mirror of
https://github.com/k3s-io/kubernetes.git
synced 2025-10-31 13:50:01 +00:00
117 lines
3.2 KiB
Go
117 lines
3.2 KiB
Go
/*
|
|
Copyright 2017 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 e2enode
|
|
|
|
import (
|
|
"fmt"
|
|
"strings"
|
|
|
|
"github.com/blang/semver"
|
|
systemdutil "github.com/coreos/go-systemd/util"
|
|
)
|
|
|
|
// getDockerAPIVersion returns the Docker's API version.
|
|
func getDockerAPIVersion() (semver.Version, error) {
|
|
output, err := runCommand("docker", "version", "-f", "{{.Server.APIVersion}}")
|
|
if err != nil {
|
|
return semver.Version{}, fmt.Errorf("failed to get docker server version: %v", err)
|
|
}
|
|
return semver.MustParse(strings.TrimSpace(output) + ".0"), nil
|
|
}
|
|
|
|
// isSharedPIDNamespaceSupported returns true if the Docker version is 1.13.1+
|
|
// (API version 1.26+), and false otherwise.
|
|
func isSharedPIDNamespaceSupported() (bool, error) {
|
|
version, err := getDockerAPIVersion()
|
|
if err != nil {
|
|
return false, err
|
|
}
|
|
return version.GTE(semver.MustParse("1.26.0")), nil
|
|
}
|
|
|
|
// isDockerLiveRestoreSupported returns true if live-restore is supported in
|
|
// the current Docker version.
|
|
func isDockerLiveRestoreSupported() (bool, error) {
|
|
version, err := getDockerAPIVersion()
|
|
if err != nil {
|
|
return false, err
|
|
}
|
|
return version.GTE(semver.MustParse("1.26.0")), nil
|
|
}
|
|
|
|
// getDockerInfo returns the Info struct for the running Docker daemon.
|
|
func getDockerInfo(key string) (string, error) {
|
|
output, err := runCommand("docker", "info", "-f", "{{."+key+"}}")
|
|
if err != nil {
|
|
return "", fmt.Errorf("failed to get docker info: %v", err)
|
|
}
|
|
return strings.TrimSpace(output), nil
|
|
}
|
|
|
|
// isDockerLiveRestoreEnabled returns true if live-restore is enabled in the
|
|
// Docker.
|
|
func isDockerLiveRestoreEnabled() (bool, error) {
|
|
info, err := getDockerInfo("LiveRestoreEnabled")
|
|
if err != nil {
|
|
return false, err
|
|
}
|
|
return info == "true", nil
|
|
}
|
|
|
|
// getDockerLoggingDriver returns the name of the logging driver.
|
|
func getDockerLoggingDriver() (string, error) {
|
|
info, err := getDockerInfo("LoggingDriver")
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
return info, nil
|
|
}
|
|
|
|
// isDockerSELinuxSupportEnabled checks whether the Docker daemon was started
|
|
// with SELinux support enabled.
|
|
func isDockerSELinuxSupportEnabled() (bool, error) {
|
|
info, err := getDockerInfo("SecurityOptions")
|
|
if err != nil {
|
|
return false, err
|
|
}
|
|
return strings.Contains(info, "name=selinux"), nil
|
|
}
|
|
|
|
// startDockerDaemon starts the Docker daemon.
|
|
func startDockerDaemon() error {
|
|
switch {
|
|
case systemdutil.IsRunningSystemd():
|
|
_, err := runCommand("systemctl", "start", "docker")
|
|
return err
|
|
default:
|
|
_, err := runCommand("service", "docker", "start")
|
|
return err
|
|
}
|
|
}
|
|
|
|
// stopDockerDaemon stops the Docker daemon.
|
|
func stopDockerDaemon() error {
|
|
switch {
|
|
case systemdutil.IsRunningSystemd():
|
|
_, err := runCommand("systemctl", "stop", "docker")
|
|
return err
|
|
default:
|
|
_, err := runCommand("service", "docker", "stop")
|
|
return err
|
|
}
|
|
}
|