diff --git a/cli/command/container/opts.go b/cli/command/container/opts.go index d1faa7a88c..c41d2de246 100644 --- a/cli/command/container/opts.go +++ b/cli/command/container/opts.go @@ -93,7 +93,6 @@ type containerOptions struct { memory opts.MemBytes memoryReservation opts.MemBytes memorySwap opts.MemSwapBytes - kernelMemory opts.MemBytes user string workingDir string cpuCount int64 @@ -303,7 +302,6 @@ func addFlags(flags *pflag.FlagSet) *containerOptions { flags.SetAnnotation("io-maxbandwidth", "ostype", []string{"windows"}) flags.Uint64Var(&copts.ioMaxIOps, "io-maxiops", 0, "Maximum IOps limit for the system drive (Windows only)") flags.SetAnnotation("io-maxiops", "ostype", []string{"windows"}) - flags.Var(&copts.kernelMemory, "kernel-memory", "Kernel memory limit") flags.VarP(&copts.memory, "memory", "m", "Memory limit") flags.Var(&copts.memoryReservation, "memory-reservation", "Memory soft limit") flags.Var(&copts.memorySwap, "memory-swap", "Swap limit equal to memory plus swap: '-1' to enable unlimited swap") @@ -327,6 +325,11 @@ func addFlags(flags *pflag.FlagSet) *containerOptions { flags.Var(copts.annotations, "annotation", "Add an annotation to the container (passed through to the OCI runtime)") flags.SetAnnotation("annotation", "version", []string{"1.43"}) + // TODO(thaJeztah): remove in next release (v30.0, or v29.x) + var stub opts.MemBytes + flags.Var(&stub, "kernel-memory", "Kernel memory limit (deprecated)") + _ = flags.MarkDeprecated("kernel-memory", "and no longer supported by the kernel") + return copts } @@ -604,7 +607,6 @@ func parse(flags *pflag.FlagSet, copts *containerOptions, serverOS string) (*con MemoryReservation: copts.memoryReservation.Value(), MemorySwap: copts.memorySwap.Value(), MemorySwappiness: &copts.swappiness, - KernelMemory: copts.kernelMemory.Value(), OomKillDisable: &copts.oomKillDisable, NanoCPUs: copts.cpus.Value(), CPUCount: copts.cpuCount, diff --git a/cli/command/container/update.go b/cli/command/container/update.go index 09f13057ca..47a35702d7 100644 --- a/cli/command/container/update.go +++ b/cli/command/container/update.go @@ -26,7 +26,6 @@ type updateOptions struct { memory opts.MemBytes memoryReservation opts.MemBytes memorySwap opts.MemSwapBytes - kernelMemory opts.MemBytes restartPolicy string pidsLimit int64 cpus opts.NanoCPUs @@ -70,12 +69,6 @@ func newUpdateCommand(dockerCLI command.Cli) *cobra.Command { flags.VarP(&options.memory, "memory", "m", "Memory limit") flags.Var(&options.memoryReservation, "memory-reservation", "Memory soft limit") flags.Var(&options.memorySwap, "memory-swap", `Swap limit equal to memory plus swap: -1 to enable unlimited swap`) - flags.Var(&options.kernelMemory, "kernel-memory", "Kernel memory limit (deprecated)") - // --kernel-memory is deprecated on API v1.42 and up, but our current annotations - // do not support only showing on < API-version. This option is no longer supported - // by runc, so hiding it unconditionally. - flags.SetAnnotation("kernel-memory", "deprecated", nil) - flags.MarkHidden("kernel-memory") flags.StringVar(&options.restartPolicy, "restart", "", "Restart policy to apply when a container exits") flags.Int64Var(&options.pidsLimit, "pids-limit", 0, `Tune container pids limit (set -1 for unlimited)`) @@ -86,6 +79,11 @@ func newUpdateCommand(dockerCLI command.Cli) *cobra.Command { _ = cmd.RegisterFlagCompletionFunc("restart", completeRestartPolicies) + // TODO(thaJeztah): remove in next release (v30.0, or v29.x) + var stub opts.MemBytes + flags.Var(&stub, "kernel-memory", "Kernel memory limit (deprecated)") + _ = flags.MarkDeprecated("kernel-memory", "and no longer supported by the kernel") + return cmd } @@ -118,7 +116,6 @@ func runUpdate(ctx context.Context, dockerCli command.Cli, options *updateOption Memory: options.memory.Value(), MemoryReservation: options.memoryReservation.Value(), MemorySwap: options.memorySwap.Value(), - KernelMemory: options.kernelMemory.Value(), CPUPeriod: options.cpuPeriod, CPUQuota: options.cpuQuota, CPURealtimePeriod: options.cpuRealtimePeriod, diff --git a/cli/command/system/info_test.go b/cli/command/system/info_test.go index 1bea26c5b7..90222a6169 100644 --- a/cli/command/system/info_test.go +++ b/cli/command/system/info_test.go @@ -49,7 +49,6 @@ var sampleInfoNoSwarm = system.Info{ }, MemoryLimit: true, SwapLimit: true, - KernelMemory: true, CPUCfsPeriod: true, CPUCfsQuota: true, CPUShares: true, @@ -235,7 +234,6 @@ func TestPrettyPrintInfo(t *testing.T) { infoWithWarningsLinux := sampleInfoNoSwarm infoWithWarningsLinux.MemoryLimit = false infoWithWarningsLinux.SwapLimit = false - infoWithWarningsLinux.KernelMemory = false infoWithWarningsLinux.OomKillDisable = false infoWithWarningsLinux.CPUCfsQuota = false infoWithWarningsLinux.CPUCfsPeriod = false diff --git a/cli/command/system/testdata/docker-info-badsec.json.golden b/cli/command/system/testdata/docker-info-badsec.json.golden index 6b145f5576..4e0f89bc86 100644 --- a/cli/command/system/testdata/docker-info-badsec.json.golden +++ b/cli/command/system/testdata/docker-info-badsec.json.golden @@ -1 +1 @@ -{"ID":"EKHL:QDUU:QZ7U:MKGD:VDXK:S27Q:GIPU:24B7:R7VT:DGN6:QCSF:2UBX","Containers":0,"ContainersRunning":0,"ContainersPaused":0,"ContainersStopped":0,"Images":0,"Driver":"overlay2","DriverStatus":[["Backing Filesystem","extfs"],["Supports d_type","true"],["Using metacopy","false"],["Native Overlay 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a/docs/deprecated.md +++ b/docs/deprecated.md @@ -730,25 +730,11 @@ When using cgroups v2, the `--blkio-weight` options are implemented using Specifying kernel memory limit (`docker run --kernel-memory`) is no longer supported because the [Linux kernel deprecated `kmem.limit_in_bytes` in v5.4](https://github.com/torvalds/linux/commit/0158115f702b0ba208ab0b5adf44cae99b3ebcc7). -The OCI runtime specification now marks this option (as well as `--kernel-memory-tcp`) -as ["NOT RECOMMENDED"](https://github.com/opencontainers/runtime-spec/pull/1093), +The OCI runtime specification now marks this option as ["NOT RECOMMENDED"](https://github.com/opencontainers/runtime-spec/pull/1093), and OCI runtimes such as `runc` no longer support this option. -Docker API v1.42 and up now ignores this option when set. Older versions of the -API continue to accept the option, but depending on the OCI runtime used, may -take no effect. - -> [!NOTE] -> While not deprecated (yet) in Docker, the OCI runtime specification also -> deprecated the `memory.kmem.tcp.limit_in_bytes` option. When using `runc` as -> runtime, this option takes no effect. The Linux kernel did not explicitly -> deprecate this feature, and there is a tracking ticket in the `runc` issue -> tracker to determine if this option should be reinstated or if this was an -> oversight of the Linux kernel maintainers (see [opencontainers/runc#3174](https://github.com/opencontainers/runc/issues/3174)). -> -> The `memory.kmem.tcp.limit_in_bytes` option is only supported with cgroups v1, -> and not available on installations running with cgroups v2. This option is -> only supported by the API, and not exposed on the `docker` command-line. +The Docker API no longer handles the kernel-memory fields, and Docker CLI v29.0 +removes the `--kernel-memory` option. ### Classic Swarm and overlay networks using cluster store diff --git a/docs/reference/commandline/container_create.md b/docs/reference/commandline/container_create.md index 3b812a7774..404657cbdb 100644 --- a/docs/reference/commandline/container_create.md +++ b/docs/reference/commandline/container_create.md @@ -64,7 +64,6 @@ Create a new container | `--ip6` | `string` | | IPv6 address (e.g., 2001:db8::33) | | `--ipc` | `string` | | IPC mode to use | | `--isolation` | `string` | | Container isolation technology | -| `--kernel-memory` | `bytes` | `0` | Kernel memory limit | | `-l`, `--label` | `list` | | Set meta data on a container | | `--label-file` | `list` | | Read in a line delimited file of labels | | `--link` | `list` | | Add link to another container | diff --git a/docs/reference/commandline/container_run.md b/docs/reference/commandline/container_run.md index 7a991b1c76..cd47b0eb98 100644 --- a/docs/reference/commandline/container_run.md +++ b/docs/reference/commandline/container_run.md @@ -66,7 +66,6 @@ Create and run a new container from an image | `--ip6` | `string` | | IPv6 address (e.g., 2001:db8::33) | | [`--ipc`](#ipc) | `string` | | IPC mode to use | | [`--isolation`](#isolation) | `string` | | Container isolation technology | -| `--kernel-memory` | `bytes` | `0` | Kernel memory limit | | [`-l`](#label), [`--label`](#label) | `list` | | Set meta data on a container | | `--label-file` | `list` | | Read in a line delimited file of labels | | `--link` | `list` | | Add link to another container | diff --git a/docs/reference/commandline/create.md b/docs/reference/commandline/create.md index a306821709..c4ce24fa32 100644 --- a/docs/reference/commandline/create.md +++ b/docs/reference/commandline/create.md @@ -64,7 +64,6 @@ Create a new container | `--ip6` | `string` | | IPv6 address (e.g., 2001:db8::33) | | `--ipc` | `string` | | IPC mode to use | | `--isolation` | `string` | | Container isolation technology | -| `--kernel-memory` | `bytes` | `0` | Kernel memory limit | | `-l`, `--label` | `list` | | Set meta data on a container | | `--label-file` | `list` | | Read in a line delimited file of labels | | `--link` | `list` | | Add link to another container | diff --git a/docs/reference/commandline/run.md b/docs/reference/commandline/run.md index 0e9a90ef3e..2ef7e6fc78 100644 --- a/docs/reference/commandline/run.md +++ b/docs/reference/commandline/run.md @@ -66,7 +66,6 @@ Create and run a new container from an image | `--ip6` | `string` | | IPv6 address (e.g., 2001:db8::33) | | `--ipc` | `string` | | IPC mode to use | | `--isolation` | `string` | | Container isolation technology | -| `--kernel-memory` | `bytes` | `0` | Kernel memory limit | | `-l`, `--label` | `list` | | Set meta data on a container | | `--label-file` | `list` | | Read in a line delimited file of labels | | `--link` | `list` | | Add link to another container |