1.
Dokku - Your Own Heroku
Oleksandr Simonov

2.
ABOUT ME
● Open Source projects: rubyzip, roo, amoeba, capistrano-runit
● Programming Languages: Ruby, JS, Go, Erlang, Perl, PHP,
Pascal, asm
● Operation Systems: MacOS, Gentoo, Arch, Ubuntu, Windows
● Terminal: iTerm2, urxvt
● Editor: vim, vscode
● Shell: zsh

3.
AGENDA
● Short history about application deployment
● Docker and containers revolution
● Development environment
● Why Dokku?
● Issues and recipes
● Questions

4.
DEPLOYMENT
Software deployment is all of the activities that
make a software system available for use

5.
Manual File
Upload
Very simple and monkey job
process via ftp, sftp, etc.

6.
Manual File
Upload
Very simple and monkey job
process via ftp, sftp, etc.

7.
Direct Edit ON
Server
Very simple and unstable
process

8.
Direct Edit ON
Server
Very simple and unstable
process

9.
Automated process
with manual run
Capistrano, vlad, mina, etc.

10.
Automated process
with manual run
Capistrano, vlad, mina, etc.

11.
Heroku
git push

12.
Heroku
git push

13.
Docker
Containerization revolution

14.
containerization
Containerization is a system of
intermodal freight transport
using intermodal containers

15.
Why Docker is so good?
Why I still need to talk about it in 2019?!

16.
Transport Cargo Pre 1960

17.
Transport Cargo Pre 1960 - Matrix from Hell

18.
Intermodal Shipping Container

19.
Somewhere…
junior dev talks to team lead…

20.
Development Environment
A development environment is a collection of procedures and tools
for developing, testing and debugging an application or program.

21.
Development
Environment
DEV
STAGING
PROD
DEV
STAGING
PROD
Code DB

22.
Local dev environment
max 5-10 minutes on start

23.
Staging environment
zero admin required

24.
Production Environment
Code must able to run everywhere within minimal time

25.
All main providers costs a
lot money!
In case of staging environment

26.
Dokku
Fast and simple alternative of any paid PaaS

27.
Why Dokku?!

28.
Small - 262 lines of code

29.
Your own PaaS - you can install it on any hardware/virtual server/etc

30.
Your own PaaS - you can install it on any hardware/virtual server/etc

31.
Deployment via git push

32.
Heroku compatible with Herokuish

33.
A lot of plugins which helps you

34.
Instant domains

35.
SSL by Let’s Encrypt

36.
Are there no issues?!

37.
NO!

38.
Common issues
● Limited access rules

39.
Common issues
● Limited access rules
● Unavailability to change docker options for database services

40.
Common issues
● Limited access rules
● Unavailability to change docker options for database services
● No tools for interconnection between apps

41.
Common issues
● Limited access rules
● Unavailability to change docker options for database services
● No tools for interconnection between apps
● No command line tools

42.
Common issues
● Limited access rules
● Unavailability to change docker options for database services
● No tools for interconnection between apps
● No command line tools
● No scalability to more than one host system

43.
Common issues
● Limited access rules
● Unavailability to change docker options for database services
● No tools for interconnection between apps
● No command line tools
● No scalability to more than one host system
● No wildcard domains support

44.
Docker options for DB

45.
Interconnection between containers

46.
Wildcard domains
● Simplify dokku generated nginx file via custom
nginx.conf.sigil in your root application folder
● Set the custom nginx virtual host config on host
system
● Forget about lets-encrypt plugin