--- title: kubectl taint content_type: tool-reference weight: 30 auto_generated: true description: >- Update the taints on one or more nodes no_list: true --- ## {{% heading "synopsis" %}} Update the taints on one or more nodes. * A taint consists of a key, value, and effect. As an argument here, it is expressed as key=value:effect. * The key must begin with a letter or number, and may contain letters, numbers, hyphens, dots, and underscores, up to 253 characters. * Optionally, the key can begin with a DNS subdomain prefix and a single '/', like example.com/my-app. * The value is optional. If given, it must begin with a letter or number, and may contain letters, numbers, hyphens, dots, and underscores, up to 63 characters. * The effect must be NoSchedule, PreferNoSchedule or NoExecute. * Currently taint can only apply to node. ``` kubectl taint NODE NAME KEY_1=VAL_1:TAINT_EFFECT_1 ... KEY_N=VAL_N:TAINT_EFFECT_N ``` ## {{% heading "examples" %}} ``` # Update node 'foo' with a taint with key 'dedicated' and value 'special-user' and effect 'NoSchedule' # If a taint with that key and effect already exists, its value is replaced as specified kubectl taint nodes foo dedicated=special-user:NoSchedule # Remove from node 'foo' the taint with key 'dedicated' and effect 'NoSchedule' if one exists kubectl taint nodes foo dedicated:NoSchedule- # Remove from node 'foo' all the taints with key 'dedicated' kubectl taint nodes foo dedicated- # Add a taint with key 'dedicated' on nodes having label myLabel=X kubectl taint node -l myLabel=X dedicated=foo:PreferNoSchedule # Add to node 'foo' a taint with key 'bar' and no value kubectl taint nodes foo bar:NoSchedule ``` ## {{% heading "options" %}}
--all

Select all nodes in the cluster
--allow-missing-template-keys     Default: true

If true, 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-taint"

Name of the manager used to track field ownership.
-h, --help

help for taint
-o, --output string

Output format. One of: (json, yaml, kyaml, name, go-template, go-template-file, template, templatefile, jsonpath, jsonpath-as-json, jsonpath-file).
--overwrite

If true, allow taints to be overwritten, otherwise reject taint updates that overwrite existing taints.
-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.
--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].
--validate string[="strict"]     Default: "strict"

Must be one of: strict (or true), warn, ignore (or false). "true" or "strict" will use a schema to validate the input and fail the request if invalid. It will perform server side validation if ServerSideFieldValidation is enabled on the api-server, but will fall back to less reliable client-side validation if not. "warn" will warn about unknown or duplicate fields without blocking the request if server-side field validation is enabled on the API server, and behave as "ignore" otherwise. "false" or "ignore" will not perform any schema validation, silently dropping any unknown or duplicate fields.
## {{% 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.
--as-user-extra strings

User extras to impersonate for the operation, this flag can be repeated to specify multiple values for the same key.
--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 true, 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=false 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|trace)
--profile-output string     Default: "profile.pprof"

Name of the file to write the profile to
--request-timeout string     Default: "0"

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. 1s, 2m, 3h). 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:8086"

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
--user string

The name of the kubeconfig user to use
--username string

Username for basic authentication to the API server
--version version[=true]

--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](../kubectl/) - kubectl controls the Kubernetes cluster manager