Luca Milanesio, co-founder of GerritForge, discusses the evolution of Gerrit from a simple monolithic deployment to a fully modular and extensible tool with over 1.1 million lines of code and numerous plugins. The focus is on simplifying Gerrit installation for enterprises using standard software management tools and Docker distribution, addressing challenges faced by the growing diverse user community. The introduction of a plugin manager and a centralized plugin repository (gerritcentral.com) is highlighted to streamline plugin discovery and installation.

1. Luca Milanesio
GerritForge
Luca@gerritforge.com
http://www.gerritforge.com
Twitter: @gitenterprise
Is Getting NATIVE

2. 2
About Luca
• Luca Milanesio
Co-founder of GerritForge
• over 20 years of experience
in Agile Development
SCM, CI and ALM worldwide
• Contributor to Jenkins
since 2007 (and previously Hudson)
• Git SCM mentor
for the Enterprise since 2009
• Contributor to Gerrit Code Review community since 2011

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About GerritForge
Founded in 2009 in London UK
Mission:
Integrate Gerrit with
the Enterprise

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Agenda
 Gerrit community is growing
 Why going native?
 Native binaries
 Docker distribution
 Installing a Gerrit plugin in 1 second!
 The Certified choice

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Gerrit 4 years ago
We could all fit in
medium class-room

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Gerrit in 2015
… something like this

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Gerrit at the beginning
 All-in-one monolithic WAR
 One file drop + init set-up
 Limited but simple configuration
 Mainly used by its developers / contributors
 Maven-based (very slow) build
 No plugins

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Gerrit today in numbers
 Over 1.1M lines of code
 Fully modular and extensible
 Web, TTY, IntelliJ / Eclipse user interfaces
 56 plugins and growing
 Users have little knowledge of Gerrit internals
 BUCK-powered (super-cool and fast) build

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Hold on, WAR set-up
wizard is quite easy
WHY on earth do we
need another
packaging?

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General growth challenges
 Gerrit community gets diverse
 Non-java developers are using Gerrit
 Lower % of Gerrit users can understand and
change the source
 Companies may not have access to BUCK in their
build systems

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Enterprise challenges
 Gerrit managed by non-devs
 More general "tools Opts" rather than gurus
 Company standards in Software distribution and
updates
 Need of standard Enterprise Support tools

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Filling the gap
Step #1

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Let's install Gerrit as any other sw package
$ apt-get install gerrit
$ /etc/init.d/gerrit start
$ tail –f /var/log/gerrit/error_log
 Does not require Gerrit-specific skills
 Can be easily automated
 Can be controlled / integrated with standard Sw
management tools
 Packages can be signed and certified

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Filling the gap
Step #2

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What about Gerrit pre-installed?
$ docker pull gerritforge/gerrit-centos7
$ docker run –d -p 8080:8080 gerritforge/gerrit-centos7
Gerrit in a Docker container?
• "one-click" away from Amazon
Cloud
• Baseline for customized configs
• Allows smoother migration thanks
to versioned VMs

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When can I start using them?
Gerrit 2.10 and 2.11 distributed as
RPM, DEB and Docker

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Wow, how many people used them?
Docker pulls overall:
531 of CentOS 7-based
2,400 of Ubuntu-based
Native packages downloads/month:
189 RPMs
109 Debs downloads

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What about Gerrit configuration?
 RPMs and Debs contain a playground-style
config
 Still lots of Gerrit skills needed to configure /
customize it

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GerritForge certified distribution
 Template-based configuration for common
scenarios:
oActive Directory
oLDAP
oJira Integration and SSO
oIBM Rational Team Concert Integration
oGerrit with GitHub:Enterprise
o…

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One plugin to
manage them all
Step #3

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What about Gerrit plugins?
 Plugins aren't part of Gerrit WAR (apart from 6 core
plugins)
 Different plugins = different maintainers
 Plugins supported / compatible vs. Gerrit versions
 Different plugins = different build systems
(BUCK, Maven, Sbt)
 Plugins hosted on different repositories
(Gerrit-Review, GitHub, my-own-git.com, …)

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Plugin-Manager = the lord of the plugins
 Why don't we have only ONE plugin pre-installed?
o Discover new plugins
o Compatibility check: plugin Version vs. Gerrit
o One-click plugin install

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Discover and install plugins in 1 sec

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Introducing GerritCentral.com
 More plugins / Gerrit builds and compatibility
 Consistency during Gerrit migrations
 GerritForge-signed and verified build
 Built, loaded and smoke-tested
 Option to get Enterprise Support coverage

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26. Try it on-line (with scripting): http://gerrithub.io/login
Read the Gerrit book: http://gerrithub.io/book
Keep in touch: http://gitenterprise.me
Learn more about Gerrit with
20% OFF Book discount for
Gerrit User Summit 2014
Book PROMO-CODE: LGCRB20
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