86 lines
2.6 KiB
Go
86 lines
2.6 KiB
Go
/*
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Copyright 2024 The Kubernetes Authors All rights reserved.
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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 main
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import (
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"context"
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"os"
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"os/exec"
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"path/filepath"
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"regexp"
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"strings"
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"time"
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"k8s.io/minikube/hack/update"
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"k8s.io/klog/v2"
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)
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func main() {
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if _, err := exec.LookPath("helm"); err != nil {
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klog.Fatal("helm not found on system, either install or add to PATH")
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}
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ctx, cancel := context.WithTimeout(context.Background(), 1*time.Minute)
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defer cancel()
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stable, _, _, err := update.GHReleases(ctx, "cilium", "cilium")
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if err != nil {
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klog.Fatalf("Unable to get stable version: %v", err)
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}
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version := strings.TrimPrefix(stable.Tag, "v")
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// Add the cilium repo to helm
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addRepoCmd := exec.Command("helm", "repo", "add", "cilium", "https://helm.cilium.io/")
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if err := addRepoCmd.Run(); err != nil {
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klog.Fatalf("failed to run command %v: %v", addRepoCmd.Args, err)
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}
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if err := exec.Command("helm", "repo", "update").Run(); err != nil {
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klog.Fatalf("failed to update help repo %v", err)
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}
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// Generate the cilium YAML
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templateCmd := exec.Command("helm", "template", "cilium", "cilium/cilium", "--version", version, "--namespace", "kube-system")
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yamlBytes, err := templateCmd.Output()
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if err != nil {
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klog.Fatalf("failed to run command %v: %v", templateCmd.Args, err)
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}
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yaml := string(yamlBytes)
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// Remove the cilium/templates/cilium-ca-secret.yaml section
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re := regexp.MustCompile(`# Source: cilium\/templates\/cilium-ca-secret\.yaml(\n.*?)+---\n`)
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yaml = re.ReplaceAllString(yaml, "")
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// Remove the cilium/templates/hubble/tls-helm/server-secret.yaml section
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re = regexp.MustCompile(`# Source: cilium\/templates\/hubble\/tls-helm\/server-secret\.yaml(\n.*?)+---\n`)
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yaml = re.ReplaceAllString(yaml, "")
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// Replace `cluster-pool-ipv4-cidr` with PodSubnet template
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re = regexp.MustCompile(`10\.0\.0\.0\/8`)
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yaml = re.ReplaceAllString(yaml, "{{ .PodSubnet }}")
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// Change replicas to 1
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re = regexp.MustCompile(`replicas:.+`)
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yaml = re.ReplaceAllString(yaml, "replicas: 1")
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filename := filepath.Join(update.FSRoot, "pkg/minikube/cni/cilium.yaml")
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if err := os.WriteFile(filename, []byte(yaml), 0644); err != nil {
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klog.Fatal(err)
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}
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}
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