Is it possible to install the system on an iscsi disk via the Internet?

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vitalya_pn2014-06-20 10:38:57

iSCSI

vitalya_pn, 2014-06-20 10:38:57

I am interested in such a problem as installing and booting a system from an iscsi disk that is connected via the Internet, i.e. the drive is not on the home network. Searched for a solution but didn't find anything.
Those. so that you can connect to your iscsi disk from any place or computer and boot the system from it.
As far as I understand, this whole thing is twisted through DHCP and the computer must be on the same network in order to receive an address via PXE.
Please advise and point me in the right direction.

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1 answer(s)

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Cool Admin, 2014-06-20
@ifaustrue

To boot the system directly from an iSCSI disk, the network card must support the iSCSI initiator - this is true for server boards (they have 10G in general), or there must be a board directly designed to work with iSCSI - iSCSI HBA.
In another case, loading using this protocol will be impossible (except for situations where the motherboard BIOS code is able to map and boot from such a disk, but I have not seen such).
But you can install / boot the system via tftp from absolutely anywhere, even from the Internet, it is enough to pass the address of this server in DHCP option 66.
In total, in order to boot from an image available "somewhere out there" you need
1. The network must have DHCP
2. DHCP issues option 66 with a link to "somewhere out there"
3. This "out there" is available and supports tftp upload of bootloader and image.
* although maybe I didn’t take into account and / or I don’t know =)