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Docker exec: Unsupported: Exec is not supported by the lxc driver


(Jonathan L Tronson) #1

I am using RHEL 6.6 (2.6.32-504.el6.x86_64) and when I try to fire up bash inside a running container with Docker exec I get this error:

$ docker exec -it 2acd76422b4f bash
2014/11/21 23:04:11 Error response from daemon: Unsupported: Exec is not supported by the lxc driver

$ docker version
Client version: 1.3.1
Client API version: 1.15
Go version (client): go1.3.3
Git commit (client): 4e9bbfa
OS/Arch (client): linux/amd64
Server version: 1.3.1
Server API version: 1.15
Go version (server): go1.3.3
Git commit (server): 4e9bbfa


(Sven Dowideit) #2

Heya Jonathan,

yup, that’s correct. The maintainers of the docker lxc driver have not implemented the needed infrastructure to support it.

If you are able to do the work, or know someone that can, perhaps you can persuade them to show it some love :smile:

Sven