fedora-docs-l10n/fedora-coreos/master/pages/tutorial-updates — French @ Fedora Weblate: unxz fedora-coreos-$RELEASE-qemu.x86

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	Testing Fedora CoreOS updates
	Make sure that you have completed the steps described in the xref:tutorial-setup.adoc[initial setup page] before starting this tutorial.
	In this tutorial, we will not focus on provisioning but on what happens during updates and the options that are available in case of failures.
	Downloading an older Fedora CoreOS release
	One of the defining features of Fedora CoreOS is automatic updates. To see them in action, we have to download an older Fedora CoreOS release. In this case we'll boot the `N-1` release of Fedora CoreOS, which can be seen from the https://fedoraproject.org/coreos/release-notes/[Fedora CoreOS release page] or by using the `releases.json` metadata:
	RELEASE=$(curl https://builds.coreos.fedoraproject.org/prod/streams/stable/releases.json \| jq -r '.releases[-2].version') curl -O https://builds.coreos.fedoraproject.org/prod/streams/stable/builds/$RELEASE/x86_64/fedora-coreos-$RELEASE-qemu.x86_64.qcow2.xz curl -O https://builds.coreos.fedoraproject.org/prod/streams/stable/builds/$RELEASE/x86_64/fedora-coreos-$RELEASE-qemu.x86_64.qcow2.xz.sig
	Once the archive has been downloaded, make sure to verify its integrity:
	curl https://fedoraproject.org/fedora.gpg \| gpg --import gpg --verify fedora-coreos-$RELEASE-qemu.x86_64.qcow2.xz.sig	curl https://getfedora.org/static/fedora.gpg \| gpg --import gpg --verify fedora-coreos-$RELEASE-qemu.x86_64.qcow2.xz.sig
	Look for "Good signature from" in the output.
	Once you have verified the archive, you can extract it with:
	unxz fedora-coreos-$RELEASE-qemu.x86_64.qcow2.xz	unxz fedora-coreos-$RELEASE-qemu.x86_64.qcow2.xz
	To make the tutorial simpler, you should rename this image to a shorter name:
	mv fedora-coreos-$RELEASE-qemu.x86_64.qcow2 fedora-coreos-older.qcow2
	Writing the Butane config and converting to Ignition
	We will create a Butane config that will:
	Set up console autologin.
	Add an SSH Key for the `core` user from the local `ssh-key.pub` file.
	Let's write this Butane config to a file called `updates.bu`:
	variant: fcos version: {butane-latest-stable-spec} passwd: users: - name: core ssh_authorized_keys_local: - ssh-key.pub systemd: units: - name: serial-getty@ttyS0.service dropins: - name: autologin-core.conf contents: \| [Service] # Override Execstart in main unit ExecStart= # Add new Execstart with `-` prefix to ignore failure ExecStart=-/usr/sbin/agetty --autologin core --noclear %I $TERM TTYVTDisallocate=no storage: files: - path: /etc/profile.d/systemd-pager.sh mode: 0644 contents: inline: \| # Tell systemd to not use a pager when printing information export SYSTEMD_PAGER=cat
	Optionally you can replace the SSH pubkey in the yaml file with your own public key so you can log in to the booted instance. If you choose not to do this you'll still be auto logged in to the serial console.
	Run Butane to convert that to an Ignition config:
	butane --pretty --strict --files-dir=./ updates.bu --output updates.ign
	Startup and initial update
	Now let's provision it. Make sure that you are starting from the older Fedora CoreOS image in this step:
	# Setup the correct SELinux label to allow access to the config chcon --verbose --type svirt_home_t updates.ign
	# Start a Fedora CoreOS virtual machine virt-install --name=fcos --vcpus=2 --ram=2048 --os-variant=fedora-coreos-stable \ --import --network=bridge=virbr0 --graphics=none \ --qemu-commandline="-fw_cfg name=opt/com.coreos/config,file=${PWD}/updates.ign" \ --disk=size=20,backing_store=${PWD}/fedora-coreos-older.qcow2

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