Cody Bunch Some Random IT Guy - OpenStack, DevOps, Cloud, Things

Cheat Sheet - ipmitool

29 May 2018

Some quick commands I’ve found handy for operating remote systems via ipmitool:

Check status:

root@lab-c:~# ipmitool -I lan -H 10.127.20.10 -U root chassis status
Password:
System Power         : off
Power Overload       : false
Power Interlock      : inactive
Main Power Fault     : false
Power Control Fault  : false
Power Restore Policy : unknown
Last Power Event     :
Chassis Intrusion    : inactive
Front-Panel Lockout  : inactive
Drive Fault          : false
Cooling/Fan Fault    : false
Sleep Button Disable : allowed
Diag Button Disable  : allowed
Reset Button Disable : allowed
Power Button Disable : allowed
Sleep Button Disabled: false
Diag Button Disabled : false
Reset Button Disabled: false
Power Button Disabled: false

Power Operations:

Useful here are on, off, soft, cycle, reset:

root@lab-c:~# ipmitool -I lan -H 10.127.20.10 -U root power on
Chassis Power Control: Up/On

root@lab-c:~# ipmitool -I lan -H 10.127.20.10 -U root power off
Chassis Power Control: Down/Off

root@lab-c:~# ipmitool -I lan -H 10.127.20.10 -U root power soft

root@lab-c:~# ipmitool -I lan -H 10.127.20.10 -U root power reset

Change to / from pxe boot:

root@lab-c:~# ipmitool -I lan -H 10.127.20.10 -U root chassis bootdev pxe
Set Boot Device to pxe

root@lab-c:~# ipmitool -I lan -H 10.127.20.10 -U root chassis bootdev bios
Set Boot Device to bios

Reset the ipmi controller:

Note: This may need to be sent more than once to actually do the thing.

root@lab-c:~# ipmitool -I lan -H 10.127.20.10 -U root  mc reset [ warm | cold ]
Sent cold reset command to MC

Set a bunch of hosts to pxe & reboot:

Here I’ll supply two of these. The first will do hosts in parallel, with a random delay up to MAXWAIT. This is for any number of reasons. The primary being to be nice to the power infrastructure where you are performing the resets. It is also a useful snippet for chaos style resets.

seq -f "10.127.20.%g" 1 100 | xargs -I X "sleep $((RANDOM % MAXWAIT)) ipmitool -I lan -H X -U root chassis bootdev pxe && ipmitool -I lan -H X -U root power reset"

This second option is a bit more yolo, and fires off all the resets ta once.

seq -f "10.127.20.%g" 1 100 | xargs -I X "ipmitool -I lan -H X -U root chassis bootdev pxe && ipmitool -I lan -H X -U root power reset"

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