Quick example using bruce.tools 1.5 to standup a new ec2 instance, run a command and then terminate the instance.

bruce-ec2

---
variables:
  INSTANCE_TYPE: t2.micro
steps:
  # Create a new aws ec2 instance, but only if none already exist (notIf)
- cmd: aws ec2 run-instances --image-id ami-0c614dee691cbbf37 --count 1 --instance-type {{.INSTANCE_TYPE}} --key-name YourKey --subnet-id subnet-07317935cd9123d --tag-specifications 'ResourceType=instance,Tags=[{Key=BoxType,Value=TestMe}]'
  notIf: INSTANCE_IP=$(aws ec2 describe-instances --filters Name=tag:BoxType,Values=TestMe --query "Reservations[*].Instances[0].PublicIpAddress" --output text); if [ ! -z "$INSTANCE_IP" ] && [ "$INSTANCE_IP" != "None" ]; then echo "instance up"; fi
  setEnv: NEW_INSTANCE
  # Get the ip address of the instance so we can connect
- cmd: 'for i in {1..12}; do INSTANCE_IP=$(aws ec2 describe-instances --filters Name=tag:BoxType,Values=TestMe --query "Reservations[*].Instances[0].PublicIpAddress" --output text); if [ -n "$INSTANCE_IP" ] && [ "$INSTANCE_IP" != "None" ]; then echo "$INSTANCE_IP"; break; fi; sleep 5; done'
  setEnv: INSTANCE_IP
- sleep: 90 # to make sure instance comes up properly, but only if the instance doesn't exist yet.
  notIf: if [ "{{.NEW_INSTANCE}}" != "" ]; then echo "new instance"; fi
  # Use echo to state what we are connecting to, but exit the run if the instance ip is not set
- cmd: 'echo "Connecting to: {{.INSTANCE_IP}}"'
  exitIf: if [ -z "{{.INSTANCE_IP}}" ]; then echo "No IP Address"; fi
  # run a remote command on the ec2 box and capture the output into remhost environment variable
- remoteCmd: hostname -f
  host: ec2-user@{{.INSTANCE_IP}}
  allowInsecure: true
  setEnv: remhost
  # use cmd to echo out the envar that was set
- cmd: echo "Ran echo on {{.remhost}}"
# now we just terminate the instance as we no longer need it.
- cmd: aws ec2 terminate-instances --instance-ids $(aws ec2 describe-instances --filters "Name=tag:BoxType,Values=TestMe" --query "Reservations[*].Instances[0].InstanceId" --output text) && echo "Instance terminated."