#!/usr/bin/env bash
set -x

NS=${NS:-"default"}
node=${1}
nodeName=$(kubectl get node ${node} -o template --template='{{index .metadata.labels "kubernetes.io/hostname"}}')
nodeSelector='"nodeSelector": { "kubernetes.io/hostname": "'${nodeName:?}'" },'
podName=nsenter-${nodeName}

kubectl run -n ${NS} ${podName:?} --restart=Never -it --rm --image overriden --overrides '
{
  "spec": {
    "hostPID": true,
    "hostNetwork": true,
    '"${nodeSelector?}"'
    "tolerations": [{
        "operator": "Exists"
    }],
    "containers": [
      {
        "name": "nsenter",
        "image": "alexeiled/nsenter:2.34",
        "command": [
          "/nsenter", "-m", "-i", "-u", "-n", "-p", "-r", "-w", "--target=1", "--", "su", "-"
        ],
        "stdin": true,
        "tty": true,
        "securityContext": {
          "privileged": true
        }
      }
    ]
  }
}' --attach "$@"