Zen

Source string Source string

118/10000 · 118

The string is read only.

English Actions
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
Look for *"Good signature from"* in the output.
Once you have verified the archive, you can extract it with:
unxz fedora-coreos-$RELEASE-qemu.x86_64.qcow2.xz
To make the tutorial simpler, you should rename this image to a shorter name:
mv fedora-coreos-$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

Loading…

User avatar None

String updated in the repository

  1. fedora-docs-l10n/fedora-coreos
  2. master/pages/tutorial-updates
  3. English
curl https://fedoraproject.org/fedora.gpg | gpg --import
gpg --verify fedora-coreos-$RELEASE-qemu.x86_64.qcow2.xz.sig
curl https://fedoraproject.org/fedora.gpg | gpg --import
gpg --verify fedora-coreos-$RELEASE-qemu.x86_64.qcow2.xz.sig
a year ago
Browse all string changes

Things to check

Multiple failing checks

Following checks are failing:
Inconsistent: Portuguese (Brazil), Portuguese (Brazil)

Reset

Glossary

English English
No related strings found in the glossary.

String information

Source string description
type: delimited block -
Flags
no-wrap, placeholders:r"`[\w.\/\-_=@&*:$●+~()\] ]*`", read-only
Source string location
./pages/tutorial-updates.adoc:24
String age
a year ago
Last updated
10 months ago
Source string age
a year ago
Translation file
pot/master/pages/tutorial-updates.pot, string 8