Comment 42 for bug 1865515

Using "exit 1" to to chainboot breaks if there is no UEFI boot entry. MAAS currently has two known bugs where this is the case. There may be more, we need to test all operating systems MAAS supports.

LP:1906379 - Ubuntu is removing the UEFI boot entry during shutdown for CentOS.
LP:1910600 - MAAS does not create a UEFI boot entry for VMware ESXi 6.7

If we apply the patch in #41 we will be breaking existing deployments. There is no way for MAAS to fix this, the user will have to manually login and configure the system.

config.local.amd64.template originally chainbooted to the operating system based on the operating system name. We had to change this because MAAS has no way to know what operating system a custom image is or how to handle when RHEL changed its UEFI path. For example is custom/myimage Ubuntu, CentOS, Windows or VMware?

I'm hesitant to use this fix as we will likely be breaking existing deployments.