mirror of https://github.com/kubernetes/kops.git
126 lines
4.4 KiB
Go
126 lines
4.4 KiB
Go
/*
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Copyright 2022 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package scalewaymodel
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import (
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"fmt"
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"github.com/scaleway/scaleway-sdk-go/api/lb/v1"
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"github.com/scaleway/scaleway-sdk-go/scw"
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"k8s.io/klog/v2"
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"k8s.io/kops/pkg/apis/kops"
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"k8s.io/kops/pkg/dns"
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"k8s.io/kops/pkg/wellknownports"
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"k8s.io/kops/upup/pkg/fi"
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"k8s.io/kops/upup/pkg/fi/cloudup/scaleway"
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"k8s.io/kops/upup/pkg/fi/cloudup/scalewaytasks"
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)
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// APILoadBalancerModelBuilder builds a load-balancer for accessing the API
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type APILoadBalancerModelBuilder struct {
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*ScwModelContext
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Lifecycle fi.Lifecycle
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}
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var _ fi.CloudupModelBuilder = &APILoadBalancerModelBuilder{}
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func (b *APILoadBalancerModelBuilder) Build(c *fi.CloudupModelBuilderContext) error {
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// Configuration where a load balancer fronts the API
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if !b.UseLoadBalancerForAPI() {
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return nil
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}
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lbSpec := b.Cluster.Spec.API.LoadBalancer
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switch lbSpec.Type {
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case kops.LoadBalancerTypePublic:
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klog.V(8).Infof("Using public load-balancer")
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case kops.LoadBalancerTypeInternal:
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return fmt.Errorf("Scaleway clusters don't have a VPC yet, so internal load-balancers are not supported at the time")
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default:
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return fmt.Errorf("unhandled load-balancer type %q", lbSpec.Type)
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}
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zone, err := scaleway.ParseZoneFromClusterSpec(b.Cluster.Spec)
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if err != nil {
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return fmt.Errorf("building load-balancer task: %w", err)
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}
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lbTags := []string{
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fmt.Sprintf("%s=%s", scaleway.TagClusterName, b.ClusterName()),
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fmt.Sprintf("%s=%s", scaleway.TagNameRolePrefix, scaleway.TagRoleControlPlane),
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}
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for k, v := range b.CloudTags(b.ClusterName(), false) {
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lbTags = append(lbTags, fmt.Sprintf("%s=%s", k, v))
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}
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loadBalancerName := "api." + b.ClusterName()
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loadBalancer := &scalewaytasks.LoadBalancer{
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Name: fi.PtrTo(loadBalancerName),
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Zone: fi.PtrTo(string(zone)),
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Lifecycle: b.Lifecycle,
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Tags: lbTags,
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Description: "Load-balancer for kops cluster " + b.ClusterName(),
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SslCompatibilityLevel: string(lb.SSLCompatibilityLevelSslCompatibilityLevelUnknown),
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}
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c.AddTask(loadBalancer)
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lbBackendHttps, lbFrontendHttps := createLbBackendAndFrontend("https", wellknownports.KubeAPIServer, zone, loadBalancer)
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lbBackendHttps.Lifecycle = b.Lifecycle
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c.AddTask(lbBackendHttps)
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lbFrontendHttps.Lifecycle = b.Lifecycle
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c.AddTask(lbFrontendHttps)
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if dns.IsGossipClusterName(b.Cluster.Name) || b.Cluster.UsesPrivateDNS() || b.Cluster.UsesNoneDNS() {
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// Ensure the LB hostname is included in the TLS certificate,
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// if we're not going to use an alias for it
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loadBalancer.ForAPIServer = true
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lbBackendKopsController, lbFrontendKopsController := createLbBackendAndFrontend("kops-controller", wellknownports.KopsControllerPort, zone, loadBalancer)
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lbBackendKopsController.Lifecycle = b.Lifecycle
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c.AddTask(lbBackendKopsController)
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lbFrontendKopsController.Lifecycle = b.Lifecycle
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c.AddTask(lbFrontendKopsController)
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}
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return nil
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}
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func createLbBackendAndFrontend(name string, port int, zone scw.Zone, loadBalancer *scalewaytasks.LoadBalancer) (*scalewaytasks.LBBackend, *scalewaytasks.LBFrontend) {
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lbBackendKopsController := &scalewaytasks.LBBackend{
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Name: fi.PtrTo("lb-backend-" + name),
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Zone: fi.PtrTo(string(zone)),
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ForwardProtocol: fi.PtrTo(string(lb.ProtocolTCP)),
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ForwardPort: fi.PtrTo(int32(port)),
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ForwardPortAlgorithm: fi.PtrTo(string(lb.ForwardPortAlgorithmRoundrobin)),
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StickySessions: fi.PtrTo(string(lb.StickySessionsTypeNone)),
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ProxyProtocol: fi.PtrTo(string(lb.ProxyProtocolProxyProtocolUnknown)),
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LoadBalancer: loadBalancer,
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}
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lbFrontendKopsController := &scalewaytasks.LBFrontend{
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Name: fi.PtrTo("lb-frontend-" + name),
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Zone: fi.PtrTo(string(zone)),
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InboundPort: fi.PtrTo(int32(port)),
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LoadBalancer: loadBalancer,
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LBBackend: lbBackendKopsController,
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}
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return lbBackendKopsController, lbFrontendKopsController
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}
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