Mongodb + SpringBoot REST API + Docker Compose not working

Question

I'm trying to use docker-compose to run my Springboot REST API, which uses Mongo as a database, but I'm receiving the following error. Could someone please assist me in resolving this?

When my spring-boot application tries to connect to MongoDB via the Docker container, it gives me problems. Spring-boot appears to be unable to connect to MongoDB on port 27017.

Below is the part of the code and exception.

DockerFile

FROM adoptopenjdk/openjdk11:alpine-jre
ARG JAR_FILE=target/*.jar
COPY ${JAR_FILE} app.jar
EXPOSE 8080
ENTRYPOINT ["java","-jar","/app.jar"]

Docker-Compose.yml


version: '3.8'

services:

      sprintpoker-springboot-container:
            image: sprintpoker-springboot
            build:
                  context: ./
                  dockerfile: Dockerfile
            volumes:
                  - /data/sprintpoker-springboot-container
            ports:
                  - 8080:8080
            depends_on:
                  - mongo

      mongo:
            image: mongo
            container_name: mongodb
            ports:
                  - 27017:27017
            volumes:
                  - data:/data
            environment:
                  MONGO_INITDB_ROOT_USERNAME: rootuser
                  MONGO_INITDB_ROOT_PASSWORD: rootpass

      mongo-express:
            image: mongo-express
            restart: always
            ports:
                  - 8081:8081
            environment:
                  ME_CONFIG_MONGODB_ADMINUSERNAME: rootuser
                  ME_CONFIG_MONGODB_ADMINPASSWORD: rootpass
                  ME_CONFIG_MONGODB_SERVER: mongo
volumes:
      data: {}
networks:
      default:
            name: mongodb_network

Command I am use to run docker:

docker-compose up -d --build --force-recreate --renew-anon-volumes

Exception on spring-boot docker container:

2021-08-16 03:16:02.453 INFO 1 --- [ main] org.mongodb.driver.cluster : Cluster created with settings {hosts=[localhost:27017], mode=SINGLE, requiredClusterType=UNKNOWN, serverSelectionTimeout='30000 ms'}

2021-08-16 03:16:02.545 INFO 1 --- [localhost:27017] org.mongodb.driver.cluster : Exception in monitor thread while connecting to server localhost:27017


com.mongodb.MongoSocketOpenException: Exception opening socket

at com.mongodb.internal.connection.SocketStream.open(SocketStream.java:70) ~[mongodb-driver-core-4.2.3.jar!/:na]

at com.mongodb.internal.connection.InternalStreamConnection.open(InternalStreamConnection.java:143) ~[mongodb-driver-core-4.2.3.jar!/:na]

at com.mongodb.internal.connection.DefaultServerMonitor$ServerMonitorRunnable.lookupServerDescription(DefaultServerMonitor.java:188) ~[mongodb-driver-core-4.2.3.jar!/:na]

at com.mongodb.internal.connection.DefaultServerMonitor$ServerMonitorRunnable.run(DefaultServerMonitor.java:144) ~[mongodb-driver-core-4.2.3.jar!/:na]

at java.base/java.lang.Thread.run(Unknown Source) ~[na:na]

Caused by: java.net.ConnectException: Connection refused (Connection refused)

at java.base/java.net.PlainSocketImpl.socketConnect(Native Method) ~[na:na]

at java.base/java.net.AbstractPlainSocketImpl.doConnect(Unknown Source) ~[na:na]

at java.base/java.net.AbstractPlainSocketImpl.connectToAddress(Unknown Source) ~[na:na]

at java.base/java.net.AbstractPlainSocketImpl.connect(Unknown Source) ~[na:na]

at java.base/java.net.SocksSocketImpl.connect(Unknown Source) ~[na:na]

at java.base/java.net.Socket.connect(Unknown Source) ~[na:na]

at com.mongodb.internal.connection.SocketStreamHelper.initialize(SocketStreamHelper.java:107) ~[mongodb-driver-core-4.2.3.jar!/:na]

at com.mongodb.internal.connection.SocketStream.initializeSocket(SocketStream.java:79) ~[mongodb-driver-core-4.2.3.jar!/:na]

at com.mongodb.internal.connection.SocketStream.open(SocketStream.java:65) ~[mongodb-driver-core-4.2.3.jar!/:na]

... 4 common frames omitted

application.properties

spring.data.mongodb.authentication-database=admin
spring.data.mongodb.username=rootuser
spring.data.mongodb.password=rootpass
spring.data.mongodb.database=sprint
spring.data.mongodb.port=27017
spring.data.mongodb.host=localhost
spring.data.mongodb.auto-index-creation=true

Thanks!

Can you also share the spring boot snippet, where you configured spring boot to connect to mongodb ? — Rafaf Tahsin
– Rafaf Tahsin, Commented Aug 16, 2021 at 3:35
According to the error, spring is using localhost:27017, therefore trying to on connect to itself, not mongo:27017, the other container — OneCricketeer
– OneCricketeer, Commented Aug 16, 2021 at 3:41
@RafafTahsin I am using JPA, so did you want me to share application.properties file? — Nilay Narlawar
– Nilay Narlawar, Commented Aug 16, 2021 at 4:55
@OneCricketeer I didn't understand, which line you talking about. — Nilay Narlawar
– Nilay Narlawar, Commented Aug 16, 2021 at 4:56
He means 2021-08-16 03:16:02.545 INFO 1 --- [localhost:27017] org.mongodb.driver.cluster : Exception in monitor thread while connecting to server localhost:27017. The address should be mongo:27017. — Hans Kilian
– Hans Kilian, Commented Aug 16, 2021 at 6:09

Nilay Narlawar · Accepted Answer · 2021-08-22 06:49:58Z

1

I am able to resolve the issue Thanks to @OneCricketeer and @Michał Krzywański (Mongodb connection error though docker in springboot).

Solution: Added below line in docker-compose file:

environment:
      - SPRING_DATA_MONGODB_.HOST=mongo

 expose:
                  - 27017

answered Aug 22, 2021 at 6:49

Nilay Narlawar

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OneCricketeer · Accepted Answer · 2021-08-16 18:07:41Z

0

Your error is here

2021-08-16 03:16:02.545 INFO 1 --- [localhost:27017] org.mongodb.driver.cluster : Exception in monitor thread while connecting to server localhost:27017

The Spring app container isn't running anything on port 27017, let alone a MongoDB server.

Change

spring.data.mongodb.host=localhost

to

spring.data.mongodb.host=mongo

answered Aug 16, 2021 at 18:07

OneCricketeer

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2 Comments

Nilay Narlawar Over a year ago

I tried this to do, still getting same error: ``` 2021-08-18 04:51:33.254 INFO 1 --- [ main] org.mongodb.driver.cluster : Cluster created with settings {hosts=[localhost:27017], mode=SINGLE, requiredClusterType=UNKNOWN, serverSelectionTimeout='30000 ms'} 2021-08-18 04:51:33.366 INFO 1 --- [localhost:27017] org.mongodb.driver.cluster : Exception in monitor thread while connecting to server localhost:27017 com.mongodb.MongoSocketOpenException: Exception opening socket at com.mongodb.internal.connection.SocketStream.open(SocketStream.java:70) ~[mongodb-driver-core-4.2.3.jar!/:na] ```

OneCricketeer Over a year ago

Please see stackoverflow.com/a/34373673/2308683

Amol Gharpure · Accepted Answer · 2021-09-22 15:41:53Z

Application.yaml / properties file

spring:
        data:
          mongodb:
            database: test
            host: mymongodb
            port: 27017

        spring.data.mongodb.port=27017
        spring.data.mongodb.host=<mongo-image-name>
        spring.data.mongodb.database=<any-database-name>

Create mongo image :-

docker pull mongo:latest

Stop Local Mongo Service as it runs on the same port
Run docker image :-

docker run -d -p 27017:27017 --name mymongodb mongo:latest --mymongodb is the container name and will be the host name in yaml or properties file

DockerFile Example :-

FROM openjdk:11
      ADD target/springboot-mongo-docker.jar app.jar
      EXPOSE 8080
      ENTRYPOINT ["java","-jar","app.jar"]

Build the jar :- mvn clean install
Build Docker Image :- docker build -t springboot-mongodb:1.0 .
Run The Linked Container as follows :-

docker run -p 8080:8080 --name springboot-mongodb --link mymongodb:mongo -d springboot-mongodb:1.0

docker-compose.yml :-

docker-compose up

> version: "3"      
     services:       mymongodb:
>          image: mongo:latest
>          container_name: "mymongodb"
>          ports:
>            - 27017:27017       springboot-mongodb:
>          image: springboot-mongodb:1.0
>          container_name: springboot-mongodb
>          ports:
>            - 8080:8080
>          links:
>            - mymongodb

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