UCS Central Registration and Troubleshooting

Introduction

This document describes the steps to register Cisco Unified Computing System - UCS domains with UCS Central. Prior to UCS Central release 1.5, the registration could only happen from UCS Manager. Release 1.5 onwards, registration can be done from both UCS Central and UCS Manager.

Components Used

UCS Central 2.0(1a)

UCS Manager 3.1(3a)

All devices used are lab devices

Procedure

Registration Process from UCS Domain:

Lauch UCS Manager and click on Admin-> Communication Management-> UCS Central.

Select Register with UCS Central .

Enter the Hostname/ IP Address and the Shared Secret of the UCS Central (Always a best practice to register UCS central using hostname, as IP address can be changed using the DNS entry, while the domain is registered) and click on Ok to start registration.

Policy Resolution Control can set while Registration. It can also be changed after Registration.

Monitor the FSM(Finite State Machine) status to check the registration process.

Registration Process from UCS Central:

Launch UCS Central and click on System tools and go to Domain Management.

Click on Register Domain at the right hand corner.

Enter the UCS Domain Hostname/IP Address  and the Admin User Name and Password. Select the Hostname/IP Address of UCS Central and click on Register. (Always a best practice to register UCS central using hostname as IP address can be changed using the DNS entry, while the domain is registered).

The FSM status can be monitored from the Configuration Status tab.

Troubleshooting Common Registration Issues:

Scenario 1: Admin password for UCS Domain is wrong when registering domain from UCS Central.

Fix: Correct the admin password and try the registration again.

FSM Status from UCS Central

Scenario 2: UCS Central and UCS Domain time is not synced.

Fix: Sync the time on UCS Central and UCS Domain and try the regiatration again.

Refer to Forced Time Sync in UCS Manager in the link below to correct the time.

https://www.cisco.com/c/en/us/td/docs/unified_computing/ucs/ucs-central/GUI-User-Guides/Operations/b_UCSC_Ops_Guide_2_0/b_UCSC_Ops_Guide_2_0_chapter_01100.html

FSM Status from UCS Manager

Scenario 3: Wrong shared secret is entered while Registration from UCS Domain.

Fix: Enter the right shared secret and try the regsistration again.

Refer to Resetting the Shared Secret in the link below to change the shared secret.

https://www.cisco.com/c/en/us/td/docs/unified_computing/ucs/ucs-central/install-upgrade/2-0/b_Cisco_UCSC_Install_and_Upgrade_Guide_2_0/b_Cisco_UCSC_Install_and_Upgrade_Guide_2_0_chapter_0101.html#task_8299DFA4853049068C7E384F5E8FF493

 FSM Status from UCS Manager

Scenario 4: UCS Central cannot communicate with UCS Manager during registration

Fix: Ensure that there is no firewall blocking communication between UCSM and UCS Central over 443.

 FSM Status from UCS Manager