MultiCloud Classroom notes 12/Feb/2025

Accesing Public Clouds

• All the public clouds on a broader note give us 3 interfaces
  • browser or GUI based
    • AWS => Console
    • Azure => Portal
  • cli access => for commandline access and automation using scripts (bash or powershell)
    • AWS:
      • AWS CLI
      • AWS CLI for Powershell
    • Azure:
      • Azure CLI
      • Azure Powershell
  • client libraries or sdks => tool building
    • AWS:
      • Boto3 (sdk for python)
      • AWS SDK for java, .net, javascript …
    • Azure:
      • Azure SDK for python, .net, java, javascript …

AWS CLI

• To login into AWS From CLI we need credentials and AWS offers programatic access via access key and secret access key
• Key creation: Watch classroom video
• AWS CLI Pattern

aws <service> <command> [<sub-command>] [args]

• Example

aws s3 ls
aws ec2 start-instance --instance-id i-831klsdjfl
aws ec2 delete-vpc --vpc-id vpc-07812347

• AWS has elaborate documentation of cli
  • CLI Patterns

Patterns in finding a right command or subcommand

• All the delete operations will have delete-* or terminate-* and get operations describe-* or list-* …

Lets find the commands

• Lets find a command to get all ec2 instances. cli reference

aws ec2 describe-instances

• Almost all the cli commands will have
  • Synopsis: Describes all arguments
  • Options: describe each argument and the purpose
  • Global Options: we can change region, output format or query the response
  • Examples: common examples
  • Output: output structure
• Get all launch templates in mumbai region

aws ec2 describe-launch-templates