Persistent volumes

[Dino Lokmic]

I have few machines on Linode and I run Mesos there. Can someone explain to
me, how to set volumes right.

Now I run taks via marathon like this

...

"constraints": [
    [
      "hostname",
      "CLUSTER",
      "HOSTNAME"
    ]
  ],
  "container": {
    "type": "DOCKER",
    "volumes": [
      {
        "containerPath": "/opt/storm/storm-local",
        "hostPath": "/opt/docker_data/storm/storm-local",
        "mode": "RW"
      }
    ],
    "docker": {
      "image": "xxxx",
      "network": "HOST",
      "portMappings": [],
      "privileged": false,
      "parameters": [],
      "forcePullImage": true
    }
  },
...

So if task is restarted I can be sure it has access to previously used data.
You can see I have scaling problem and my task is depending on this node.

I would like for my apps to be node independent and also that they have
redundant data.

What is best practice for this?

I want to scale aplication to 2 instances, I1 and I2

Instance I1 runs on agent A1 and uses volume V1
Instance I2 runs on agent A2 and uses volume V2

If agent A1 stops, I1 is restared to A3 and uses V1
If V1 failes I1 uses copy of data from V3...


Can someone point to article describing this, or at least give me few
"keywords"


Thanks