Illumina Innovates with Rancher and Kubernetes
$ ssh -i ssh_privatekey_file user@server
user@server$ docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
See Manage Docker as a non-root user how to set this up properly.
When using RedHat/CentOS as operating system, you cannot use the user root to connect to the nodes because of Bugzilla #1527565. You will need to add a separate user and configure it to access the Docker socket. See RKE OS Requirements for more on how to set this up.
SSH server version is not version 6.7 or higher. This is needed for socket forwarding to work, which is used to connect to the Docker socket over SSH. This can be checked using sshd -V on the host you are connecting to, or using netcat:
$ nc xxx.xxx.xxx.xxx 22
ssh-keygen -y -e -f private_key_file