Can t access apache karaf docker container

Question

I have a apache karaf dockerfile but when I try to access it or enter it, it won't let me in

[root@HNHC9F2 docker_file]# docker exec -it b8587543289b /opt/karaf/bin/karaf

karaf: There is a Root instance already running with name root and pid 132. If you know what you are doing and want to force the run anyway, export CHECK_ROOT_INSTANCE_RUNNING=false and re run the command.

Answer 1

I think you should export the environment variable CHECK_ROOT_INSTANCE_RUNNING:

docker exec -it b8587543289b bash 
export CHECK_ROOT_INSTANCE_RUNNING=false
exit

---

docker exec -it b8587543289b /opt/karaf/bin/karaf

and if all you need is to insert a shell inside the container you can use this

docker exec -it b8587543289b bash

Answer 2

To access karaf shell directly you can use following command

docker exec -it b8586730289b /opt/apache/karaf/bin/client