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Diffstat (limited to 'libpod/runtime.go')
-rw-r--r--libpod/runtime.go21
1 files changed, 20 insertions, 1 deletions
diff --git a/libpod/runtime.go b/libpod/runtime.go
index 8f145a809..a06b2bb51 100644
--- a/libpod/runtime.go
+++ b/libpod/runtime.go
@@ -1474,6 +1474,25 @@ func (r *Runtime) GetOCIRuntimePath() string {
// TODO Once runc has support for cgroups, this function should be removed.
func cgroupV2Check(configPath string, tmpConfig *RuntimeConfig) error {
if !tmpConfig.CgroupCheck && rootless.IsRootless() {
+ if tmpConfig.CgroupManager == SystemdCgroupsManager {
+ // If we are running rootless and the systemd manager is requested, be sure that dbus is accessible
+ session := os.Getenv("DBUS_SESSION_BUS_ADDRESS")
+ hasSession := session != ""
+ if hasSession && strings.HasPrefix(session, "unix:path=") {
+ _, err := os.Stat(strings.TrimPrefix(session, "unix:path="))
+ hasSession = err == nil
+ }
+
+ if !hasSession {
+ logrus.Warningf("The cgroups manager is set to systemd but there is no systemd user session available")
+ logrus.Warningf("For using systemd, you may need to login using an user session")
+ logrus.Warningf("Alternatively, you can enable lingering with: `loginctl enable-linger %d` (possibily as root)", rootless.GetRootlessUID())
+ logrus.Warningf("Falling back to --cgroup-manager=cgroupfs")
+
+ tmpConfig.CgroupManager = CgroupfsCgroupsManager
+ }
+
+ }
cgroupsV2, err := cgroups.IsCgroup2UnifiedMode()
if err != nil {
return err
@@ -1487,7 +1506,7 @@ func cgroupV2Check(configPath string, tmpConfig *RuntimeConfig) error {
}
tmpConfig.CgroupCheck = true
tmpConfig.OCIRuntime = path
- file, err := os.OpenFile(configPath, os.O_RDWR|os.O_CREATE, 0666)
+ file, err := os.OpenFile(configPath, os.O_RDWR|os.O_CREATE|os.O_TRUNC, 0666)
if err != nil {
return errors.Wrapf(err, "cannot open file %s", configPath)
}