App Runner Port is not honored

Question

Dear Support ,
We are using App Runner to run our dockerized spring boot app and would want to expose a particular port at which the service responds to.
However the domain that exposed from the **App Runner** is without the port that has been configured so this means that it works on a default secure port ie **443**.
Is this a **bug** ?  so this means that App Runner service is secured even without the **basic authentication** set up ? Please kindly clarify
Thanks and Regards
Thulsi Doss Krishnan

Answer

Many  thanks @Noah L for the quick response. There is an issue in scrapping the spring boot metrics running in app runner with the App runner Domain.

So in my Prometheus configuration i have this configuration

- job_name: 'spring-actuator'
    metrics_path: '/actuator/prometheus'
    **scheme: https**
    scrape_interval: 5s
    static_configs:
    - targets: ['z9ynuwgrpt.us-east-1.awsapprunner.com']

how when i see the target on prometheus i get the following error

**EndPoint**
https://z9ynuwgrpt123.us-east-1.awsapprunner.com/actuator/prometheus DOWN  Error server returned HTTP status **404 Not found**

Please note my prometheus is a docker image running in an aws EC2 instance.

Any clues as to why prometheus is showing an error when it is trying to scrape metrics from the **App Runner endpoint**

Answer

App Runner includes fully managed TLS with no setup needed. App Runner automatically renews the certificates before their expiration date. The port configured on the App Runner service is the port the application listens on, which is mapped to the public 443 port automatically.

App Runner Port is not honored

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