[KARAF-7610] JMX: rmiRegistryHost=0.0.0.0 not working

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 4.2.16, 4.3.8, 4.4.2
• Fix Version/s: 4.4.3, 4.3.9

Environment

Debian 11.3

Docker version 20.10.17, build 100c701

• Target Version/s: 4.4.3, 4.3.9
• External issue URL: https://issues.apache.org/jira/browse/KARAF-7443
• External issue ID: KARAF-7443
• Assignee: Jean-Baptiste Onofré
• Reporter: Ondrej Mrekaj
• Created: 24/Nov/22 12:00
• Updated: 03/Jan/23 14:30
• Resolved: 31/Dec/22 06:23

Description

We noticed a problem with access to JMX in the case that karaf is running in a docker container and uses a different network than the host. Last versions of  apache karaf  where were working example below  are 4.3.0, 4.2.11.

The given problem does not allow us to use JMX monitoring and simultaneously separate individual docker networks from the host network. 

Please see example below: 

working version, docker network=host

docker run -it -d --name=test.4.4.2 --network=host -e ORG_APACHE_KARAF_MANAGEMENT_RMIREGISTRYHOST='172.21.51.155' -e ORG_APACHE_KARAF_MANAGEMENT_RMISERVERHOST='172.21.51.155' -e KARAF_DEBUG=true -p 1099:1099 -p 44444:44444 apache/karaf:4.4.2

docker exec -it test.4.4.2 /bin/bash
sed -i 's/rmiServerHost = 127.0.0.1/rmiServerHost = ${env:ORG_APACHE_KARAF_MANAGEMENT_RMISERVERHOST}/'     /opt/apache-karaf/etc/org.apache.karaf.management.cfg
sed -i 's/rmiRegistryHost = 127.0.0.1/rmiRegistryHost = ${env:ORG_APACHE_KARAF_MANAGEMENT_RMIREGISTRYHOST}/' /opt/apache-karaf/etc/org.apache.karaf.management.cfg
sed -i 's/#karaf = karaf,_g_:admingroup/karaf = karaf,_g_:admingroup/' /opt/apache-karaf/etc/users.properties
sed -i 's/#_g_\\:admingroup = /_g_\\:admingroup = /' /opt/apache-karaf/etc/users.properties
echo 'java.rmi.server.hostname=172.21.51.155'  >> /opt/apache-karaf/etc/system.properties
exit
docker restart test.4.4.2

Connect to service:jmx:rmi:///jndi/rmi://172.21.51.155:1099/karaf-root was successful.

not-working version, docker network=test

docker network create test
docker run -it -d --name=test.4.4.2 --network=test-e ORG_APACHE_KARAF_MANAGEMENT_RMIREGISTRYHOST='0.0.0.0' -e ORG_APACHE_KARAF_MANAGEMENT_RMISERVERHOST='0.0.0.0' -e KARAF_DEBUG=true -p 1099:1099 -p 44444:44444 apache/karaf:4.4.2

docker exec -it test.4.4.2 /bin/bash
sed -i 's/rmiServerHost = 127.0.0.1/rmiServerHost = ${env:ORG_APACHE_KARAF_MANAGEMENT_RMISERVERHOST}/'     /opt/apache-karaf/etc/org.apache.karaf.management.cfg
sed -i 's/rmiRegistryHost = 127.0.0.1/rmiRegistryHost = ${env:ORG_APACHE_KARAF_MANAGEMENT_RMIREGISTRYHOST}/' /opt/apache-karaf/etc/org.apache.karaf.management.cfg
sed -i 's/#karaf = karaf,_g_:admingroup/karaf = karaf,_g_:admingroup/' /opt/apache-karaf/etc/users.properties
sed -i 's/#_g_\\:admingroup = /_g_\\:admingroup = /' /opt/apache-karaf/etc/users.properties
echo 'java.rmi.server.hostname=172.21.51.155'  >> /opt/apache-karaf/etc/system.properties
exit
docker restart test.4.4.2

Connect to service:jmx:rmi:///jndi/rmi://172.21.51.155:1099/karaf-root was unsuccessful.

Issue Links

• relates to: KARAF-7443 JMX: rmiRegistryHost=0.0.0.0 Runtime IO exception: no such object in table