2022-10-18 17:20:26 +00:00
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# Autoinstall Quick Start for s390x
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The intent of this page is to provide simple instructions to perform an autoinstall in a VM on your machine on s390x.
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2022-10-19 12:26:25 +00:00
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This page is just a slightly adapted page of [the autoinstall quickstart page](/t/draft-automated-server-install-quickstart/16614) mapped to s390x.
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2022-10-18 17:20:26 +00:00
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## Download an ISO
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At the time of writing (just before focal release), the best place to go is here:
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2022-10-19 12:26:25 +00:00
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<http://cdimage.ubuntu.com/ubuntu/releases/20.04/release/>
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2022-10-18 17:20:26 +00:00
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<pre><code>wget http://cdimage.ubuntu.com/ubuntu/releases/20.04/release/ubuntu-20.04-live-server-s390x.iso -P ~/Downloads</code></pre>
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## Mount the ISO
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<pre><code>mkdir -p ~/iso
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sudo mount -r ~/Downloads/ubuntu-20.04-live-server-s390x.iso ~/iso</code></pre>
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## Write your autoinstall config
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This means creating cloud-init config as follows:
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<pre><code>mkdir -p ~/www
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cd ~/www
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cat > user-data << 'EOF'
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#cloud-config
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autoinstall:
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version: 1
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identity:
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hostname: ubuntu-server
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password: "$6$exDY1mhS4KUYCE/2$zmn9ToZwTKLhCw.b4/b.ZRTIZM30JZ4QrOQ2aOXJ8yk96xpcCof0kxKwuX1kqLG/ygbJ1f8wxED22bTL4F46P0"
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username: ubuntu
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EOF
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touch meta-data</code></pre>
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The crypted password is just "ubuntu".
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## Serve the cloud-init config over http
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Leave this running in one terminal window:
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<pre><code>cd ~/www
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python3 -m http.server 3003</code></pre>
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## Create a target disk
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Proceed with a second terminal window:
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<pre><code>sudo apt install qemu-utils
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...</code></pre>
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<pre><code>qemu-img create -f qcow2 disk-image.qcow2 10G
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Formatting 'disk-image.qcow2', fmt=qcow2 size=10737418240 cluster_size=65536 lazy_refcounts=off refcount_bits=16
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qemu-img info disk-image.qcow2
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image: disk-image.qcow2
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file format: qcow2
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virtual size: 10 GiB (10737418240 bytes)
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disk size: 196 KiB
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cluster_size: 65536
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Format specific information:
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compat: 1.1
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lazy refcounts: false
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refcount bits: 16
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corrupt: false</code></pre>
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## Run the install!
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<pre><code>sudo apt install qemu-kvm
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...</code></pre>
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You may need to add the default user to the kvm group: <<BR>>
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`sudo usermod -a -G kvm ubuntu # re-login to make the changes take effect`
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<pre><code>kvm -no-reboot -name auto-inst-test -nographic -m 2048 \
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-drive file=disk-image.qcow2,format=qcow2,cache=none,if=virtio \
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-cdrom ~/Downloads/ubuntu-20.04-live-server-s390x.iso \
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-kernel ~/iso/boot/kernel.ubuntu \
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-initrd ~/iso/boot/initrd.ubuntu \
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-append 'autoinstall ds=nocloud-net;s=http://_gateway:3003/ console=ttysclp0'</code></pre>
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This will boot, download the config from the server set up in the previous step and run the install.
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The installer reboots at the end but the -no-reboot flag to kvm means that kvm will exit when this happens.
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It should take about 5 minutes.
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## Boot the installed system
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<pre><code>kvm -no-reboot -name auto-inst-test -nographic -m 2048 \
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-drive file=disk-image.qcow2,format=qcow2,cache=none,if=virtio</code></pre>
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This will boot into the freshly installed system and you should be able to log in as ubuntu/ubuntu.
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