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AWS CLI – Useful Commands

CloudFormation

Create a stack with some parameters:

aws cloudformation create-stack --stack-name MyWPTestStack \
--template-url https://s3.us-west-2.amazonaws.com/cloudformation-templates-us-west-2/WordPress_Single_Instance.template \
--parameters ParameterKey=KeyName,ParameterValue=name_of_key \
ParameterKey=DBPassword,ParameterValue=very_secure_password \
ParameterKey=DBUser,ParameterValue=some_guy \
ParameterKey=DBRootPassword,ParameterValue=more_secure_password

Create a stack without parameters; different domain pattern for template-url:

aws cloudformation create-stack --stack-name SomeStackName \\
--template-url https://s3.amazonaws.com/some-bucket/SomeStackTemplate.json

S3

Two ways to list objects in a bucket:

aws s3api list-objects --bucket some-bucket --encoding-type url

aws s3 ls s3://some-bucket

Copy entire directory to an S3 bucket:

aws s3 cp ./origin-directory s3://some-bucket --recursive

Copy a single file to an S3 bucket:

aws s3 cp ./origin-directory/CloudFormationUpdateTest.json s3://some-bucket/CloudFormationUpdateTest.json

EC2

Get instances, display only image ID, tags, and state:

aws ec2 describe-instances --query "Reservations[*].Instances[*].[ImageId,Tags[*],State]"

Get key stored pairs:

aws ec2 describe-key-pairs