Introduction to Hiera

PuppetCamp Amsterdam Introduction to Hiera http://www.puppetspecialist.nl

whoami

● Ger Apeldoorn– Freelancer

● Puppet Consultancy● Puppet trainer for NL via AmazicSoft

– AutiPlan VOF

Introduction to HieraPuppetCamp Amsterdam

whoami

What is Hiera?


What is Hiera?

Hierarchical Data store

an organizational structure

in which items are ranked

according to levels of

importance


Why Hiera?


● Smarthost setting

Use case


● Smarthost setting– Identical for all your hosts, except one.

Use case


● Smarthost setting– Identical for all your hosts, except one.– Oh... and a seperate smarthost for the DMZ

Use case

Hiera fixes.... all the things!


Start small.....


Expand from there...


But first....


● Use any fact– fqdn– domain– environment– operatingsystem– uptime_seconds

Determine your Hierarchy


● Smarthost setting– Identical for all your hosts, except one.– Oh... and a seperate smarthost for the DMZ

Use case

create_resources()demo

Hiera &Modules


Modules without data

● Easy to share● Easier to maintain● Enhanced flexibility● Puppet 3.x → Data bindings


Modules & Data

● Putting data in the modules file


Modules & Data

● Parameterized classes


Modules & Data

● Getting the data from Hiera


Modules & Data

● Using Data bindings from Puppet 3.x


Benefits of Hiera

● Dealing with exceptions● Easily share your modules● No more massive testing for minor

changes in data


How to start?

● Create hiera.yaml● Restart Puppet master● Start improving

Some dutch tutorials are available on http://puppetspecialist.nl

http://puppetspecialist.nl/

Any questions?


WWW: http://www.puppetspecialist.nl

Mail: [email protected]

Twitter: @gerapeldoorn

Thanks!


Bye!

Technology

Introduction to Hiera