Re:A developer goes to a DevOps conference
by chupy on Sunday September 29, 2019 @04:13AM
(#21105829)
> I don't think you ever "just need one", for me one is always two : staging (and ci, by extension ..) and production.
It's always at least two in production if you ever need it to be HA.
Re:A developer goes to a DevOps conference
by 1337shadow on Sunday September 29, 2019 @05:09AM
(#21105992)
Most project never get to the point where they need more than 99.9% which is perfectly feasible with a single server. Interesting remark nonetheless.
Re:A developer goes to a DevOps conference
by erik_seaberg on Sunday September 29, 2019 @07:36PM
(#21110366)
Prod needs n + 2 if you want to survive losing one (machine, datacenter, whatever) while you have one out for maintenance. Buying three when you need one is pretty expensive; buying seven when you need five isn't as big a deal.
Staging just needs n > 1 to test that sharding works at all.
Provisioning an EC2 instance or a dedicated server just has the same cost in terms of manhour: running some automation in deployment pipeline, is something that you'll have to setup and maintain.
Be it updating a docker-compose file over ssh with ansible or something else: you have to do it anyway. If you want to cut that cost perhaps try with a starter project from OpenShift or Heroku, but that will also have a bigger cost even than an EC2 instance, and you will still have to take time to ensure your deployment is properly automated, with automated backups as part of the process.