v1.NodeAffinity

{
    "preferredDuringSchedulingIgnoredDuringExecution": [
        {
            "preference": {
                "matchExpressions": [
                    {
                        "key": "string",
                        "operator": "string",
                        "values": [
                            "string"
                        ]
                    }
                ],
                "matchFields": [
                    {
                        "key": "string",
                        "operator": "string",
                        "values": [
                            "string"
                        ]
                    }
                ]
            },
            "weight": 0
        }
    ],
    "requiredDuringSchedulingIgnoredDuringExecution": {
        "nodeSelectorTerms": [
            {
                "matchExpressions": [
                    {
                        "key": "string",
                        "operator": "string",
                        "values": [
                            "string"
                        ]
                    }
                ],
                "matchFields": [
                    {
                        "key": "string",
                        "operator": "string",
                        "values": [
                            "string"
                        ]
                    }
                ]
            }
        ]
    }
}