# Create an Amazon EKS MNP job definition
<a name="mnp-eks-create-eks-mnp-job-definition"></a>

To define and run MNP jobs on Amazon EKS, there are new parameters within the [https://docs.aws.amazon.com/batch/latest/APIReference/API_RegisterJobDefinition.html](https://docs.aws.amazon.com/batch/latest/APIReference/API_RegisterJobDefinition.html) and [https://docs.aws.amazon.com/batch/latest/APIReference/API_SubmitJob.html](https://docs.aws.amazon.com/batch/latest/APIReference/API_SubmitJob.html) API operations. 
+ Use [https://docs.aws.amazon.com/batch/latest/APIReference/API_EksProperties.html](https://docs.aws.amazon.com/batch/latest/APIReference/API_EksProperties.html) under the [https://docs.aws.amazon.com/batch/latest/APIReference/API_NodeProperties.html](https://docs.aws.amazon.com/batch/latest/APIReference/API_NodeProperties.html) section to define your MNP job definition.
+ Use [https://docs.aws.amazon.com/batch/latest/APIReference/API_EksPropertiesOverride.html](https://docs.aws.amazon.com/batch/latest/APIReference/API_EksPropertiesOverride.html) under the [https://docs.aws.amazon.com//batch/latest/APIReference/API_NodePropertyOverride.html](https://docs.aws.amazon.com//batch/latest/APIReference/API_NodePropertyOverride.html) section to override the parameters defined in the job definition when submitting an MNP job.

These actions can be defined through API operations and the AWS Management Console.

## Reference: Register the Amazon EKS MNP job definition request payload
<a name="mnp-eks-register-eks-mnp-job-definition"></a>

The following example illustrates how you can register an Amazon EKS MNP job definition with two nodes.

```
{
  "jobDefinitionName": "MyEksMnpJobDefinition",
  "type": "multinode",
  "nodeProperties": {
    "numNodes": 2,
    "mainNode": 0,
    "nodeRangeProperties": [
      {
        "targetNodes" : "0:",
        "eksProperties": {
          "podProperties": {
            "containers": [
              {
                "name": "test-eks-container-1",
                "image": "public.ecr.aws/amazonlinux/amazonlinux:2",
                "command": [
                  "sleep",
                  "60"
                ],
                "resources": {
                  "limits": {
                    "cpu": "1",
                    "memory": "1024Mi"
                  }
                },
                "securityContext":{
                  "runAsUser":1000,
                  "runAsGroup":3000,
                  "privileged":true,
                  "readOnlyRootFilesystem":true,
                  "runAsNonRoot":true
               }
              }
            ],
            "initContainers": [
               {
                  "name":"init-ekscontainer",
                  "image": "public.ecr.aws/amazonlinux/amazonlinux:2",
                  "command": [
                     "echo",
                     "helloWorld"
                   ],
                   "resources": {
                     "limits": {
                       "cpu": "1",
                       "memory": "1024Mi"
                     }
                  }
               }
            ],
            "metadata": {
               "labels": {
                  "environment" : "test"
               }
            }
          }
        }
      }
    ]
  }
}
```

To register the job definition using the AWS CLI, copy the definition to a local file named *MyEksMnpJobDefinition.json* and run the following command.

```
aws batch register-job-definition --cli-input-json file://MyEksMnpJobDefinition.json
```

You will receive the following JSON response.

```
{
    "jobDefinitionName": "MyEksMnpJobDefinition",
    "jobDefinitionArn": "arn:aws:batch:us-east-1:0123456789:job-definition/MyEksMnpJobDefinition:1",
    "revision": 1
}
```