| // +build !windows |
| |
| package daemon // import "github.com/docker/docker/daemon" |
| |
| import ( |
| "context" |
| "fmt" |
| "os/exec" |
| "strings" |
| |
| "github.com/docker/docker/api/types" |
| "github.com/docker/docker/dockerversion" |
| "github.com/docker/docker/pkg/sysinfo" |
| "github.com/pkg/errors" |
| "github.com/sirupsen/logrus" |
| ) |
| |
| // fillPlatformInfo fills the platform related info. |
| func (daemon *Daemon) fillPlatformInfo(v *types.Info, sysInfo *sysinfo.SysInfo) { |
| v.MemoryLimit = sysInfo.MemoryLimit |
| v.SwapLimit = sysInfo.SwapLimit |
| v.KernelMemory = sysInfo.KernelMemory |
| v.OomKillDisable = sysInfo.OomKillDisable |
| v.CPUCfsPeriod = sysInfo.CPUCfsPeriod |
| v.CPUCfsQuota = sysInfo.CPUCfsQuota |
| v.CPUShares = sysInfo.CPUShares |
| v.CPUSet = sysInfo.Cpuset |
| v.Runtimes = daemon.configStore.GetAllRuntimes() |
| v.DefaultRuntime = daemon.configStore.GetDefaultRuntimeName() |
| v.InitBinary = daemon.configStore.GetInitPath() |
| |
| defaultRuntimeBinary := daemon.configStore.GetRuntime(v.DefaultRuntime).Path |
| if rv, err := exec.Command(defaultRuntimeBinary, "--version").Output(); err == nil { |
| parts := strings.Split(strings.TrimSpace(string(rv)), "\n") |
| if len(parts) == 3 { |
| parts = strings.Split(parts[1], ": ") |
| if len(parts) == 2 { |
| v.RuncCommit.ID = strings.TrimSpace(parts[1]) |
| } |
| } |
| |
| if v.RuncCommit.ID == "" { |
| logrus.Warnf("failed to retrieve %s version: unknown output format: %s", defaultRuntimeBinary, string(rv)) |
| v.RuncCommit.ID = "N/A" |
| } |
| } else { |
| logrus.Warnf("failed to retrieve %s version: %v", defaultRuntimeBinary, err) |
| v.RuncCommit.ID = "N/A" |
| } |
| |
| // runc is now shipped as a separate package. Set "expected" to same value |
| // as "ID" to prevent clients from reporting a version-mismatch |
| v.RuncCommit.Expected = v.RuncCommit.ID |
| |
| if rv, err := daemon.containerd.Version(context.Background()); err == nil { |
| v.ContainerdCommit.ID = rv.Revision |
| } else { |
| logrus.Warnf("failed to retrieve containerd version: %v", err) |
| v.ContainerdCommit.ID = "N/A" |
| } |
| |
| // containerd is now shipped as a separate package. Set "expected" to same |
| // value as "ID" to prevent clients from reporting a version-mismatch |
| v.ContainerdCommit.Expected = v.ContainerdCommit.ID |
| |
| defaultInitBinary := daemon.configStore.GetInitPath() |
| if rv, err := exec.Command(defaultInitBinary, "--version").Output(); err == nil { |
| ver, err := parseInitVersion(string(rv)) |
| |
| if err != nil { |
| logrus.Warnf("failed to retrieve %s version: %s", defaultInitBinary, err) |
| } |
| v.InitCommit = ver |
| } else { |
| logrus.Warnf("failed to retrieve %s version: %s", defaultInitBinary, err) |
| v.InitCommit.ID = "N/A" |
| } |
| |
| if !v.MemoryLimit { |
| v.Warnings = append(v.Warnings, "WARNING: No memory limit support") |
| } |
| if !v.SwapLimit { |
| v.Warnings = append(v.Warnings, "WARNING: No swap limit support") |
| } |
| if !v.KernelMemory { |
| v.Warnings = append(v.Warnings, "WARNING: No kernel memory limit support") |
| } |
| if !v.OomKillDisable { |
| v.Warnings = append(v.Warnings, "WARNING: No oom kill disable support") |
| } |
| if !v.CPUCfsQuota { |
| v.Warnings = append(v.Warnings, "WARNING: No cpu cfs quota support") |
| } |
| if !v.CPUCfsPeriod { |
| v.Warnings = append(v.Warnings, "WARNING: No cpu cfs period support") |
| } |
| if !v.CPUShares { |
| v.Warnings = append(v.Warnings, "WARNING: No cpu shares support") |
| } |
| if !v.CPUSet { |
| v.Warnings = append(v.Warnings, "WARNING: No cpuset support") |
| } |
| if !v.IPv4Forwarding { |
| v.Warnings = append(v.Warnings, "WARNING: IPv4 forwarding is disabled") |
| } |
| if !v.BridgeNfIptables { |
| v.Warnings = append(v.Warnings, "WARNING: bridge-nf-call-iptables is disabled") |
| } |
| if !v.BridgeNfIP6tables { |
| v.Warnings = append(v.Warnings, "WARNING: bridge-nf-call-ip6tables is disabled") |
| } |
| } |
| |
| func fillDriverWarnings(v *types.Info) { |
| if v.DriverStatus == nil { |
| return |
| } |
| for _, pair := range v.DriverStatus { |
| if pair[0] == "Data loop file" { |
| msg := fmt.Sprintf("WARNING: %s: usage of loopback devices is "+ |
| "strongly discouraged for production use.\n "+ |
| "Use `--storage-opt dm.thinpooldev` to specify a custom block storage device.", v.Driver) |
| |
| v.Warnings = append(v.Warnings, msg) |
| continue |
| } |
| if pair[0] == "Supports d_type" && pair[1] == "false" { |
| backingFs := getBackingFs(v) |
| |
| msg := fmt.Sprintf("WARNING: %s: the backing %s filesystem is formatted without d_type support, which leads to incorrect behavior.\n", v.Driver, backingFs) |
| if backingFs == "xfs" { |
| msg += " Reformat the filesystem with ftype=1 to enable d_type support.\n" |
| } |
| msg += " Running without d_type support will not be supported in future releases." |
| |
| v.Warnings = append(v.Warnings, msg) |
| continue |
| } |
| } |
| } |
| |
| func getBackingFs(v *types.Info) string { |
| if v.DriverStatus == nil { |
| return "" |
| } |
| for _, pair := range v.DriverStatus { |
| if pair[0] == "Backing Filesystem" { |
| return pair[1] |
| } |
| } |
| return "" |
| } |
| |
| // parseInitVersion parses a Tini version string, and extracts the version. |
| func parseInitVersion(v string) (types.Commit, error) { |
| version := types.Commit{ID: "", Expected: dockerversion.InitCommitID} |
| parts := strings.Split(strings.TrimSpace(v), " - ") |
| |
| if len(parts) >= 2 { |
| gitParts := strings.Split(parts[1], ".") |
| if len(gitParts) == 2 && gitParts[0] == "git" { |
| version.ID = gitParts[1] |
| version.Expected = dockerversion.InitCommitID[0:len(version.ID)] |
| } |
| } |
| if version.ID == "" && strings.HasPrefix(parts[0], "tini version ") { |
| version.ID = "v" + strings.TrimPrefix(parts[0], "tini version ") |
| } |
| if version.ID == "" { |
| version.ID = "N/A" |
| return version, errors.Errorf("unknown output format: %s", v) |
| } |
| return version, nil |
| } |