Nomad: [Improvement] Docker exec from Nomad binary

[samber]

Hi guys,

It would be awesome to add a command in Nomad, to execute some command in a container. (something like kubectl exec or docker exec).

Unfortunately, this is specific to docker driver. Do you know how we could manage that ?

[dadgar]

For now you would have to ssh and then execute the docker exec command but this is something interesting to us

[Dgadavin]

+1
I think it will be very usefull

[margueritepd]

This would be useful for giving our dev team access to debug from the point of view of their running application without giving them SSH access.

[aknuds1]

We could also really use this, as we miss the ability of executing interactive shells within containers running in the cluster. In Kubernetes we would do this with a command like kubectl exec -ti $POD /bin/bash.

[42wim]

We had the same issue, so I've build a tool that does this.
It's a sshserver that sits inbetween dev and nomad, you can use plain ssh for commands or use the simple nomadctl wrapper. Authentication via ssh keys.

See https://github.com/42wim/nomadctld for more info

[margueritepd]

Any thoughts about the priority of this item / if it would end up on the roadmap any time soon?

[preetapan]

@margueritepd building a nomad exec capability is on the roadmap for a minor release after 0.9 is out.

[IceKickr]

Any guesstimates on rough timeline for this feature being implemented?

[josegonzalez]

SeatGeek has https://github.com/seatgeek/nomad-helper#attach

[josegonzalez]

Actually coming back to this, does alloc exec do what we need for this?

[drewbailey]

It does indeed, closing!

https://www.nomadproject.io/docs/commands/alloc/exec.html