1KUBERNETES(1) Jan 2015 KUBERNETES(1)
2
6 kubectl logs - Print the logs for a container in a pod
7
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 --allow-verification-with-non-compliant-keys=false
74 Allow a SignatureVerifier to use keys which are technically
75 non-compliant with RFC6962.
76 --alsologtostderr=false
79 log to standard error as well as files
80 --application-metrics-count-limit=100
83 Max number of application metrics to store (per container)
84 --as=""
87 Username to impersonate for the operation
88 --as-group=[]
91 Group to impersonate for the operation, this flag can be repeated
92 to specify multiple groups.
93 --azure-container-registry-config=""
96 Path to the file containing Azure container registry configuration
97 information.
98 --boot-id-file="/proc/sys/kernel/random/boot_id"
101 Comma-separated list of files to check for boot-id. Use the first
102 one that exists.
103 --cache-dir="/builddir/.kube/http-cache"
106 Default HTTP cache directory
107 --certificate-authority=""
110 Path to a cert file for the certificate authority
111 --client-certificate=""
114 Path to a client certificate file for TLS
115 --client-key=""
118 Path to a client key file for TLS
119 --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
122 CIDRs opened in GCE firewall for LB traffic proxy health checks
123 --cluster=""
126 The name of the kubeconfig cluster to use
127 --container-hints="/etc/cadvisor/container_hints.json"
130 location of the container hints file
131 --containerd="unix:///var/run/containerd.sock"
134 containerd endpoint
135 --context=""
138 The name of the kubeconfig context to use
139 --default-not-ready-toleration-seconds=300
142 Indicates the tolerationSeconds of the toleration for
143 notReady:NoExecute that is added by default to every pod that does not
144 already have such a toleration.
145 --default-unreachable-toleration-seconds=300
148 Indicates the tolerationSeconds of the toleration for unreach‐
149 able:NoExecute that is added by default to every pod that does not
150 already have such a toleration.
151 --docker="unix:///var/run/docker.sock"
154 docker endpoint
155 --docker-env-metadata-whitelist=""
158 a comma-separated list of environment variable keys that needs to
159 be collected for docker containers
160 --docker-only=false
163 Only report docker containers in addition to root stats
164 --docker-root="/var/lib/docker"
167 DEPRECATED: docker root is read from docker info (this is a fall‐
168 back, default: /var/lib/docker)
169 --docker-tls=false
172 use TLS to connect to docker
173 --docker-tls-ca="ca.pem"
176 path to trusted CA
177 --docker-tls-cert="cert.pem"
180 path to client certificate
181 --docker-tls-key="key.pem"
184 path to private key
185 --enable-load-reader=false
188 Whether to enable cpu load reader
189 --event-storage-age-limit="default=0"
192 Max length of time for which to store events (per type). Value is a
193 comma separated list of key values, where the keys are event types
194 (e.g.: creation, oom) or "default" and the value is a duration. Default
195 is applied to all non-specified event types
196 --event-storage-event-limit="default=0"
199 Max number of events to store (per type). Value is a comma sepa‐
200 rated list of key values, where the keys are event types (e.g.: cre‐
201 ation, oom) or "default" and the value is an integer. Default is
202 applied to all non-specified event types
203 --global-housekeeping-interval=1m0s
206 Interval between global housekeepings
207 --google-json-key=""
210 The Google Cloud Platform Service Account JSON Key to use for
211 authentication.
212 --housekeeping-interval=10s
215 Interval between container housekeepings
216 --insecure-skip-tls-verify=false
219 If true, the server's certificate will not be checked for validity.
220 This will make your HTTPS connections insecure
221 --kubeconfig=""
224 Path to the kubeconfig file to use for CLI requests.
225 --log-backtrace-at=:0
228 when logging hits line file:N, emit a stack trace
229 --log-cadvisor-usage=false
232 Whether to log the usage of the cAdvisor container
233 --log-dir=""
236 If non-empty, write log files in this directory
237 --log-flush-frequency=5s
240 Maximum number of seconds between log flushes
241 --logtostderr=true
244 log to standard error instead of files
245 --machine-id-file="/etc/machine-id,/var/lib/dbus/machine-id"
248 Comma-separated list of files to check for machine-id. Use the
249 first one that exists.
250 --match-server-version=false
253 Require server version to match client version
254 --mesos-agent="127.0.0.1:5051"
257 Mesos agent address
258 --mesos-agent-timeout=10s
261 Mesos agent timeout
262 -n, --namespace=""
265 If present, the namespace scope for this CLI request
266 --request-timeout="0"
269 The length of time to wait before giving up on a single server
270 request. Non-zero values should contain a corresponding time unit (e.g.
271 1s, 2m, 3h). A value of zero means don't timeout requests.
272 -s, --server=""
275 The address and port of the Kubernetes API server
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 --token=""
312 Bearer token for authentication to the API server
313 --user=""
316 The name of the kubeconfig user to use
317 -v, --v=0
320 log level for V logs
321 --version=false
324 Print version information and quit
325 --vmodule=
328 comma-separated list of pattern=N settings for file-filtered log‐
329 ging
330
334 # Return snapshot logs from pod nginx with only one container
335 kubectl logs nginx
336 # Return snapshot logs from pod nginx with multi containers
338 kubectl logs nginx --all-containers=true
339 # Return snapshot logs from all containers in pods defined by label app=nginx
341 kubectl logs -lapp=nginx --all-containers=true
342 # Return snapshot of previous terminated ruby container logs from pod web-1
344 kubectl logs -p -c ruby web-1
345 # Begin streaming the logs of the ruby container in pod web-1
347 kubectl logs -f -c ruby web-1
348 # Display only the most recent 20 lines of output in pod nginx
350 kubectl logs --tail=20 nginx
351 # Show all logs from pod nginx written in the last hour
353 kubectl logs --since=1h nginx
354 # Return snapshot logs from first container of a job named hello
356 kubectl logs job/hello
357 # Return snapshot logs from container nginx-1 of a deployment named nginx
359 kubectl logs deployment/nginx -c nginx-1
360
365 kubectl(1),
366
370 January 2015, Originally compiled by Eric Paris (eparis at redhat dot
371 com) based on the kubernetes source material, but hopefully they have
372 been automatically generated since!
373Eric Paris kubernetes User Manuals KUBERNETES(1)