
Maintenance iClassify
•
Monitoring Capistrano
•
Documentation Nagios/Munin
•
Disaster Recovery
•

6. Life at Widemile
Build a new server
cap -S recipe=vmware
-S host=vmware06
-S hostname=quot;syslog01.prod.widemile.comquot;
-S network=prod
build
1. Capistrano recipe (ruby)
2. Builds a vmware vmx config file including virtual network interfaces (erb)
3. Creates virtual disk
4. Grabs generated MAC address, feeds it to the tftp server.
5. Starts VM
6. VM PXE boots, installs debian automatically (preseed)
7. Grabs IP address from DHCP logs so you know where to ssh in 10 minutes

7. Life at Widemile
Puppify
cap -S recipe=debian_client
-S client=syslog01
-S master=prod-ops01
build
1. Capistrano recipe (ruby)
2. Configures sources.list and bits needed to get the truck rolling
3. Installs puppet/facter/icagent (iClassify)
4. Generates and signs puppet keys
5. Runs puppet

8. Life at Widemile
Tagging:

9. Life at Widemile
Go for a bike ride and enjoy refreshing beverages in the park
http://www.flickr.com/photos/mattw/2655550820/

10. facter
Rubys scripts collect data, “facts” are available as iClassify attributes and puppet variables

11. puppet

12. munin
28 lines without comments, 241 lines without comments once deployed

13. http://loftninjas.org
“Parallel to the ‘Developer’ tribe in most organizations, often with a semi-antagonistic
mutual dependence, there was always another tribe: ‘Sysadmin’. When Developers
and Sysadmins got together, it sometimes felt like the dwarfs and high elves forced to
work together by necessity. (I’ll let you workout which is which.)”
http://stochasticresonance.wordpress.com