mirror of https://github.com/kubernetes/kops.git
97 lines
2.7 KiB
Go
97 lines
2.7 KiB
Go
/*
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Copyright 2019 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 distributions
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import (
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"fmt"
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"os"
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"path"
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"strings"
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"k8s.io/klog/v2"
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)
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// FindDistribution identifies the distribution on which we are running
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func FindDistribution(rootfs string) (Distribution, error) {
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// All supported distros have an /etc/os-release file
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osReleaseBytes, err := os.ReadFile(path.Join(rootfs, "etc/os-release"))
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osRelease := make(map[string]string)
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if err == nil {
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for _, line := range strings.Split(string(osReleaseBytes), "\n") {
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line = strings.TrimSpace(line)
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if strings.HasPrefix(line, "ID=") {
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osRelease["ID"] = strings.Trim(line[3:], "\"")
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}
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if strings.HasPrefix(line, "VERSION_ID=") {
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osRelease["VERSION_ID"] = strings.Trim(line[11:], "\"")
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}
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}
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} else {
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return Distribution{}, fmt.Errorf("reading /etc/os-release: %v", err)
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}
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distro := fmt.Sprintf("%s-%s", osRelease["ID"], osRelease["VERSION_ID"])
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// Most distros have a fixed VERSION_ID
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switch distro {
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case "amzn-2":
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return DistributionAmazonLinux2, nil
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case "amzn-2023":
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return DistributionAmazonLinux2023, nil
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case "debian-10":
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return DistributionDebian10, nil
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case "debian-11":
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return DistributionDebian11, nil
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case "debian-12":
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return DistributionDebian12, nil
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case "debian-13":
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return DistributionDebian13, nil
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case "fedora-41":
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return DistributionFedora41, nil
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case "ubuntu-20.04":
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return DistributionUbuntu2004, nil
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case "ubuntu-22.04":
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return DistributionUbuntu2204, nil
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case "ubuntu-24.04":
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return DistributionUbuntu2404, nil
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}
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// Some distros have a more verbose VERSION_ID
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if strings.HasPrefix(distro, "cos-") {
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return DistributionContainerOS, nil
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}
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if strings.HasPrefix(distro, "flatcar-") {
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return DistributionFlatcar, nil
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}
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if strings.HasPrefix(distro, "rhel-8.") {
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return DistributionRhel8, nil
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}
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if strings.HasPrefix(distro, "rhel-9.") {
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return DistributionRhel9, nil
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}
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if strings.HasPrefix(distro, "rocky-8.") {
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return DistributionRocky8, nil
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}
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if strings.HasPrefix(distro, "rocky-9.") {
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return DistributionRocky9, nil
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}
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// Some distros are not supported
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klog.V(2).Infof("Contents of /etc/os-release:\n%s", osReleaseBytes)
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return Distribution{}, fmt.Errorf("unsupported distro %q", distro)
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}
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