Exadata: What is the MSUser and can the password be changed?

Asset ID:	1-71-1900944.1
Update Date:	2014-07-21
Keywords:

Solution Type Technical Instruction Sure

Solution 1900944.1 : Exadata: What is the MSUser and can the password be changed?

Applies to:

Exadata X3-8 Hardware - Version All Versions and later
Exadata X3-2 Hardware - Version All Versions and later
Exadata X3-8b Hardware - Version All Versions and later
Exadata X4-2 Hardware - Version All Versions and later
Exadata Database Machine X2-8 - Version All Versions and later
Information in this document applies to any platform.

Goal

To clarify the purpose of the MSUser on an Exadata Database machine.

Solution

What is purpose of the MSUser?

The MSUser account exists on the Storage Server's ILOM. The account is used by the Exadata Storage Server Software to manage the ILOM and reset it if it detects a hang.

Can the password be changed for security reasons?

There is NO default password. The user is created with a random password upon service startup and the password is only valid throughout one session and is not persisted anywhere. Upon MS service restart, MSUser will be assigned a new random password. Users should not change the password, otherwise, the automatic ILOM monitoring capability will be compromised.

References

<NOTE:1291766.1> - How to change OS user password for Cell Node, Database Node , ILOM, KVM , Infiniband Switch , GigaBit Ethernet Switch and PDU on Exadata Database Machine
<NOTE:1068804.1> - Guidelines for enhancing the security for an Oracle Database Machine deployment
<NOTE:1396654.1> - Security Hardening on Exadata

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