Getting the error
jq: error: syntax error, unexpected if (Unix shell quoting issues?) at <top-level> while parsing kubernetes kubectl command,
kubectl get pv -o=json | jq -c '.items[] | {name: .metadata.name, claimName: .spec | if has("claimRef") then .claimRef.name else empty end }'Trying to get the PV's which have PVC and if there are no PVC can be null of empty. For it uilding a map of name and their respective PVC if there otherwise empty or null.
Below is a sample input to the jq command or the out put of the command kubectl get pv -o=json
{
"apiVersion": "v1",
"items": [{
"apiVersion": "v1",
"kind": "PersistentVolume",
"metadata": {
"annotations": {
"meta.helm.sh/release-name": "",
"meta.helm.sh/release-namespace": ""
},
"creationTimestamp": "",
"finalizers": [
""
],
"labels": {
"app.kubernetes.io/managed-by": ""
},
"name": "",
"resourceVersion": "",
"uid": ""
},
"spec": {
"accessModes": [
"ReadWriteMany"
],
"capacity": {
"storage": ""
},
"claimRef": {
"apiVersion": "",
"kind": "",
"name": "",
"namespace": "",
"resourceVersion": "",
"uid": ""
},
"csi": {
"driver": "",
"volumeHandle": ""
},
"persistentVolumeReclaimPolicy": "",
"volumeMode": ""
},
"status": {
"phase": ""
}
},
{
"apiVersion": "v1",
"kind": "PersistentVolume",
"metadata": {
"annotations": {
"meta.helm.sh/release-name": "",
"meta.helm.sh/release-namespace": ""
},
"creationTimestamp": "",
"finalizers": [
""
],
"labels": {
"app.kubernetes.io/managed-by": ""
},
"name": "",
"resourceVersion": "",
"uid": ""
},
"spec": {
"accessModes": [
"ReadWriteMany"
],
"capacity": {
"storage": ""
},
"claimRef": {
"apiVersion": "",
"kind": "",
"name": "",
"namespace": "",
"resourceVersion": "",
"uid": ""
},
"csi": {
"driver": "",
"volumeHandle": ""
},
"persistentVolumeReclaimPolicy": "",
"volumeMode": ""
},
"status": {
"phase": ""
}
}
],
"kind": "List",
"metadata": {
"resourceVersion": "",
"selfLink": ""
}
}
For data security have removed the data and only kept the keys Please help
Put parentheses around the value of the claimName field:
{
name: .metadata.name,
claimName: (.spec | if has("claimRef") then .claimRef.name else empty end)
}
Depending on how much you simplified your example, you may consider reducing the the if statement to:
{
name: .metadata.name,
claimName: (.spec.claimRef.name? // empty)
}
Note that in both cases not just .claimName but the whole object will disappear if the respective test is going to fail.