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Recovering SOL after time zone change - Lenovo ThinkSystem SN550 (7X16)

Recovering SOL after time zone change - Lenovo ThinkSystem SN550 (7X16)

Recovering SOL after time zone change - Lenovo ThinkSystem SN550 (7X16)

Symptom

The network interface may be disconnected due to a system time change that affects the dhclient module.

Affected Configurations

The system may be any of the following Lenovo servers:

  • ThinkSystem SN550, any model 7X16

The system is configured with at least one of the following:

  • RHEL 7, See below for specific versions

This tip is not option specific.

The system has the symptom described above.

Note: This does not imply that the network operating system will work under all combinations of hardware and software.
Please see the compatibility page for more information:

http://www.lenovo.com/us/en/serverproven/

Solution

This is a permanent restriction, there will be no solution.

Workaround

To solve this issue, users will need to be able to access the host and try the following command for recovering:

1) The devices recognized by NetworkManager and their state:

$ nmcli device status
DEVICE TYPE STATE CONNECTION
ens3 ethernet connected my-office
usb0 ethernet disconnected --
lo loopback unmanaged --

2) Reconnect the devices:

$ nmcli device connect usb0

The SoL (Serial Over LAN) will be available.

Additional Information

Refer to the Red Hat bugzilla 1093803 for reference.

https://bugzilla.redhat.com/show_bug.cgi?id=1093803

abstract: dhclient fails to renew IP address lease after system time changes

Alias Id:98361
Document ID:HT505256
Original Publish Date:09/15/2017
Last Modified Date:09/19/2024