diff --git a/cmd/main.go b/cmd/main.go new file mode 100644 index 00000000000..0b9aad1527d --- /dev/null +++ b/cmd/main.go @@ -0,0 +1,107 @@ +package main + +import ( + "context" + "flag" + "os" + "os/signal" + "syscall" + + corev1 "k8s.io/api/core/v1" + "github.com/spf13/cobra" + "k8s.io/client-go/kubernetes" + "k8s.io/client-go/tools/clientcmd" + "k8s.io/klog/v2" + + "github.com/ray-project/kuberay/podpool/manager" +) + +var ( + kubeconfig string + nodeName string + operatingSys string + arch string +) + +func init() { + flag.StringVar(&kubeconfig, "kubeconfig", "", "Path to a kubeconfig file") + flag.StringVar(&nodeName, "node-name", "cache-pod-node", "Name of the virtual node") + flag.StringVar(&operatingSys, "os", "linux", "Operating system of the virtual node") + flag.StringVar(&arch, "arch", "amd64", "Architecture of the virtual node") +} + +func main() { + // Create a Cobra command to handle command line arguments + cmd := &cobra.Command{ + Use: "cache-pod-manager", + Short: "Virtual Kubelet-based Cache Pod Manager", + Long: "A Virtual Kubelet implementation that manages cached pods", + Run: func(cmd *cobra.Command, args []string) { + run(cmd.Context()) + }, + } + + // Execute the command + if err := cmd.Execute(); err != nil { + klog.Fatalf("Command execution failed: %v", err) + } +} + +func run(ctx context.Context) { + // Load the Kubernetes configuration + var config *clientcmd.ClientConfig + if kubeconfig != "" { + // Use the provided kubeconfig file + configOverride := &clientcmd.ConfigOverrides{} + config = &clientcmd.ClientConfigLoadingRules{ExplicitPath: kubeconfig}.ClientConfig() + } else { + // Use in-cluster config if available, otherwise fall back to default config + config = clientcmd.NewNonInteractiveDeferredLoadingClientConfig( + clientcmd.NewDefaultClientConfigLoadingRules(), + &configOverride, + ) + } + + restConfig, err := config.ClientConfig() + if err != nil { + klog.Fatalf("Failed to create Kubernetes client config: %v", err) + } + + // Create the Kubernetes client + clientset, err := kubernetes.NewForConfig(restConfig) + if err != nil { + klog.Fatalf("Failed to create Kubernetes client: %v", err) + } + + // Create the CachePodManager + cachePodManager, err := manager.NewCachePodManager(nodeName, operatingSys, arch, clientset) + if err != nil { + klog.Fatalf("Failed to create CachePodManager: %v", err) + } + + // Set up signal handling for graceful shutdown + ctx, cancel := context.WithCancel(ctx) + sigCh := make(chan os.Signal, 1) + signal.Notify(sigCh, syscall.SIGINT, syscall.SIGTERM) + + // Start the CachePodManager + if err := cachePodManager.Start(ctx); err != nil { + klog.Fatalf("Failed to start CachePodManager: %v", err) + } + + // Set up the pod notifier + cachePodManager.NotifyPods(ctx, func(pod *corev1.Pod) { + // Handle pod notifications + klog.Infof("Received pod notification for %s/%s", pod.Namespace, pod.Name) + }) + + // Wait for shutdown signal + select { + case <-sigCh: + klog.Info("Received shutdown signal") + case <-ctx.Done(): + klog.Info("Context cancelled") + } + + cancel() +} \ No newline at end of file diff --git a/podpool/README.md b/podpool/README.md new file mode 100644 index 00000000000..c9e2d5bdd3d --- /dev/null +++ b/podpool/README.md @@ -0,0 +1,21 @@ +# KubeRay Pod Pool Virtual Kubelet + +KubeRay Pod Pool Virtual Kubelet is an optional and standalone component of the KubeRay Ecosystem. +It provides warmed-up pod pools by registering itself as a virtual kubelet to a Kubernetes cluster. +When KubeRay requests pods from the virtual kubelet, +the actual pods are taken from one of the pod pools specified by the users and effectively skip: + +* resource scheduling time +* image pulling time +* volume preparation time + because those pods are already active and waiting in pools. + + + +## controller + +pod pool controller + +## manager + +watch pod which scheduled by kubernetes, pick and sync pod status from pod pool to kubernetes \ No newline at end of file diff --git a/podpool/cmd/main.go b/podpool/cmd/main.go new file mode 100644 index 00000000000..38dd16da61a --- /dev/null +++ b/podpool/cmd/main.go @@ -0,0 +1,3 @@ +package main + +func main() {} diff --git a/podpool/controller/controller.go b/podpool/controller/controller.go new file mode 100644 index 00000000000..b0b429f8999 --- /dev/null +++ b/podpool/controller/controller.go @@ -0,0 +1 @@ +package controller diff --git a/podpool/go.mod b/podpool/go.mod new file mode 100644 index 00000000000..f60d5473706 --- /dev/null +++ b/podpool/go.mod @@ -0,0 +1,50 @@ +module github.com/ray-project/kuberay/podpool + +go 1.22.0 + +toolchain go1.24.8 + +require ( + github.com/virtual-kubelet/virtual-kubelet v1.11.0 + k8s.io/api v0.29.1 + k8s.io/apimachinery v0.29.1 + k8s.io/client-go v0.29.1 +) + +require ( + github.com/davecgh/go-spew v1.1.1 // indirect + github.com/emicklei/go-restful/v3 v3.11.0 // indirect + github.com/go-logr/logr v1.4.1 // indirect + github.com/go-openapi/jsonpointer v0.19.6 // indirect + github.com/go-openapi/jsonreference v0.20.2 // indirect + github.com/go-openapi/swag v0.22.3 // indirect + github.com/gogo/protobuf v1.3.2 // indirect + github.com/golang/protobuf v1.5.4 // indirect + github.com/google/gnostic-models v0.6.8 // indirect + github.com/google/go-cmp v0.6.0 // indirect + github.com/google/gofuzz v1.2.0 // indirect + github.com/google/uuid v1.3.1 // indirect + github.com/josharian/intern v1.0.0 // indirect + github.com/json-iterator/go v1.1.12 // indirect + github.com/mailru/easyjson v0.7.7 // indirect + github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd // indirect + github.com/modern-go/reflect2 v1.0.2 // indirect + github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect + golang.org/x/net v0.23.0 // indirect + golang.org/x/oauth2 v0.11.0 // indirect + golang.org/x/sys v0.18.0 // indirect + golang.org/x/term v0.18.0 // indirect + golang.org/x/text v0.14.0 // indirect + golang.org/x/time v0.3.0 // indirect + google.golang.org/appengine v1.6.7 // indirect + google.golang.org/protobuf v1.33.0 // indirect + gopkg.in/inf.v0 v0.9.1 // indirect + gopkg.in/yaml.v2 v2.4.0 // indirect + gopkg.in/yaml.v3 v3.0.1 // indirect + k8s.io/klog/v2 v2.130.1 // indirect + k8s.io/kube-openapi v0.0.0-20240228011516-70dd3763d340 // indirect + k8s.io/utils v0.0.0-20230726121419-3b25d923346b // indirect + sigs.k8s.io/json v0.0.0-20221116044647-bc3834ca7abd // indirect + sigs.k8s.io/structured-merge-diff/v4 v4.4.1 // indirect + sigs.k8s.io/yaml v1.3.0 // indirect +) diff --git a/podpool/go.sum b/podpool/go.sum new file mode 100644 index 00000000000..97af7e0e61d --- /dev/null +++ b/podpool/go.sum @@ -0,0 +1,152 @@ +github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E= +github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= +github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c= +github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38= +github.com/emicklei/go-restful/v3 v3.11.0 h1:rAQeMHw1c7zTmncogyy8VvRZwtkmkZ4FxERmMY4rD+g= +github.com/emicklei/go-restful/v3 v3.11.0/go.mod h1:6n3XBCmQQb25CM2LCACGz8ukIrRry+4bhvbpWn3mrbc= +github.com/go-logr/logr v1.4.1 h1:pKouT5E8xu9zeFC39JXRDukb6JFQPXM5p5I91188VAQ= +github.com/go-logr/logr v1.4.1/go.mod h1:9T104GzyrTigFIr8wt5mBrctHMim0Nb2HLGrmQ40KvY= +github.com/go-openapi/jsonpointer v0.19.6 h1:eCs3fxoIi3Wh6vtgmLTOjdhSpiqphQ+DaPn38N2ZdrE= +github.com/go-openapi/jsonpointer v0.19.6/go.mod h1:osyAmYz/mB/C3I+WsTTSgw1ONzaLJoLCyoi6/zppojs= +github.com/go-openapi/jsonreference v0.20.2 h1:3sVjiK66+uXK/6oQ8xgcRKcFgQ5KXa2KvnJRumpMGbE= +github.com/go-openapi/jsonreference v0.20.2/go.mod h1:Bl1zwGIM8/wsvqjsOQLJ/SH+En5Ap4rVB5KVcIDZG2k= +github.com/go-openapi/swag v0.22.3 h1:yMBqmnQ0gyZvEb/+KzuWZOXgllrXT4SADYbvDaXHv/g= +github.com/go-openapi/swag v0.22.3/go.mod h1:UzaqsxGiab7freDnrUUra0MwWfN/q7tE4j+VcZ0yl14= +github.com/go-task/slim-sprig 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b/podpool/manager/manager.go @@ -0,0 +1,199 @@ +package manager + +import ( + "context" + "errors" + "fmt" + + "github.com/virtual-kubelet/virtual-kubelet/trace" + corev1 "k8s.io/api/core/v1" + "k8s.io/apimachinery/pkg/api/resource" + metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" + "k8s.io/apimachinery/pkg/fields" + "k8s.io/apimachinery/pkg/runtime" + "k8s.io/apimachinery/pkg/watch" + "k8s.io/client-go/kubernetes" + "k8s.io/client-go/tools/cache" +) + +// CachePodManager implements the Virtual Kubelet PodLifecycleHandler, PodNotifier, and NodeProvider interfaces +type CachePodManager struct { + nodeName string + operatingSys string + arch string + client kubernetes.Interface + podInformer cache.SharedIndexInformer +} + +// NewCachePodManager creates a new CachePodManager +func NewCachePodManager(nodeName, operatingSys, arch string, kubeClient kubernetes.Interface) (*CachePodManager, error) { + // Set up the pod informer to watch for pod changes + podInformer := cache.NewSharedIndexInformer( + &cache.ListWatch{ + ListFunc: func(options metav1.ListOptions) (runtime.Object, error) { + options.FieldSelector = fields.OneTermEqualSelector("spec.nodeName", nodeName).String() + return kubeClient.CoreV1().Pods(metav1.NamespaceAll).List(context.TODO(), options) + }, + WatchFunc: func(options metav1.ListOptions) (watch.Interface, error) { + options.FieldSelector = fields.OneTermEqualSelector("spec.nodeName", nodeName).String() + return kubeClient.CoreV1().Pods(metav1.NamespaceAll).Watch(context.TODO(), options) + }, + }, + &corev1.Pod{}, + 0, // resync period (0 means no resync) + cache.Indexers{}, + ) + + manager := &CachePodManager{ + nodeName: nodeName, + operatingSys: operatingSys, + arch: arch, + client: kubeClient, + podInformer: podInformer, + } + + return manager, nil +} + +// CreatePod implements the PodLifecycleHandler interface +func (m *CachePodManager) CreatePod(ctx context.Context, pod *corev1.Pod) error { + ctx, span := trace.StartSpan(ctx, "CreatePod") + defer span.End() + + // TODO: Implement pod creation logic + return errors.New("CreatePod not implemented") +} + +// UpdatePod implements the PodLifecycleHandler interface +func (m *CachePodManager) UpdatePod(ctx context.Context, pod *corev1.Pod) error { + ctx, span := trace.StartSpan(ctx, "UpdatePod") + defer span.End() + + // TODO: Implement pod update logic + return errors.New("UpdatePod not implemented") +} + +// DeletePod implements the PodLifecycleHandler interface +func (m *CachePodManager) DeletePod(ctx context.Context, pod *corev1.Pod) error { + ctx, span := trace.StartSpan(ctx, "DeletePod") + defer span.End() + + // TODO: Implement pod deletion logic + return errors.New("DeletePod not implemented") +} + +// GetPod implements the PodLifecycleHandler interface +func (m *CachePodManager) GetPod(ctx context.Context, namespace, name string) (*corev1.Pod, error) { + ctx, span := trace.StartSpan(ctx, "GetPod") + defer span.End() + + // TODO: Implement pod retrieval logic + return nil, errors.New("GetPod not implemented") +} + +// GetPodStatus implements the PodLifecycleHandler interface +func (m *CachePodManager) GetPodStatus(ctx context.Context, namespace, name string) (*corev1.PodStatus, error) { + ctx, span := trace.StartSpan(ctx, "GetPodStatus") + defer span.End() + + // TODO: Implement pod status retrieval logic + return nil, errors.New("GetPodStatus not implemented") +} + +// GetPods implements the PodLifecycleHandler interface +func (m *CachePodManager) GetPods(ctx context.Context) ([]*corev1.Pod, error) { + ctx, span := trace.StartSpan(ctx, "GetPods") + defer span.End() + + // TODO: Implement pod listing logic + return nil, errors.New("GetPods not implemented") +} + +// NotifyPods implements the PodNotifier interface +func (m *CachePodManager) NotifyPods(ctx context.Context, f func(*corev1.Pod)) { + // TODO: Implement pod notify logic +} + +// Ping implements the NodeProvider interface +func (m *CachePodManager) Ping(ctx context.Context) error { + ctx, span := trace.StartSpan(ctx, "Ping") + defer span.End() + + // TODO: Implement ping logic to verify connectivity + return nil // Return nil to indicate success +} + +// NotifyNodeStatus implements the NodeProvider interface +func (m *CachePodManager) NotifyNodeStatus(ctx context.Context, cb func(*corev1.Node)) { + ctx, span := trace.StartSpan(ctx, "NotifyNodeStatus") + defer span.End() + + // Create a basic node status with resource capacity + node := &corev1.Node{ + ObjectMeta: metav1.ObjectMeta{ + Name: m.nodeName, + }, + Spec: corev1.NodeSpec{ + Taints: []corev1.Taint{ + { + Key: "node.kubernetes.io/unschedulable", + Effect: corev1.TaintEffectNoSchedule, + }, + }, + }, + Status: corev1.NodeStatus{ + NodeInfo: corev1.NodeSystemInfo{ + Architecture: m.arch, + OperatingSystem: m.operatingSys, + }, + Capacity: corev1.ResourceList{ + corev1.ResourceCPU: resource.MustParse("100"), + corev1.ResourceMemory: resource.MustParse("100Gi"), + corev1.ResourceEphemeralStorage: resource.MustParse("100Gi"), + }, + Allocatable: corev1.ResourceList{ + corev1.ResourceCPU: resource.MustParse("100"), + corev1.ResourceMemory: resource.MustParse("100Gi"), + corev1.ResourceEphemeralStorage: resource.MustParse("100Gi"), + }, + Conditions: []corev1.NodeCondition{ + { + Type: corev1.NodeReady, + Status: corev1.ConditionTrue, + }, + { + Type: corev1.NodeMemoryPressure, + Status: corev1.ConditionFalse, + }, + { + Type: corev1.NodeDiskPressure, + Status: corev1.ConditionFalse, + }, + { + Type: corev1.NodePIDPressure, + Status: corev1.ConditionFalse, + }, + { + Type: corev1.NodeNetworkUnavailable, + Status: corev1.ConditionFalse, + }, + }, + }, + } + + if cb != nil { + cb(node) + } +} + +// Start starts the pod informer +func (m *CachePodManager) Start(ctx context.Context) error { + go m.podInformer.Run(ctx.Done()) + + // Wait for the cache to sync + if !cache.WaitForCacheSync(ctx.Done(), m.podInformer.HasSynced) { + return fmt.Errorf("failed to sync pod cache") + } + + return nil +} diff --git a/podpool/test/controller_test.go b/podpool/test/controller_test.go new file mode 100644 index 00000000000..56e54040790 --- /dev/null +++ b/podpool/test/controller_test.go @@ -0,0 +1 @@ +package test diff --git a/podpool/test/manager_test.go b/podpool/test/manager_test.go new file mode 100644 index 00000000000..56e54040790 --- /dev/null +++ b/podpool/test/manager_test.go @@ -0,0 +1 @@ +package test