AWS Cloud Technical Essentials Week 1 exercise

Question

I cant connect to to the app created in week 1 exercise.  I've  the instructions to the letter and nothing works.  Ive gone on my own as I have used ec2 before, so here are the steps Ive done:

Created both EC 2 amazon linux 2 and 2023
used this script in user data and a bash script
#!/bin/bash -ex
wget https://aws-tc-largeobjects.s3-us-west-2.amazonaws.com/DEV-AWS-MO-GCNv2/FlaskApp.zip
unzip FlaskApp.zip
cd FlaskApp/
yum -y install python3 mysql
pip3 install -r requirements.txt
amazon-linux-extras install epel
yum -y install stress
export PHOTOS_BUCKET=${SUB_PHOTOS_BUCKET}
export AWS_DEFAULT_REGION=us-west-2
export DYNAMO_MODE=on
FLASK_APP=application.py /usr/local/bin/flask run --host=0.0.0.0 --port=80

This script only worked in the 2023 server, but still had no access externally to the app.
I really need some help, been working on this for 5 hours and no progress.

Accepted Answer

Problem solved sort of.  It will not run when I click the open address link in EC2 console. I had to open a new window then copy and paste the IP into the new window.  Using Firefox currently.  I did this on my laptop as well and had the same issue, so I'm thinking an add-on I have running there is blocking it somehow.

Answer

Follow up Ive done both a curl and wget to the localhost.  Worked fine.
I cant connect to the server using the public ip.
Ive allowed everything I can in the setings

Answer

Although a late reply but following made if work for me
1. Add rule for TCP port 80 traffic from internet rule in Security Group
2. Use following User Data for launching the instance
#!/bin/bash -ex
wget https://aws-tc-largeobjects.s3-us-west-2.amazonaws.com/DEV-AWS-MO-GCNv2/FlaskApp.zip
unzip FlaskApp.zip
cd FlaskApp/
yum -y install python3
yum -y install python3-pip
pip install -r requirements.txt
yum -y install stress
export PHOTOS_BUCKET={Bucket}
export AWS_DEFAULT_REGION={Region}
export DYNAMO_MODE=on
FLASK_APP=application.py /usr/local/bin/flask run --host=0.0.0.0 --port=80

AWS Cloud Technical Essentials Week 1 exercise

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