ActiveMQ login screen is not showing when runs as a Docker image - docker

Question

I have create a activemq docker file and when i start the image i cannot log to the login screen. The url is http://127.0.0.1:8161
here is my docker file you can also see the url in the log.
# Using jdk as base image
FROM openjdk:8-jdk-alpine
# Copy the whole directory of activemq into the image
COPY activemq /opt/activemq
# Set the working directory to the bin folder
WORKDIR /opt/activemq/bin
# Start up the activemq server
ENTRYPOINT ["./activemq","console"]
and here is the log from the console
INFO: Using java '/usr/lib/jvm/java-1.8-openjdk/bin/java'
INFO: Starting in foreground, this is just for debugging purposes (stop process by pressing CTRL+C)
INFO: Creating pidfile /opt/activemq//data/activemq.pid
Java Runtime: IcedTea 1.8.0_212 /usr/lib/jvm/java-1.8-openjdk/jre
Heap sizes: current=390656k free=386580k max=5779968k
JVM args: -Djava.util.logging.config.file=logging.properties -
Djava.security.auth.login.config=/opt/activemq//conf/login.config -Djava.awt.headless=true -
Djava.io.tmpdir=/opt/activemq//tmp -Dactivemq.classpath=/opt/activemq//conf:/opt/activemq//../lib/: -
Dactivemq.home=/opt/activemq/ -Dactivemq.base=/opt/activemq/ -Dactivemq.conf=/opt/activemq//conf -
Dactivemq.data=/opt/activemq//data
Extensions classpath:
[/opt/activemq/lib,/opt/activemq/lib/camel,/opt/activemq/lib/optional,/opt/activemq/lib/web,
/opt/activemq
/lib/extra]
ACTIVEMQ_HOME: /opt/activemq
ACTIVEMQ_BASE: /opt/activemq
ACTIVEMQ_CONF: /opt/activemq/conf
ACTIVEMQ_DATA: /opt/activemq/data
Loading message broker from: xbean:activemq.xml
INFO | Refreshing org.apache.activemq.xbean.XBeanBrokerFactory$1#6be46e8f: startup date [Mon Nov 23
15:32:26 GMT 2020]; root of context hierarchy
INFO | Using Persistence Adapter: KahaDBPersistenceAdapter[/opt/activemq/data/kahadb]
INFO | KahaDB is version 7
INFO | PListStore:[/opt/activemq/data/localhost/tmp_storage] started
INFO | Apache ActiveMQ 5.16.0 (localhost, ID:afee6bfb43ba-45805-1606145547047-0:1) is starting
INFO | Listening for connections at: tcp://afee6bfb43ba:61616?
maximumConnections=1000&wireFormat.maxFrameSize=104857600
INFO | Connector openwire started
INFO | Listening for connections at: amqp://afee6bfb43ba:5672?
maximumConnections=1000&wireFormat.maxFrameSize=104857600
INFO | Connector amqp started
INFO | Listening for connections at: stomp://afee6bfb43ba:61613?
maximumConnections=1000&wireFormat.maxFrameSize=104857600
INFO | Connector stomp started
INFO | Listening for connections at: mqtt://afee6bfb43ba:1883?
maximumConnections=1000&wireFormat.maxFrameSize=104857600
INFO | Connector mqtt started
INFO | Starting Jetty server
INFO | Creating Jetty connector
WARN | ServletContext#o.e.j.s.ServletContextHandler#ab7395e{/,null,STARTING} has uncovered http
methods for path: /
INFO | Listening for connections at ws://afee6bfb43ba:61614?
maximumConnections=1000&wireFormat.maxFrameSize=104857600
INFO | Connector ws started
INFO | Apache ActiveMQ 5.16.0 (localhost, ID:afee6bfb43ba-45805-1606145547047-0:1) started
INFO | For help or more information please see: http://activemq.apache.org
INFO | ActiveMQ WebConsole available at http://127.0.0.1:8161/
INFO | ActiveMQ Jolokia REST API available at http://127.0.0.1:8161/api/jolokia/
what have i done wrong ? Thanks

Answer 1

As at ActiveMQ 5.16.0 the jetty endpoint host value was changed from 0.0.0.0 to 127.0.0.1, see AMQ-7007.
To overcome this in my Dockerfile I use CMD ["/bin/sh", "-c", "bin/activemq console -Djetty.host=0.0.0.0"]

Answer 2

Activemq startup done by ENTRYPOINT in your Dockerfile, so CMD ["/bin/sh", "-c", "bin/activemq console -Djetty.host=0.0.0.0"] won't work.
Correct usage with ENTRYPOINT is
ENTRYPOINT ["./activemq","console","-Djetty.host=0.0.0.0"]