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OCI: Systemd Failed To Start Services And Resulted in Error: "Failed to get D-Bus connection

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edited Aug 9, 2022 4:55PM in Linux

Applies to: 

Oracle Cloud Infrastructure

Linux OS – Version Oracle Linux 7.0 and later

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

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