EUC 2013 - Erlang in a *NIX World

ERLANG IN A *NIX WORLDHow to get Erlang to Integrate With Your Environment

Wednesday, June 12, 13

Meta GoalsMake it easy to integrate into a standard unix environment

Make it easy to integrate into a continuous deployment system

Remove the need for a custom tool chain for Erlang


Goals

How to build releases with Relx

How to integrate those releases under your system management tools

How to build native packages (rpms, debs, etc for your releases)


Tools We Will UseRelx - Release Building

http://relx.org

Erlnixify - Erlang Node Shim

http://erlware.github.io/erlnixify/

Fpm - Native Package Creation Tool

https://github.com/jordansissel/fpm




Basic EnvironmentA Unix Environment (either in a VM or native on your laptop)

Erlang

Ruby 1.9.3 (yea, yea)

Git


Installing DependenciesInstall Gems -

gem install erlnixify

gem install fpm

Download the code

https://github.com/ericbmerritt/EUC2013




Relx - Creating A ReleaseA tool to build releases

Convention over configuration

Absolutely minimal configuration

Talk tomorrow that will go into more detail


Relx - Creating A Release>relx Starting relx build process ...Resolving OTP Applications from directories: /Users/emerrit/workspace/EUC2013/echo_get/ebin /Users/emerrit/workspace/EUC2013/echo_get/deps /usr/local/Cellar/erlang/R16B/lib/erlang/lib

Resolving available releases from directories: /Users/emerrit/workspace/EUC2013/echo_get/ebin /Users/emerrit/workspace/EUC2013/echo_get/deps /usr/local/Cellar/erlang/R16B/lib/erlang/lib

Resolved echo_get-0.0.1release successfully created!


Erlnixify - Running ReleaseA simple ruby app

Traps Unix Signals and propagates them to the running Release in an OTPish way

Monitors the running Release and crashes if the Release crashes


FPM - Trivial Package BuildingCan build packages most platforms (rpms, debs)

Can build packages based an a directory layout

Can have before/after scripts etc


Running FPM> relx> mkdir -p _dist/opt/echo_get> mkdir -p _dist/etc/init.d> cp -r _rel _dist/opt/echo_get> cp ./bin/ _dist/etc/init.d> cd _dist> fpm -s dir -t rpm -d esl-erlang -n echo_get -v 0.0.1 \ --rpm-rpmbuild-define '__prelink_undo_cmd %{nil}' \ ./


Running FPM - Makefilerelease: compile @rm -rf $(DISTDIR) $(REL) @$(REBAR) skip_deps=true release rm -rf $(DISTDIR)/opt mkdir -p $(DISTDIR)/opt mkdir -p $(DISTDIR)/etc/init.d mkdir -p $(DISTDIR)/etc/apollo mkdir -p $(DISTDIR)/var/log/apollo cp -r rel $(DISTDIR)/opt/apollo cp -r $(CURDIR)/etc/* $(DISTDIR)/etc/

rpm: release $(eval $@_NAME := $(shell atbx print-git-vsn | cut -d "," -f 1)) $(eval $@_VSN := $(shell atbx print-git-vsn | cut -d "," -f 2)) cd $(DISTDIR); fpm -s dir -t rpm -d esl-erlang -n $($@_NAME) -v $($@_VSN) \ --before-remove ../bin/before-remove \ --rpm-rpmbuild-define '__prelink_undo_cmd %{nil}' \ ./


Taking Things a Step Further

Continuous Integration (Jenkins, etc)

Inotify - http://inotify.aiken.cz

Ansible, Puppet or Chef


August 30th - 31st

http://erlangcamp.com




October 11th - 12th





EUC 2013 - Erlang in a *NIX World

Technology

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