dhclient Stop During Boot
(Doc ID 2681457.1)
Last updated on MARCH 29, 2021
Applies to:
Oracle Cloud Infrastructure - Version N/A and laterLinux OS - Version Oracle Linux 7.0 and later
Linux x86-64
Symptoms
The system will loose network connectivity some time after the startup.
During the boot,
Checking the logs with:
# journal -xb
Will show the following:
Jun 08 02:54:14 <HOSTNAME> systemd[1]: Stopping LSB: Bring up/down networking...
-- Subject: Unit network.service has begun shutting down
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit network.service has begun shutting down.
Jun 08 02:54:14 <HOSTNAME> network[3630]: ERROR : [/etc/rc.d/init.d/network] rootfs or /usr is on network filesystem, leaving network up
Jun 08 02:54:14 <HOSTNAME> /etc/rc.d/init.d/network[3647]: rootfs or /usr is on network filesystem, leaving network up
Jun 08 02:54:14 <HOSTNAME> systemd[1]: network.service: control process exited, code=exited status=1 ««««««««««««««««««««««««
Jun 08 02:54:14 <HOSTNAME> systemd[1]: Stopped LSB: Bring up/down networking.
-- Subject: Unit network.service has finished shutting down
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
--
-- Unit network.service has finished shutting down.
Jun 08 02:54:14 <HOSTNAME> systemd[1]: Unit network.service entered failed state. ««««««««««««««««««««««««
Jun 08 02:54:14 <HOSTNAME> systemd[1]: network.service failed. ««««««««««««««««««««««««
Jun 08 02:54:14 <HOSTNAME> systemd[1]: Starting LSB: Bring up/down networking...
-- Subject: Unit network.service has begun start-up
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-devel
/var/log/messages have the following messages:
Jun 8 02:54:14 <HOSTNAME> dhclient[3731]: Dispatch routine failed: time changed -- exiting
Jun 8 02:54:14 <HOSTNAME> dhclient[3731]:
Jun 8 02:54:14 <HOSTNAME> dhclient[3731]: This version of ISC DHCP is based on the release available
Jun 8 02:54:14 <HOSTNAME> dhclient[3731]: on ftp.isc.org. Features have been added and other changes
Jun 8 02:54:14 <HOSTNAME> dhclient[3731]: have been made to the base software release in order to make
Jun 8 02:54:14 <HOSTNAME> dhclient[3731]: it work better with this distribution.
Jun 8 02:54:14 <HOSTNAME> dhclient[3731]:
Jun 8 02:54:14 <HOSTNAME> dhclient[3731]: Please report for this software via the Oracle site:
Jun 8 02:54:14 <HOSTNAME> dhclient[3731]: http://linux.oracle.com
Jun 8 02:54:14 <HOSTNAME> dhclient[3731]:
Jun 8 02:54:14 <HOSTNAME> dhclient[3731]: exiting.
After the boot, the dhclient process is not running:
$ ps -ef | grep dhclient | grep -v grep
Won't return any process.
Changes
Cause
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| Symptoms |
| Changes |
| Cause |
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