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This is something Docker does, and we did not do until now. Most difficult/annoying part was the REST API, where I did not really want to modify the struct being sent, so I made the new restart policy parameters query parameters instead. Testing was also a bit annoying, because testing restart policy always is. Signed-off-by: Matt Heon <mheon@redhat.com>
81 lines
1.8 KiB
Markdown
81 lines
1.8 KiB
Markdown
% podman-update 1
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## NAME
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podman\-update - Update the configuration of a given container
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## SYNOPSIS
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**podman update** [*options*] *container*
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**podman container update** [*options*] *container*
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## DESCRIPTION
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Updates the configuration of an already existing container, allowing different resource limits to be set.
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The currently supported options are a subset of the podman create/run resource limit options.
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## OPTIONS
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@@option blkio-weight
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@@option blkio-weight-device
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@@option cpu-period
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@@option cpu-quota
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@@option cpu-rt-period
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@@option cpu-rt-runtime
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@@option cpu-shares
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@@option cpus.container
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@@option cpuset-cpus
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@@option cpuset-mems
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@@option device-read-bps
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@@option device-read-iops
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@@option device-write-bps
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@@option device-write-iops
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@@option memory
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@@option memory-reservation
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@@option memory-swap
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@@option memory-swappiness
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@@option pids-limit
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@@option restart
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## EXAMPLEs
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Update a container with a new cpu quota and period.
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```
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podman update --cpus=5 myCtr
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```
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Update a container with all available options for cgroups v2.
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```
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podman update --cpus 5 --cpuset-cpus 0 --cpu-shares 123 --cpuset-mems 0 --memory 1G --memory-swap 2G --memory-reservation 2G --blkio-weight-device /dev/zero:123 --blkio-weight 123 --device-read-bps /dev/zero:10mb --device-write-bps /dev/zero:10mb --device-read-iops /dev/zero:1000 --device-write-iops /dev/zero:1000 --pids-limit 123 ctrID
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```
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Update a container with all available options for cgroups v1.
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```
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podman update --cpus 5 --cpuset-cpus 0 --cpu-shares 123 --cpuset-mems 0 --memory 1G --memory-swap 2G --memory-reservation 2G --memory-swappiness 50 --pids-limit 123 ctrID
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```
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## SEE ALSO
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**[podman(1)](podman.1.md)**, **[podman-create(1)](podman-create.1.md)**, **[podman-run(1)](podman-run.1.md)**
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## HISTORY
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August 2022, Originally written by Charlie Doern <cdoern@redhat.com>
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