Unable to execute the mongo-express example

Hi,

I tried to execute the example shared in file "https://gitlab.com/nanuchi/youtube-tutorial-series/-/blob/master/configmap-and-secret-volumes/mongodb-config-components.yaml". Even tried to execute the same file but as I can check my express server is not able to connect to DB.

I did some workaround to check if there is some other issue in env variable. i made changes in ConfigMap file and instead of mongodb-service, i gave pod's ip address and it started to work.

So, I think my app is not connecting to URL as its not able to get actual DB url from configmap.

Could you please help me out if I am doing something wrong?

Please let me know in case you need anything from my side.

Thanks in advance !!!