1OC EX(1) June 2016 OC EX(1)
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6 oc ex dockergc - Perform garbage collection to free space in docker
7 storage
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12 oc ex dockergc [OPTIONS]
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17 Perform garbage collection to free space in docker storage
18 If the OpenShift node is configured to use a container runtime other
21 than docker, docker will still be used to do builds. However OpenShift
22 itself may not manage the docker storage since it is not the container
23 runtime for pods.
24 This utility allows garbage collection to do be done on the docker
27 storage.
28 Only the overlay2 docker storage driver is supported at this time.
31
35 --dry-run=false
36 Run in single-pass mode with no effect.
37 --image-gc-high-threshold=80
40 The percent of disk usage after which image garbage collection is
41 always run.
42 --image-gc-low-threshold=60
45 The percent of disk usage before which image garbage collection is
46 never run. Lowest disk usage to garbage collect to.
47 --minimum-ttl-duration=0
50 Minimum age for a container or unused image before it is garbage
51 collected. Examples: '300ms', '10s' or '2h45m'.
52
56 --allow_verification_with_non_compliant_keys=false
57 Allow a SignatureVerifier to use keys which are technically
58 non-compliant with RFC6962.
59 --alsologtostderr=false
62 log to standard error as well as files
63 --application_metrics_count_limit=100
66 Max number of application metrics to store (per container)
67 --as=""
70 Username to impersonate for the operation
71 --as-group=[]
74 Group to impersonate for the operation, this flag can be repeated
75 to specify multiple groups.
76 --azure-container-registry-config=""
79 Path to the file containing Azure container registry configuration
80 information.
81 --boot_id_file="/proc/sys/kernel/random/boot_id"
84 Comma-separated list of files to check for boot-id. Use the first
85 one that exists.
86 --cache-dir="/builddir/.kube/http-cache"
89 Default HTTP cache directory
90 --certificate-authority=""
93 Path to a cert file for the certificate authority
94 --client-certificate=""
97 Path to a client certificate file for TLS
98 --client-key=""
101 Path to a client key file for TLS
102 --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
105 CIDRs opened in GCE firewall for LB traffic proxy health checks
106 --cluster=""
109 The name of the kubeconfig cluster to use
110 --container_hints="/etc/cadvisor/container_hints.json"
113 location of the container hints file
114 --containerd="unix:///var/run/containerd.sock"
117 containerd endpoint
118 --context=""
121 The name of the kubeconfig context to use
122 --default-not-ready-toleration-seconds=300
125 Indicates the tolerationSeconds of the toleration for
126 notReady:NoExecute that is added by default to every pod that does not
127 already have such a toleration.
128 --default-unreachable-toleration-seconds=300
131 Indicates the tolerationSeconds of the toleration for unreach‐
132 able:NoExecute that is added by default to every pod that does not
133 already have such a toleration.
134 --docker="unix:///var/run/docker.sock"
137 docker endpoint
138 --docker-tls=false
141 use TLS to connect to docker
142 --docker-tls-ca="ca.pem"
145 path to trusted CA
146 --docker-tls-cert="cert.pem"
149 path to client certificate
150 --docker-tls-key="key.pem"
153 path to private key
154 --docker_env_metadata_whitelist=""
157 a comma-separated list of environment variable keys that needs to
158 be collected for docker containers
159 --docker_only=false
162 Only report docker containers in addition to root stats
163 --docker_root="/var/lib/docker"
166 DEPRECATED: docker root is read from docker info (this is a fall‐
167 back, default: /var/lib/docker)
168 --enable_load_reader=false
171 Whether to enable cpu load reader
172 --event_storage_age_limit="default=24h"
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=100000"
182 Max number of events to store (per type). Value is a comma sepa‐
183 rated list of key values, where the keys are event types (e.g.: cre‐
184 ation, oom) or "default" and the value is an integer. Default is
185 applied to all non-specified event types
186 --global_housekeeping_interval=0
189 Interval between global housekeepings
190 --housekeeping_interval=0
193 Interval between container housekeepings
194 --httptest.serve=""
197 if non-empty, httptest.NewServer serves on this address and blocks
198 --insecure-skip-tls-verify=false
201 If true, the server's certificate will not be checked for validity.
202 This will make your HTTPS connections insecure
203 --kubeconfig=""
206 Path to the kubeconfig file to use for CLI requests.
207 --log-flush-frequency=0
210 Maximum number of seconds between log flushes
211 --log_backtrace_at=:0
214 when logging hits line file:N, emit a stack trace
215 --log_cadvisor_usage=false
218 Whether to log the usage of the cAdvisor container
219 --log_dir=""
222 If non-empty, write log files in this directory
223 --logtostderr=true
226 log to standard error instead of files
227 --machine_id_file="/etc/machine-id,/var/lib/dbus/machine-id"
230 Comma-separated list of files to check for machine-id. Use the
231 first one that exists.
232 --match-server-version=false
235 Require server version to match client version
236 -n, --namespace=""
239 If present, the namespace scope for this CLI request
240 --request-timeout="0"
243 The length of time to wait before giving up on a single server
244 request. Non-zero values should contain a corresponding time unit (e.g.
245 1s, 2m, 3h). A value of zero means don't timeout requests.
246 -s, --server=""
249 The address and port of the Kubernetes API server
250 --stderrthreshold=2
253 logs at or above this threshold go to stderr
254 --storage_driver_buffer_duration=0
257 Writes in the storage driver will be buffered for this duration,
258 and committed to the non memory backends as a single transaction
259 --storage_driver_db="cadvisor"
262 database name
263 --storage_driver_host="localhost:8086"
266 database host:port
267 --storage_driver_password="root"
270 database password
271 --storage_driver_secure=false
274 use secure connection with database
275 --storage_driver_table="stats"
278 table name
279 --storage_driver_user="root"
282 database username
283 --token=""
286 Bearer token for authentication to the API server
287 --user=""
290 The name of the kubeconfig user to use
291 -v, --v=0
294 log level for V logs
295 --version=false
298 Print version information and quit
299 --vmodule=
302 comma-separated list of pattern=N settings for file-filtered log‐
303 ging
304
308 # Perform garbage collection with the default settings
309 oc ex dockergc
310
315 oc-ex(1),
316
320 June 2016, Ported from the Kubernetes man-doc generator
321Openshift Openshift CLI User Manuals OC EX(1)