INDEX

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2024-01-04 00:20
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Devops Toolkit... Running AWS Services in a Laptop using LocalStack
https://www.youtube.com/watch?v=8hi9P1ffaQk

Localstack lets you run AWS services/API locally - good for local testing
	# Install with helm (a took to manage kubernetes clusters)
	helm repo add localstack https://helm.localstack.cloud
	helm repo update
	helm upgrade --install localstack localstack/localstack --namespace localstack \
	 --create-namespace --values values.yaml

	# Then run the commands noted in that output (exports local ENV vars)
	export NODE_PORT=$(kubectl get --namespace localstack \
	 -o jsonpath="{.spec.ports[0].nodePort}" services localstack) # Something like 31566
	export NODE_IP=$(kubectl ge t--namespace localstack \
	 -o jsonpath="{.items[0].status.addresses[0].address}") # 127.0.0.1

	export LOCALSTACK_URL="http://$NODE_IP:$NODE_PORT" # http://127.0.0.1:31566

	# values.yaml
	extraEnvVars:
	- name: LOCALSTACK_API_KEY
	  value: ...
	- name: SERVICES
	  value: s3,ec2,eks,iam,ecr,rds
	
Local stacks act intentionally similar to AWS - need regionality and access keys
	export AWS_ACCESS_KEY_ID=test; export AWS_SECRET_ACCESS_KEY=test
	export AWS_DEFAULT_REGION=us-east-1

	alias aws="aws --endpoint-url $LOCALSTACK_URL" # Makes things quicker

	aws s3api list-buckets
	aws s3api create-bucket --bucket dot
	aws s3api put-object --bucket dot --key silly --body silly.txt # Copy a file to bucket
	aws s3api get-object --bucket dot --key silly silly-from-s3.txt # Copy a file from bucket
	aws s3api list-objects --bucket dot # Lists contents of a bucket

	aws s3api delete-object --bucket dot --key silly
	aws s3api delete-bucket --bucket dot

Now see if you can make a full scale database in Localstack
	aws rds create-db-instance --db-instance-identifier devops-toolkit \
	 --db-instance-class c1 --engine postgres
	aws rds describe-db-instance
	aws rds delete-db-instance --db-instance-identifier devops-toolkit

Can make an eks (elastic kubernetes service) cluster
	aws eks create-cluster --name my-cluster --role-arn r1 --resources-vpc-config '{}'
	aws eks list-clusters
	aws eks describe-cluster --name my-cluster

	# See why this is failing by looking at kubernetes logs
	kubectl --namespace localstack logs --selector app.kubernetes.io/name=localstack --tail 100

Only issue is parts costs money to get this and lacks some features


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2024-01-04 17:00
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Localstack... Localstack 101
https://www.youtube.com/playlist?list=PLTew28KOwGxPqbkFiW518eeIfiV495bm0

Localstack is a local version of AWS - can interact exactly the same
Faster and cheaper for local development

Basically, install localstack and use the cli to interface with it
	docker pull localstack/localstack
	pip install awscli-local
	... # Install localstack-cli

	localstack start -d # Start daemon
	awslocal s3api list-buckets
	awslocal s3 mb s3://test-bucket # Make new bucket
	awslocal s3api list-buckets

	# Can alternatively install it through docker
	docker run --rm -it -p 4566:4566 -p 4510-4559:4510-4559 localstack/localstack
	
Can use the web app instead to manage your stack: app.localstack.cloud
	# Change endpoint URL in settings - e.g. localhsot.localstack.cloud:4566
	# System status lets you see what services are being running

Example project: [API gateway -> Lambda resources -> DynamoDB -> Lambda -> Gateway]
Can save a whole cloud project to a zipped export
	loclastack pod save file://`pwd`/podfolder
	localstack pod load file://`pwd`/podfolder