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27 lines
1.1 KiB
Plaintext
27 lines
1.1 KiB
Plaintext
---
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syntax: markdown
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tags: [tldr, common]
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source: https://github.com/tldr-pages/tldr.git
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---
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# kubectl patch
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> Patch Kubernetes resources with new values.
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> More information: <https://kubernetes.io/docs/reference/kubectl/generated/kubectl_patch/>.
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- Partially patch a secret using a strategic merge JSON patch to remove the finalizer:
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`kubectl patch secrets {{secret_name}} {{[-p|--patch]}} '{"metadata":{"finalizers": []\}\}' --type merge`
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- Partially patch a secret using a strategic merge YAML patch to remove the finalizer:
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`kubectl patch secrets {{secret_name}} {{[-p|--patch]}} $'metadata:
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finalizers: []' --type merge`
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- Partially patch a pod's container using a JSON patch with positional arrays:
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`kubectl patch {{[po|pods]}} {{pod_name}} --type 'json' {{[-p|--patch]}} '[{"op": "replace", "path": "/spec/containers/0/image", "value":"{{new_image_value}}"}]'`
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- Update a deployment's replicas through the scale subresource using a strategic merge JSON patch:
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`kubectl patch {{[deploy|deployments]}} {{deployment_name}} --subresource 'scale' --type 'merge' {{[-p|--patch]}} '{"spec":{"replicas":{{number_of_replicas}}\}\}'`
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