The Tomcat connector configured to listen on port 80 failed to start

Question

I run webapp https://github.com/donhuvy/mycustomer I face error

Description:

The Tomcat connector configured to listen on port 80 failed to start. The port may already be in use or the connector may be misconfigured.

Action:

Verify the connector's configuration, identify and stop any process that's listening on port 80, or configure this application to listen on another port.

This is my log https://gist.github.com/donhuvy/93210850f955f9ddbc00ab735a0ade18#file-terminal-log-L191

I have been check port 80 by command

sudo lsof -i TCP:80 | grep LISTEN

But result is nothing. How to fix it? (I use macOS 10.12.5)

Update:

Run Sencha client (inside directory client)

sencha web -port 8082 start

and I change Spring Boot port to 8082:

APPLICATION FAILED TO START

Description:

The Tomcat connector configured to listen on port 8082 failed to start. The port may already be in use or the connector may be misconfigured.

Action:

Verify the connector's configuration, identify and stop any process that's listening on port 8082, or configure this application to listen on another port.

Solution

On linux ports below 1024 can be opened only by root, so the port 80 is restricted by default

if you want to publish your app on 80 port you need to redirect request from port 80 to the port you gonna run your springapp (e.g 8080) port

you can use apache2 server wich is allowed by default to work on port 80 and can forward requests for you to tomcat

Source: Spring Boot running app on port 80

Comments

[Ronald Klop]

This is indicated by 'java.net.SocketException: Permission denied'. If another program was already bound to port 80 (which other answers suggest) you would get another error message like 'port already in use'. BTW: ports below 1024 work the same on macOS (as is mentioned in the question).

[naXa stands with Ukraine]

what is "post no of tomcat"?

[Dan Ortega]

Thank you very much. I was experiencing the issue in Manjaro.