Systemd Failed To Start Services And Resulted in Error: "Failed to get D-Bus connection: No such file or directory" in Oracle Linux 7.x (Doc ID 2644460.1)

Last updated on FEBRUARY 11, 2024

Applies to:

Symptoms

 In Oracle Linux 7.x server, systemd was broken and thus the services including SSH failed to start.

The error seen in the console logs were:

[FAILED] Failed to start udev Kernel Device Manager.
See 'systemctl status systemd-udevd.service' for details.
[ OK ] Started Flush Journal to Persistent Storage.
[ OK ] Stopped udev Kernel Device Manager.
[FAILED] Failed to start udev Kernel Device Manager.
See 'systemctl status systemd-udevd.service' for details.
[FAILED] Failed to start Configure read-only root support.
See 'systemctl status rhel-readonly.service' for details.
[ OK ] Stopped udev Kernel Device Manager.
[FAILED] Failed to start udev Kernel Device Manager.
See 'systemctl status systemd-udevd.service' for details.
[FAILED] Failed to start Load/Save Random Seed.
See 'systemctl status systemd-random-seed.service' for details.
[FAILED] Failed to start Monitoring of LVM2 ...ng dmeventd or progress polling.
See 'systemctl status lvm2-monitor.service' for details.
[ OK ] Started Apply Kernel Variables.
[FAILED] Failed to start udev Coldplug all Devices.
See 'systemctl status systemd-udev-trigger.service' for details.
[ TIME ] Timed out waiting for device dev-disk-by\x2dlabel-bootfs.device.
[DEPEND] Dependency failed for File System Check on /dev/disk/by-label/bootfs.
[DEPEND] Dependency failed for /boot.
[DEPEND] Dependency failed for Local File Systems.
[DEPEND] Dependency failed for Relabel all filesystems, if necessary.
[DEPEND] Dependency failed for Migrate local... structure to the new structure.

[DEPEND] Dependency failed for /boot/efi.
[ TIME ] Timed out waiting for device dev-ma...olGroupSys\x2dLogVolSwap.device.
[DEPEND] Dependency failed for /dev/mapper/VolGroupSys-LogVolSwap.
[DEPEND] Dependency failed for Swap.
[ TIME ] Timed out waiting for device dev-disk-by\x2dlabel-BOOTEFI.device.
[DEPEND] Dependency failed for File System Check on /dev/disk/by-label/BOOTEFI.
[ TIME ] Timed out waiting for device dev-ttyS0.device.
[FAILED] Failed to start Preprocess NFS configuration.
See 'systemctl status nfs-config.service' for details.
[FAILED] Failed to start Apply Ksplice updates.
See 'systemctl status uptrack.service' for details.
[ OK ] Reached target Timers.
[ OK ] Reached target Login Prompts.
[ OK ] Reached target Network.
[ OK ] Reached target Network is Online.

Changes

Cause

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