feature: add kernel info to EngineVersion metric

Signed-off-by: KevinBetterQ <1093850932@qq.com>

main.go

@@ -17,6 +17,7 @@ import (
  "github.com/alibaba/pouch/daemon/config"
  "github.com/alibaba/pouch/lxcfs"
  "github.com/alibaba/pouch/pkg/debug"
+ "github.com/alibaba/pouch/pkg/kernel"
  "github.com/alibaba/pouch/pkg/utils"
  "github.com/alibaba/pouch/storage/quota"
  "github.com/alibaba/pouch/version"
@@ -167,7 +168,15 @@ func runDaemon(cmd *cobra.Command) error {
  fmt.Printf("pouchd version: %s, build: %s, build at: %s\n", version.Version, version.GitCommit, version.BuildTime)
  return nil
  }
- metrics.EngineVersion.WithLabelValues(version.GitCommit).Set(1)
+
+ kernelVersion, err := kernel.GetKernelVersion()
+ if err != nil {
+ return fmt.Errorf("failed to get kernel version: %s", err)
+ }
+ metrics.EngineVersion.WithLabelValues(
+ fmt.Sprintf("%s BUILDTIME:%s Pouch", version.GitCommit, version.BuildTime),
+ version.Version,
+ kernelVersion.String()).Set(1)
  // initialize log.
  initLog()