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]
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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.
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22 --all-containers=false
23 Get all containers's logs in the pod(s).
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26 -c, --container=""
27 Print the logs of this container
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30 -f, --follow=false
31 Specify if the logs should be streamed.
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34 --limit-bytes=0
35 Maximum bytes of logs to return. Defaults to no limit.
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38 --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
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43 -p, --previous=false
44 If true, print the logs for the previous instance of the container
45 in a pod if it exists.
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48 -l, --selector=""
49 Selector (label query) to filter on.
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52 --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.
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57 --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.
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62 --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.
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67 --timestamps=false
68 Include timestamps on each line in the log output
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73 --allow-verification-with-non-compliant-keys=false
74 Allow a SignatureVerifier to use keys which are technically
75 non-compliant with RFC6962.
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78 --alsologtostderr=false
79 log to standard error as well as files
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82 --application-metrics-count-limit=100
83 Max number of application metrics to store (per container)
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86 --as=""
87 Username to impersonate for the operation
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90 --as-group=[]
91 Group to impersonate for the operation, this flag can be repeated
92 to specify multiple groups.
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95 --azure-container-registry-config=""
96 Path to the file containing Azure container registry configuration
97 information.
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100 --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.
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105 --cache-dir="/builddir/.kube/http-cache"
106 Default HTTP cache directory
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109 --certificate-authority=""
110 Path to a cert file for the certificate authority
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113 --client-certificate=""
114 Path to a client certificate file for TLS
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117 --client-key=""
118 Path to a client key file for TLS
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121 --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
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125 --cluster=""
126 The name of the kubeconfig cluster to use
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129 --container-hints="/etc/cadvisor/container_hints.json"
130 location of the container hints file
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133 --containerd="unix:///var/run/containerd.sock"
134 containerd endpoint
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137 --context=""
138 The name of the kubeconfig context to use
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141 --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.
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147 --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.
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153 --docker="unix:///var/run/docker.sock"
154 docker endpoint
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157 --docker-env-metadata-whitelist=""
158 a comma-separated list of environment variable keys that needs to
159 be collected for docker containers
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162 --docker-only=false
163 Only report docker containers in addition to root stats
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166 --docker-root="/var/lib/docker"
167 DEPRECATED: docker root is read from docker info (this is a fall‐
168 back, default: /var/lib/docker)
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171 --docker-tls=false
172 use TLS to connect to docker
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175 --docker-tls-ca="ca.pem"
176 path to trusted CA
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179 --docker-tls-cert="cert.pem"
180 path to client certificate
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183 --docker-tls-key="key.pem"
184 path to private key
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187 --enable-load-reader=false
188 Whether to enable cpu load reader
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191 --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
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198 --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
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205 --global-housekeeping-interval=1m0s
206 Interval between global housekeepings
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209 --google-json-key=""
210 The Google Cloud Platform Service Account JSON Key to use for
211 authentication.
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214 --housekeeping-interval=10s
215 Interval between container housekeepings
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218 --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
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223 --kubeconfig=""
224 Path to the kubeconfig file to use for CLI requests.
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227 --log-backtrace-at=:0
228 when logging hits line file:N, emit a stack trace
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231 --log-cadvisor-usage=false
232 Whether to log the usage of the cAdvisor container
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235 --log-dir=""
236 If non-empty, write log files in this directory
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239 --log-flush-frequency=5s
240 Maximum number of seconds between log flushes
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243 --logtostderr=true
244 log to standard error instead of files
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247 --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.
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252 --match-server-version=false
253 Require server version to match client version
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256 --mesos-agent="127.0.0.1:5051"
257 Mesos agent address
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260 --mesos-agent-timeout=10s
261 Mesos agent timeout
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264 -n, --namespace=""
265 If present, the namespace scope for this CLI request
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268 --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.
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274 -s, --server=""
275 The address and port of the Kubernetes API server
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278 --stderrthreshold=2
279 logs at or above this threshold go to stderr
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282 --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
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287 --storage-driver-db="cadvisor"
288 database name
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291 --storage-driver-host="localhost:8086"
292 database host:port
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295 --storage-driver-password="root"
296 database password
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299 --storage-driver-secure=false
300 use secure connection with database
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303 --storage-driver-table="stats"
304 table name
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307 --storage-driver-user="root"
308 database username
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311 --token=""
312 Bearer token for authentication to the API server
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315 --user=""
316 The name of the kubeconfig user to use
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319 -v, --v=0
320 log level for V logs
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323 --version=false
324 Print version information and quit
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327 --vmodule=
328 comma-separated list of pattern=N settings for file-filtered log‐
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334 # Return snapshot logs from pod nginx with only one container
335 kubectl logs nginx
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337 # Return snapshot logs from pod nginx with multi containers
338 kubectl logs nginx --all-containers=true
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340 # Return snapshot logs from all containers in pods defined by label app=nginx
341 kubectl logs -lapp=nginx --all-containers=true
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343 # Return snapshot of previous terminated ruby container logs from pod web-1
344 kubectl logs -p -c ruby web-1
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346 # Begin streaming the logs of the ruby container in pod web-1
347 kubectl logs -f -c ruby web-1
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349 # Display only the most recent 20 lines of output in pod nginx
350 kubectl logs --tail=20 nginx
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352 # Show all logs from pod nginx written in the last hour
353 kubectl logs --since=1h nginx
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355 # Return snapshot logs from first container of a job named hello
356 kubectl logs job/hello
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358 # Return snapshot logs from container nginx-1 of a deployment named nginx
359 kubectl logs deployment/nginx -c nginx-1
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365 kubectl(1),
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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!
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376Eric Paris kubernetes User Manuals KUBERNETES(1)