mirror of https://github.com/kubernetes/kops.git
91 lines
2.6 KiB
Go
91 lines
2.6 KiB
Go
/*
|
|
Copyright 2019 The Kubernetes 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 distributions
|
|
|
|
import (
|
|
"fmt"
|
|
"io/ioutil"
|
|
"path"
|
|
"strings"
|
|
|
|
"k8s.io/klog/v2"
|
|
)
|
|
|
|
// FindDistribution identifies the distribution on which we are running
|
|
func FindDistribution(rootfs string) (Distribution, error) {
|
|
// All supported distros have an /etc/os-release file
|
|
osReleaseBytes, err := ioutil.ReadFile(path.Join(rootfs, "etc/os-release"))
|
|
osRelease := make(map[string]string)
|
|
if err == nil {
|
|
for _, line := range strings.Split(string(osReleaseBytes), "\n") {
|
|
line = strings.TrimSpace(line)
|
|
if strings.HasPrefix(line, "ID=") {
|
|
osRelease["ID"] = strings.Trim(line[3:], "\"")
|
|
}
|
|
if strings.HasPrefix(line, "VERSION_ID=") {
|
|
osRelease["VERSION_ID"] = strings.Trim(line[11:], "\"")
|
|
}
|
|
}
|
|
} else {
|
|
return Distribution{}, fmt.Errorf("reading /etc/os-release: %v", err)
|
|
}
|
|
|
|
distro := fmt.Sprintf("%s-%s", osRelease["ID"], osRelease["VERSION_ID"])
|
|
|
|
// Most distros have a fixed VERSION_ID
|
|
switch distro {
|
|
case "amzn-2":
|
|
return DistributionAmazonLinux2, nil
|
|
case "centos-7":
|
|
return DistributionCentos7, nil
|
|
case "centos-8":
|
|
return DistributionCentos8, nil
|
|
case "debian-9":
|
|
return DistributionDebian9, nil
|
|
case "debian-10":
|
|
return DistributionDebian10, nil
|
|
case "ubuntu-16.04":
|
|
return DistributionUbuntu1604, nil
|
|
case "ubuntu-18.04":
|
|
return DistributionUbuntu1804, nil
|
|
case "ubuntu-20.04":
|
|
return DistributionUbuntu2004, nil
|
|
case "ubuntu-20.10":
|
|
return DistributionUbuntu2010, nil
|
|
case "ubuntu-21.04":
|
|
return DistributionUbuntu2104, nil
|
|
}
|
|
|
|
// Some distros have a more verbose VERSION_ID
|
|
if strings.HasPrefix(distro, "cos-") {
|
|
return DistributionContainerOS, nil
|
|
}
|
|
if strings.HasPrefix(distro, "flatcar-") {
|
|
return DistributionFlatcar, nil
|
|
}
|
|
if strings.HasPrefix(distro, "rhel-7.") {
|
|
return DistributionRhel7, nil
|
|
}
|
|
if strings.HasPrefix(distro, "rhel-8.") {
|
|
return DistributionRhel8, nil
|
|
}
|
|
|
|
// Some distros are not supported
|
|
klog.V(2).Infof("Contents of /etc/os-release:\n%s", osReleaseBytes)
|
|
return Distribution{}, fmt.Errorf("unsupported distro: %s", distro)
|
|
}
|