cloud_notes.md

Cloud Notes

• 12 Factor principles.

Principles of Chaos Engineering

• Principles of Chaos Engineering covers experimenting on a deployment/system to uncover systemic issues:
  • Define a measurable "steady state".
  • Expectation that "steady state" should continue in both control/test groups.
  • Introduce "real world" events (crashes, connectivity failures, infrastructure failures,...).
  • Disprove expectations.
• Confidence comes from extremes it takes to disprove the control vs test expectation,

ChaosMonkey

• See:
  • Gihub: chaosmonkey.
  • Netflix: OSS.
• Verify your stateless/statefull cloud application/infrastructure deployments resilience by randomly nuking nodes.

Docker/Kubernetes

Docker:

• Docker: Dockerfile reference.
• Github: garethr/multi-stage-build-example. See: Velocity: Advanced Docker image build patterns (Gareth Rushgrove, Docker).

Kubernetes:

• Kubernetes Basics.
• Kubernetes Deployment.
• Kubernetes Service.

AWS

ASW CLI

• AWS CLI docker.
• docker run --rm -it -v ~/.aws:/root/.aws amazon/aws-cli --color=on --profile=development-poweruser --region=us-east-1 ec2 describe-instances

Latest AMI's

AMI's are rapidly updated, so here are the commands to get back the latest Linux/Windows AMI paths, which can then be used to get the latest ID for a specific path:

# All latest Amazon Linux AMI's:
aws ssm get-parameters-by-path --path "/aws/service/ami-amazon-linux-latest" --region <region> --profile <profile>
# All latest Windows AMI's:
aws ssm get-parameters-by-path --path "/aws/service/ami-windows-latest" --region <region> --profile <profile>

SSM

• Run PowerShell command and log to CloudWatch:

  aws ssm send-command --instance-ids "<instance_id>" --profile <profile> --cloud-watch-output-config "CloudWatchLogGroupName=echotest,CloudWatchOutputEnabled=true" --document-name AWS-RunPowerShellScript --parameters commands="echo Hello World"

INVESTIGATE

Link dump of things I need to INVESTIGATE or document further:

• GCloud: Pusing Docker images.
• GCloud: JSON Key Authentication.
• GCloud: Configuring Domain Names & Static IPs.
• Labels & Selectors.
• Github: CloudNativeWales/container.training.
• Google: SRE (Site Reliability Engineering) Handbook.
• NovemberFive: PyPI repo on AWS S3.
• Zipkin - Distributed tracing system to diagnose latency issues within microservice architectures.
• Loader.io - Free load tester for Web App API's.