1OC EX(1)                           June 2016                          OC EX(1)
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NAME

6       oc  ex  dockergc  -  Perform garbage collection to free space in docker
7       storage
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SYNOPSIS

12       oc ex dockergc [OPTIONS]
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DESCRIPTION

17       Perform garbage collection to free space in docker storage
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20       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.
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26       This  utility  allows  garbage  collection  to do be done on the docker
27       storage.
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30       Only the overlay2 docker storage driver is supported at this time.
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OPTIONS

35       --dry-run=false
36           Run in single-pass mode with no effect.
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39       --image-gc-high-threshold=80
40           The percent of disk usage after which image garbage  collection  is
41       always run.
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44       --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.
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49       --minimum-ttl-duration=0
50           Minimum age for a container or unused image before  it  is  garbage
51       collected.  Examples: '300ms', '10s' or '2h45m'.
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OPTIONS INHERITED FROM PARENT COMMANDS

56       --allow_verification_with_non_compliant_keys=false
57           Allow  a  SignatureVerifier  to  use  keys  which  are  technically
58       non-compliant with RFC6962.
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61       --alsologtostderr=false
62           log to standard error as well as files
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65       --application_metrics_count_limit=100
66           Max number of application metrics to store (per container)
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69       --as=""
70           Username to impersonate for the operation
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73       --as-group=[]
74           Group to impersonate for the operation, this flag can  be  repeated
75       to specify multiple groups.
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78       --azure-container-registry-config=""
79           Path  to the file containing Azure container registry configuration
80       information.
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83       --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.
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88       --cache-dir="/builddir/.kube/http-cache"
89           Default HTTP cache directory
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92       --certificate-authority=""
93           Path to a cert file for the certificate authority
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96       --client-certificate=""
97           Path to a client certificate file for TLS
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100       --client-key=""
101           Path to a client key file for TLS
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104       --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
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108       --cluster=""
109           The name of the kubeconfig cluster to use
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112       --container_hints="/etc/cadvisor/container_hints.json"
113           location of the container hints file
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116       --containerd="unix:///var/run/containerd.sock"
117           containerd endpoint
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120       --context=""
121           The name of the kubeconfig context to use
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124       --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.
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130       --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.
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136       --docker="unix:///var/run/docker.sock"
137           docker endpoint
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140       --docker-tls=false
141           use TLS to connect to docker
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144       --docker-tls-ca="ca.pem"
145           path to trusted CA
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148       --docker-tls-cert="cert.pem"
149           path to client certificate
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152       --docker-tls-key="key.pem"
153           path to private key
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156       --docker_env_metadata_whitelist=""
157           a comma-separated list of environment variable keys that  needs  to
158       be collected for docker containers
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161       --docker_only=false
162           Only report docker containers in addition to root stats
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165       --docker_root="/var/lib/docker"
166           DEPRECATED:  docker  root is read from docker info (this is a fall‐
167       back, default: /var/lib/docker)
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170       --enable_load_reader=false
171           Whether to enable cpu load reader
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174       --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
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181       --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
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188       --global_housekeeping_interval=0
189           Interval between global housekeepings
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192       --housekeeping_interval=0
193           Interval between container housekeepings
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196       --insecure-skip-tls-verify=false
197           If true, the server's certificate will not be checked for validity.
198       This will make your HTTPS connections insecure
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201       --kubeconfig=""
202           Path to the kubeconfig file to use for CLI requests.
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205       --log-flush-frequency=0
206           Maximum number of seconds between log flushes
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209       --log_backtrace_at=:0
210           when logging hits line file:N, emit a stack trace
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213       --log_cadvisor_usage=false
214           Whether to log the usage of the cAdvisor container
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217       --log_dir=""
218           If non-empty, write log files in this directory
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221       --logtostderr=true
222           log to standard error instead of files
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225       --machine_id_file="/etc/machine-id,/var/lib/dbus/machine-id"
226           Comma-separated  list  of  files  to  check for machine-id. Use the
227       first one that exists.
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230       --match-server-version=false
231           Require server version to match client version
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234       -n, --namespace=""
235           If present, the namespace scope for this CLI request
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238       --request-timeout="0"
239           The length of time to wait before giving  up  on  a  single  server
240       request. Non-zero values should contain a corresponding time unit (e.g.
241       1s, 2m, 3h). A value of zero means don't timeout requests.
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244       -s, --server=""
245           The address and port of the Kubernetes API server
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248       --stderrthreshold=2
249           logs at or above this threshold go to stderr
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252       --storage_driver_buffer_duration=0
253           Writes in the storage driver will be buffered  for  this  duration,
254       and committed to the non memory backends as a single transaction
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257       --storage_driver_db="cadvisor"
258           database name
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261       --storage_driver_host="localhost:8086"
262           database host:port
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265       --storage_driver_password="root"
266           database password
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269       --storage_driver_secure=false
270           use secure connection with database
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273       --storage_driver_table="stats"
274           table name
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277       --storage_driver_user="root"
278           database username
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281       --token=""
282           Bearer token for authentication to the API server
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285       --user=""
286           The name of the kubeconfig user to use
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289       -v, --v=0
290           log level for V logs
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293       --version=false
294           Print version information and quit
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297       --vmodule=
298           comma-separated  list  of pattern=N settings for file-filtered log‐
299       ging
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EXAMPLE

304                # Perform garbage collection with the default settings
305                oc ex dockergc
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SEE ALSO

311       oc-ex(1),
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HISTORY

316       June 2016, Ported from the Kubernetes man-doc generator
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320Openshift                  Openshift CLI User Manuals                 OC EX(1)
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