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Merge pull request #3209 from mikhail-sakhnov/windows-calico-host-con…
…tainers Windows calico host containers
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,211 @@ | ||
| /* | ||
| Copyright 2023 k0s authors | ||
| 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 controller | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "context" | ||
| "fmt" | ||
| "path/filepath" | ||
| "reflect" | ||
| "strings" | ||
| "time" | ||
|
|
||
| "github.com/k0sproject/k0s/internal/pkg/templatewriter" | ||
| "github.com/k0sproject/k0s/static" | ||
| "github.com/sirupsen/logrus" | ||
| metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" | ||
|
|
||
| "github.com/k0sproject/k0s/pkg/apis/k0s/v1beta1" | ||
| "github.com/k0sproject/k0s/pkg/config" | ||
| "github.com/k0sproject/k0s/pkg/constant" | ||
| k8sutil "github.com/k0sproject/k0s/pkg/kubernetes" | ||
| ) | ||
|
|
||
| // WindowsStackComponent implements the component interface | ||
| // controller unpacks windows manifests | ||
| // if windows nodes are present in the cluster | ||
| type WindowsStackComponent struct { | ||
| log logrus.FieldLogger | ||
|
|
||
| kubeClientFactory k8sutil.ClientFactoryInterface | ||
| k0sVars *config.CfgVars | ||
| saver manifestsSaver | ||
| prevRenderingContext windowsStackRenderingContext | ||
| } | ||
|
|
||
| type windowsStackRenderingContext struct { | ||
| CNIBin string | ||
| CNIConf string | ||
| Mode string | ||
| KubeAPIHost string | ||
| KubeAPIPort string | ||
| IPv4ServiceCIDR string | ||
| Nameserver string | ||
| NodeImage string | ||
|
|
||
| KubeProxyImage string | ||
| KubeProxyVersion string | ||
| } | ||
|
|
||
| // NewWindowsStackComponent creates new WindowsStackComponent reconciler | ||
| func NewWindowsStackComponent(k0sVars *config.CfgVars, clientFactory k8sutil.ClientFactoryInterface, saver manifestsSaver) *WindowsStackComponent { | ||
| return &WindowsStackComponent{ | ||
| log: logrus.WithFields(logrus.Fields{"component": "WindowsNodeController"}), | ||
| saver: saver, | ||
| kubeClientFactory: clientFactory, | ||
| k0sVars: k0sVars, | ||
| } | ||
| } | ||
|
|
||
| // Init no-op | ||
| func (n *WindowsStackComponent) Init(_ context.Context) error { | ||
| return nil | ||
| } | ||
|
|
||
| // Run checks and adds labels | ||
| func (n *WindowsStackComponent) Start(ctx context.Context) error { | ||
|
|
||
| go func() { | ||
| timer := time.NewTicker(1 * time.Minute) | ||
| defer timer.Stop() | ||
| for { | ||
| select { | ||
| case <-ctx.Done(): | ||
| return | ||
| case <-timer.C: | ||
| if err := n.handleWindowsNode(ctx, n.prevRenderingContext); err != nil { | ||
| n.log.Errorf("failed to handle windows node: %v", err) | ||
| } | ||
| } | ||
| } | ||
| }() | ||
|
|
||
| return nil | ||
| } | ||
|
|
||
| func (n *WindowsStackComponent) handleWindowsNode(ctx context.Context, cfg windowsStackRenderingContext) error { | ||
| client, err := n.kubeClientFactory.GetClient() | ||
| if err != nil { | ||
| return fmt.Errorf("failed to get kube client: %v", err) | ||
| } | ||
| nodes, err := client.CoreV1().Nodes().List(ctx, metav1.ListOptions{ | ||
| LabelSelector: "kubernetes.io/os=windows", | ||
| }) | ||
| if err != nil { | ||
| n.log.Errorf("failed to get node list: %v", err) | ||
| return fmt.Errorf("failed to get node list: %v", err) | ||
| } | ||
|
|
||
| if len(nodes.Items) == 0 { | ||
| // TODO: may be delete windows stack if it exists | ||
| return nil | ||
| } | ||
|
|
||
| n.log.Infof("found %d windows nodes", len(nodes.Items)) | ||
| if err := n.createWindowsStack(n.prevRenderingContext); err != nil { | ||
| n.log.Errorf("failed to create windows stack: %v", err) | ||
| return fmt.Errorf("failed to create windows stack: %v", err) | ||
| } | ||
| n.log.Infof("successfully created windows stack") | ||
| return nil | ||
| } | ||
|
|
||
| func (n *WindowsStackComponent) Reconcile(_ context.Context, cfg *v1beta1.ClusterConfig) error { | ||
| if cfg.Spec.Network.Provider != "calico" { | ||
| return nil | ||
| } | ||
|
|
||
| existingCNI := existingCNIProvider(n.k0sVars.ManifestsDir) | ||
| if existingCNI != "" && existingCNI != constant.CNIProviderCalico { | ||
| return nil | ||
| } | ||
| newConfig, err := n.makeRenderingContext(cfg) | ||
| if err != nil { | ||
| return fmt.Errorf("failed to make calico rendering context: %v", err) | ||
| } | ||
| if !reflect.DeepEqual(newConfig, n.prevRenderingContext) { | ||
| n.prevRenderingContext = newConfig | ||
| } | ||
|
|
||
| return nil | ||
| } | ||
| func (n *WindowsStackComponent) makeRenderingContext(cfg *v1beta1.ClusterConfig) (windowsStackRenderingContext, error) { | ||
| dns, err := cfg.Spec.Network.DNSAddress() | ||
| if err != nil { | ||
| return windowsStackRenderingContext{}, fmt.Errorf("failed to parse dns address: %v", err) | ||
| } | ||
|
|
||
| return windowsStackRenderingContext{ | ||
| // template rendering unescapes double backslashes | ||
| CNIBin: "c:\\\\opt\\\\cni\\\\bin", | ||
| CNIConf: "c:\\\\opt\\\\cni\\\\conf", | ||
| Mode: cfg.Spec.Network.Calico.Mode, | ||
| KubeAPIHost: cfg.Spec.API.Address, | ||
| KubeAPIPort: fmt.Sprintf("%d", cfg.Spec.API.Port), | ||
| IPv4ServiceCIDR: cfg.Spec.Network.ServiceCIDR, | ||
| Nameserver: dns, | ||
| NodeImage: "calico/windows:v3.23.5", | ||
| KubeProxyImage: "sigwindowstools/kube-proxy", | ||
| KubeProxyVersion: "v1.27.1-calico-hostprocess", | ||
| }, nil | ||
| } | ||
|
|
||
| // Stop no-op | ||
| func (n *WindowsStackComponent) Stop() error { | ||
| return nil | ||
| } | ||
|
|
||
| // createWindowsStack creates windows stack | ||
|
|
||
| func (n *WindowsStackComponent) createWindowsStack(newConfig windowsStackRenderingContext) error { | ||
| manifestDirectories, err := static.AssetDir("manifests/windows") | ||
| if err != nil { | ||
| return fmt.Errorf("error retrieving manifests: %v", err) | ||
| } | ||
| for _, dir := range manifestDirectories { | ||
| manifestPaths, err := static.AssetDir(fmt.Sprintf("manifests/windows/%s", dir)) | ||
| if err != nil { | ||
| return fmt.Errorf("error retrieving manifests: %s. will retry", err.Error()) | ||
| } | ||
| tryAndLog := func(name string, e error) { | ||
| n.log.Debugf("writing manifest %s", name) | ||
| if e != nil { | ||
| n.log.Errorf("failed to write manifest %s: %v, will re-try", name, e) | ||
| } | ||
| } | ||
|
|
||
| for _, filename := range manifestPaths { | ||
| manifestName := fmt.Sprintf("windows-%s-%s", dir, filename) | ||
| output := bytes.NewBuffer([]byte{}) | ||
| n.log.Debugf("Reading manifest template %s", manifestName) | ||
| contents, err := static.Asset(fmt.Sprintf("manifests/windows/%s/%s", dir, filename)) | ||
| if err != nil { | ||
| return fmt.Errorf("can't unpack manifest %s: %v", manifestName, err) | ||
| } | ||
|
|
||
| tw := templatewriter.TemplateWriter{ | ||
| Name: fmt.Sprintf("windows-%s-%s", dir, strings.TrimSuffix(filename, filepath.Ext(filename))), | ||
| Template: string(contents), | ||
| Data: newConfig, | ||
| } | ||
| tryAndLog(manifestName, tw.WriteToBuffer(output)) | ||
| tryAndLog(manifestName, n.saver.Save(manifestName, output.Bytes())) | ||
| } | ||
| } | ||
| return nil | ||
| } |
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