session-71.txt

1. user must have sudo access
	check root user or not, if yes proceed, if no exit
2. run the commands to install and configure
3. use validate function to check success or not
4. use exit status to validate, if 0 success, otherwise failure

shell script to create ec2 instances and r53 records
--------------------------------------------
mongodb redis mysql rabbitmq catalogue user cart shipping payment web

if shipping or mysql take t3.medium otherwise t3.micro

if web use public ip otherwise private ip

aws ec2 run-instances --image-id ami-041e2ea9402c46c32 --instance-type t3.micro --security-group-ids sg-0fea5e49e962e81c9 --subnet-id subnet-09863c54177764565 --query 'Instances[0].InstanceId' --output text

aws ec2 create-tags --resources $instance_id --tags Key=Name,Value=$name

aws ec2 describe-instances --instance-ids i-04429f69b1bbd7867 --query 'Reservations[0].Instances[0].[PrivateIpAddress]' --output text


aws route53 change-resource-record-sets --hosted-zone-id $hosted_zone_id --change-batch file://<(cat << EOF
{
  "Comment": "Testing creating a record set",
  "Changes": [
    {
      "Action": "UPSERT",
      "ResourceRecordSet": {
        "Name": "$name.$domain_name",
        "Type": "A",
        "TTL": 1,
        "ResourceRecords": [
          {
            "Value": "${ip_to_use}"
          }
        ]
      }
    }
  ]
}
EOF
)