1KUBERNETES(1) Jan 2015 KUBERNETES(1)
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6 kubectl exec - Execute a command in a container
7
11 kubectl exec [OPTIONS]
12
16 Execute a command in a container.
17
21 -c, --container=""
22 Container name. If omitted, the first container in the pod will be
23 chosen
24 -f, --filename=[]
27 to use to exec into the resource
28 --pod-running-timeout=1m0s
31 The length of time (like 5s, 2m, or 3h, higher than zero) to wait
32 until at least one pod is running
33 -i, --stdin=false
36 Pass stdin to the container
37 -t, --tty=false
40 Stdin is a TTY
41
45 --add-dir-header=false
46 If true, adds the file directory to the header
47 --alsologtostderr=false
50 log to standard error as well as files
51 --application-metrics-count-limit=100
54 Max number of application metrics to store (per container)
55 --as=""
58 Username to impersonate for the operation
59 --as-group=[]
62 Group to impersonate for the operation, this flag can be repeated
63 to specify multiple groups.
64 --azure-container-registry-config=""
67 Path to the file containing Azure container registry configuration
68 information.
69 --boot-id-file="/proc/sys/kernel/random/boot_id"
72 Comma-separated list of files to check for boot-id. Use the first
73 one that exists.
74 --cache-dir="/builddir/.kube/http-cache"
77 Default HTTP cache directory
78 --certificate-authority=""
81 Path to a cert file for the certificate authority
82 --client-certificate=""
85 Path to a client certificate file for TLS
86 --client-key=""
89 Path to a client key file for TLS
90 --cloud-provider-gce-l7lb-src-cidrs=130.211.0.0/22,35.191.0.0/16
93 CIDRs opened in GCE firewall for L7 LB traffic proxy health checks
94 --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
97 CIDRs opened in GCE firewall for L4 LB traffic proxy health checks
98 --cluster=""
101 The name of the kubeconfig cluster to use
102 --container-hints="/etc/cadvisor/container_hints.json"
105 location of the container hints file
106 --containerd="/run/containerd/containerd.sock"
109 containerd endpoint
110 --containerd-namespace="k8s.io"
113 containerd namespace
114 --context=""
117 The name of the kubeconfig context to use
118 --default-not-ready-toleration-seconds=300
121 Indicates the tolerationSeconds of the toleration for
122 notReady:NoExecute that is added by default to every pod that does not
123 already have such a toleration.
124 --default-unreachable-toleration-seconds=300
127 Indicates the tolerationSeconds of the toleration for
128 unreachable:NoExecute that is added by default to every pod that does
129 not already have such a toleration.
130 --disable-root-cgroup-stats=false
133 Disable collecting root Cgroup stats
134 --docker="unix:///var/run/docker.sock"
137 docker endpoint
138 --docker-env-metadata-whitelist=""
141 a comma-separated list of environment variable keys that needs to
142 be collected for docker containers
143 --docker-only=false
146 Only report docker containers in addition to root stats
147 --docker-root="/var/lib/docker"
150 DEPRECATED: docker root is read from docker info (this is a
151 fallback, default: /var/lib/docker)
152 --docker-tls=false
155 use TLS to connect to docker
156 --docker-tls-ca="ca.pem"
159 path to trusted CA
160 --docker-tls-cert="cert.pem"
163 path to client certificate
164 --docker-tls-key="key.pem"
167 path to private key
168 --enable-load-reader=false
171 Whether to enable cpu load reader
172 --event-storage-age-limit="default=0"
175 Max length of time for which to store events (per type). Value is a
176 comma separated list of key values, where the keys are event types
177 (e.g.: creation, oom) or "default" and the value is a duration. Default
178 is applied to all non-specified event types
179 --event-storage-event-limit="default=0"
182 Max number of events to store (per type). Value is a comma
183 separated list of key values, where the keys are event types (e.g.:
184 creation, oom) or "default" and the value is an integer. Default is
185 applied to all non-specified event types
186 --global-housekeeping-interval=1m0s
189 Interval between global housekeepings
190 --housekeeping-interval=10s
193 Interval between container housekeepings
194 --insecure-skip-tls-verify=false
197 If true, the server's certificate will not be checked for validity.
198 This will make your HTTPS connections insecure
199 --kubeconfig=""
202 Path to the kubeconfig file to use for CLI requests.
203 --log-backtrace-at=:0
206 when logging hits line file:N, emit a stack trace
207 --log-cadvisor-usage=false
210 Whether to log the usage of the cAdvisor container
211 --log-dir=""
214 If non-empty, write log files in this directory
215 --log-file=""
218 If non-empty, use this log file
219 --log-file-max-size=1800
222 Defines the maximum size a log file can grow to. Unit is megabytes.
223 If the value is 0, the maximum file size is unlimited.
224 --log-flush-frequency=5s
227 Maximum number of seconds between log flushes
228 --logtostderr=true
231 log to standard error instead of files
232 --machine-id-file="/etc/machine-id,/var/lib/dbus/machine-id"
235 Comma-separated list of files to check for machine-id. Use the
236 first one that exists.
237 --match-server-version=false
240 Require server version to match client version
241 -n, --namespace=""
244 If present, the namespace scope for this CLI request
245 --password=""
248 Password for basic authentication to the API server
249 --profile="none"
252 Name of profile to capture. One of
253 (none|cpu|heap|goroutine|threadcreate|block|mutex)
254 --profile-output="profile.pprof"
257 Name of the file to write the profile to
258 --request-timeout="0"
261 The length of time to wait before giving up on a single server
262 request. Non-zero values should contain a corresponding time unit (e.g.
263 1s, 2m, 3h). A value of zero means don't timeout requests.
264 -s, --server=""
267 The address and port of the Kubernetes API server
268 --skip-headers=false
271 If true, avoid header prefixes in the log messages
272 --skip-log-headers=false
275 If true, avoid headers when opening log files
276 --stderrthreshold=2
279 logs at or above this threshold go to stderr
280 --storage-driver-buffer-duration=1m0s
283 Writes in the storage driver will be buffered for this duration,
284 and committed to the non memory backends as a single transaction
285 --storage-driver-db="cadvisor"
288 database name
289 --storage-driver-host="localhost:8086"
292 database host:port
293 --storage-driver-password="root"
296 database password
297 --storage-driver-secure=false
300 use secure connection with database
301 --storage-driver-table="stats"
304 table name
305 --storage-driver-user="root"
308 database username
309 --tls-server-name=""
312 Server name to use for server certificate validation. If it is not
313 provided, the hostname used to contact the server is used
314 --token=""
317 Bearer token for authentication to the API server
318 --update-machine-info-interval=5m0s
321 Interval between machine info updates.
322 --user=""
325 The name of the kubeconfig user to use
326 --username=""
329 Username for basic authentication to the API server
330 -v, --v=0
333 number for the log level verbosity
334 --version=false
337 Print version information and quit
338 --vmodule=
341 comma-separated list of pattern=N settings for file-filtered
342 logging
343
347 # Get output from running 'date' command from pod mypod, using the first container by default
348 kubectl exec mypod -- date
349 # Get output from running 'date' command in ruby-container from pod mypod
351 kubectl exec mypod -c ruby-container -- date
352 # Switch to raw terminal mode, sends stdin to 'bash' in ruby-container from pod mypod
354 # and sends stdout/stderr from 'bash' back to the client
355 kubectl exec mypod -c ruby-container -i -t -- bash -il
356 # List contents of /usr from the first container of pod mypod and sort by modification time.
358 # If the command you want to execute in the pod has any flags in common (e.g. -i),
359 # you must use two dashes (--) to separate your command's flags/arguments.
360 # Also note, do not surround your command and its flags/arguments with quotes
361 # unless that is how you would execute it normally (i.e., do ls -t /usr, not "ls -t /usr").
362 kubectl exec mypod -i -t -- ls -t /usr
363 # Get output from running 'date' command from the first pod of the deployment mydeployment, using the first container by default
365 kubectl exec deploy/mydeployment -- date
366 # Get output from running 'date' command from the first pod of the service myservice, using the first container by default
368 kubectl exec svc/myservice -- date
369
374 kubectl(1),
375
379 January 2015, Originally compiled by Eric Paris (eparis at redhat dot
380 com) based on the kubernetes source material, but hopefully they have
381 been automatically generated since!
382Eric Paris kubernetes User Manuals KUBERNETES(1)