Forming the Cloud

Presentation on how to use the cloud for software delivery and how to use infrastructure as code.

Transcript

1. FORMING THE CLOUD
2. HELLO! I am Lark Mullins DevOps Engineer | Apiture @larkmullins 2
6. 6 CLICK CLICK CLICK CLICK CLICK CLICK CLICK CLICK CLICK CLICK CLICK CLICK CLICK CLICK CLICK CLICK CLICK CLICK CLICK CLICK CLICK CLICK CLICK CLICK CLICK CLICK CLICK CLICK CLICK CLICK
7. 7 THIS IS NOT REPEATABLE
8. 8 CHAOS!
9. “ 9 Human sacrifice, dogs and cats living together, mass hysteria! - Dr. Venkman, Ghostbusters
10. INFRASTRUCTURE AS CODE Bringing order to the chaos 1 10
11. 11 WHAT IS INFRASTRUCTURE AS CODE? Applying software engineering tools and practices to infrastructure
12. 12 MUTABLE INFRASTRUCTURE VS. IMMUTABLE INFRASTRUCTURE
13. PETS vs. CATTLE 13
14. MUTABLE INFRASTRUCTURE ◉ No need to worry about saving data/state ◉ Do not need to take down resource to update/patch ◉ Known entity, IT/Ops has history with this resource 14
15. MUTABLE INFRASTRUCTURE TRADE-OFFS ◉ Introduction of risks ◉ Validation of changes harder ◉ Temptation to manually “fix” or “install” or “update” ◉ Configuration drift ◉ Sometimes not repeatable 15
16. IMMUTABLE INFRASTRUCTURE ◉ Repeatable ◉ Avoids drift in configuration settings ◉ Easier to add new servers ◉ Commonality ◉ Rollback is easier 16
17. IMMUTABLE INFRASTRUCTURE TRADE-OFFS ◉ What if the application is stateful? ◉ Not suitable for large changesets ◉ Linear scale of the infrastructure, scale out not up 17
18. TOOLS OF THE TRADE Hammer, nails, and chainsaws 2 18
19. CONFIGURATION MANAGEMENT Chef A tool written in Ruby and Erlang. It uses a pure Ruby, DSL to write “recipes” for configuring and maintaining a company’s servers Puppet Written in C++, Clojure, and Ruby. Provides its own declarative language for configuring and maintaining servers Ansible Written in mainly Python, it is provides provisioning, configuration management, application deployment capabilities 19
20. INFRASTRUCTURE AS CODE CloudFormation An infrastructure as code tool developed by AWS. Configuration files can be written in either JSON or YAML. Only supports AWS cloud provider. Terraform Developed by Hashicorp, it is an infrastructure as code tool written in Golang. It provides its own DSL, HCL (Hashicorp Configuration Language). Supports the major cloud providers as well as some on-premises cloud systems. 20
21. NEW KIDS IN THE CLOUD CDK (Cloud Development Kit) An open source software development framework to model and provision your cloud application resources using familiar programming languages Pulumi Enables developers to write code in their favorite language (e.g., JavaScript, Python, Go), deploying cloud apps and infrastructure easily, without the need to learn specialized DSLs or YAML templating solutions. 21
22. DEMO 22 Terraform & Cloudformation https://github.com/wilmingtoncloud/forming-the-cloud
23. Pros ◉ Supports multiple cloud providers ◉ Supports shareable modules ◉ Remote storage of statefiles TERRAFORM PROS/CONS Cons ◉ Cloud agnostic is not 100% true ◉ Requires statefiles 23
24. Pros ◉ Highly integrated with AWS ◉ Usually gets new AWS resources/services added quickly ◉ AWS is source of truth CLOUDFORMATION PROS/CONS Cons ◉ Only supports AWS ◉ Does not provide a plan stage only changesets ◉ No shareable modules 24
25. “ The enabling idea of infrastructure as code is that the systems and devices which are used to run software can be treated as if they, themselves, are software. - - Kief Morris, author Infrastructure as Code: Managing Servers in the Cloud 25
26. THANKS! Any questions? You can find me at Twitter: @larkmullins / Github: larkmullins 26