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Random JQ

Get names and storage class names of PVs of certain storage class

❯ kubectl get pv -ojson | jq -Cr '[.items[] | select ( .spec.storageClassName | length >1 ) | select ( .spec.storageClassName | match ("blob")) | { SC: .spec.storageClassName, NAME: .metadata.name }]'
[
  {
    "SC": "azureblob-fuse-premium",
    "NAME": "azureblob-fuse"
  }
]

List enabled and requested features in your azure subscription

❯ az feature list | jq -r '[.[]|select(.properties.state|test("NotRegistered")|not)|{NAME:.name,STATE:.properties.state}]'
[
  {
    "NAME": "Microsoft.AzureStackHCI/SoftwareAssuranceEnabled",
    "STATE": "Registered"
  },
  {
    "NAME": "Microsoft.Network/AllowUpdateAddressSpaceInPeeredVnets",
    "STATE": "Unregistered"
  },
...
  {
    "NAME": "Microsoft.Storage/HnsSnapshot",
    "STATE": "Pending"
  }
]

Create a formatted string using parent key and value

cat fine.json | jq -r '.transitional_subnets | keys[] as $k | "\($k)#\(.[$k].id)"'

List all Kubernetes PVs that are not CSI and have not set persistentVolumeReclaimPolicy to Retain

kubectl get pv -A -ojson | jq -r '{ pvs: [ .items[] | select(((.spec.csi | length)==0) and (.spec.persistentVolumeReclaimPolicy != "Retain"))]}'