I created a docker container on which the mongodb instance is running, which should be exposed to the host. However, when I want to connect from the host to the mongodb container, the connection will be rejected.
This is my Docker file:
FROM mongo:latest RUN mkdir -p /var/lib/mongodb && \ touch /var/lib/mongodb/.keep && \ chown -R mongodb:mongodb /var/lib/mongodb ADD mongodb.conf /etc/mongodb.conf VOLUME [ "/var/lib/mongodb" ] EXPOSE 27017 USER mongodb WORKDIR /var/lib/mongodb ENTRYPOINT ["/usr/bin/mongod", "--config", "/etc/mongodb.conf"] CMD ["--quiet"]
/etc/mongodb.conf:
And this is the configuration file for MongoDB, where I bind IP 0.0.0.0 explicitly, as found here, on SO , that 127.0.0.1 may be the root cause of my problem (but it is not)
systemLog: destination: file path: /var/log/mongodb/mongo.log logAppend: true storage: dbPath: /var/lib/mongodb net: bindIp: 0.0.0.0
The docker container is running, but connection to the host is not possible:
host$ docker run -p 27017:27017 -d --name mongodb-test mongodb-image host$ docker ps $ docker ps CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES 6ec958034a6f mongodb-image "/usr/bin/mongod --co" 4 seconds ago Up 3 seconds 0.0.0.0:27017->27017/tcp mongodb-test
Find the IP Address:
host$ docker inspect 6ec958034a6f |grep IPA "SecondaryIPAddresses": null, "IPAddress": "172.17.0.2", "IPAMConfig": null, "IPAddress": "172.17.0.2",
Try connecting:
host$ mongo 172.17.0.2:27017 MongoDB shell version v3.4.0 connecting to: mongodb://172.17.0.2:27017 2016-12-16T15:53:40.318+0100 W NETWORK [main] Failed to connect to 172.17.0.2:27017 after 5000 milliseconds, giving up. 2016-12-16T15:53:40.318+0100 E QUERY [main] Error: couldn't connect to server 172.17.0.2:27017, connection attempt failed : connect@src /mongo/shell/mongo.js:234:13 @(connect):1:6 exception: connect failed
When I ssh into the container, I can connect to mongo and successfully list the test database.