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forgejo-docs/docs/developer/RELEASE.md
Earl Warren 301f4b65f5
developer: release: renewal of the release key
2023-12-15 18:53:20 +01:00

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title license
Release management CC-BY-SA-4.0

Release numbering

The Forgejo release numbers are composed of the Gitea release number followed by a dash and a serial number. For instance:

  • Gitea v1.21.0 will be Forgejo v1.21.0-0, v1.21.0-1, etc

The Gitea release candidates are suffixed with -rcN which is handled as a special case for packaging: although X.Y.Z is lexicographically lower than X.Y.Z-rc1 is is considered greater. The Forgejo serial number must therefore be inserted before the -rcN suffix to preserve the expected version ordering.

  • Gitea v1.21.0-rc0 will be Forgejo v1.21.0-0-rc0, v1.21.0-1-rc0
  • Gitea v1.21.0-rc1 will be Forgejo v1.21.0-2-rc1, v1.21.0-3-rc1, v1.21.0-4-rc1
  • Gitea v1.21.0 will be Forgejo v1.21.0-5, v1.21.0-6, v1.21.0-7
  • etc.

Because Forgejo depends on Gitea, it must retain the same release numbering scheme to be compatible with libraries and tools that depend on it. For instance, the tea CLI or the Gitea SDK will behave differently depending on the server version they connect to. If Forgejo had a different numbering scheme, it would no longer be compatible with the Gitea ecosystem.

From a Semantic Versioning standpoint, all Forgejo releases are pre-releases because they are suffixed with a dash. They are syntactically correct but do not comply with the Semantic Versioning recommendations. Gitea is not compliant either and Forgejo inherits this problem.

Stable release process

The TL;DR: to publish a vX.Y.Z-N release is to:

Semantic version

  • Update the FORGEJO_VERSION variable in the Makefile

Create a milestone and a check list

  • Create a Forgejo vX.X.Z-N milestone set to the date of the release
  • Create an issue named [RELEASE] Forgejo vX.Y.Z-N with a description that includes a list of what needs to be done for the release with links to follow the progress
  • Set the milestone of this issue to Forgejo vX.X.Z-N
  • Close the milestone when the release is complete

Cherry pick the latest commits from Gitea

The vX.Y/forgejo branch is populated as part of the rebase on top of Gitea. The release happens in between rebase and it is worth checking if the matching Gitea branch, release/vX.Y contains commits that should be included in the release.

  • cherry-pick -x the commits
  • push the vX.Y/forgejo branch including the commits
  • verify that the tests pass

Release Notes

  • Add an entry in RELEASE-NOTES.md

The dependencies where user visible changes should be harvested when they are upgraded are:

Forgejo release building and testing

When Forgejo is released, artefacts (packages, binaries, etc.) are first published by the CI/CD pipelines in the https://codeberg.org/forgejo-experimental organization, to be downloaded and verified to work.

It will trigger a build workflow that:

If the build fails, the logs of the workflow can be found in https://codeberg.org/forgejo-integration/forgejo/actions for debugging. Once the build is successful, it must be copied to https://codeberg.org/forgejo-experimental.

It will trigger a publish workflow that:

To verify the container images, the end-to-end integration tests can be used. Push a branch with the location of the release under test to run a collection of test workflows.

Reach out to packagers and users to manually verify the release works as expected.

Forgejo release publication

It will trigger a workflow to:

Forgejo runner publication

The release is built on https://code.forgejo.org/forgejo-integration/runner, which is a mirror of https://code.forgejo.org/forgejo/runner.

The release is published on https://forgejo.octopuce.forgejo.org/forgejo/runner, which is a mirror of https://code.forgejo.org/forgejo-integration/runner. It is behind a VPN and its role is to copy and sign release artifacts.

If publishing the release needs debug, it can be done manually:

It can also be done from the CLI with forgejo-runner exec and providing the secrets from the command line.

Securing the release token and cryptographic keys

For both the Forgejo runner and Forgejo itself, copying and signing the release artifacts (container images and binaries) happen on a Forgejo isntance running behind a VPN to safeguard the token that has write access to the Forgejo repository as well as the cryptographic key used to sign the releases.

Website update

DNS update

  • Update the release.forgejo.org TXT record that starts with forgejo_versions= to be forgejo_versions=vX.Y.Z-N

Standard toot

The following toot can be re-used to announce a minor release at https://floss.social/@forgejo. For more significant releases it is best to consider a dedicated and non-standard toot.

#Forgejo vX.Y.Z-N was just released! This is a minor patch. Check out the release notes and download it at https://forgejo.org/releases/. If you experience any issues with this release, please report to https://codeberg.org/forgejo/forgejo/issues.

Experimental release process

An experimental release is published every time an update of the Forgejo dependencies is completed. This release is named after the next stable release, with the -test suffix. For instance v1.22.0-test.

When the stable release is in its final stages, it is replaced by the release candidates, which changes the suffix to be -X-rcN. For instance v1.22.0-2-rc1.

Release signing keys management

A GPG master key with no expiration date is created and shared with members of the Owners team via encrypted email. A subkey with a one year expiration date is created and stored in the secrets repository (openpgp/20??-release-team.gpg), to be used by the release pipeline. The public master key is stored in the secrets repository and published where relevant (keys.openpgp.org for instance).

Master key creation

  • gpg --expert --full-generate-key
  • key type: ECC and ECC option with Curve 25519 as curve
  • no expiration
  • id: Forgejo Releases contact@forgejo.org
  • gpg --export-secret-keys --armor EB114F5E6C0DC2BCDD183550A4B61A2DC5923710 and send via encrypted email to Owners
  • gpg --export --armor EB114F5E6C0DC2BCDD183550A4B61A2DC5923710 > release-team.gpg.pub
  • gpg --keyserver keys.openpgp.org --send-keys EB114F5E6C0DC2BCDD183550A4B61A2DC5923710
  • commit to the secrets repository

Subkey creation and renewal

  • gpg --expert --edit-key EB114F5E6C0DC2BCDD183550A4B61A2DC5923710
  • addkey
  • key type: ECC (signature only)
  • elliptic curve Curve 25519
  • key validity: 18 months
  • update https://codeberg.org/forgejo/forgejo/issues/58 to schedule the renewal 12 months later
  • gpg --export --armor EB114F5E6C0DC2BCDD183550A4B61A2DC5923710 > openpgp/release-team.gpg.pub
  • commit to the secrets repository
  • gpg --keyserver keys.openpgp.org --send-keys EB114F5E6C0DC2BCDD183550A4B61A2DC5923710

Local sanity check

From the root of the secrets directory, assuming the master key for EB114F5E6C0DC2BCDD183550A4B61A2DC5923710 is already imported in the keyring.

There are a lot of contradictory information regarding the management of subkeys, with zillions ways of doing something that looks like it could work but creates situations that are close to impossible to figure out. Experimenting with the CLI, reading the gpg man page and using common sense is the best way to understand how it works. Reading the documentation or discussions on the net is highly confusing because it is loaded with 20 years of history, most of which is no longer relevant.

Here are a few notions that help understand how it works:

  • gpg --export-secret-subkeys --armor B3B1F60AC577F2A2! exports the secret key for the subkey B3B1F60AC577F2A2, the exclamation mark meaning "nothing else".
  • a keygrip is something that each private key has and that can be displayed with gpg --with-keygrip --list-key. It matters because each private key is associated with exactly one file in the private-keys-v1.d directory which is named after this keygrip. It is the best way to verify an unrelated private key was not accidentally included in the export of the subkey.
  • when a subkey is created, the public key for the master key must be published again because it includes the public key of this new subkey.
  • all the instructions that are published to instruct people to verify the signature of a release use the fingerprint of the master key. It will work although the release really is signed by the subkey and not the master key. This is the main benefit of using subkeys as it hides the rotation of the subkeys and does not require updating instructions everywhere every year.
  • whenever gpg starts working with a new directory, it will launch a gpg-agent daemon that will persist. If this directory is removed manually or modified it will confuse the daemon and the gpg command will misbehave in ways that can be very difficult to understand. When experimenting create a new directory but do not modify the files manually, even though some instructions on the net recommend doing so, for instance to remove a private key.
NEWKEY=????
#
# brand new GNUPGHOME, situation similar to the release pipeline
#
export GNUPGHOME=/tmp/tmpgpg1 ; mkdir $GNUPGHOME ; chmod 700 $GNUPGHOME
gpg --import openpgp/$(date +%Y --date='next year')-release-team.gpg
find $GNUPGHOME/private-keys-v1.d # only has **one** file named after the keygrip
# sign something
echo bar > /tmp/foo
gpg --detach-sig --output /tmp/foo.asc --default-key $NEWKEY --sign /tmp/foo
#
# brand new GNUPGHOME: situation similar to someone verifying the release signature is good
#
export GNUPGHOME=/tmp/tmpgpg1 ; mkdir $GNUPGHOME ; chmod 700 $GNUPGHOME
gpg --import release-team.gpg.pub
gpg --verify /tmp/foo.asc /tmp/foo

2024

  • gpg --export-secret-subkeys --armor B3B1F60AC577F2A2! > openpgp/2024-release-team.gpg
  • commit to the secrets repository

Users, organizations and repositories

Shared user: release-team

The release-team user publishes and signs all releases. The associated email is mailto:release@forgejo.org.

The public GPG key used to sign the releases is EB114F5E6C0DC2BCDD183550A4B61A2DC5923710 Forgejo Releases <release@forgejo.org>

Shared user: forgejo-ci

The forgejo-ci user is dedicated to https://forgejo-ci.codeberg.org/ and provides it with OAuth2 credentials it uses to run.

Shared user: forgejo-experimental-ci

The forgejo-experimental-ci user is dedicated to provide the application tokens used by the CI to build releases and publish them to https://codeberg.org/forgejo-experimental. It does not (and must not) have permission to publish releases at https://codeberg.org/forgejo.

Integration and experimental organization

The https://codeberg.org/forgejo-integration organization is dedicated to integration testing. Its purpose is to ensure all artefacts can effectively be published and retrieved by the CI/CD pipelines.

The https://codeberg.org/forgejo-experimental organization is dedicated to publishing experimental Forgejo releases. They are copied from the https://codeberg.org/forgejo-integration organization.

The forgejo-experimental-ci user as well as all Forgejo contributors working on the CI/CD pipeline should be owners of both organizations.