I have gone through the pain of figuring out how to login into HP ILO 100, so I decided to share my findings for benefit of others.
Step1)
Use dos bootable USB memory stick with HP Dos version of ipmitool and reset password as outlined in the post by Kotate.
ipmitool.exe 20 18 47 03 02 61 64 6d 69 6e 00 00 00 00 00 00 00 00 00 00 00
Try to login as admin/admin. If it works, you are done. If it doesn't work, somebody changed the user name. Continue with step 2.
Step2)
You need openipmi tools for Linux. That tool is able to list the users. HP Dos tool doesn't support same command line parameters and therefore you cannot use same syntax as shown bellow. Maybe there is a way how to do same with HP Dos ipmitool, but I didn't find how.
Use any Linux distribution you like. It can be Ubuntu live CD, Backtrack, or any other you are familiar with. Boot the server of that CD/USB. Either have ipmitool already installed prior to boot, or use commands to install it after successful boot.
This is not a detailed instruction how to install it on Linux and how to get it working, it is just general guide line, because I didn’t capture exact steps when I was doing it.
In my case I used Backtrack5 live CD. I booted of that CD and made all the changes to make sure that the server has access to Internet. Backtrack is Debian based distribution, so those steps should work with Ubuntu and other distributions as well.
Next update package repository information – apt-get update. When completed, you can search for packages by typing apt-cache search ipmi. I installed ipmitool package and few more (I don’t remember the exact list and I am not sure which are required except ipmitool). You also need to have ipmi kernel modules loaded, otherwise tool will complain that /dev/ipmi device driver is missing. Load the modules by modprobe <module name>. I loaded following modules: ipmi_msghandler and ipmi_si. After that you should have your device drivers and you are good to go.
Run command ipmitool user list. The command will list all the set users in your ILO. Look for user on position number 3. Use that user and password admin (set in a step number 1) to get into ILO.
The information about using Linux openipmi and ipmitool I found in this thread:
http://h30499.www3.hp.com/t5/ProLiant-Servers-ML-DL-SL/DL145-G2-iLO-password-reset/m-p/5354213/highlight/true#M124225. Credit goes to coredump4.
I hope this helps. Good luck.
I also wanted to thank HP for making it soooo complicated. Why there is no factory reset which would help in such situation????
