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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,220 @@ | ||
| /* | ||
| Copyright 2023, NVIDIA CORPORATION & AFFILIATES | ||
| Licensed under the Apache License, Version 2.0 (the "License"); | ||
| you may not use this file except in compliance with the License. | ||
| You may obtain a copy of the License at | ||
| http://www.apache.org/licenses/LICENSE-2.0 | ||
| Unless required by applicable law or agreed to in writing, software | ||
| distributed under the License is distributed on an "AS IS" BASIS, | ||
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| See the License for the specific language governing permissions and | ||
| limitations under the License. | ||
| */ | ||
|
|
||
| package migrator | ||
|
|
||
| import ( | ||
| "context" | ||
| "encoding/json" | ||
| "fmt" | ||
| "net" | ||
| "os" | ||
| "reflect" | ||
| "strings" | ||
|
|
||
| corev1 "k8s.io/api/core/v1" | ||
| apiErrors "k8s.io/apimachinery/pkg/api/errors" | ||
| metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" | ||
| "k8s.io/apimachinery/pkg/types" | ||
| "sigs.k8s.io/controller-runtime/pkg/client" | ||
|
|
||
| ipamv1alpha1 "github.com/Mellanox/nvidia-k8s-ipam/api/v1alpha1" | ||
| "github.com/Mellanox/nvidia-k8s-ipam/pkg/ipam-controller/config" | ||
| "github.com/Mellanox/nvidia-k8s-ipam/pkg/pool" | ||
|
|
||
| "github.com/go-logr/logr" | ||
| ) | ||
|
|
||
| const ( | ||
| // EnvDisableMigration contains the name of the environment variable which can be used | ||
| // to disable migration | ||
| EnvDisableMigration = "MIGRATOR_DISABLE_MIGRATION" | ||
| ) | ||
|
|
||
| func Migrate(ctx context.Context, c client.Client, cmName string, cmNamespace string, poolNamespace string) error { | ||
| logger := logr.FromContextOrDiscard(ctx).WithName("migrator") | ||
| if os.Getenv(EnvDisableMigration) != "" { | ||
| logger.Info(fmt.Sprintf("%s set, skip controller migration", EnvDisableMigration)) | ||
| return nil | ||
| } | ||
|
|
||
| cfg := &corev1.ConfigMap{} | ||
| key := types.NamespacedName{ | ||
| Name: cmName, | ||
| Namespace: cmNamespace, | ||
| } | ||
| err := c.Get(ctx, key, cfg) | ||
| if err != nil { | ||
| if apiErrors.IsNotFound(err) { | ||
| logger.Info("ConfigMap not found, skipping migration") | ||
| return nil | ||
| } | ||
| logger.Error(err, "failed to read ConfigMap object") | ||
| return err | ||
| } | ||
|
|
||
| confData, exist := cfg.Data[config.ConfigMapKey] | ||
| if !exist { | ||
| logger.Error(nil, fmt.Sprintf("invalid configuration: ConfigMap %s doesn't contain %s key", | ||
| key, config.ConfigMapKey)) | ||
| return err | ||
| } | ||
| controllerConfig := &config.Config{} | ||
| if err := json.Unmarshal([]byte(confData), controllerConfig); err != nil { | ||
| logger.Error(err, fmt.Sprintf("invalid configuration: ConfigMap %s contains invalid JSON", | ||
| config.ConfigMapKey)) | ||
| return err | ||
| } | ||
| if err := controllerConfig.Validate(); err != nil { | ||
| logger.Error(err, fmt.Sprintf("invalid configuration: ConfigMap %s contains invalid config", | ||
| config.ConfigMapKey)) | ||
| return err | ||
| } | ||
|
|
||
| pools := buildIPPools(controllerConfig, poolNamespace) | ||
|
|
||
| for name, p := range pools { | ||
| err = c.Create(ctx, p) | ||
| logger.Info(fmt.Sprintf("Creating IPPool: %v", p)) | ||
| if apiErrors.IsAlreadyExists(err) { | ||
| existingPool := &ipamv1alpha1.IPPool{} | ||
| err = c.Get(ctx, client.ObjectKeyFromObject(p), existingPool) | ||
| if err != nil { | ||
| logger.Info("fail to get existing pool", "pool name", name) | ||
| return err | ||
| } | ||
| if !reflect.DeepEqual(existingPool.Spec, p.Spec) { | ||
| logger.Info("existing pool has different spec than config map setting", "pool name", name) | ||
| return fmt.Errorf("existing pool has different spec than config map setting") | ||
| } | ||
| } else if err != nil { | ||
| logger.Info("fail to create pool", "pool name", name) | ||
| return err | ||
| } | ||
| } | ||
|
|
||
| err = updateAllocations(ctx, c, logger, pools, poolNamespace) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| err = c.Delete(ctx, &corev1.ConfigMap{ObjectMeta: metav1.ObjectMeta{Namespace: cmNamespace, Name: cmName}}) | ||
| if err != nil { | ||
| logger.Info("fail to delete nv-ipam config map") | ||
| return err | ||
| } | ||
|
|
||
| return nil | ||
| } | ||
|
|
||
| func updateAllocations(ctx context.Context, c client.Client, | ||
| logger logr.Logger, pools map[string]*ipamv1alpha1.IPPool, poolNamespace string) error { | ||
| nodeList := &corev1.NodeList{} | ||
| if err := c.List(ctx, nodeList); err != nil { | ||
| logger.Error(err, "failed to list nodes") | ||
| return err | ||
| } | ||
| for i := range nodeList.Items { | ||
| node := nodeList.Items[i] | ||
| nodeLog := logger.WithValues("node", node.Name) | ||
| poolCfg, err := pool.NewConfigReader(&node) | ||
| if err != nil { | ||
| nodeLog.Info("skip loading data from the node", "reason", err.Error()) | ||
| continue | ||
| } | ||
| for poolName := range pools { | ||
| nodeIPPoolConfig := poolCfg.GetPoolByName(poolName) | ||
| if nodeIPPoolConfig == nil { | ||
| nodeLog.Info("skip loading data for pool from the node, pool not configured", "node", node.Name, "pool", poolName) | ||
| continue | ||
| } | ||
| p := &ipamv1alpha1.IPPool{} | ||
| key := types.NamespacedName{ | ||
| Name: poolName, | ||
| Namespace: poolNamespace, | ||
| } | ||
| err := c.Get(ctx, key, p) | ||
| if err != nil { | ||
| nodeLog.Info("fail getting pool", "reason", err.Error()) | ||
| return err | ||
| } | ||
| if len(p.Status.Allocations) == 0 { | ||
| p.Status.Allocations = make([]ipamv1alpha1.Allocation, 0) | ||
| } | ||
| alloc := ipamv1alpha1.Allocation{ | ||
| NodeName: node.Name, | ||
| StartIP: nodeIPPoolConfig.StartIP, | ||
| EndIP: nodeIPPoolConfig.EndIP, | ||
| } | ||
| p.Status.Allocations = append(p.Status.Allocations, alloc) | ||
| logger.Info(fmt.Sprintf("Updating IPPool status: %v", p)) | ||
| err = c.Status().Update(ctx, p) | ||
| if err != nil { | ||
| nodeLog.Info("fail to update pool allocation from node", "reason", err.Error()) | ||
| return err | ||
| } | ||
| } | ||
| fmtKey := strings.ReplaceAll(pool.IPBlocksAnnotation, "/", "~1") | ||
| patch := []byte(fmt.Sprintf("[{\"op\": \"remove\", \"path\": \"/metadata/annotations/%s\"}]", fmtKey)) | ||
| err = c.Patch(ctx, &corev1.Node{ | ||
| ObjectMeta: metav1.ObjectMeta{ | ||
| Name: node.Name, | ||
| }, | ||
| }, client.RawPatch(types.JSONPatchType, patch)) | ||
| if err != nil { | ||
| logger.Info("fail to remove IPBlocksAnnotation from node", "name", node.Name, "reason", err.Error()) | ||
| return err | ||
| } | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| func buildIPPools(controllerConfig *config.Config, poolNamespace string) map[string]*ipamv1alpha1.IPPool { | ||
| var nodeSelector *corev1.NodeSelector | ||
| if len(controllerConfig.NodeSelector) > 0 { | ||
| nodeSelector = &corev1.NodeSelector{} | ||
| selectorsItems := make([]corev1.NodeSelectorTerm, 0, len(controllerConfig.NodeSelector)) | ||
| for k, v := range controllerConfig.NodeSelector { | ||
| selector := corev1.NodeSelectorTerm{ | ||
| MatchExpressions: []corev1.NodeSelectorRequirement{ | ||
| { | ||
| Key: k, | ||
| Operator: corev1.NodeSelectorOpIn, | ||
| Values: []string{v}, | ||
| }, | ||
| }, | ||
| MatchFields: nil, | ||
| } | ||
| selectorsItems = append(selectorsItems, selector) | ||
| } | ||
| nodeSelector.NodeSelectorTerms = selectorsItems | ||
| } | ||
| pools := make(map[string]*ipamv1alpha1.IPPool) | ||
| for pName, p := range controllerConfig.Pools { | ||
| // already validated by Validate function | ||
| _, subnet, _ := net.ParseCIDR(p.Subnet) | ||
| pools[pName] = &ipamv1alpha1.IPPool{ | ||
| ObjectMeta: metav1.ObjectMeta{ | ||
| Name: pName, | ||
| Namespace: poolNamespace, | ||
| }, | ||
| Spec: ipamv1alpha1.IPPoolSpec{ | ||
| Subnet: subnet.String(), | ||
| Gateway: p.Gateway, | ||
| PerNodeBlockSize: p.PerNodeBlockSize, | ||
| NodeSelector: nodeSelector, | ||
| }, | ||
| } | ||
| } | ||
| return pools | ||
| } |