Resetting HP ILO from OS
You can use ipmitool package in Linux to reset your HP server’s ILO password. The basic instructions are below.
yum install ipmitool -y ; modprobe ipmi_devintf ; user=admin ; pass=******* ; for i in `ipmitool user list|grep -E "\s${user}\s"|awk '{print $1}'` ; do ipmitool user set password ${i} ${pass} ; done ; echo "${user}:${pass}@`ipmitool lan print |grep -E "^IP Address\s\s" | awk '{print $NF}'`"
The command will reset the password for every account matching the specified username (you can have multiple ILO accounts with identical names) and will show you the configured ILO IP address.