Refactor to support multiple OS's

Signed-off-by: Marcus Noble <github@marcusnoble.co.uk>

home/.bin/kube-ssh

@@ -0,0 +1,91 @@
+#!/usr/bin/env bash
+
+set -e
+
+NAMESPACE="$(kubectl config view --minify --output 'jsonpath={..namespace}')"
+POD="kube-ssh"
+NODE=""
+
+print_usage() {
+  echo "kube-ssh - gain access to a Kubernetes host node (ssh-like for when a host doesn't have ssh)"
+  echo " "
+  echo "kube-ssh [options]"
+  echo " "
+  echo "Options:"
+  echo "-h, --help            show this help text"
+  echo "-n, --namespace       the namespace to launch the pod in"
+  echo "-p, --pod             the name of the pod to launch (default: kube-ssh)"
+  echo "-N, --node            the name of the node to access"
+}
+
+while test $# -gt 0; do
+  case "$1" in
+    -n|--namespace)
+      shift
+      NAMESPACE=$1
+      shift
+      ;;
+    -p|--pod)
+      shift
+      POD=$1
+      shift
+      ;;
+    -N|--node)
+      shift
+      NODE=$1
+      shift
+      ;;
+    -h|--help)
+      print_usage
+      exit 0
+      ;;
+    *)
+      break
+      ;;
+  esac
+done
+
+if [[ "$NODE" == "" ]]; then
+  NODES=$(kubectl get nodes --no-headers -o custom-columns=name:.metadata.name)
+
+  if [ -z "$(which fzf)" ]; then
+    i=0
+    while read -r node; do
+      echo "[$i] - $node"
+      i=$((i+1))
+    done <<< "$NODES"
+    read -p "Which node would you like to connect to? " -r
+    echo ""
+    IFS=$'\n' NODES=($NODES)
+    NODE=${NODES[$REPLY]}
+  else
+    NODE=$(echo "$NODES" | fzf)
+  fi
+fi
+
+
+NODE_NAME=$(kubectl get node $NODE -o template --template='{{index .metadata.labels "kubernetes.io/hostname"}}')
+NODE_SELECTOR='"nodeSelector": { "kubernetes.io/hostname": "'${NODE_NAME}'" },'
+
+kubectl run --namespace ${NAMESPACE} $POD --restart=Never -it --rm --image overriden --overrides '
+{
+  "spec": {
+    "hostPID": true,
+    "hostNetwork": true,
+    '"${NODE_SELECTOR}"'
+    "tolerations": [{
+      "operator": "Exists"
+    }],
+    "containers": [
+      {
+        "name": "kube-ssh",
+        "image": "averagemarcus/kube-ssh:latest",
+        "stdin": true,
+        "tty": true,
+        "securityContext": {
+          "privileged": true
+        }
+      }
+    ]
+  }
+}' --attach