kubernetes: ssh_into_kubelet.sh for Linux

Only with networking in bridge (or probably tap) modes, not user mode.

Signed-off-by: Ian Campbell <ijc@docker.com>

projects/kubernetes/ssh_into_kubelet.sh

@@ -1,9 +1,18 @@
-#!/bin/bash -eux
-ssh="docker run --rm -ti \
-  -v $HOME/.ssh/:/root/.ssh \
-    ijc25/alpine-ssh \
-	-o LogLevel=FATAL \
+#!/bin/bash -eu
+
+sshopts="-o LogLevel=FATAL \
 	 -o StrictHostKeyChecking=no \
 	 -o UserKnownHostsFile=/dev/null \
 	 -o IdentitiesOnly=yes"
-$ssh -t root@"$1" ctr exec --tty --exec-id ssh kubelet ash -l
+
+case $(uname -s) in
+    Linux)
+	ssh=ssh
+	;;
+    *)
+	ssh="docker run --rm -ti \
+	  -v $HOME/.ssh/:/root/.ssh \
+	    ijc25/alpine-ssh"
+	;;
+esac
+$ssh $sshopts -t root@"$1" ctr exec --tty --exec-id ssh kubelet ash -l