1KUBERNETES(1) Jan 2015 KUBERNETES(1)
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6 kubectl logs - Print the logs for a container in a pod
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11 kubectl logs [OPTIONS]
12
16 Print the logs for a container in a pod or specified resource. If the
17 pod has only one container, the container name is optional.
18
22 --all-containers=false
23 Get all containers's logs in the pod(s).
24 -c, --container=""
27 Print the logs of this container
28 -f, --follow=false
31 Specify if the logs should be streamed.
32 --limit-bytes=0
35 Maximum bytes of logs to return. Defaults to no limit.
36 --pod-running-timeout=20s
39 The length of time (like 5s, 2m, or 3h, higher than zero) to wait
40 until at least one pod is running
41 -p, --previous=false
44 If true, print the logs for the previous instance of the container
45 in a pod if it exists.
46 -l, --selector=""
49 Selector (label query) to filter on.
50 --since=0s
53 Only return logs newer than a relative duration like 5s, 2m, or 3h.
54 Defaults to all logs. Only one of since-time / since may be used.
55 --since-time=""
58 Only return logs after a specific date (RFC3339). Defaults to all
59 logs. Only one of since-time / since may be used.
60 --tail=-1
63 Lines of recent log file to display. Defaults to -1 with no selec‐
64 tor, showing all log lines otherwise 10, if a selector is provided.
65 --timestamps=false
68 Include timestamps on each line in the log output
69
73 --alsologtostderr=false
74 log to standard error as well as files
75 --application-metrics-count-limit=100
78 Max number of application metrics to store (per container)
79 --as=""
82 Username to impersonate for the operation
83 --as-group=[]
86 Group to impersonate for the operation, this flag can be repeated
87 to specify multiple groups.
88 --azure-container-registry-config=""
91 Path to the file containing Azure container registry configuration
92 information.
93 --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.
98 --cache-dir="/builddir/.kube/http-cache"
101 Default HTTP cache directory
102 --certificate-authority=""
105 Path to a cert file for the certificate authority
106 --client-certificate=""
109 Path to a client certificate file for TLS
110 --client-key=""
113 Path to a client key file for TLS
114 --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
118 --cluster=""
121 The name of the kubeconfig cluster to use
122 --container-hints="/etc/cadvisor/container_hints.json"
125 location of the container hints file
126 --containerd="unix:///var/run/containerd.sock"
129 containerd endpoint
130 --context=""
133 The name of the kubeconfig context to use
134 --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.
140 --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.
146 --docker="unix:///var/run/docker.sock"
149 docker endpoint
150 --docker-env-metadata-whitelist=""
153 a comma-separated list of environment variable keys that needs to
154 be collected for docker containers
155 --docker-only=false
158 Only report docker containers in addition to root stats
159 --docker-root="/var/lib/docker"
162 DEPRECATED: docker root is read from docker info (this is a fall‐
163 back, default: /var/lib/docker)
164 --docker-tls=false
167 use TLS to connect to docker
168 --docker-tls-ca="ca.pem"
171 path to trusted CA
172 --docker-tls-cert="cert.pem"
175 path to client certificate
176 --docker-tls-key="key.pem"
179 path to private key
180 --enable-load-reader=false
183 Whether to enable cpu load reader
184 --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
191 --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
198 --global-housekeeping-interval=1m0s
201 Interval between global housekeepings
202 --housekeeping-interval=10s
205 Interval between container housekeepings
206 --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
211 --kubeconfig=""
214 Path to the kubeconfig file to use for CLI requests.
215 --log-backtrace-at=:0
218 when logging hits line file:N, emit a stack trace
219 --log-cadvisor-usage=false
222 Whether to log the usage of the cAdvisor container
223 --log-dir=""
226 If non-empty, write log files in this directory
227 --log-file=""
230 If non-empty, use this log file
231 --log-flush-frequency=5s
234 Maximum number of seconds between log flushes
235 --logtostderr=true
238 log to standard error instead of files
239 --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.
244 --match-server-version=false
247 Require server version to match client version
248 --mesos-agent="127.0.0.1:5051"
251 Mesos agent address
252 --mesos-agent-timeout=10s
255 Mesos agent timeout
256 -n, --namespace=""
259 If present, the namespace scope for this CLI request
260 --password=""
263 Password for basic authentication to the API server
264 --profile="none"
267 Name of profile to capture. One of (none|cpu|heap|goroutine|thread‐
268 create|block|mutex)
269 --profile-output="profile.pprof"
272 Name of the file to write the profile to
273 --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.
279 -s, --server=""
282 The address and port of the Kubernetes API server
283 --skip-headers=false
286 If true, avoid header prefixes in the log messages
287 --stderrthreshold=2
290 logs at or above this threshold go to stderr
291 --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
296 --storage-driver-db="cadvisor"
299 database name
300 --storage-driver-host="localhost:8086"
303 database host:port
304 --storage-driver-password="root"
307 database password
308 --storage-driver-secure=false
311 use secure connection with database
312 --storage-driver-table="stats"
315 table name
316 --storage-driver-user="root"
319 database username
320 --token=""
323 Bearer token for authentication to the API server
324 --user=""
327 The name of the kubeconfig user to use
328 --username=""
331 Username for basic authentication to the API server
332 -v, --v=0
335 log level for V logs
336 --version=false
339 Print version information and quit
340 --vmodule=
343 comma-separated list of pattern=N settings for file-filtered log‐
344 ging
345
349 # Return snapshot logs from pod nginx with only one container
350 kubectl logs nginx
351 # Return snapshot logs from pod nginx with multi containers
353 kubectl logs nginx --all-containers=true
354 # Return snapshot logs from all containers in pods defined by label app=nginx
356 kubectl logs -lapp=nginx --all-containers=true
357 # Return snapshot of previous terminated ruby container logs from pod web-1
359 kubectl logs -p -c ruby web-1
360 # Begin streaming the logs of the ruby container in pod web-1
362 kubectl logs -f -c ruby web-1
363 # Display only the most recent 20 lines of output in pod nginx
365 kubectl logs --tail=20 nginx
366 # Show all logs from pod nginx written in the last hour
368 kubectl logs --since=1h nginx
369 # Return snapshot logs from first container of a job named hello
371 kubectl logs job/hello
372 # Return snapshot logs from container nginx-1 of a deployment named nginx
374 kubectl logs deployment/nginx -c nginx-1
375
380 kubectl(1),
381
385 January 2015, Originally compiled by Eric Paris (eparis at redhat dot
386 com) based on the kubernetes source material, but hopefully they have
387 been automatically generated since!
388Eric Paris kubernetes User Manuals KUBERNETES(1)