Salty Servers Taste Better

Transcript

1. Salty Servers Taste Better Sebastian Vetter @elbaschid github.com/elbaschid
2. Who am I? • I work for Tangent Snowball • I love Python & Django • I passionate about CI & CD • I hate doing things by hand
3. Disclaimer • I am not a DevOp • I don't know much about puppet/chef • This presentation might suck ;)
4. Who has heard about saltstack?
5. Why am I talking about salt? Because • it is awesome! • it is magic! • I love automation! • it is awesome!
6. What I'll be talking about today • The basics of salt ... • ... and how to use it everywhere
7. Check out this freshly squeezed talk
8. Two Types of Servers
9. 4 Major Parts • Modules • Grains • Salt states • Pillar
10. Modules • remote execution • administration from master • run on selected minions
11. Grains provide • hostname • OS details • roles of the host
12. Grains example {{ grains['oscodename'] }}
13. Salt states define • installed packages • managed files • running services • ... and more ...
14. Salt state examples redis: pkg.installed: - name: redis-server service.running: - name: redis-server - enable: True - require: - pkg: redis
15. Pillars • define sensitive data • are selective distribution • can be used in
16. Pillar example database: prefixes: - dev - test
17. Get Pillar data {{ salt['pillar.get']('database:prefixes:dev', None) }}
18. The master configuration # define the salt state director(y|ies) file_roots: base: - /srv/salt # define the pillar director(y|ies) pillar_roots: base: - /srv/salt
19. The minion configuration master: 127.0.0.1
20. /srv/salt/top.sls • main entry point • one each for pillar and salt • must be in pillar/salt roots
21. An example base: '*': - core - python - ssh - iptables 'coolsite-*': - nginx - supervisor - virtualen 'os:Windows': - destroy
22. Here comes the magic $ salt '*' state.highstate
23. What else can you do • share states through gitfs • handle your cloud with salt-cloud • provision vagrant or docker
24. Thanks for listening Got Questions?