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ref: https://www.kernel.org/doc/html/latest/admin-guide/cgroup-v2.html Signed-off-by: Akihiro Suda <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,9 +1,18 @@ | ||
| // +build !linux,!freebsd,!windows | ||
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| package daemon // import "github.com/docker/docker/daemon" | ||
| import "github.com/docker/docker/daemon/config" | ||
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| import ( | ||
| "github.com/docker/docker/daemon/config" | ||
| "github.com/docker/docker/pkg/sysinfo" | ||
| ) | ||
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| const platformSupported = false | ||
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| func setupResolvConf(config *config.Config) { | ||
| } | ||
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| // RawSysInfo returns *sysinfo.SysInfo . | ||
| func (daemon *Daemon) RawSysInfo(quiet bool) *sysinfo.SysInfo { | ||
| return sysinfo.New(quiet) | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,151 @@ | ||
| package sysinfo // import "github.com/docker/docker/pkg/sysinfo" | ||
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| import ( | ||
| "io/ioutil" | ||
| "path" | ||
| "strings" | ||
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| cgroupsV2 "github.com/containerd/cgroups/v2" | ||
| rsystem "github.com/opencontainers/runc/libcontainer/system" | ||
| "github.com/sirupsen/logrus" | ||
| ) | ||
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| type infoCollectorV2 func(info *SysInfo, controllers map[string]struct{}, dirPath string) (warnings []string) | ||
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| func newV2(quiet bool, opts *opts) *SysInfo { | ||
| var warnings []string | ||
| sysInfo := &SysInfo{ | ||
| CgroupUnified: true, | ||
| } | ||
| g := opts.cg2GroupPath | ||
| if g == "" { | ||
| g = "/" | ||
| } | ||
| m, err := cgroupsV2.LoadManager("/sys/fs/cgroup", g) | ||
| if err != nil { | ||
| logrus.Warn(err) | ||
| } else { | ||
| controllersM := make(map[string]struct{}) | ||
| controllers, err := m.Controllers() | ||
| if err != nil { | ||
| logrus.Warn(err) | ||
| } | ||
| for _, c := range controllers { | ||
| controllersM[c] = struct{}{} | ||
| } | ||
| opsV2 := []infoCollectorV2{ | ||
| applyMemoryCgroupInfoV2, | ||
| applyCPUCgroupInfoV2, | ||
| applyIOCgroupInfoV2, | ||
| applyCPUSetCgroupInfoV2, | ||
| applyPIDSCgroupInfoV2, | ||
| applyDevicesCgroupInfoV2, | ||
| } | ||
| dirPath := path.Join("/sys/fs/cgroup", path.Clean(g)) | ||
| for _, o := range opsV2 { | ||
| w := o(sysInfo, controllersM, dirPath) | ||
| warnings = append(warnings, w...) | ||
| } | ||
| } | ||
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| ops := []infoCollector{ | ||
| applyNetworkingInfo, | ||
| applyAppArmorInfo, | ||
| applySeccompInfo, | ||
| applyCgroupNsInfo, | ||
| } | ||
| for _, o := range ops { | ||
| w := o(sysInfo, nil) | ||
| warnings = append(warnings, w...) | ||
| } | ||
| if !quiet { | ||
| for _, w := range warnings { | ||
| logrus.Warn(w) | ||
| } | ||
| } | ||
| return sysInfo | ||
| } | ||
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| func applyMemoryCgroupInfoV2(info *SysInfo, controllers map[string]struct{}, _ string) []string { | ||
| var warnings []string | ||
| if _, ok := controllers["memory"]; !ok { | ||
| warnings = append(warnings, "Unable to find memory controller") | ||
| return warnings | ||
| } | ||
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| info.MemoryLimit = true | ||
| info.SwapLimit = true | ||
| info.MemoryReservation = true | ||
| info.OomKillDisable = false | ||
| info.MemorySwappiness = false | ||
| info.KernelMemory = false | ||
| info.KernelMemoryTCP = false | ||
| return warnings | ||
| } | ||
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| func applyCPUCgroupInfoV2(info *SysInfo, controllers map[string]struct{}, _ string) []string { | ||
| var warnings []string | ||
| if _, ok := controllers["cpu"]; !ok { | ||
| warnings = append(warnings, "Unable to find cpu controller") | ||
| return warnings | ||
| } | ||
| info.CPUShares = true | ||
| info.CPUCfsPeriod = true | ||
| info.CPUCfsQuota = true | ||
| info.CPURealtimePeriod = false | ||
| info.CPURealtimeRuntime = false | ||
| return warnings | ||
| } | ||
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| func applyIOCgroupInfoV2(info *SysInfo, controllers map[string]struct{}, _ string) []string { | ||
| var warnings []string | ||
| if _, ok := controllers["io"]; !ok { | ||
| warnings = append(warnings, "Unable to find io controller") | ||
| return warnings | ||
| } | ||
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| info.BlkioWeight = true | ||
| info.BlkioWeightDevice = true | ||
| info.BlkioReadBpsDevice = true | ||
| info.BlkioWriteBpsDevice = true | ||
| info.BlkioReadIOpsDevice = true | ||
| info.BlkioWriteIOpsDevice = true | ||
| return warnings | ||
| } | ||
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| func applyCPUSetCgroupInfoV2(info *SysInfo, controllers map[string]struct{}, dirPath string) []string { | ||
| var warnings []string | ||
| if _, ok := controllers["cpuset"]; !ok { | ||
| warnings = append(warnings, "Unable to find cpuset controller") | ||
| return warnings | ||
| } | ||
| info.Cpuset = true | ||
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| cpus, err := ioutil.ReadFile(path.Join(dirPath, "cpuset.cpus.effective")) | ||
| if err != nil { | ||
| return warnings | ||
| } | ||
| info.Cpus = strings.TrimSpace(string(cpus)) | ||
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| mems, err := ioutil.ReadFile(path.Join(dirPath, "cpuset.mems.effective")) | ||
| if err != nil { | ||
| return warnings | ||
| } | ||
| info.Mems = strings.TrimSpace(string(mems)) | ||
| return warnings | ||
| } | ||
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| func applyPIDSCgroupInfoV2(info *SysInfo, controllers map[string]struct{}, _ string) []string { | ||
| var warnings []string | ||
| if _, ok := controllers["pids"]; !ok { | ||
| warnings = append(warnings, "Unable to find pids controller") | ||
| return warnings | ||
| } | ||
| info.PidsLimit = true | ||
| return warnings | ||
| } | ||
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| func applyDevicesCgroupInfoV2(info *SysInfo, controllers map[string]struct{}, _ string) []string { | ||
| info.CgroupDevicesEnabled = !rsystem.RunningInUserNS() | ||
| return nil | ||
| } |
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