Important:
This documentation has been moved and is now being maintained as part of the Ubuntu Installer documentation. For the up-to-date version of this content, please refer to this version instead.
The intent of this page is to provide simple instructions to perform an autoinstall in a VM on your machine on s390x.
This page is just a slightly adapted page of the autoinstall quickstart page mapped to s390x.
Download an ISO
At the time of writing (just after the kinetic release), the best place to go is here:
https://cdimage.ubuntu.com/ubuntu/releases/22.10/release/
wget https://cdimage.ubuntu.com/ubuntu/releases/22.10/release/ubuntu-22.10-live-server-s390x.iso -P ~/Downloads
Mount the ISO
mkdir -p ~/iso
sudo mount -r ~/Downloads/ubuntu-22.10-live-server-s390x.iso ~/iso
Write your autoinstall config
This means creating a cloud-init #cloud-config file as follows:
mkdir -p ~/www
cd ~/www
cat > user-data << 'EOF'
#cloud-config
autoinstall:
version: 1
identity:
hostname: ubuntu-server
password: "$6$exDY1mhS4KUYCE/2$zmn9ToZwTKLhCw.b4/b.ZRTIZM30JZ4QrOQ2aOXJ8yk96xpcCof0kxKwuX1kqLG/ygbJ1f8wxED22bTL4F46P0"
username: ubuntu
EOF
touch meta-data
The crypted password is just “ubuntu”.
Serve the cloud-init config over HTTP
Leave this running in a new terminal window:
cd ~/www
python3 -m http.server 3003
Create a target disk
Proceed with a second terminal window:
sudo apt install qemu-utils
qemu-img create -f qcow2 disk-image.qcow2 10G
Formatting 'disk-image.qcow2', fmt=qcow2 size=10737418240 cluster_size=65536 lazy_refcounts=off refcount_bits=16
qemu-img info disk-image.qcow2
image: disk-image.qcow2
file format: qcow2
virtual size: 10 GiB (10737418240 bytes)
disk size: 196 KiB
cluster_size: 65536
Format specific information:
compat: 1.1
lazy refcounts: false
refcount bits: 16
corrupt: false
Run the install!
sudo apt install qemu-kvm
You may need to add the default user to the kvm group:
sudo usermod -a -G kvm ubuntu
Note:
You will need to re-login to make the changes take effect.
kvm -no-reboot -name auto-inst-test -nographic -m 2048 \
-drive file=disk-image.qcow2,format=qcow2,cache=none,if=virtio \
-cdrom ~/Downloads/ubuntu-22.10-live-server-s390x.iso \
-kernel ~/iso/boot/kernel.ubuntu \
-initrd ~/iso/boot/initrd.ubuntu \
-append 'autoinstall ds=nocloud-net;s=http://_gateway:3003/ console=ttysclp0'
This will boot, download the config from the server set up in the previous step and run the install. The installer reboots at the end but the -no-reboot flag to kvm means that kvm will exit when this happens. It should take about 5 minutes.
Boot the installed system
kvm -no-reboot -name auto-inst-test -nographic -m 2048 \
-drive file=disk-image.qcow2,format=qcow2,cache=none,if=virtio
This will boot into the freshly installed system and you should be able to log in as ubuntu/ubuntu.