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https://github.com/siderolabs/talos.git
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445f5ad542
This commit adds support for API load balancer. Quick way to enable it is during cluster creation using new `api-server-balancer-port` flag (0 by default - disabled). When enabled all API request will be routed across cluster control plane endpoints. Closes #7191 Signed-off-by: Dmitriy Matrenichev <dmitry.matrenichev@siderolabs.com>
99 lines
2.6 KiB
Go
99 lines
2.6 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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"net/netip"
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"reflect"
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"sort"
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"github.com/cosi-project/runtime/pkg/controller"
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"github.com/cosi-project/runtime/pkg/safe"
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"github.com/siderolabs/gen/channel"
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"go.uber.org/zap"
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"github.com/siderolabs/talos/pkg/machinery/config/machine"
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"github.com/siderolabs/talos/pkg/machinery/resources/cluster"
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"github.com/siderolabs/talos/pkg/machinery/resources/k8s"
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)
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// EndpointController looks up control plane endpoints.
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type EndpointController struct{}
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// Name implements controller.Controller interface.
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func (ctrl *EndpointController) Name() string {
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return "cluster.EndpointController"
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}
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// Inputs implements controller.Controller interface.
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func (ctrl *EndpointController) 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.MemberType,
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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 *EndpointController) Outputs() []controller.Output {
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return []controller.Output{
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{
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Type: k8s.EndpointType,
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Kind: controller.OutputShared,
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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 *EndpointController) Run(ctx context.Context, r controller.Runtime, logger *zap.Logger) error {
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for {
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if _, ok := channel.RecvWithContext(ctx, r.EventCh()); !ok && ctx.Err() != nil {
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return nil //nolint:nilerr
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}
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memberList, err := safe.ReaderListAll[*cluster.Member](ctx, r)
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if err != nil {
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return fmt.Errorf("error listing members: %w", err)
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}
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var endpoints []netip.Addr
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for it := safe.IteratorFromList(memberList); it.Next(); {
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member := it.Value().TypedSpec()
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if !(member.MachineType == machine.TypeControlPlane || member.MachineType == machine.TypeInit) {
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continue
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}
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endpoints = append(endpoints, member.Addresses...)
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}
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sort.Slice(endpoints, func(i, j int) bool { return endpoints[i].Compare(endpoints[j]) < 0 })
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if err := safe.WriterModify(
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ctx,
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r,
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k8s.NewEndpoint(k8s.ControlPlaneNamespaceName, k8s.ControlPlaneDiscoveredEndpointsID),
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func(r *k8s.Endpoint) error {
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if !reflect.DeepEqual(r.TypedSpec().Addresses, endpoints) {
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logger.Debug("updated controlplane endpoints", zap.Any("endpoints", endpoints))
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}
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r.TypedSpec().Addresses = endpoints
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return nil
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},
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); err != nil {
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return fmt.Errorf("error updating endpoints: %w", err)
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}
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r.ResetRestartBackoff()
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}
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}
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