cli/command/container: fully deprecate --kernel-memory options

The `--kernel-memory` flag was still included to allow it to be used with
old API versions, but it's no longer supported by the kernel, and no longer
handled by OCI runtimes, so deprecating the flags.

With this patch, a deprecation warning is now produced when trying to use
the option;

    docker run --kernel-memory 123b busybox
    Flag --kernel-memory has been deprecated, this option is deprecated in the kernel and no longer supported

    docker container create --kernel-memory 123b busybox
    Flag --kernel-memory has been deprecated, and no longer supported by the kernel
    31fb57e2c6434490a2892031602be20d0206d3cf0fc281ea25654c46dcb62bac

Note that cobra does not _fail_ the command when using deprecated options;
we could make this a hard failure instead, but may not be worth the effort.

Signed-off-by: Sebastiaan van Stijn <[email protected]>

Author: thaJeztah

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,

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,

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

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 Diff","true"]],"Plugins":{"Volume":["local"],"Network":["bridge","host","macvlan","null","overlay"],"Authorization":null,"Log":["awslogs","fluentd","gcplogs","gelf","journald","json-file","splunk","syslog"]},"MemoryLimit":true,"SwapLimit":true,"KernelMemory":true,"CpuCfsPeriod":true,"CpuCfsQuota":true,"CPUShares":true,"CPUSet":true,"PidsLimit":false,"IPv4Forwarding":true,"Debug":true,"NFd":33,"OomKillDisable":true,"NGoroutines":135,"SystemTime":"2017-08-24T17:44:34.077811894Z","LoggingDriver":"json-file","CgroupDriver":"cgroupfs","NEventsListener":0,"KernelVersion":"4.4.0-87-generic","OperatingSystem":"Ubuntu 16.04.3 LTS","OSVersion":"","OSType":"linux","Architecture":"x86_64","IndexServerAddress":"https://index.docker.io/v1/","RegistryConfig":{"InsecureRegistryCIDRs":["127.0.0.0/8"],"IndexConfigs":{"docker.io":{"Name":"docker.io","Mirrors":null,"Secure":true,"Official":true}},"Mirrors":null},"NCPU":2,"MemTotal":2097356800,"GenericResources":null,"DockerRootDir":"/var/lib/docker","HttpProxy":"","HttpsProxy":"","NoProxy":"","Name":"system-sample","Labels":["provider=digitalocean"],"ExperimentalBuild":false,"ServerVersion":"17.06.1-ce","Runtimes":{"runc":{"path":"docker-runc"}},"DefaultRuntime":"runc","Swarm":{"NodeID":"","NodeAddr":"","LocalNodeState":"inactive","ControlAvailable":false,"Error":"","RemoteManagers":null},"LiveRestoreEnabled":false,"Isolation":"","InitBinary":"docker-init","ContainerdCommit":{"ID":"6e23458c129b551d5c9871e5174f6b1b7f6d1170"},"RuncCommit":{"ID":"810190ceaa507aa2727d7ae6f4790c76ec150bd2"},"InitCommit":{"ID":"949e6fa"},"SecurityOptions":["foo="],"DefaultAddressPools":[{"Base":"10.123.0.0/16","Size":24}],"FirewallBackend":{"Driver":"nftables+firewalld","Info":[["ReloadedAt","2025-07-16T16:59:14Z"]]},"CDISpecDirs":["/etc/cdi","/var/run/cdi"],"Warnings":null,"ServerErrors":["a server error occurred"],"ClientInfo":{"Debug":false,"Context":"","Plugins":[],"Warnings":null}}
+{"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 Diff","true"]],"Plugins":{"Volume":["local"],"Network":["bridge","host","macvlan","null","overlay"],"Authorization":null,"Log":["awslogs","fluentd","gcplogs","gelf","journald","json-file","splunk","syslog"]},"MemoryLimit":true,"SwapLimit":true,"CpuCfsPeriod":true,"CpuCfsQuota":true,"CPUShares":true,"CPUSet":true,"PidsLimit":false,"IPv4Forwarding":true,"Debug":true,"NFd":33,"OomKillDisable":true,"NGoroutines":135,"SystemTime":"2017-08-24T17:44:34.077811894Z","LoggingDriver":"json-file","CgroupDriver":"cgroupfs","NEventsListener":0,"KernelVersion":"4.4.0-87-generic","OperatingSystem":"Ubuntu 16.04.3 LTS","OSVersion":"","OSType":"linux","Architecture":"x86_64","IndexServerAddress":"https://index.docker.io/v1/","RegistryConfig":{"InsecureRegistryCIDRs":["127.0.0.0/8"],"IndexConfigs":{"docker.io":{"Name":"docker.io","Mirrors":null,"Secure":true,"Official":true}},"Mirrors":null},"NCPU":2,"MemTotal":2097356800,"GenericResources":null,"DockerRootDir":"/var/lib/docker","HttpProxy":"","HttpsProxy":"","NoProxy":"","Name":"system-sample","Labels":["provider=digitalocean"],"ExperimentalBuild":false,"ServerVersion":"17.06.1-ce","Runtimes":{"runc":{"path":"docker-runc"}},"DefaultRuntime":"runc","Swarm":{"NodeID":"","NodeAddr":"","LocalNodeState":"inactive","ControlAvailable":false,"Error":"","RemoteManagers":null},"LiveRestoreEnabled":false,"Isolation":"","InitBinary":"docker-init","ContainerdCommit":{"ID":"6e23458c129b551d5c9871e5174f6b1b7f6d1170"},"RuncCommit":{"ID":"810190ceaa507aa2727d7ae6f4790c76ec150bd2"},"InitCommit":{"ID":"949e6fa"},"SecurityOptions":["foo="],"DefaultAddressPools":[{"Base":"10.123.0.0/16","Size":24}],"FirewallBackend":{"Driver":"nftables+firewalld","Info":[["ReloadedAt","2025-07-16T16:59:14Z"]]},"CDISpecDirs":["/etc/cdi","/var/run/cdi"],"Warnings":null,"ServerErrors":["a server error occurred"],"ClientInfo":{"Debug":false,"Context":"","Plugins":[],"Warnings":null}}

cli/command/system/testdata/docker-info-daemon-warnings.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 Diff","true"]],"Plugins":{"Volume":["local"],"Network":["bridge","host","macvlan","null","overlay"],"Authorization":null,"Log":["awslogs","fluentd","gcplogs","gelf","journald","json-file","splunk","syslog"]},"MemoryLimit":true,"SwapLimit":true,"KernelMemory":true,"CpuCfsPeriod":true,"CpuCfsQuota":true,"CPUShares":true,"CPUSet":true,"PidsLimit":false,"IPv4Forwarding":true,"Debug":true,"NFd":33,"OomKillDisable":true,"NGoroutines":135,"SystemTime":"2017-08-24T17:44:34.077811894Z","LoggingDriver":"json-file","CgroupDriver":"cgroupfs","NEventsListener":0,"KernelVersion":"4.4.0-87-generic","OperatingSystem":"Ubuntu 16.04.3 LTS","OSVersion":"","OSType":"linux","Architecture":"x86_64","IndexServerAddress":"https://index.docker.io/v1/","RegistryConfig":{"InsecureRegistryCIDRs":["127.0.0.0/8"],"IndexConfigs":{"docker.io":{"Name":"docker.io","Mirrors":null,"Secure":true,"Official":true}},"Mirrors":null},"NCPU":2,"MemTotal":2097356800,"GenericResources":null,"DockerRootDir":"/var/lib/docker","HttpProxy":"","HttpsProxy":"","NoProxy":"","Name":"system-sample","Labels":["provider=digitalocean"],"ExperimentalBuild":false,"ServerVersion":"17.06.1-ce","Runtimes":{"runc":{"path":"docker-runc"}},"DefaultRuntime":"runc","Swarm":{"NodeID":"","NodeAddr":"","LocalNodeState":"inactive","ControlAvailable":false,"Error":"","RemoteManagers":null},"LiveRestoreEnabled":false,"Isolation":"","InitBinary":"docker-init","ContainerdCommit":{"ID":"6e23458c129b551d5c9871e5174f6b1b7f6d1170"},"RuncCommit":{"ID":"810190ceaa507aa2727d7ae6f4790c76ec150bd2"},"InitCommit":{"ID":"949e6fa"},"SecurityOptions":["name=apparmor","name=seccomp,profile=default"],"DefaultAddressPools":[{"Base":"10.123.0.0/16","Size":24}],"FirewallBackend":{"Driver":"nftables+firewalld","Info":[["ReloadedAt","2025-07-16T16:59:14Z"]]},"CDISpecDirs":["/etc/cdi","/var/run/cdi"],"Warnings":["WARNING: No memory limit support","WARNING: No swap limit support","WARNING: No oom kill disable support","WARNING: No cpu cfs quota support","WARNING: No cpu cfs period support","WARNING: No cpu shares support","WARNING: No cpuset support","WARNING: IPv4 forwarding is disabled"],"ClientInfo":{"Debug":true,"Platform":{"Name":"Docker Engine - Community"},"Version":"24.0.0","Context":"default","Plugins":[],"Warnings":null}}
+{"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 Diff","true"]],"Plugins":{"Volume":["local"],"Network":["bridge","host","macvlan","null","overlay"],"Authorization":null,"Log":["awslogs","fluentd","gcplogs","gelf","journald","json-file","splunk","syslog"]},"MemoryLimit":true,"SwapLimit":true,"CpuCfsPeriod":true,"CpuCfsQuota":true,"CPUShares":true,"CPUSet":true,"PidsLimit":false,"IPv4Forwarding":true,"Debug":true,"NFd":33,"OomKillDisable":true,"NGoroutines":135,"SystemTime":"2017-08-24T17:44:34.077811894Z","LoggingDriver":"json-file","CgroupDriver":"cgroupfs","NEventsListener":0,"KernelVersion":"4.4.0-87-generic","OperatingSystem":"Ubuntu 16.04.3 LTS","OSVersion":"","OSType":"linux","Architecture":"x86_64","IndexServerAddress":"https://index.docker.io/v1/","RegistryConfig":{"InsecureRegistryCIDRs":["127.0.0.0/8"],"IndexConfigs":{"docker.io":{"Name":"docker.io","Mirrors":null,"Secure":true,"Official":true}},"Mirrors":null},"NCPU":2,"MemTotal":2097356800,"GenericResources":null,"DockerRootDir":"/var/lib/docker","HttpProxy":"","HttpsProxy":"","NoProxy":"","Name":"system-sample","Labels":["provider=digitalocean"],"ExperimentalBuild":false,"ServerVersion":"17.06.1-ce","Runtimes":{"runc":{"path":"docker-runc"}},"DefaultRuntime":"runc","Swarm":{"NodeID":"","NodeAddr":"","LocalNodeState":"inactive","ControlAvailable":false,"Error":"","RemoteManagers":null},"LiveRestoreEnabled":false,"Isolation":"","InitBinary":"docker-init","ContainerdCommit":{"ID":"6e23458c129b551d5c9871e5174f6b1b7f6d1170"},"RuncCommit":{"ID":"810190ceaa507aa2727d7ae6f4790c76ec150bd2"},"InitCommit":{"ID":"949e6fa"},"SecurityOptions":["name=apparmor","name=seccomp,profile=default"],"DefaultAddressPools":[{"Base":"10.123.0.0/16","Size":24}],"FirewallBackend":{"Driver":"nftables+firewalld","Info":[["ReloadedAt","2025-07-16T16:59:14Z"]]},"CDISpecDirs":["/etc/cdi","/var/run/cdi"],"Warnings":["WARNING: No memory limit support","WARNING: No swap limit support","WARNING: No oom kill disable support","WARNING: No cpu cfs quota support","WARNING: No cpu cfs period support","WARNING: No cpu shares support","WARNING: No cpuset support","WARNING: IPv4 forwarding is disabled"],"ClientInfo":{"Debug":true,"Platform":{"Name":"Docker Engine - Community"},"Version":"24.0.0","Context":"default","Plugins":[],"Warnings":null}}

cli/command/system/testdata/docker-info-no-swarm.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 Diff","true"]],"Plugins":{"Volume":["local"],"Network":["bridge","host","macvlan","null","overlay"],"Authorization":null,"Log":["awslogs","fluentd","gcplogs","gelf","journald","json-file","splunk","syslog"]},"MemoryLimit":true,"SwapLimit":true,"KernelMemory":true,"CpuCfsPeriod":true,"CpuCfsQuota":true,"CPUShares":true,"CPUSet":true,"PidsLimit":false,"IPv4Forwarding":true,"Debug":true,"NFd":33,"OomKillDisable":true,"NGoroutines":135,"SystemTime":"2017-08-24T17:44:34.077811894Z","LoggingDriver":"json-file","CgroupDriver":"cgroupfs","NEventsListener":0,"KernelVersion":"4.4.0-87-generic","OperatingSystem":"Ubuntu 16.04.3 LTS","OSVersion":"","OSType":"linux","Architecture":"x86_64","IndexServerAddress":"https://index.docker.io/v1/","RegistryConfig":{"InsecureRegistryCIDRs":["127.0.0.0/8"],"IndexConfigs":{"docker.io":{"Name":"docker.io","Mirrors":null,"Secure":true,"Official":true}},"Mirrors":null},"NCPU":2,"MemTotal":2097356800,"GenericResources":null,"DockerRootDir":"/var/lib/docker","HttpProxy":"","HttpsProxy":"","NoProxy":"","Name":"system-sample","Labels":["provider=digitalocean"],"ExperimentalBuild":false,"ServerVersion":"17.06.1-ce","Runtimes":{"runc":{"path":"docker-runc"}},"DefaultRuntime":"runc","Swarm":{"NodeID":"","NodeAddr":"","LocalNodeState":"inactive","ControlAvailable":false,"Error":"","RemoteManagers":null},"LiveRestoreEnabled":false,"Isolation":"","InitBinary":"docker-init","ContainerdCommit":{"ID":"6e23458c129b551d5c9871e5174f6b1b7f6d1170"},"RuncCommit":{"ID":"810190ceaa507aa2727d7ae6f4790c76ec150bd2"},"InitCommit":{"ID":"949e6fa"},"SecurityOptions":["name=apparmor","name=seccomp,profile=default"],"DefaultAddressPools":[{"Base":"10.123.0.0/16","Size":24}],"FirewallBackend":{"Driver":"nftables+firewalld","Info":[["ReloadedAt","2025-07-16T16:59:14Z"]]},"CDISpecDirs":["/etc/cdi","/var/run/cdi"],"Warnings":null,"ClientInfo":{"Debug":true,"Platform":{"Name":"Docker Engine - Community"},"Version":"24.0.0","Context":"default","Plugins":[],"Warnings":null}}
+{"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 Diff","true"]],"Plugins":{"Volume":["local"],"Network":["bridge","host","macvlan","null","overlay"],"Authorization":null,"Log":["awslogs","fluentd","gcplogs","gelf","journald","json-file","splunk","syslog"]},"MemoryLimit":true,"SwapLimit":true,"CpuCfsPeriod":true,"CpuCfsQuota":true,"CPUShares":true,"CPUSet":true,"PidsLimit":false,"IPv4Forwarding":true,"Debug":true,"NFd":33,"OomKillDisable":true,"NGoroutines":135,"SystemTime":"2017-08-24T17:44:34.077811894Z","LoggingDriver":"json-file","CgroupDriver":"cgroupfs","NEventsListener":0,"KernelVersion":"4.4.0-87-generic","OperatingSystem":"Ubuntu 16.04.3 LTS","OSVersion":"","OSType":"linux","Architecture":"x86_64","IndexServerAddress":"https://index.docker.io/v1/","RegistryConfig":{"InsecureRegistryCIDRs":["127.0.0.0/8"],"IndexConfigs":{"docker.io":{"Name":"docker.io","Mirrors":null,"Secure":true,"Official":true}},"Mirrors":null},"NCPU":2,"MemTotal":2097356800,"GenericResources":null,"DockerRootDir":"/var/lib/docker","HttpProxy":"","HttpsProxy":"","NoProxy":"","Name":"system-sample","Labels":["provider=digitalocean"],"ExperimentalBuild":false,"ServerVersion":"17.06.1-ce","Runtimes":{"runc":{"path":"docker-runc"}},"DefaultRuntime":"runc","Swarm":{"NodeID":"","NodeAddr":"","LocalNodeState":"inactive","ControlAvailable":false,"Error":"","RemoteManagers":null},"LiveRestoreEnabled":false,"Isolation":"","InitBinary":"docker-init","ContainerdCommit":{"ID":"6e23458c129b551d5c9871e5174f6b1b7f6d1170"},"RuncCommit":{"ID":"810190ceaa507aa2727d7ae6f4790c76ec150bd2"},"InitCommit":{"ID":"949e6fa"},"SecurityOptions":["name=apparmor","name=seccomp,profile=default"],"DefaultAddressPools":[{"Base":"10.123.0.0/16","Size":24}],"FirewallBackend":{"Driver":"nftables+firewalld","Info":[["ReloadedAt","2025-07-16T16:59:14Z"]]},"CDISpecDirs":["/etc/cdi","/var/run/cdi"],"Warnings":null,"ClientInfo":{"Debug":true,"Platform":{"Name":"Docker Engine - Community"},"Version":"24.0.0","Context":"default","Plugins":[],"Warnings":null}}