Clever Geek Handbook

Running Dropwizard app on Heroku: R10 failed to bind to $ PORT

I recently pointed towards dropwizard and heroku for a relatively simple creation and deployment of restful web services.

Following the initial tutorial at http://dropwizard.readthedocs.org/en/latest/getting-started.html I soon had a simple Hello World service running on my localhost, no problem at all.

Moving on to trying to deploy this to Heroku, I hit a problem. When deploying the app to heroku, I get the error

2014-08-14T11:34:59.869067+00:00 heroku[web.1]: State changed from starting to crashed
2014-08-14T11:34:59.070364+00:00 heroku[web.1]: Error R10 (Boot timeout) -> Web
process failed to bind to $PORT within 60 seconds of launch
2014-08-14T11:34:59.070573+00:00 heroku[web.1]: Stopping process with SIGKILL
2014-08-14T11:34:59.857478+00:00 heroku[web.1]: Process exited with status 137

My Procfile looks like ...

web java $JAVA_OPTS -D.http.port=$PORT -jar target/exampleMavenProject-0.0.1-SNAPSHOT.jar server hello-world.yml

This is exactly the same as the command line code to run the application on localhost, except

$JAVA_OPTS -D.http.port=$PORT

$ JAVA_OPTS is defined in the herkou application config variables; and from my understanding $ PORT cannot be overridden.

And hello-world.yml doesn't contain any additional config variables other than those required for the dropwizard example

template: Hello, %s!

defaultName: Stranger

Does anyone have any suggestions as to why this is not working?

Thank.

+3


source to share


2 answers


Dropwizard 0.7.x changed its server configuration; in particular http.port

no longer works.

Instead, you should use server.connector.port

procfile / .yml for your files. Here's an example:

PROCFILE

web: java $JAVA_OPTS -Ddw.server.connector.port=$PORT -jar target/pos-tagger-1.0-SNAPSHOT.jar server src/main/resources/POSTagger.yml


POSTagger.yml

server:
  type: simple
  applicationContextPath: /
  adminContextPath: /admin
  connector:
    type: http
    port: 8080

If you want to see a complete, working example of hero using 0.7.x check out: https://github.com/xinranxiao/POSTagger

+6


source


Update for Dropwizard 1.0 using Gradle:

PROCFILE

web: java $JAVA_OPTS -Ddw.server.applicationConnectors[0].port='$PORT' -jar build/libs/yourJar-1.0-all.jar server config-production.yml


config-production.yml

server:
registerDefaultExceptionMappers: false
applicationConnectors:
    - type: http
      port: 8080
+1


source






More articles:


All Articles