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Merge pull request #29639 from zlatin/fix-duplicate 

Fix duplicate words in kubectl overview
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Kubernetes Prow Robot 2021-09-12 13:24:06 -07:00 committed by GitHub
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content/en/docs/reference/kubectl/overview.md
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@ -75,7 +75,7 @@ If you need help, run `kubectl help` from the terminal window.
By default `kubectl` will first determine if it is running within a pod, and thus in a cluster. It starts by checking for the `KUBERNETES_SERVICE_HOST` and `KUBERNETES_SERVICE_PORT` environment variables and the existence of a service account token file at `/var/run/secrets/kubernetes.io/serviceaccount/token`. If all three are found in-cluster authentication is assumed.
To maintain backwards compatibility, if the `POD_NAMESPACE` environment variable is set during in-cluster authentication it will override the default namespace from the from the service account token. Any manifests or tools relying on namespace defaulting will be affected by this.
To maintain backwards compatibility, if the `POD_NAMESPACE` environment variable is set during in-cluster authentication it will override the default namespace from the service account token. Any manifests or tools relying on namespace defaulting will be affected by this.
**`POD_NAMESPACE` environment variable**