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https://github.com/siderolabs/talos.git
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af6622109f
This implements pushing to and pulling from Kubernetes cluster discovery registry which is simply using extra Talos annotations on the Node resources. Note: cluster discovery is still disabled by default. This means that each Talos node is going to push data from its own local `Affiliate` structure to the `Node` resource, and also watches the other `Node`s to scrape data to build `Affiliate`s from each other cluster member. Further down the pipeline, `Affiliate` is converted to a cluster `Member` which is an easy way to see the cluster membership. In its current form, `talosctl get members` is mostly equivalent to `kubectl get nodes`, but as we add more registries, it will become more powerful. Signed-off-by: Andrey Smirnov <andrey.smirnov@talos-systems.com>
108 lines
2.8 KiB
Go
108 lines
2.8 KiB
Go
// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this
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// file, You can obtain one at http://mozilla.org/MPL/2.0/.
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package cluster
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import (
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"context"
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"fmt"
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"github.com/cosi-project/runtime/pkg/controller"
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"github.com/cosi-project/runtime/pkg/resource"
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"go.uber.org/zap"
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"inet.af/netaddr"
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"github.com/talos-systems/talos/pkg/resources/cluster"
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)
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// MemberController converts Affiliates which have Nodename set into Members.
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type MemberController struct{}
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// Name implements controller.Controller interface.
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func (ctrl *MemberController) Name() string {
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return "cluster.MemberController"
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}
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// Inputs implements controller.Controller interface.
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func (ctrl *MemberController) Inputs() []controller.Input {
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return []controller.Input{
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{
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Namespace: cluster.NamespaceName,
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Type: cluster.AffiliateType,
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Kind: controller.InputWeak,
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},
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}
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}
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// Outputs implements controller.Controller interface.
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func (ctrl *MemberController) Outputs() []controller.Output {
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return []controller.Output{
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{
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Type: cluster.MemberType,
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Kind: controller.OutputExclusive,
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},
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}
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}
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// Run implements controller.Controller interface.
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//
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//nolint:gocyclo
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func (ctrl *MemberController) Run(ctx context.Context, r controller.Runtime, logger *zap.Logger) error {
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for {
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select {
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case <-ctx.Done():
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return nil
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case <-r.EventCh():
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}
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affiliates, err := r.List(ctx, resource.NewMetadata(cluster.NamespaceName, cluster.AffiliateType, "", resource.VersionUndefined))
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if err != nil {
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return fmt.Errorf("error listing affiliates")
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}
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touchedIDs := make(map[resource.ID]struct{})
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for _, affiliate := range affiliates.Items {
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affiliateSpec := affiliate.(*cluster.Affiliate).TypedSpec()
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if affiliateSpec.Nodename == "" {
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// not a cluster member
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continue
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}
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if err = r.Modify(ctx, cluster.NewMember(cluster.NamespaceName, affiliateSpec.Nodename), func(res resource.Resource) error {
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spec := res.(*cluster.Member).TypedSpec()
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spec.Addresses = append([]netaddr.IP(nil), affiliateSpec.Addresses...)
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spec.Hostname = affiliateSpec.Hostname
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spec.MachineType = affiliateSpec.MachineType
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spec.NodeID = affiliateSpec.NodeID
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return nil
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}); err != nil {
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return err
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}
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touchedIDs[affiliateSpec.Nodename] = struct{}{}
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}
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// list keys for cleanup
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list, err := r.List(ctx, resource.NewMetadata(cluster.NamespaceName, cluster.MemberType, "", resource.VersionUndefined))
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if err != nil {
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return fmt.Errorf("error listing resources: %w", err)
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}
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for _, res := range list.Items {
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if res.Metadata().Owner() != ctrl.Name() {
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continue
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}
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if _, ok := touchedIDs[res.Metadata().ID()]; !ok {
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if err = r.Destroy(ctx, res.Metadata()); err != nil {
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return fmt.Errorf("error cleaning up specs: %w", err)
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}
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}
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}
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}
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}
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