Difference between container port,host port and service port in dcos json in portMappings : <p>I am confused with what all these port signify container port,host port and service port in portMappings, below is my json</p>

<pre><code>"portMappings": [
  {
    "containerPort": 9000,
    "hostPort": 9000,
    "labels": {
      "VIP_0": "/app2n:9000"
    },
    "protocol": "tcp",
    "servicePort": 10101
  }
]
</code></pre>
