how to ssh docker container

Question

I am running the container hypriot/rpi-busybox-httpd

I am trying to ssh to docker container: but it is giving error :

pi@raspberrypi:~ $         


        

Answer 1

You might need to specify the full path to bash, e.g.:

docker exec -it cc55da85b915 /bin/bash

or /usr/local/bin/bash, or wherever bash is located in that image.

Hope this helps!

Answer 2

For Alpine based image, docker exec -ti cc55da85b915 /bin/sh and docker exec -ti cc55da85b915 ls /etc worked. As suggested by 'Esteban Collado'.

However for other Linux versions I use, docker exec -ti cc55da85b915 bash

Answer 3

The image you're using seems that it doesn't have the binary /bin/bash installed but it should have /bin/sh

Try:

docker exec -it cc55da85b915 sh

Answer 4

This will also relevant for Kubernetes pods.

For example if you'll try to connect to a pod which doesn't contain the shell you specified:

kubectl exec -it some-busybox-pod bash

(busybox have sh on it not bash).

You'll end up with the same error:

OCI runtime exec failed: exec failed: container_linux.go:349: starting container process caused "exec: \"bash\": executable file not found in $PATH": unknown
command terminated with exit code 126

Answer 5

It could be your image does not have the binary /bin/bash installed (as suggested before), I had the same problem and I was able to enter into the container using /bin/sh

docker exec -ti cc55da85b915 /bin/sh

Another workaround could be execute directly the commands without get access to any shell.

docker exec -ti cc55da85b915 ls /etc

Answer 6

You have many different ways to do that, you can attach using docker's attach command.

$ sudo docker attach cc55da85b915 #by ID

Or you can use docker exec command:

$ sudo docker exec -i -t cc55da85b915 /bin/bash

If /bin/bash fails, you can use /bin/sh that works in more containers:

$ sudo docker exec -i -t cc55da85b915 /bin/sh