mirror of
https://github.com/siderolabs/talos.git
synced 2025-09-15 10:51:12 +02:00
d2fd7c2170
The gist is that `kubelet` service code only manages the container lifecycle, while `kubelet` configuration is managed now in the controllers and resources. New resources: * `secrets.Kubelet` contains Kubelet PKI derived directly from the machine configuration * `k8s.KubeletConfig` contains Kubelet non-secret config derived directly from the machine configuration * `k8s.NodeIPConfig` contains configuration on picking up Node IP for the kubelet (from machine configuration) * `k8s.NodeIP` contains actual Node IPs picked from the node addresses based on `NodeIPConfig` * `k8s.KubeletSpec` contains final `kubelet` container configuration, including merged arguments, KubeletConfig, etc. It is derived from `KubeletConfig`, `Nodename` and `NodeIP`. Final controller `KubeletServiceController` writes down configuration and PKI to disk, and manages restart/start of the `kubelet` service which is a pure wrapper around container lifecycle. Signed-off-by: Andrey Smirnov <andrey.smirnov@talos-systems.com>
115 lines
3.2 KiB
Go
115 lines
3.2 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 secrets
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import (
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"context"
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"fmt"
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"github.com/AlekSi/pointer"
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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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"github.com/cosi-project/runtime/pkg/state"
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"go.uber.org/zap"
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talosconfig "github.com/talos-systems/talos/pkg/machinery/config"
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"github.com/talos-systems/talos/pkg/machinery/resources/config"
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"github.com/talos-systems/talos/pkg/machinery/resources/secrets"
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)
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// KubeletController manages secrets.Kubelet based on configuration.
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type KubeletController struct{}
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// Name implements controller.Controller interface.
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func (ctrl *KubeletController) Name() string {
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return "secrets.KubeletController"
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}
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// Inputs implements controller.Controller interface.
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func (ctrl *KubeletController) Inputs() []controller.Input {
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return []controller.Input{
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{
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Namespace: config.NamespaceName,
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Type: config.MachineConfigType,
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ID: pointer.ToString(config.V1Alpha1ID),
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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 *KubeletController) Outputs() []controller.Output {
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return []controller.Output{
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{
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Type: secrets.KubeletType,
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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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func (ctrl *KubeletController) 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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cfg, err := r.Get(ctx, resource.NewMetadata(config.NamespaceName, config.MachineConfigType, config.V1Alpha1ID, resource.VersionUndefined))
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if err != nil {
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if state.IsNotFoundError(err) {
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if err = ctrl.teardown(ctx, r, secrets.KubeletType); err != nil {
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return fmt.Errorf("error destroying secrets: %w", err)
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}
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continue
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}
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return fmt.Errorf("error getting config: %w", err)
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}
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cfgProvider := cfg.(*config.MachineConfig).Config()
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if err = r.Modify(ctx, secrets.NewKubelet(secrets.KubeletID), func(r resource.Resource) error {
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return ctrl.updateKubeletSecrets(cfgProvider, r.(*secrets.Kubelet).TypedSpec())
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}); err != nil {
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return err
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}
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}
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}
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func (ctrl *KubeletController) updateKubeletSecrets(cfgProvider talosconfig.Provider, kubeletSecrets *secrets.KubeletSpec) error {
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kubeletSecrets.Endpoint = cfgProvider.Cluster().Endpoint()
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kubeletSecrets.CA = cfgProvider.Cluster().CA()
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if kubeletSecrets.CA == nil {
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return fmt.Errorf("missing cluster.CA secret")
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}
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kubeletSecrets.BootstrapTokenID = cfgProvider.Cluster().Token().ID()
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kubeletSecrets.BootstrapTokenSecret = cfgProvider.Cluster().Token().Secret()
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return nil
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}
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func (ctrl *KubeletController) teardown(ctx context.Context, r controller.Runtime, types ...resource.Type) error {
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for _, resourceType := range types {
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items, err := r.List(ctx, resource.NewMetadata(secrets.NamespaceName, resourceType, "", resource.VersionUndefined))
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if err != nil {
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return err
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}
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for _, item := range items.Items {
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if err := r.Destroy(ctx, item.Metadata()); err != nil {
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return err
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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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