In docker, you can use the update command to update the container configuration. This command is used to update the configuration of one or more containers. The syntax is "docker update [OPTIONS] CONTAINER [CONTAINER...]".
The operating environment of this tutorial: linux7.3 system, docker-1.13.1 version, Dell G3 computer.
Update the configuration of one or more containers.
Syntax
docker update [OPTIONS] CONTAINER [CONTAINER...]
OPTIONS Description
Name Description
--blkio-weight blocking IO (relative weight), between 10 and 1000, 0 means disabled (default disabled)
--cpu-period Limit CPU CFS (Completely Fair Scheduler) period
--cpu-quota Limit CPU CFS (Completely Fair Scheduler) Quota
--cpu-rt-period API 1.25, limit CPU real-time time to microseconds
--cpu-rt-runtime API 1.25, limit CPU real-time runtime to microseconds
--cpu-shares, -c CPU shares (relative weight)
--cpus API 1.29, number of CPUs
--cpuset-cpus CPU allowed to execute ( 0-3, 0,1)
--cpuset-mem MEM allowed to execute (0-3, 0,1)
--kernel-memory kernel memory limit
--memory-swap swap limit equals memory plus swap, "-1" to enable unlimited swap
--memory-reservatio memory soft limit
--memory, -m memory limit
--pids-limit API 1.40, adjust the container pids limit (-1 means no limit)
--restart Restart the policy when the container exits to apply
Instance
Update the number of CPU shares
# f361b7d8465 为 容器ID docker update --cpu-shares 512 f361b7d8465
Update the restart strategy of the container
docker update --restart=always f361b7d8465
Update the container memory
docker update -m 500M f361b7d8465
Recommended study: "docker video tutorial》
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