Why Open Source brings more value to business?

# Why Open Source brings more value to business?

## Or why you should publish your Puppet modules

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## $ whoami
<img src="bastelfreak2.jpg" alt="drawing" style="float: right;width: 400px;"/>

* Tim 'bastelfreak' Meusel

* Puppet Contributor since 2012

* Merging stuff on [Vox Pupuli](https://voxpupuli.org/) (Puppet Community) since 2015

* Vox Pupuli Project Management Committee member

* Senior IT Automation Consultant at [example42](https://example42.com/)

<a href='https://example42.com' alt='company website example42'><img src="logo-540x540-3.png" alt="drawing" style="position: fixed; bottom: 12px; left: 20px; width: 100px;"/></a>
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# What's this Vox Pupuli thingy?

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* lets have a look on the daily tasks a maintainer can do to keep modules in shape

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]
<a href='https://example42.com' alt='company website example42'><img src="logo-540x540-3.png" alt="drawing" style="position: fixed; bottom: 12px; left: 20px; width: 100px;"/></a>
.footnote[[@bastelsblog](https://twitter.com/bastelsblog) for [@voxpupuliorg](https://twitter.com/voxpupuliorg)]

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* 150 Puppet modules
* 43 Ruby Gems
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* Be helpful and polite to each other

]

<a href='https://example42.com' alt='company website example42'><img src="logo-540x540-3.png" alt="drawing" style="position: fixed; bottom: 12px; left: 20px; width: 100px;"/></a>
.footnote[[@bastelsblog](https://twitter.com/bastelsblog) for [@voxpupuliorg](https://twitter.com/voxpupuliorg)]

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## Vox Pupuli
### What?
]

* Be helpful and polite to each other

* Be open-minded to people and technology

]

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.left-column[
## Vox Pupuli
### What?
]

* Be helpful and polite to each other

* Be open-minded to people and technology

* Provide a home for orphaned Puppet modules

]

???

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.left-column[
## Vox Pupuli
### What?
]

* Be helpful and polite to each other

* Be open-minded to people and technology

* Provide a home for orphaned Puppet modules

* Unite lonely module and tooling authors to a collective

]

???

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.left-column[
## Vox Pupuli
### What?
]

* Be helpful and polite to each other

* Be open-minded to people and technology

* Provide a home for orphaned Puppet modules

* Unite lonely module and tooling authors to a collective

* Ensure continued development for our code
]

???

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## Vox Pupuli
### Who?
]

![img](contributors.svg)
]

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* 161 members in the GitHub org with merge access

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# How to design a good Puppet module?

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* You write your own component Puppet modules

* You also want to reuse Open Source component modules from others

]

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* a component module manages a component of the infrastructure
* a specific software
* like nginx or mysql
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## Module Design
### Status Quo
]

* You write your own component Puppet modules

* You also want to reuse Open Source component modules from others

* Many of your servers are very similar, but not identical
]

???

* all servers use your internal DNS resolver in /etc/resolv.conf
* except for the DNS server itself, which forwards to cloudflare

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## Module Design
### Status Quo
]

* You write your own component Puppet modules

* You also want to reuse Open Source component modules from others

* Many of your servers are very similar, but not identical

* Design requirement 1: Use internal and external component modules in parallel

* Design requirement 2: Assign those component modules to groups of servers
]

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## Module Design
### Status Quo
### Roles & Profiles
]

???

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## Module Design
### Status Quo
### Roles & Profiles
### Data vs Code
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* System administrators team A write Puppet code

* System administrators from team B provide ip addresses

* Product owner provide version numbers

]

???

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## Module Design
### Status Quo
### Roles & Profiles
### Data vs Code
]

* System administrators team A write Puppet code

* System administrators from team B provide ip addresses

* Product owner provide version numbers

* Secrets should come from a secret store like Hashicorp Vault
]

???

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.left-column[
## Module Design
### Status Quo
### Roles & Profiles
### Data vs Code
]

* System administrators team A write Puppet code

* System administrators from team B provide ip addresses

* Product owner provide version numbers

* Secrets should come from a secret store like Hashicorp Vault

* Design requirement 3: Separate data and code
]

???

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.left-column[
## Module Design
### Status Quo
### Roles & Profiles
### Data vs Code
]

???

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.left-column[
## Module Design
### Status Quo
### Roles & Profiles
### Data vs Code
]

* You might leak private information if you publish an existing internal module
]

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## Why Open Sourcing?
### Technical aspects
]

* This enforces a proper structure in your code
]

???

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.left-column[
## Why Open Sourcing?
### Technical aspects
]

* This enforces a proper structure in your code

* This ensures secrets are never added to it
]

???

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.left-column[
## Why Open Sourcing?
### Technical aspects
]

* This enforces a proper structure in your code

* This ensures secrets are never added to it

* Many companies still don't have internal CI

* There are free CI services for open source software!
]

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## Why Open Sourcing?
### Technical aspects
### Vox Pupuli
]

* Vox Pupuli has proper tooling to handle many modules

* Vox Pupuli maintains community guidelines and best practices

* Working in a collective enforces proper documentation and git commits

]

???

* It's important to document code (changes) properly
* new hires need to understand it
* this gets tricky if documentation is reviewed by a small group of people that work with you on a daily basis
* people that don't contribute to open source often have issue explaining code changes properly in git commits
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.left-column[
## Why Open Sourcing?
### Technical aspects
### Company advantages
]

* Companies that do open source work are recognized in the community

* Attract new hires through open source work

* Benefit from the knowledge and contributions within the community

* Benefit from the tooling within the community
]

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# Conclusion

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* You should publish your internal puppet modules

* Vox Pupuli is awesome, please contribute!

* We've great tooling to scale module handling

]

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* We've some open issues with collected ideas. We need feedback!
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* You should publish your internal puppet modules

* Vox Pupuli is awesome, please contribute!

* We've great tooling to scale module handling

* For feedback: `bastelfreak` on slack or [tim@bastelfreak.de](mailto:tim@bastelfreak.de)

### Thanks for your attention!
]

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* We've some open issues with collected ideas. We need feedback!