Vmm /
Create Debian ISO for VMM
To use VMM, the ISO image you provide must support the serial console. In this guide, we download and modify the debian ISO to boot from serial console.
Download and verify ISO
$ ftp https://cdimage.debian.org/debian-cd/current/amd64/iso-cd/debian-11.1.0-amd64-netinst.iso $ ftp https://cdimage.debian.org/debian-cd/current/amd64/iso-cd/SHA512SUMS $ ftp https://cdimage.debian.org/debian-cd/current/amd64/iso-cd/SHA512SUMS.sign
If gpg is not already installed:
$ doas pkg_add gnupg
then:
$ gpg --keyserver keyserver.ubuntu.com --recv-keys DF9B9C49EAA9298432589D76DA87E80D6294BE9B $ gpg --verify SHA512SUMS.sign SHA512SUMS gpg: Signature made Sat Aug 14 15:22:04 2021 CDT gpg: using RSA key DF9B9C49EAA9298432589D76DA87E80D6294BE9B gpg: Good signature from "Debian CD signing key <debian-cd@lists.debian.org>" [unknown] gpg: WARNING: This key is not certified with a trusted signature! gpg: There is no indication that the signature belongs to the owner. Primary key fingerprint: DF9B 9C49 EAA9 2984 3258 9D76 DA87 E80D 6294 BE9B # sha512 debian-11.0.0-amd64-netinst.iso SHA512 (debian-11.1.0-amd64-netinst.iso) = 5f6aed67b159d7ccc1a90df33cc8a314aa278728a6f50707ebf10c02e46664e383ca5fa19163b0a1c6a4cb77a39587881584b00b45f512b4a470f1138eaa1801 # grep debian-11.1.0-amd64-netinst.iso SHA512SUMS 5f6aed67b159d7ccc1a90df33cc8a314aa278728a6f50707ebf10c02e46664e383ca5fa19163b0a1c6a4cb77a39587881584b00b45f512b4a470f1138eaa1801 debian-11.1.0-amd64-netinst.iso
The two checksums must match perfectly or else you should stop installation.
We run these steps as root:
# vnconfig vnd0 debian-11.1.0-amd64-netinst.iso # mkdir old new # mount -t cd9660 /dev/vnd0c old # cp -R old/* new # cp -R old/.disk new # umount old # vnconfig -u vnd0
Make Changes
Here are the diffs of the changes we make:
# diff -ru {old,new}/isolinux/
diff -ru old/isolinux/adtxt.cfg new/isolinux/adtxt.cfg
--- old/isolinux/adtxt.cfg Sat Aug 14 05:09:00 2021
+++ new/isolinux/adtxt.cfg Sat Aug 21 10:52:36 2021
@@ -1,9 +1,9 @@
label expert
menu label E^xpert install
kernel /install.amd/vmlinuz
- append priority=low vga=788 initrd=/install.amd/initrd.gz ---
+ append priority=low vga=normal initrd=/install.amd/initrd.gz --- console=ttyS0,1
15200n8
include rqtxt.cfg
label auto
menu label ^Automated install
kernel /install.amd/vmlinuz
- append auto=true priority=critical vga=788 initrd=/install.amd/initrd.gz --- qui
et
+ append auto=true priority=critical vga=normal initrd=/install.amd/initrd.gz ---
console=ttyS0,115200n8
diff -ru old/isolinux/isolinux.cfg new/isolinux/isolinux.cfg
--- old/isolinux/isolinux.cfg Sat Aug 14 05:09:00 2021
+++ new/isolinux/isolinux.cfg Sat Aug 21 10:51:41 2021
@@ -1,5 +1,7 @@
# D-I config version 2.0
# search path for the c32 support libraries (libcom32, libutil etc.)
+serial 0 115200
+console 0
path
include menu.cfg
default vesamenu.c32
diff -ru old/isolinux/txt.cfg new/isolinux/txt.cfg
--- old/isolinux/txt.cfg Sat Aug 14 05:09:00 2021
+++ new/isolinux/txt.cfg Sat Aug 21 10:51:56 2021
@@ -1,4 +1,4 @@
label install
menu label ^Install
kernel /install.amd/vmlinuz
- append vga=788 initrd=/install.amd/initrd.gz --- quiet
+ append vga=normal initrd=/install.amd/initrd.gz --- console=ttyS0,115200n8
Generate ISO
# pkg_add xorriso # xorriso -as mkisofs -r -J -joliet-long -l -cache-inodes -partition_offset 16 -A "Debian/VMM" -b isolinux/isolinux.bin -c boot.cat -no-emul-boot -boot-load-size 4 -boot-info-table -o debian-11.1.0-vmm.iso ./new
VMM
In /etc/vm.conf, we update the cdrom image:
vm "username" {
owner username
memory 1024M
cdrom "/home/iso/debian-11.1.0-vmm.iso"
disk /home/username/username.qcow2
interface {
locked lladdr aa:bb:cc:dd:ee:ff
switch "switch0"
}
}