NAME
runc-update - update running container resource constraints
SYNOPSIS
runc update [option ...] container-id
runc update -r resources.json|- container-id
DESCRIPTION
The update command change the resource constraints of a running container instance.
The resources can be set using options, or, if -r is used, parsed from JSON provided as a file or from stdin.
In case -r is used, the JSON format is like this:
{
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"memory": { |
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"limit": 0, |
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"reservation": 0, | ||||
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"swap": 0, | ||||
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"kernel": 0, | ||||
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"kernelTCP": 0 | ||||
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}, |
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"cpu": { |
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"shares": 0, | ||||
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"quota": 0, | ||||
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"period": 0, | ||||
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"realtimeRuntime": 0, | ||||
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"realtimePeriod": 0, | ||||
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"cpus": "", | ||||
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"mems": "" | ||||
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}, |
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"blockIO": { |
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"blkioWeight": 0 | ||||
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} |
}
OPTIONS
--resources|-r resources.json
Read the new resource limits from resources.json. Use - to read from stdin. If this option is used, all other options are ignored.
--blkio-weight weight
Set a new io weight.
--cpu-period num
Set CPU CFS period to be used for hardcapping (in microseconds)
--cpu-quota num
Set CPU usage limit within a given period (in microseconds).
--cpu-rt-period num
Set CPU realtime period to be used for hardcapping (in microseconds).
--cpu-rt-runtime num
Set CPU realtime hardcap limit (in usecs). Allowed cpu time in a given period.
--cpu-share num
Set CPU shares (relative weight vs. other containers).
--cpuset-cpus list
Set CPU(s) to use. The list can contain commas and ranges. For example: 0-3,7.
--cpuset-mems list
Set memory node(s) to use. The list format is the same as for --cpuset-cpus.
--memory num
Set memory limit to num bytes.
--memory-reservation num
Set memory reservation, or soft limit, to num bytes.
--memory-swap num
Set total memory + swap usage to num bytes. Use -1 to unset the limit (i.e. use unlimited swap).
--pids-limit num
Set the maximum number of processes allowed in the container.
--l3-cache-schema value
Set the value for Intel RDT/CAT L3 cache schema.
--mem-bw-schema value
Set the Intel RDT/MBA memory bandwidth schema.