ssh context timed out (workaround: ControlPersist)

[AkihiroSuda]

$ docker context create my-arm-instance --docker host=ssh://me@my-arm-instance
$ docker buildx ls
NAME/NODE         DRIVER/ENDPOINT  STATUS PLATFORMS
my-arm-instance   docker                  
  my-arm-instance my-arm-instance  listing workers: failed to list workers: rpc error: code = DeadlineExceeded desc = context deadline exceeded
...

A workaround is to set ControlPersist in ~/.ssh/config:

ControlMaster auto
ControlPath ~/.ssh/control-%C
ControlPersist yes

This workaroud is not needed for docker --context=my-arm-instance info|version|run.

BuildX version: v0.4.1

[tonistiigi]

Is it just that making a new connection takes longer than the timeout or something else? One way to try would be to make the timeout configurable.

[tonistiigi]

Is this duplicate of #358 ?

[AkihiroSuda]

Probably yes