Users Guide

Managing chassis failover
Failover is applicable in dual management module configuration and is the process of transferring the active role to the standby
management module. Reboot the active management module and re-initialize the stand-by management module to assume the
active role. The failover operation takes up to 10 minutes for completion. OME–Modular is unavailable during this process. You
must have the chassis administrator privilege to start a failover.
NOTE: After a failover, the chassis management performance returns to normal in a few minutes.
NOTE: During a failover, the chassis power state on the OME–Modular GUI is displayed as "off". The original power state is
displayed after the inventory is refreshed.
To start a failover:
On the chassis Overview page, click More Actions > Failover.
A message is displayed stating that the system cannot be accessed during a failover.
Troubleshooting in chassis
The Troubleshoot option on the OME–Modular home page enables you to use the following options to resolve issues that occur
in the chassis:
● Extract Log—Use this option to extract application logs and save them to the NFS or CIFS locations on the network.
● Diagnostic Commands—Use this option to run diagnostic commands and parameters to troubleshoot the chassis network.
● Reset Management Module—Use this option to reboot the management module (MM) in a single management module
configuration, and perform a failover in a dual MM configuration.
NOTE:
During a factory reset process, the synchronization takes about 3-5 minutes. During this period, the serial, KVM,
and Quick Sync interfaces do not accept the factory password and the login attempt fails.
● Terminate Serial Connection—Use this option to end the existing serial sessions.
Blinking LEDs
You can use the Blink LED option on the OME–Modular home page to turn off or turn on the chassis LED.
Interfaces to access OME-Modular
After configuring the network settings in OME–Modular, you can remotely access OME-Modular using various interfaces. The
following table lists the interfaces that you can use to remotely access OME–Modular.
Table 12. Management module Interfaces (continued)
Interface Description
Web interface Provides remote access to OME–Modular using a graphical user interface. The web
interface is built into the OME–Modular firmware and is accessed through the NIC
interface from a supported web browser on the management station. The number of
user sessions that are allowed for each interface is:
● Web interface – 6
● RESTful API – 32
● SSH – 4
For a list of supported web browsers, see the Supported browsers section in the
OME - Modular for PowerEdge MX7000 Chassis Release Notes available at https://
www.dell.com/openmanagemanuals.
Remote RACADM command-line
interface
Use this command-line utility to manage OME–Modular and its components. You can
use remote or firmware RACADM:
● Remote RACADM is a client utility that runs on a management station. It uses the
out-of-band network interface to run RACADM commands on the managed system
54 Logging in to OME-Modular