AWS: CLI automation demo with pokemon

export AWS_DEFAULT_REGION=us-east-1

VPC=$(aws ec2 describe-vpcs --query 'Vpcs[?IsDefault==`true`].VpcId' --output text)
echo The default VPC is $VPC.

SUBNET_IDX=$(($RANDOM % 6))
echo Your subnet index is $SUBNET_IDX.

SUBNET=$(aws ec2 describe-subnets \
    --filters "Name=vpc-id,Values=$VPC" \
    --query "Subnets[$SUBNET_IDX].SubnetId" \
    --output text)
echo Your subnet is $SUBNET.

AMI=$(aws ec2 describe-images \
    --owners 099720109477 \
    --filters 'Name=name,Values=ubuntu/images/hvm-ssd/ubuntu-*-22.04-amd64-server-*' 'Name=state,Values=available' \
    --query 'sort_by(Images, &CreationDate)[-1].[ImageId]' \
    --output text)
echo The AMI is going to be $AMI.

SG=$(aws ec2 create-security-group \
    --group-name AppSG-$USER\
    --description "The security group of the application." \
    --vpc-id $VPC \
    --query 'GroupId' \
    --output text)
echo The security group is $SG.

aws ec2 authorize-security-group-ingress \
    --group-id $SG \
    --protocol tcp \
    --port 8080 \
    --cidr 0.0.0.0/0

cat << EOF > pokemon.sh
#!/bin/sh

sudo apt update
sudo apt install awscli openjdk-17-jre-headless -y
wget https://github.com/ciberado/pokemon-java/releases/download/v2.0.0/pokemon-2.0.0.jar
java -jar pokemon-2.0.0.jar
EOF

ls
cat pokemon.sh

aws ec2 run-instances \
    --subnet-id $SUBNET \
    --image-id $AMI \
    --security-group-ids $SG \
    --instance-type t3.nano \
    --block-device-mapping DeviceName=/dev/sda1,Ebs={VolumeSize=8} \
    --user-data file://pokemon.sh \
    --tag-specifications "ResourceType=instance,Tags=[{Key=Name,Value=$USER},{Key=App,Value=Pokemon}]"

IP=$(aws ec2 describe-instances \
    --filters "Name=tag:Name,Values=$USER" \
    --query 'Reservations[*].Instances[*].PublicIpAddress' \
    --output text)
echo Your application is at http://$IP:8080
echo And your Pokémon is $(curl -s http://$IP:8080/ | jq .name -r).


aws ec2 describe-instances \
    --filters "Name=instance-type,Values=t3.nano" \
    --query "Reservations[*].Instances[*].{Id: InstanceId, name: Tags[?Key=='Name'] | [0].Value, IP: PublicIpAddress, Time: LaunchTime}" \
    --output table

ADDRESSES=$(aws ec2 describe-instances \
  --filters "Name=instance-type,Values=t3.nano" \
  --query "Reservations[*].Instances[*].PublicIpAddress" \
  --output text)
echo Instances public IPs:
echo $ADDRESSES


for IP in $ADDRESSES
do
  POKEMON=$(curl -s http://$IP:8080/ | jq .name -r)
  echo "$IP: $POKEMON ( http://$IP:8080 )"
done
Open any of the instances.





aws ec2 run-instances \
    --subnet-id $SUBNET \
    --image-id $AMI \
    --security-group-ids $SG \
    --count 1 \
    --instance-type t3.nano \
    --block-device-mapping DeviceName=/dev/sda1,Ebs={VolumeSize=8} \
    --user-data file://pokemon.sh \
    --instance-market-options '{"MarketType":"spot"}'