1KUBERNETES(1)                      Jan 2015                      KUBERNETES(1)
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NAME

6       kubectl taint - Update the taints on one or more nodes
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SYNOPSIS

11       kubectl taint [OPTIONS]
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DESCRIPTION

16       Update the taints on one or more nodes.
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18       0
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20              item  A  taint consists of a key, value, and effect. As an argu‐
21              ment here, it is expressed as key=value:effect.
22              item The key must begin with a letter or number, and may contain
23              letters,  numbers,  hyphens,  dots,  and underscores, up to  253
24              characters.
25              item Optionally, the key can begin with a DNS  subdomain  prefix
26              and a single '/', like example.com/my-app
27              item  The value must begin with a letter or number, and may con‐
28              tain letters, numbers, hyphens, dots, and underscores, up to  63
29              characters.
30              item  The  effect must be NoSchedule, PreferNoSchedule or NoExe‐
31              cute.
32              item Currently taint can only apply to node.
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OPTIONS

36       --all=false
37           Select all nodes in the cluster
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40       --allow-missing-template-keys=true
41           If true, ignore any errors in templates when a field or map key  is
42       missing  in  the  template.  Only applies to golang and jsonpath output
43       formats.
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46       -o, --output=""
47           Output   format.   One    of:    json|yaml|name|go-template|go-tem‐
48       plate-file|template|templatefile|jsonpath|jsonpath-file.
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51       --overwrite=false
52           If  true,  allow  taints  to be overwritten, otherwise reject taint
53       updates that overwrite existing taints.
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56       -l, --selector=""
57           Selector (label query)  to  filter  on,  supports  '=',  '==',  and
58       '!='.(e.g. -l key1=value1,key2=value2)
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61       --template=""
62           Template  string  or  path  to template file to use when -o=go-tem‐
63       plate, -o=go-template-file. The template format is golang  templates  [
64http://golang.org/pkg/text/template/#pkg-overview⟩].
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67       --validate=true
68           If true, use a schema to validate the input before sending it
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OPTIONS INHERITED FROM PARENT COMMANDS

73       --alsologtostderr=false
74           log to standard error as well as files
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77       --application-metrics-count-limit=100
78           Max number of application metrics to store (per container)
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81       --as=""
82           Username to impersonate for the operation
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85       --as-group=[]
86           Group  to  impersonate for the operation, this flag can be repeated
87       to specify multiple groups.
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90       --azure-container-registry-config=""
91           Path to the file containing Azure container registry  configuration
92       information.
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95       --boot-id-file="/proc/sys/kernel/random/boot_id"
96           Comma-separated  list  of files to check for boot-id. Use the first
97       one that exists.
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100       --cache-dir="/builddir/.kube/http-cache"
101           Default HTTP cache directory
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104       --certificate-authority=""
105           Path to a cert file for the certificate authority
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108       --client-certificate=""
109           Path to a client certificate file for TLS
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112       --client-key=""
113           Path to a client key file for TLS
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116       --cloud-provider-gce-lb-src-cidrs=130.211.0.0/22,209.85.152.0/22,209.85.204.0/22,35.191.0.0/16
117           CIDRs opened in GCE firewall for LB traffic proxy  health checks
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120       --cluster=""
121           The name of the kubeconfig cluster to use
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124       --container-hints="/etc/cadvisor/container_hints.json"
125           location of the container hints file
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128       --containerd="unix:///var/run/containerd.sock"
129           containerd endpoint
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132       --context=""
133           The name of the kubeconfig context to use
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136       --default-not-ready-toleration-seconds=300
137           Indicates    the    tolerationSeconds   of   the   toleration   for
138       notReady:NoExecute that is added by default to every pod that does  not
139       already have such a toleration.
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142       --default-unreachable-toleration-seconds=300
143           Indicates  the  tolerationSeconds  of  the  toleration for unreach‐
144       able:NoExecute that is added by default to  every  pod  that  does  not
145       already have such a toleration.
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148       --docker="unix:///var/run/docker.sock"
149           docker endpoint
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152       --docker-env-metadata-whitelist=""
153           a  comma-separated  list of environment variable keys that needs to
154       be collected for docker containers
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157       --docker-only=false
158           Only report docker containers in addition to root stats
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161       --docker-root="/var/lib/docker"
162           DEPRECATED: docker root is read from docker info (this is  a  fall‐
163       back, default: /var/lib/docker)
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166       --docker-tls=false
167           use TLS to connect to docker
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170       --docker-tls-ca="ca.pem"
171           path to trusted CA
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174       --docker-tls-cert="cert.pem"
175           path to client certificate
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178       --docker-tls-key="key.pem"
179           path to private key
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182       --enable-load-reader=false
183           Whether to enable cpu load reader
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186       --event-storage-age-limit="default=0"
187           Max length of time for which to store events (per type). Value is a
188       comma separated list of key values, where  the  keys  are  event  types
189       (e.g.: creation, oom) or "default" and the value is a duration. Default
190       is applied to all non-specified event types
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193       --event-storage-event-limit="default=0"
194           Max number of events to store (per type). Value is  a  comma  sepa‐
195       rated  list  of  key values, where the keys are event types (e.g.: cre‐
196       ation, oom) or "default" and  the  value  is  an  integer.  Default  is
197       applied to all non-specified event types
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200       --global-housekeeping-interval=1m0s
201           Interval between global housekeepings
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204       --housekeeping-interval=10s
205           Interval between container housekeepings
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208       --insecure-skip-tls-verify=false
209           If true, the server's certificate will not be checked for validity.
210       This will make your HTTPS connections insecure
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213       --kubeconfig=""
214           Path to the kubeconfig file to use for CLI requests.
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217       --log-backtrace-at=:0
218           when logging hits line file:N, emit a stack trace
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221       --log-cadvisor-usage=false
222           Whether to log the usage of the cAdvisor container
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225       --log-dir=""
226           If non-empty, write log files in this directory
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229       --log-file=""
230           If non-empty, use this log file
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233       --log-flush-frequency=5s
234           Maximum number of seconds between log flushes
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237       --logtostderr=true
238           log to standard error instead of files
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241       --machine-id-file="/etc/machine-id,/var/lib/dbus/machine-id"
242           Comma-separated list of files to  check  for  machine-id.  Use  the
243       first one that exists.
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246       --match-server-version=false
247           Require server version to match client version
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250       --mesos-agent="127.0.0.1:5051"
251           Mesos agent address
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254       --mesos-agent-timeout=10s
255           Mesos agent timeout
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258       -n, --namespace=""
259           If present, the namespace scope for this CLI request
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262       --password=""
263           Password for basic authentication to the API server
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266       --profile="none"
267           Name of profile to capture. One of (none|cpu|heap|goroutine|thread‐
268       create|block|mutex)
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271       --profile-output="profile.pprof"
272           Name of the file to write the profile to
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275       --request-timeout="0"
276           The length of time to wait before giving  up  on  a  single  server
277       request. Non-zero values should contain a corresponding time unit (e.g.
278       1s, 2m, 3h). A value of zero means don't timeout requests.
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281       -s, --server=""
282           The address and port of the Kubernetes API server
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285       --skip-headers=false
286           If true, avoid header prefixes in the log messages
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289       --stderrthreshold=2
290           logs at or above this threshold go to stderr
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293       --storage-driver-buffer-duration=1m0s
294           Writes in the storage driver will be buffered  for  this  duration,
295       and committed to the non memory backends as a single transaction
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298       --storage-driver-db="cadvisor"
299           database name
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302       --storage-driver-host="localhost:8086"
303           database host:port
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306       --storage-driver-password="root"
307           database password
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310       --storage-driver-secure=false
311           use secure connection with database
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314       --storage-driver-table="stats"
315           table name
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318       --storage-driver-user="root"
319           database username
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322       --token=""
323           Bearer token for authentication to the API server
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326       --user=""
327           The name of the kubeconfig user to use
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330       --username=""
331           Username for basic authentication to the API server
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334       -v, --v=0
335           log level for V logs
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338       --version=false
339           Print version information and quit
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342       --vmodule=
343           comma-separated  list  of pattern=N settings for file-filtered log‐
344       ging
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EXAMPLE

349                # Update node 'foo' with a taint with key 'dedicated' and value 'special-user' and effect 'NoSchedule'.
350                # If a taint with that key and effect already exists, its value is replaced as specified.
351                kubectl taint nodes foo dedicated=special-user:NoSchedule
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353                # Remove from node 'foo' the taint with key 'dedicated' and effect 'NoSchedule' if one exists.
354                kubectl taint nodes foo dedicated:NoSchedule-
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356                # Remove from node 'foo' all the taints with key 'dedicated'
357                kubectl taint nodes foo dedicated-
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359                # Add a taint with key 'dedicated' on nodes having label mylabel=X
360                kubectl taint node -l myLabel=X  dedicated=foo:PreferNoSchedule
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SEE ALSO

366       kubectl(1),
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HISTORY

371       January 2015, Originally compiled by Eric Paris (eparis at  redhat  dot
372       com)  based  on the kubernetes source material, but hopefully they have
373       been automatically generated since!
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377Eric Paris                  kubernetes User Manuals              KUBERNETES(1)
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