112 lines
2.8 KiB
Go
112 lines
2.8 KiB
Go
package nvidia
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import (
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"fmt"
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"github.com/AliyunContainerService/gpushare-device-plugin/pkg/kubelet/client"
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"syscall"
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"os"
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"time"
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"github.com/NVIDIA/gpu-monitoring-tools/bindings/go/nvml"
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"github.com/fsnotify/fsnotify"
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log "github.com/golang/glog"
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pluginapi "k8s.io/kubernetes/pkg/kubelet/apis/deviceplugin/v1beta1"
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)
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type sharedGPUManager struct {
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enableMPS bool
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healthCheck bool
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queryKubelet bool
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kubeletClient *client.KubeletClient
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}
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func NewSharedGPUManager(enableMPS, healthCheck, queryKubelet bool, bp MemoryUnit, client *client.KubeletClient) *sharedGPUManager {
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metric = bp
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return &sharedGPUManager{
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enableMPS: enableMPS,
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healthCheck: healthCheck,
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queryKubelet: queryKubelet,
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kubeletClient: client,
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}
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}
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func (ngm *sharedGPUManager) Run() error {
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log.V(1).Infoln("Loading NVML")
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if err := nvml.Init(); err != nil {
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log.V(1).Infof("Failed to initialize NVML: %s.", err)
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log.V(1).Infof("If this is a GPU node, did you set the docker default runtime to `nvidia`?")
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select {}
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}
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defer func() { log.V(1).Infoln("Shutdown of NVML returned:", nvml.Shutdown()) }()
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log.V(1).Infoln("Fetching devices.")
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if getDeviceCount() == uint(0) {
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log.V(1).Infoln("No devices found. Waiting indefinitely.")
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select {}
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}
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log.V(1).Infoln("Starting FS watcher.")
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watcher, err := newFSWatcher(pluginapi.DevicePluginPath)
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if err != nil {
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log.V(1).Infoln("Failed to created FS watcher.")
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return err
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}
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defer watcher.Close()
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log.V(1).Infoln("Starting OS watcher.")
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sigs := newOSWatcher(syscall.SIGHUP, syscall.SIGINT, syscall.SIGTERM, syscall.SIGQUIT)
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restart := true
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var devicePlugin *NvidiaDevicePlugin
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L:
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for {
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if restart {
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if devicePlugin != nil {
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devicePlugin.Stop()
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}
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devicePlugin, err = NewNvidiaDevicePlugin(ngm.enableMPS, ngm.healthCheck, ngm.queryKubelet, ngm.kubeletClient)
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if err != nil {
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log.Warningf("Failed to get device plugin due to %v", err)
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os.Exit(1)
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} else if err = devicePlugin.Serve(); err != nil {
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log.Warningf("Failed to start device plugin due to %v", err)
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os.Exit(2)
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} else {
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restart = false
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}
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}
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select {
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case event := <-watcher.Events:
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if event.Name == pluginapi.KubeletSocket && event.Op&fsnotify.Create == fsnotify.Create {
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log.V(1).Infof("inotify: %s created, restarting.", pluginapi.KubeletSocket)
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restart = true
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}
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case err := <-watcher.Errors:
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log.Warningf("inotify: %s", err)
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case s := <-sigs:
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switch s {
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case syscall.SIGHUP:
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log.V(1).Infoln("Received SIGHUP, restarting.")
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restart = true
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case syscall.SIGQUIT:
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t := time.Now()
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timestamp := fmt.Sprint(t.Format("20060102150405"))
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log.Infoln("generate core dump")
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coredump("/etc/kubernetes/go_" + timestamp + ".txt")
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default:
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log.V(1).Infof("Received signal \"%v\", shutting down.", s)
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devicePlugin.Stop()
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break L
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}
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}
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}
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return nil
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}
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