Exadata: Permission Errors as nm2user When Running Command: showtemps

Asset ID:	1-72-1904185.1
Update Date:	2014-08-28
Keywords:

Solution Type Problem Resolution Sure

Solution 1904185.1 : Exadata: Permission Errors as nm2user When Running Command: showtemps

Applies to:

Exadata X3-2 Hardware - Version All Versions and later
Information in this document applies to any platform.

Symptoms

The nm2user cannot run showtemps on one switch whereas running the command as root succeeds:

[nm2user@xxxxx ~]$ showtemps
Back temperature 28
Front temperature 30
WARNING Failed to read SP temperature -13 Permission denied
Switch temperature 42, maxtemperature 44
FAILURE 1 temperatures NOT OK

This may cause Enterprise Manager alerts to occur on your Exadata system since the temperatures in the IB switch cannot be collected.

Cause

The permission were incorrect on /dev/cpu/0/msr file:

[root@xxxxx ~]# ls -l /dev/cpu/0/msr
crw------- 1 root root 202, 0 Aug 19 2013 /dev/cpu/0/msr

The permissions on the IB switch should be:

[root@lab ~]# ls -l /dev/cpu/0/msr
crw-r--r-- 1 root root 202, 0 Jun 25 13:13 /dev/cpu/0/msr

Solution

As the "root" user change the permissions by running:

# chmod go+r /dev/cpu/0/msr

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