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Whenever we chage the bootloader from Grub2 UEFI to PXELinux BIOS, or vice versa, the foreman smart proxy start creating duplicate dhcp entries for this host.
how to repoduce:
1. create host with PXELinux BIOS bootloader
2. modify host to to use Grub2 UEFI
2. press submit (you will get a modal saying there already is a dhcp enty, and if you like to overwrite it)
3. acknowledge the modal and press the "overwrite" botton
4. now the "submit" button of the host is named "overwrite" -> press it
5. you will get a error message, complaining about a HTTP 409 from the dhcp smart proxy
if you check the leases file of the dhcp server, you will now have at least 2 entries for the same host. i have already see up to 33 entries for the same host within a file.
it also seems that the deleting a host will not always remove a entry from the dhcp leases file, but i have to admit that i am not 100% sure if the host will directly disappear from the leases file after it has been deleted.
to "fix" the issue, you have to:
- delete the host
- stop dhcpd
- remove broken entries from leases file
- start dhcpd
- recreate the host
Comment 4Satellite Program
2018-02-21 16:54:37 UTC
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA.
> >
> > For information on the advisory, and where to find the updated files, follow the link below.
> >
> > If the solution does not work for you, open a new bug report.
> >
> > https://access.redhat.com/errata/RHSA-2018:0336