OC EX - Online Linux Manual PageSection : 1
Updated : Openshift CLI User Manuals
Source : Openshift
Note : June 2016
NAMEoc ex dockergc − Perform garbage collection to free space in docker storage
SYNOPSISoc ex dockergc [OPTIONS]
DESCRIPTIONPerform garbage collection to free space in docker storage If the OpenShift node is configured to use a container runtime other than docker, docker will still be used to do builds. However OpenShift itself may not manage the docker storage since it is not the container runtime for pods. This utility allows garbage collection to do be done on the docker storage. Only the overlay2 docker storage driver is supported at this time.
OPTIONS−−dry−run=false
Run in single−pass mode with no effect. −−image−gc−high−threshold=80
The percent of disk usage after which image garbage collection is always run. −−image−gc−low−threshold=60
The percent of disk usage before which image garbage collection is never run. Lowest disk usage to garbage collect to. −−minimum−ttl−duration=0
Minimum age for a container or unused image before it is garbage collected. Examples: '300ms', '10s' or '2h45m'.
OPTIONS INHERITED FROM PARENT COMMANDS−−allow\_verification\_with\_non\_compliant\_keys\fP=false
Allow a SignatureVerifier to use keys which are technically non−compliant with RFC6962. −−alsologtostderr=false
log to standard error as well as files −−application\_metrics\_count\_limit\fP=100
Max number of application metrics to store (per container) −−as=""
Username to impersonate for the operation −−as−group=[]
Group to impersonate for the operation, this flag can be repeated to specify multiple groups. −−azure−container−registry−config=""
Path to the file containing Azure container registry configuration information. −−boot\_id\_file\fP="/proc/sys/kernel/random/boot\_id"
Comma−separated list of files to check for boot−id. Use the first one that exists. −−cache−dir="/builddir/.kube/http−cache"
Default HTTP cache directory −−certificate−authority=""
Path to a cert file for the certificate authority −−client−certificate=""
Path to a client certificate file for TLS −−client−key=""
Path to a client key file for TLS −−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
CIDRs opened in GCE firewall for LB traffic proxy health checks −−cluster=""
The name of the kubeconfig cluster to use −−container\_hints\fP="/etc/cadvisor/container\_hints.json"
location of the container hints file −−containerd="unix:///var/run/containerd.sock"
containerd endpoint −−context=""
The name of the kubeconfig context to use −−default−not−ready−toleration−seconds=300
Indicates the tolerationSeconds of the toleration for notReady:NoExecute that is added by default to every pod that does not already have such a toleration. −−default−unreachable−toleration−seconds=300
Indicates the tolerationSeconds of the toleration for unreachable:NoExecute that is added by default to every pod that does not already have such a toleration. −−docker="unix:///var/run/docker.sock"
docker endpoint −−docker−tls=false
use TLS to connect to docker −−docker−tls−ca="ca.pem"
path to trusted CA −−docker−tls−cert="cert.pem"
path to client certificate −−docker−tls−key="key.pem"
path to private key −−docker\_env\_metadata\_whitelist\fP=""
a comma−separated list of environment variable keys that needs to be collected for docker containers −−docker\_only\fP=false
Only report docker containers in addition to root stats −−docker\_root\fP="/var/lib/docker"
DEPRECATED: docker root is read from docker info (this is a fallback, default: /var/lib/docker) −−enable\_load\_reader\fP=false
Whether to enable cpu load reader −−event\_storage\_age\_limit\fP="default=24h"
Max length of time for which to store events (per type). Value is a comma separated list of key values, where the keys are event types (e.g.: creation, oom) or "default" and the value is a duration. Default is applied to all non−specified event types −−event\_storage\_event\_limit\fP="default=100000"
Max number of events to store (per type). Value is a comma separated list of key values, where the keys are event types (e.g.: creation, oom) or "default" and the value is an integer. Default is applied to all non−specified event types −−global\_housekeeping\_interval\fP=0
Interval between global housekeepings −−housekeeping\_interval\fP=0
Interval between container housekeepings −−insecure−skip−tls−verify=false
If true, the server's certificate will not be checked for validity. This will make your HTTPS connections insecure −−kubeconfig=""
Path to the kubeconfig file to use for CLI requests. −−log−flush−frequency=0
Maximum number of seconds between log flushes −−log\_backtrace\_at\fP=:0
when logging hits line file:N, emit a stack trace −−log\_cadvisor\_usage\fP=false
Whether to log the usage of the cAdvisor container −−log\_dir\fP=""
If non−empty, write log files in this directory −−logtostderr=true
log to standard error instead of files −−machine\_id\_file\fP="/etc/machine\-id,/var/lib/dbus/machine\-id"
Comma−separated list of files to check for machine−id. Use the first one that exists. −−match−server−version=false
Require server version to match client version −n, −−namespace=""
If present, the namespace scope for this CLI request −−request−timeout="0"
The length of time to wait before giving up on a single server request. Non−zero values should contain a corresponding time unit (e.g. 1s, 2m, 3h). A value of zero means don't timeout requests. −s, −−server=""
The address and port of the Kubernetes API server −−stderrthreshold=2
logs at or above this threshold go to stderr −−storage\_driver\_buffer\_duration\fP=0
Writes in the storage driver will be buffered for this duration, and committed to the non memory backends as a single transaction −−storage\_driver\_db\fP="cadvisor"
database name −−storage\_driver\_host\fP="localhost:8086"
database host:port −−storage\_driver\_password\fP="root"
database password −−storage\_driver\_secure\fP=false
use secure connection with database −−storage\_driver\_table\fP="stats"
table name −−storage\_driver\_user\fP="root"
database username −−token=""
Bearer token for authentication to the API server −−user=""
The name of the kubeconfig user to use −v, −−v=0
log level for V logs −−version=false
Print version information and quit −−vmodule=
comma−separated list of pattern=N settings for file−filtered logging
EXAMPLE # Perform garbage collection with the default settings
oc ex dockergc
SEE ALSOoc−ex(1),
HISTORYJune 2016, Ported from the Kubernetes man−doc generator 0
Johanes Gumabo
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ERROR : Need New Coding : (rof_escape_sequence|91|oc-ex-dockergc.1|48|\_verification\_with\_non\_compliant\_keys\fP=false |\fB\-\-allow\_verification\_with\_non\_compliant\_keys\fP=false
) (rof_escape_sequence|91|oc-ex-dockergc.1|56|\_metrics\_count\_limit\fP=100 |\fB\-\-application\_metrics\_count\_limit\fP=100
) (rof_escape_sequence|91|oc-ex-dockergc.1|72|\_id\_file\fP="/proc/sys/kernel/random/boot\_id" |\fB\-\-boot\_id\_file\fP="/proc/sys/kernel/random/boot\_id"
) (rof_escape_sequence|91|oc-ex-dockergc.1|100|\_hints\fP="/etc/cadvisor/container\_hints.json" |\fB\-\-container\_hints\fP="/etc/cadvisor/container\_hints.json"
) (rof_escape_sequence|91|oc-ex-dockergc.1|140|\_env\_metadata\_whitelist\fP="" |\fB\-\-docker\_env\_metadata\_whitelist\fP=""
) (rof_escape_sequence|91|oc-ex-dockergc.1|144|\_only\fP=false |\fB\-\-docker\_only\fP=false
) (rof_escape_sequence|91|oc-ex-dockergc.1|148|\_root\fP="/var/lib/docker" |\fB\-\-docker\_root\fP="/var/lib/docker"
) (rof_escape_sequence|91|oc-ex-dockergc.1|152|\_load\_reader\fP=false |\fB\-\-enable\_load\_reader\fP=false
) (rof_escape_sequence|91|oc-ex-dockergc.1|156|\_storage\_age\_limit\fP="default=24h" |\fB\-\-event\_storage\_age\_limit\fP="default=24h"
) (rof_escape_sequence|91|oc-ex-dockergc.1|160|\_storage\_event\_limit\fP="default=100000" |\fB\-\-event\_storage\_event\_limit\fP="default=100000"
) (rof_escape_sequence|91|oc-ex-dockergc.1|164|\_housekeeping\_interval\fP=0 |\fB\-\-global\_housekeeping\_interval\fP=0
) (rof_escape_sequence|91|oc-ex-dockergc.1|168|\_interval\fP=0 |\fB\-\-housekeeping\_interval\fP=0
) (rof_escape_sequence|91|oc-ex-dockergc.1|184|\_backtrace\_at\fP=:0 |\fB\-\-log\_backtrace\_at\fP=:0
) (rof_escape_sequence|91|oc-ex-dockergc.1|188|\_cadvisor\_usage\fP=false |\fB\-\-log\_cadvisor\_usage\fP=false
) (rof_escape_sequence|91|oc-ex-dockergc.1|192|\_dir\fP="" |\fB\-\-log\_dir\fP=""
) (rof_escape_sequence|91|oc-ex-dockergc.1|200|\_id\_file\fP="/etc/machine\-id,/var/lib/dbus/machine\-id" |\fB\-\-machine\_id\_file\fP="/etc/machine\-id,/var/lib/dbus/machine\-id"
) (rof_escape_sequence|91|oc-ex-dockergc.1|224|\_driver\_buffer\_duration\fP=0 |\fB\-\-storage\_driver\_buffer\_duration\fP=0
) (rof_escape_sequence|91|oc-ex-dockergc.1|228|\_driver\_db\fP="cadvisor" |\fB\-\-storage\_driver\_db\fP="cadvisor"
) (rof_escape_sequence|91|oc-ex-dockergc.1|232|\_driver\_host\fP="localhost:8086" |\fB\-\-storage\_driver\_host\fP="localhost:8086"
) (rof_escape_sequence|91|oc-ex-dockergc.1|236|\_driver\_password\fP="root" |\fB\-\-storage\_driver\_password\fP="root"
) (rof_escape_sequence|91|oc-ex-dockergc.1|240|\_driver\_secure\fP=false |\fB\-\-storage\_driver\_secure\fP=false
) (rof_escape_sequence|91|oc-ex-dockergc.1|244|\_driver\_table\fP="stats" |\fB\-\-storage\_driver\_table\fP="stats"
) (rof_escape_sequence|91|oc-ex-dockergc.1|248|\_driver\_user\fP="root" |\fB\-\-storage\_driver\_user\fP="root"
)