mirror of
https://github.com/podman-container-tools/podman.git
synced 2026-08-18 22:37:52 +00:00
050f3291b9
podman update allows users to change the cgroup configuration of an existing container using the already defined resource limits flags from podman create/run. The supported flags in crun are: this command is also now supported in the libpod api via the /libpod/containers/<CID>/update endpoint where the resource limits are passed inthe request body and follow the OCI resource spec format –memory –cpus –cpuset-cpus –cpuset-mems –memory-swap –memory-reservation –cpu-shares –cpu-quota –cpu-period –blkio-weight –cpu-rt-period –cpu-rt-runtime -device-read-bps -device-write-bps -device-read-iops -device-write-iops -memory-swappiness -blkio-weight-device resolves #15067 Signed-off-by: Charlie Doern <cdoern@redhat.com>
83 lines
2.3 KiB
Go
83 lines
2.3 KiB
Go
package containers
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import (
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"context"
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"fmt"
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"github.com/containers/podman/v4/cmd/podman/common"
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"github.com/containers/podman/v4/cmd/podman/registry"
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"github.com/containers/podman/v4/pkg/domain/entities"
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"github.com/containers/podman/v4/pkg/specgen"
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"github.com/containers/podman/v4/pkg/specgenutil"
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"github.com/opencontainers/runtime-spec/specs-go"
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"github.com/spf13/cobra"
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)
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var (
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updateDescription = `Updates the cgroup configuration of a given container`
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updateCommand = &cobra.Command{
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Use: "update [options] CONTAINER",
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Short: "update an existing container",
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Long: updateDescription,
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RunE: update,
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Args: cobra.ExactArgs(1),
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ValidArgsFunction: common.AutocompleteContainers,
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Example: `podman update --cpus=5 foobar_container`,
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}
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containerUpdateCommand = &cobra.Command{
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Args: updateCommand.Args,
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Use: updateCommand.Use,
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Short: updateCommand.Short,
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Long: updateCommand.Long,
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RunE: updateCommand.RunE,
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ValidArgsFunction: updateCommand.ValidArgsFunction,
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Example: `podman container update --cpus=5 foobar_container`,
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}
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)
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var (
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updateOpts entities.ContainerCreateOptions
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)
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func updateFlags(cmd *cobra.Command) {
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common.DefineCreateDefaults(&updateOpts)
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common.DefineCreateFlags(cmd, &updateOpts, entities.UpdateMode)
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}
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func init() {
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registry.Commands = append(registry.Commands, registry.CliCommand{
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Command: updateCommand,
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})
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updateFlags(updateCommand)
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registry.Commands = append(registry.Commands, registry.CliCommand{
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Command: containerUpdateCommand,
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Parent: containerCmd,
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})
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updateFlags(containerUpdateCommand)
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}
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func update(cmd *cobra.Command, args []string) error {
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var err error
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// use a specgen since this is the easiest way to hold resource info
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s := &specgen.SpecGenerator{}
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s.ResourceLimits = &specs.LinuxResources{}
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// we need to pass the whole specgen since throttle devices are parsed later due to cross compat.
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s.ResourceLimits, err = specgenutil.GetResources(s, &updateOpts)
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if err != nil {
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return err
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}
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opts := &entities.ContainerUpdateOptions{
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NameOrID: args[0],
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Specgen: s,
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}
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rep, err := registry.ContainerEngine().ContainerUpdate(context.Background(), opts)
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if err != nil {
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return err
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}
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fmt.Println(rep)
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return nil
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}
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