Exadata: make a cell or a DB node blink !

Hardware issues happen and when it happens on Exadata systems, you need to have an Oracle Field Engineer to go into your Datacenter and replace the faulty part. What also happens is that you have many Exadatas in your datacenter, your CMDB is not really up to date and as a result, the Field Engineer is in trouble locating the Exadata component he needs to replace something faulty in.
Hopefully, the ILOMs have a very cool feature and you can make a cell or a DB node blink ! (then easy to locate)

First of all, connect to the ILOM and check the /SP/LOCATE property:

-> show /SYS/LOCATE
/SYS/LOCATE
    Targets:
    Properties:
        type = Indicator
        ipmi_name = LOCATE
        value = Off            <=== OFF
    Commands:
        cd
        set
        show
->

Let's make it blink:

-> set /SYS/LOCATE value=fast_blink
Set 'value' to 'fast_blink' [Fast Blink]
-> show /SYS/LOCATE
/SYS/LOCATE
    Targets:
    Properties:
        type = Indicator
        ipmi_name = LOCATE
        value = Fast Blink     <=== It blinks !
    Commands:
        cd
        set
        show
->

Once the Field Engineer has located your blinking component, it is time to stop the blinking -- I know it is very fun so let it a couple more minutes and then stop it:

-> set /SYS/LOCATE value=off
Set 'value' to 'off' [Off]
-> show /SYS/LOCATE
/SYS/LOCATE
    Targets:
    Properties:
        type = Indicator
        ipmi_name = LOCATE
        value = Off            <=== OFF
    Commands:
        cd
        set
        show
->

This is be very useful, I use it a lot !