How to boot from RHEL ISO on HP ILO CLI to recover a server ?
Suppose our system is down and is not booting up correctly.
We need to boot it from an ISO image/CD-DVD drive to repair the system back.
Lets have a look at the steps we can perform to boot our system from an ISO to recover the server which is not booting up on HP ILO.
1. Check out the current CD Drive configuration.
</>hpiLO-> show /map1/oemhp_vm1/cddr1
status=0
status_tag=COMMAND COMPLETED
Tue Jan 18 12:26:24 2022
/map1/oemhp_vm1/cddr1
Targets
Properties
oemhp_image=None
oemhp_connect=No
oemhp_boot=No_Boot
oemhp_wp=No
vm_applet=No
Verbs
cd version exit show set
As we can see above currently there is no CD/DVD drive/iso mapped and boot options are also not from CD.
2. Insert the ISO image from our ILO.
</>hpiLO-> vm cdrom insert http://ngelinux001/pub/rhel6.10/rhel6boot.iso status=0 status_tag=COMMAND COMPLETED Wed Jan 19 11:52:30 2022
3. Checkout if ISO drive is mapped now.
</>hpiLO-> show /map1/oemhp_vm1/cddr1
status=0
status_tag=COMMAND COMPLETED
Wed Jan 19 11:53:21 2022
/map1/oemhp_vm1/cddr1
Targets
Properties
oemhp_image=http://ngelinux001/pub/rhel6.10/rhel6boot.iso
oemhp_connect=No
oemhp_boot=No_Boot
oemhp_wp=Yes
vm_applet=No
Verbs
cd version exit show set
4. Connect the CD ROM drive to boot always.
</>hpiLO-> vm cdrom set connect status=0 status_tag=COMMAND COMPLETED Wed Jan 19 11:54:12 2022 </>hpiLO->
5. Check out the changes now.
</>hpiLO-> vm cdrom get info status=0 status_tag=COMMAND COMPLETED Wed Jan 19 11:55:01 2022 Image Connected = Yes Image URL = http://ngelinux001/pub/rhel6.10/rhel6boot.iso VM Applet = No Boot Option = BOOT_ALWAYS Write Protect = Yes </>hpiLO->
6. Reset/Reboot the system from ILO to boot from ISO now.
</>hpiLO-> power reset status=0 status_tag=COMMAND COMPLETED Wed Jan 19 11:55:37 2022 Server resetting .......
7. Take the serial console now to check progress.
</>hpiLO-> VSP
Virtual Serial Port Active: COM2
Starting virtual serial port.
Press 'ESC (' to return to the CLI Session.