从名称获取AWS EMR集群ID [英] Get AWS EMR Cluster ID from Name

问题描述

AWS CLI命令 aws emr list-clusters 返回以下json.是否可以通过bash或groovy来使用Name来获取ID?我不能只使用Id，因为我要删除群集并仅使用相同的名称来重建它们.因此，我知道集群的名称是"my-cluster"，我想以某种方式使用它来获取集群的ID.最终的情况是我实际上想要群集的Master公共DNS.

AWS CLI command aws emr list-clusters returns the following json. Is there a way through bash or groovy that I can use the Name to get the Id? I can't just use the Id becauseI am deleting clusters and rebuilding them with only the same name. So I know the name of the cluster is "my-cluster" and I would like to use it somehow to get the Id of the cluster. End case is I actually want the Master public DNS of the cluster.

    {
        "Clusters": [
        {
            "Status": {
                "Timeline": {
                "ReadyDateTime": 1433200405.353,
                "CreationDateTime": 1433199926.596
            },
            "State": "WAITING",
            "StateChangeReason": {
                "Message": "Waiting after step completed"
                }
            },
            "NormalizedInstanceHours": 6,
            "Id": "j-3SD91U2E1L2QX",
            "Name": "my-cluster"
        },
        {
            "Status": {
                "Timeline": {
                    "ReadyDateTime": 1433200405.353,
                    "CreationDateTime": 1433199926.596
            },
            "State": "WAITING",
            "StateChangeReason": {
                "Message": "Waiting after step completed"
            }
        },
        "NormalizedInstanceHours": 6,
        "Id": "j-3S281UEK8L2LW",
        "Name": "my-cluster2"
        }
    ]
    }

推荐答案

您可以使用 query 参数来实现您要尝试的功能.该命令将如下所示:

You can use the query parameter to achieve what you are trying. The command will look like below:

aws emr list-clusters --query 'Clusters[?Name==`my-cluster`].Id' --output text

您可以找到 query 参数的完整文档

You can find the complete documentation for the query parameter here.

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