Docker-compose migrating from links to networking MongoDB database issue - spring

Question

I am trying to migrate by Dockerfile from using links to networking but I am experiencing some problems. I will first sketch my original setup:
Original - Links
Dockerfile:
FROM java:8
VOLUME /tmp
ADD docker_micro_maven-0.0.1-SNAPSHOT.jar app.jar
RUN bash -c 'touch /app.jar'
EXPOSE 8080
ENTRYPOINT ["java","-Dspring.data.mongodb.uri=mongodb://mongodb/micros", "-Djava.security.egd=file:/dev/./urandom","-jar","/app.jar"]
docker-compose.yml:
mongodb:
image: mongo
employee:
image: jdruwe/docker_micro_maven
links:
- mongodb
ports:
- "8080"
New - Networking
Dockerfile:
FROM java:8
VOLUME /tmp
ADD docker_micro_maven-0.0.1-SNAPSHOT.jar app.jar
RUN bash -c 'touch /app.jar'
EXPOSE 8080
ENTRYPOINT ["java","-Dspring.data.mongodb.uri=mongodb://${MONGO_URI_DOCKER}/micros", "-Djava.security.egd=file:/dev/./urandom","-jar","/app.jar"]
docker-compose.yml:
mongodb:
container_name: "db"
image: mongo
employee:
image: jdruwe/docker_micro_maven
environment:
- MONGO_URI_DOCKER=db:27017
ports:
- "8080"
When I called my rest endpoint in the spring boot app (original situation) I always got a response (some json data). When I call it now I get the following error response:
{
"timestamp": 1453405937191,
"status": 500,
"error": "Internal Server Error",
"exception": "org.springframework.dao.DataAccessResourceFailureException",
"message": "Timed out after 10000 ms while waiting to connect. Client view of cluster state is {type=Unknown, servers=[{address=db:27017, type=Unknown, state=Connecting, exception={com.mongodb.MongoException$Network: Exception opening the socket}, caused by {java.net.UnknownHostException: db: unknown error}}]; nested exception is com.mongodb.MongoTimeoutException: Timed out after 10000 ms while waiting to connect. Client view of cluster state is {type=Unknown, servers=[{address=db:27017, type=Unknown, state=Connecting, exception={com.mongodb.MongoException$Network: Exception opening the socket}, caused by {java.net.UnknownHostException: db: unknown error}}]",
"path": "/employee"
}
The video from Devoxx I used as reference: https://youtu.be/aSATsLG59Zs?t=53m33s
It seems that I keep doing something wrong but I am not really sure what it is, any help is welcome. Thanks in advance!

Answer 1

In docker-compose 1.5.x, the new networking is still an experimental feature that needs to be enabled using the --x-networking option.
The new networking features will be moved out of experimental in docker-compose 1.6 and are automatically used if the new (2.0) file format is used for your docker-compose.yml.
Read the release notes of docker-compose 1.6-rc1 for more information;
https://github.com/docker/compose/releases/tag/1.6.0-rc1