Stop/Start EC2

stop-start-EC2.sh

#!/bin/bash

# Set variables for tags, region, SSH key location & user
# Set these 4 to appropriate values
REGION="eu-central-1"
TAG="<EC2_TAG>"
SSH="~/.ssh/<PATH_TO_FILE>"
USER="ubuntu"

# Check AWS credentials exist
if [[ $(aws configure list | grep "*") && $? -eq 0 ]]; then
 :
else
  echo "Please configure AWS credentials to continue..."
   exit 0
fi

# Get instance ID
ID="$(aws ec2 --region $REGION describe-instances --filters "Name=tag:Name,Values=$TAG" --query Reservations[].Instances[].InstanceId --output=text)"

## Functions
# State of instance
STATE () {
  aws ec2 --region $REGION describe-instances --filters "Name=tag:Name,Values=$TAG" --query Reservations[].Instances[].State[].Name --output=text
}

# Get Public IP of instance
PUBLIC_IP () {
  aws ec2 --region $REGION describe-instances --filters "Name=tag:Name,Values=$TAG" --query Reservations[].Instances[].NetworkInterfaces[].Association[].PublicIp --output=text
}
##

# Stop instance if running
if [ "$(STATE)" = "running" ]; then
  read -p "Stop Instance $TAG (y/n)? " answer
  case ${answer:0:1} in
      y|Y )
          echo "$TAG" "Stopping..."
          aws ec2 stop-instances --instance-ids "$ID" --region "$REGION" > /dev/null 2>&1
            spin='-\|/'
            i=0
            while [ "$(STATE)" != "stopped" ]; do
              i=$(( (i+1) %4 ))
              printf "\r${spin:$i:1}"
              sleep .1
            done
            echo
          echo "$TAG" "Stopped!"
      ;;
      * )
          exit 0
      ;;
  esac

  # Start instance if stopped
else
  read -p "Start Instance $TAG (y/n)? " answer
  case ${answer:0:1} in
      y|Y )
      echo "$TAG" "Starting..."
      aws ec2 start-instances --instance-ids "$ID" --region "$REGION" > /dev/null 2>&1
        spin='-\|/'
        i=0
        while [ "$(STATE)" != "running" ]; do
          i=$(( (i+1) %4 ))
          printf "\r${spin:$i:1}"
          sleep .1
        done
        echo
      echo "$TAG" "Started..."
      ;;
      * )
          exit 0
      ;;
  esac
    echo "Logging into instance"
    # Get Public IP
    PUBLIC_IP > /dev/null 2>&1
    # SSH into instance
    until ssh -qi ssh -i "$SSH" "$USER"@"$(PUBLIC_IP)"
    do
      sleep .1
      done
fi