HARDWARE: What to do if Sun[TM] Remote System Control (RSC) is configured and the password is forgotten

Asset ID:	1-71-1007570.1
Update Date:	2011-05-10
Keywords:

Solution Type Technical Instruction Sure

Solution 1007570.1 : HARDWARE: What to do if Sun[TM] Remote System Control (RSC) is configured and the password is forgotten

Applies to:

Sun Fire V480 Server
Sun Fire V490 Server
Sun Fire V880 Server
Sun Fire V890 Server
Sun Enterprise 250 Server
All Platforms
***Checked for relevance on 10-05-2011***

Goal

Description
This document describes the procedure to regain control of the RSC card if the username or password have been forgotten and the RSC card is set as the console.

Solution

Steps to Follow:

If the OBP is earlier than 4.15.x, then follow the steps listed below.

If the OBP is 4.15.0 or later, then the keyswitch can be put in the "diag" position to
enable "service mode".
Then, the system can be power cycled or reset remotely to force output to ttya.
See SRDB (Symptoms and Resolutions) Document 1009167.1 for more details on this.

STEP 1:
Access the system as root to create a new RSC user.

If root can login into system remotely then proceed to Step 2.

If root cannot access system remotely and RSC is currently the active
console then the only other way to gain access to the system console
would be through ttya.

However, because RSC is configured we would need
to change the system's output and input devices back to their default
settings. Setting these defaults can be accomplished by using one of
the following two methods:

* Method 1:
After turning on the power to your system, watch the front panel
wrench LED for rapid flashing during the boot process. Press the
front panel Power button twice (with a short, one-second delay
inbetween presses).

Notes:
The above procedure temporarily overrides certain nvram
parameters to their default settings.
The original values will be restored after the next
hardware or software reset.

* Method 2:
Remove RSC card.
By removing the RSC card, the output and input devices will forced
to ttya. For information on how to remove the RSC card, please refer
to the Server Owner's Guide.

When the system is at the ok prompt, manually set the input-device
and output-device parameters back to ttya. Once this has been done,
the RSC card can be re-installed into the system. For information on
how to install the RSC card, please refer to the Server Owner's Guide.

With both methods, when the console is on ttya, boot the OS and log in
as root.

STEP 2:

a. Execute the following 3 Solaris commands in order to create a new RSC

user with full permissions:

/usr/platform/`uname -i`/rsc/rscadm useradd

/usr/platform/`uname -i`/rsc/rscadm userperm cuar

/usr/platform/`uname -i`/rsc/rscadm userpassword

Note:

You may need to delete an RSC user if there are already 4 existing RSC users defined.

To check what users exist use:

/usr/platform/`uname -i`/rsc/rscadm usershow

To remove a user:

/usr/platform/`uname -i`/rsc/rscadm userdel

b. Reboot the RSC card.

c. Log into RSC using the login and password created in Step 2a.

d. If you used method 1 in step 1 above, you will have to reboot the
system to allow the RSC card to be used as the console again.

e. If you used method 2 in step 1 above, then you will have to return
your input-device and output-device to "rsc-console" to set up the
console as the RSC card again and reboot.

It is advisable to check that the login created in step 2a works prior to re-enabling the RSC console.

Internal Comments
Audited/updated 11/19/09 - Ian.Macdonald@Sun.COM, Entry Level SPARC Content Team Member

Authors:



   * suda.vang@sun.com
   * ford.stiles@sun.com
   * brian.ruthven@sun.com

Symptom Resolution Loss of RSC
console input/output on Sun Fire[TM] V480/V880 post upgrading OBP to
4.15.x

RSC, password, passwords, forgotten, rscadm, HARDWARE
Previously Published As
47745

Change History
Date: 2007-11-15
User Name: 97961
Action: Approved
Comment: Publishing. No further edits required.
Version: 12

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