1KUBERNETES(1) Jan 2015 KUBERNETES(1)
2
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 --pod-running-timeout=1m0s
27 The length of time (like 5s, 2m, or 3h, higher than zero) to wait
28 until at least one pod is running
29 -i, --stdin=false
32 Pass stdin to the container
33 -t, --tty=false
36 Stdin is a TTY
37
41 --alsologtostderr=false
42 log to standard error as well as files
43 --application-metrics-count-limit=100
46 Max number of application metrics to store (per container)
47 --as=""
50 Username to impersonate for the operation
51 --as-group=[]
54 Group to impersonate for the operation, this flag can be repeated
55 to specify multiple groups.
56 --azure-container-registry-config=""
59 Path to the file containing Azure container registry configuration
60 information.
61 --boot-id-file="/proc/sys/kernel/random/boot_id"
64 Comma-separated list of files to check for boot-id. Use the first
65 one that exists.
66 --cache-dir="/builddir/.kube/http-cache"
69 Default HTTP cache directory
70 --certificate-authority=""
73 Path to a cert file for the certificate authority
74 --client-certificate=""
77 Path to a client certificate file for TLS
78 --client-key=""
81 Path to a client key file for TLS
82 --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
85 CIDRs opened in GCE firewall for LB traffic proxy health checks
86 --cluster=""
89 The name of the kubeconfig cluster to use
90 --container-hints="/etc/cadvisor/container_hints.json"
93 location of the container hints file
94 --containerd="/run/containerd/containerd.sock"
97 containerd endpoint
98 --containerd-namespace="k8s.io"
101 containerd namespace
102 --context=""
105 The name of the kubeconfig context to use
106 --default-not-ready-toleration-seconds=300
109 Indicates the tolerationSeconds of the toleration for
110 notReady:NoExecute that is added by default to every pod that does not
111 already have such a toleration.
112 --default-unreachable-toleration-seconds=300
115 Indicates the tolerationSeconds of the toleration for unreach‐
116 able:NoExecute that is added by default to every pod that does not
117 already have such a toleration.
118 --docker="unix:///var/run/docker.sock"
121 docker endpoint
122 --docker-env-metadata-whitelist=""
125 a comma-separated list of environment variable keys that needs to
126 be collected for docker containers
127 --docker-only=false
130 Only report docker containers in addition to root stats
131 --docker-root="/var/lib/docker"
134 DEPRECATED: docker root is read from docker info (this is a fall‐
135 back, default: /var/lib/docker)
136 --docker-tls=false
139 use TLS to connect to docker
140 --docker-tls-ca="ca.pem"
143 path to trusted CA
144 --docker-tls-cert="cert.pem"
147 path to client certificate
148 --docker-tls-key="key.pem"
151 path to private key
152 --enable-load-reader=false
155 Whether to enable cpu load reader
156 --event-storage-age-limit="default=0"
159 Max length of time for which to store events (per type). Value is a
160 comma separated list of key values, where the keys are event types
161 (e.g.: creation, oom) or "default" and the value is a duration. Default
162 is applied to all non-specified event types
163 --event-storage-event-limit="default=0"
166 Max number of events to store (per type). Value is a comma sepa‐
167 rated list of key values, where the keys are event types (e.g.: cre‐
168 ation, oom) or "default" and the value is an integer. Default is
169 applied to all non-specified event types
170 --global-housekeeping-interval=1m0s
173 Interval between global housekeepings
174 --housekeeping-interval=10s
177 Interval between container housekeepings
178 --insecure-skip-tls-verify=false
181 If true, the server's certificate will not be checked for validity.
182 This will make your HTTPS connections insecure
183 --kubeconfig=""
186 Path to the kubeconfig file to use for CLI requests.
187 --log-backtrace-at=:0
190 when logging hits line file:N, emit a stack trace
191 --log-cadvisor-usage=false
194 Whether to log the usage of the cAdvisor container
195 --log-dir=""
198 If non-empty, write log files in this directory
199 --log-file=""
202 If non-empty, use this log file
203 --log-file-max-size=1800
206 Defines the maximum size a log file can grow to. Unit is megabytes.
207 If the value is 0, the maximum file size is unlimited.
208 --log-flush-frequency=5s
211 Maximum number of seconds between log flushes
212 --logtostderr=true
215 log to standard error instead of files
216 --machine-id-file="/etc/machine-id,/var/lib/dbus/machine-id"
219 Comma-separated list of files to check for machine-id. Use the
220 first one that exists.
221 --match-server-version=false
224 Require server version to match client version
225 -n, --namespace=""
228 If present, the namespace scope for this CLI request
229 --password=""
232 Password for basic authentication to the API server
233 --profile="none"
236 Name of profile to capture. One of (none|cpu|heap|goroutine|thread‐
237 create|block|mutex)
238 --profile-output="profile.pprof"
241 Name of the file to write the profile to
242 --request-timeout="0"
245 The length of time to wait before giving up on a single server
246 request. Non-zero values should contain a corresponding time unit (e.g.
247 1s, 2m, 3h). A value of zero means don't timeout requests.
248 -s, --server=""
251 The address and port of the Kubernetes API server
252 --skip-headers=false
255 If true, avoid header prefixes in the log messages
256 --skip-log-headers=false
259 If true, avoid headers when opening log files
260 --stderrthreshold=2
263 logs at or above this threshold go to stderr
264 --storage-driver-buffer-duration=1m0s
267 Writes in the storage driver will be buffered for this duration,
268 and committed to the non memory backends as a single transaction
269 --storage-driver-db="cadvisor"
272 database name
273 --storage-driver-host="localhost:8086"
276 database host:port
277 --storage-driver-password="root"
280 database password
281 --storage-driver-secure=false
284 use secure connection with database
285 --storage-driver-table="stats"
288 table name
289 --storage-driver-user="root"
292 database username
293 --token=""
296 Bearer token for authentication to the API server
297 --update-machine-info-interval=5m0s
300 Interval between machine info updates.
301 --user=""
304 The name of the kubeconfig user to use
305 --username=""
308 Username for basic authentication to the API server
309 -v, --v=0
312 number for the log level verbosity
313 --version=false
316 Print version information and quit
317 --vmodule=
320 comma-separated list of pattern=N settings for file-filtered log‐
321 ging
322
326 # Get output from running 'date' command from pod mypod, using the first container by default
327 kubectl exec mypod date
328 # Get output from running 'date' command in ruby-container from pod mypod
330 kubectl exec mypod -c ruby-container date
331 # Switch to raw terminal mode, sends stdin to 'bash' in ruby-container from pod mypod
333 # and sends stdout/stderr from 'bash' back to the client
334 kubectl exec mypod -c ruby-container -i -t -- bash -il
335 # List contents of /usr from the first container of pod mypod and sort by modification time.
337 # If the command you want to execute in the pod has any flags in common (e.g. -i),
338 # you must use two dashes (--) to separate your command's flags/arguments.
339 # Also note, do not surround your command and its flags/arguments with quotes
340 # unless that is how you would execute it normally (i.e., do ls -t /usr, not "ls -t /usr").
341 kubectl exec mypod -i -t -- ls -t /usr
342 # Get output from running 'date' command from the first pod of the deployment mydeployment, using the first container by default
344 kubectl exec deploy/mydeployment date
345 # Get output from running 'date' command from the first pod of the service myservice, using the first container by default
347 kubectl exec svc/myservice date
348
353 kubectl(1),
354
358 January 2015, Originally compiled by Eric Paris (eparis at redhat dot
359 com) based on the kubernetes source material, but hopefully they have
360 been automatically generated since!
361Eric Paris kubernetes User Manuals KUBERNETES(1)