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hardkubectl

Install a CustomResourceDefinition into the cluster from a YAML manifest

command

kubectl apply -f crd.yaml

also accepted

kubectl apply -f

Command breakdown

Part of the Kubernetes CLI (kubectl) — kubectl Advanced category.

kubectlapply-fcrd.yaml

Flag	Purpose
`-f`	Boolean flag

More kubectl Advanced commands

Create a Role that allows getting and listing pods in the current namespacekubectl create role POD_READER --verb=get,list --resource=pods
Create a ClusterRole that allows reading secrets across all namespaceskubectl create clusterrole SECRET_READER --verb=get,list --resource=secrets
Bind a Role to a user so that user gains those permissions in the current namespacekubectl create rolebinding ALICE_READER --role=pod-reader --user=alice
Bind a ClusterRole to a user, granting those permissions across the entire clusterkubectl create clusterrolebinding ADMIN_BINDING --clusterrole=cluster-admin --user=admin
Apply a NetworkPolicy manifest from a file to restrict pod-to-pod traffickubectl apply -f network-policy.yaml
List all CustomResourceDefinitions installed in the clusterkubectl get crds
Create a service account in a specific namespacekubectl create serviceaccount APP_SA -n prod
List all RoleBindings across every namespace in the clusterkubectl get rolebindings --all-namespaces

See all kubectl Advanced commands →

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