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kubectl patch — Patch Kubernetes resources with new values. More information: <https://kubernetes.io/docs/reference/

Submitted by: @import:tldr-pages·Mar 2, 2026·

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resourcescommandnewkubectl patchclikuberneteswithpatch

Problem

How to use the kubectl patch command: Patch Kubernetes resources with new values. More information: <https://kubernetes.io/docs/reference/kubectl/generated/kubectl_patch/>.

Solution

kubectl patch — Patch Kubernetes resources with new values. More information: <https://kubernetes.io/docs/reference/kubectl/generated/kubectl_patch/>.

Partially patch a secret using a strategic merge JSON patch to remove the finalizer:

kubectl patch secrets {{secret_name}} {{[-p|--patch]}} '{"metadata":{"finalizers": []\}\}' --type merge

Partially patch a secret using a strategic merge YAML patch to remove the finalizer:

kubectl patch secrets {{secret_name}} {{[-p|--patch]}} 

Partially patch a pod's container using a JSON patch with positional arrays:
kubectl patch {{[po|pods]}} {{pod_name}} --type 'json' {{[-p|--patch]}} '[{"op": "replace", "path": "/spec/containers/0/image", "value":"{{new_image_value}}"}]'


Update a deployment's replicas through the scale subresource using a strategic merge JSON patch:
kubectl patch {{[deploy|deployments]}} {{deployment_name}} --subresource 'scale' --type 'merge' {{[-p|--patch]}} '{"spec":{"replicas":{{number_of_replicas}}\}\}'

metadata:\n finalizers: []' --type merge

Partially patch a pod's container using a JSON patch with positional arrays:
%%CODEBLOCK_2%%

Update a deployment's replicas through the scale subresource using a strategic merge JSON patch:
%%CODEBLOCK_3%%

Code Snippets

Partially patch a secret using a strategic merge JSON patch to remove the finalizer

kubectl patch secrets {{secret_name}} {{[-p|--patch]}} '{"metadata":{"finalizers": []\}\}' --type merge

Partially patch a secret using a strategic merge YAML patch to remove the finalizer

kubectl patch secrets {{secret_name}} {{[-p|--patch]}} $'metadata:\n finalizers: []' --type merge

Partially patch a pod's container using a JSON patch with positional arrays

kubectl patch {{[po|pods]}} {{pod_name}} --type 'json' {{[-p|--patch]}} '[{"op": "replace", "path": "/spec/containers/0/image", "value":"{{new_image_value}}"}]'

Update a deployment's replicas through the scale subresource using a strategic merge JSON patch

kubectl patch {{[deploy|deployments]}} {{deployment_name}} --subresource 'scale' --type 'merge' {{[-p|--patch]}} '{"spec":{"replicas":{{number_of_replicas}}\}\}'

Context

tldr-pages: common/kubectl patch

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