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"
}
]
}
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
You can find the complete documentation for the query parameter here.