The document discusses different eras of software deployment: 1. The shared hosting era involved editing files, uploading, and refreshing the browser frequently with many issues. 2. The dedicated server era used Linux distros like Debian and involved more command line work like sudo and vim but still had restart issues. 3. The cloud era saw the rise of tools like Capistrano, Vlad, and Mina to automate deployments but restarts were still an issue. 4. No matter the era, issues with daemons not persisting through restarts and bugs were common. Solutions like init scripts, Passenger, and systemd helped but Runit provides even better service supervision and restart capabilities when

1. Deployment tales
OLEKSANDR SIMONOV

2. About Me
•Oleksandr Simonov
•Businessman/Software Engineer/DevOps
•13 years in IT
•8 years with Ruby
•Open Source contributor
•Github: @simonoff

3. Shared Hosting Era
Dedicated Server Era
Cloud Era
What is wrong in every Era?
?!

4. Shared Hosting Era
Apache

5. Shared Hosting Era
Apache
PERL/CGI

6. Shared Hosting Era
Apache
PERL/CGI
PHP

7. Shared Hosting Era
Apache
PERL/CGI
PHP
MySQL

9. Deployment Process
1. Edit File
2. Upload
3. Open browser
4.Say: F*CK
5. Close browser
6. GOTO 1

11. Dedicated Server Era
Debian/Red Hat

12. Dedicated Server Era
Debian/Red Hat
sudo

13. Dedicated Server Era
Debian/Red Hat
sudo
vim

14. Dedicated Server Era
Debian/Red Hat
sudo
vim
rm -rf /

16. Deployment Process
tar cvzf suppa.tar.gz suppa
scp suppa.tar.gz root@server.com:/
ssh root@server.com
tar xvzf /suppa.tar.gz /var/www/

18. Cloud Era
capistrano

19. Cloud Era
capistrano
vlad

20. Cloud Era
capistrano
vlad
mina

22. Cloud Era
capistrano
vlad
mina
ssh -> cd ..-> rails s production

23. Cloud Era

25. Every Era Wrong
There is no daemons
There is a lot crushes
There is a lot bugs
There is no persistence on restart

26. “Something went wrong”
–Nginx default page

27. Usual fix
init script
passenger

28. Better fix
daemon tools
runit
systemd

29. RUNIT
a UNIX init scheme with service
supervision

30. capistrano + runit

31. capistrano + runit
all parts are services
all parts will be restarted
all parts management without
root/sudo

32. capistrano-runit gems collection
puma
sidekiq
resque
rake

33. https://github.com/
capistrano-runit

34. QUESTIONS?