kubectl find

It's a plugin for kubectl that gives you a UNIX find-like experience.

Find resource based on

• name regex
• age
• labels
• status
• node name (for pods only)
• restarts (for pods only)
• image name (for pods only)
• jq filter - custom condition

and then print, patch or delete any.

Usage

kubectl fd [resource type | pods] [flags]

Flags:
  -r, --name string                    Regular expression to match resource names against; if not specified, all resources of the specified type will be returned.
  -n, --namespace string               If present, the namespace scope for this CLI request
  -A, --all-namespaces                 Search in all namespaces; if not specified, only the current namespace will be searched.
      --status string                  Filter pods by their status (phase); e.g. 'Running', 'Pending', 'Succeeded', 'Failed', 'Unknown'.
      --image string                   Regular expression to match container images against.
  -j, --jq string                      jq expression to filter resources; Uses gojq library for evaluation.
      --restarted                      Find pods that have been restarted at least once.
  -l, --selector string                Label selector to filter resources by labels.
      --max-age string                 Filter resources by maximum age; e.g. '2d' for 2 days, '3h' for 3 hours, etc.
      --min-age string                 Filter resources by minimum age; e.g. '2d' for 2 days, '3h' for 3 hours, etc.
      --node string                    Filter pods by node name regex; Uses pod.Spec.NodeName or pod.Status.NominatedNodeName if the former is empty.
  -h, --help                           help for kubectl find
  -p, --patch string                   Patch all found resources with the specified JSON patch.
  -e, --exec string                    Execute a command on all found pods.
      --delete                         Delete all matched resources.
  -f, --force                          Skip confirmation prompt before performing actions on resources.

Install

Using krew

krew install fd

Download binary

Download latest release for your platform/os and save it under $PATH as kubectl-fd

Examples

Filter by jq

Based on gojq implementation of jq. Check resource structure on kubespec.dev.

Find pods with empty nodeSelector

kubectl fd pods -j '.spec.nodeSelector == null' -A

Find pods with undefined resources

kubectl fd pods -j 'any( .spec.containers[]; .resources == {} )' -A

Filter using regex

Instead of

kubectl get pods -o name | grep test

Run

kubectl fd -r test

Filter by resource age

kubectl fd cm --min-age 1d -A --name spark

Execute command on several pods

kubectl fd pods -l app=nginx --exec 'nginx -s reload'

Find all failed pods and delete them

kubectl fd pods --status failed -A --delete

Find restarted pods

kubectl fd --restarted

Completion

Copy kubectl_complete-fd script somewhere under PATH.

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