Public bug reported:
We use MAAS 2.3.5 to install Ubuntu to a cluster of computers, where
each computer boots via PXE. Each computer has 2 NICs. If you disable
one of the NICs, then when you boot the computer with Bionic (18.04),
immediately after it loads the Ramdisk (boot-initrd), the computer
immediately reboots. This continues in a loop. This seems like a
regression from 16.04.
Here are the steps to reproduce:
1. Add new computer as MAAS node
2. Commission the node in MAAS
3. In MAAS, go to Interfaces, select the unused NIC and select Remove Physical
4. Deploy the node using 18.04
Note that once you remove the unused NIC, you can reproduce this both in
MAAS Commission and MAAS Deployment. My guess is that when the init
script runs from the ramdisk, it tries to load the unused NIC and it
fails. unfortunately, the minimal PXE install (kernel + ramdisk) does
not print diagnostic info.
Here are the steps to resolve this:
1. Commission the broken node using 16.04
2. Ensure both NICs are present under MAAS Interfaces
3. Deploy the node using 18.04
** Affects: ubuntu
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1809996
Title:
PXE network boot fails when 1 NIC is disabled
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