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RELEASE.md

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Releasing a new version of mev-boost

This is a guide on how to release a new version of mev-boost:

  1. Best days to release a new version are Monday to Wednesday. Never release on a Friday.
  2. Release only with another person present (four eyes principle)
  3. Double-check the current build
  4. Prepare a release candidate (RC)
  5. Test the RC on testnets with the help of node operators
  6. Collect code signoffs
  7. Release

Double-check the current status

First of all, check that the git repository is in the final state, and all the tests and checks are running fine

Test the current

make lint
make test-race
go mod tidy
git status # should be no changes

# Start mev-boost with relay check and -relays
go run . -mainnet -relay-check -min-bid 0.12345 -debug -relays https://0xac6e77dfe25ecd6110b8e780608cce0dab71fdd5ebea22a16c0205200f2f8e2e3ad3b71d3499c54ad14d6c21b41a37ae@boost-relay.flashbots.net,https://0x8b5d2e73e2a3a55c6c87b8b6eb92e0149a125c852751db1422fa951e42a09b82c142c3ea98d0d9930b056a3bc9896b8f@bloxroute.max-profit.blxrbdn.com,https://0xb3ee7afcf27f1f1259ac1787876318c6584ee353097a50ed84f51a1f21a323b3736f271a895c7ce918c038e4265918be@relay.edennetwork.io,https://0x9000009807ed12c1f08bf4e81c6da3ba8e3fc3d953898ce0102433094e5f22f21102ec057841fcb81978ed1ea0fa8246@builder-relay-mainnet.blocknative.com,https://0xa1559ace749633b997cb3fdacffb890aeebdb0f5a3b6aaa7eeeaf1a38af0a8fe88b9e4b1f61f236d2e64d95733327a62@relay.ultrasound.money -relay-monitors https://relay-monitor1.example.com,https://relay-monitor2.example.com

# Start mev-boost with relay check and multiple -relay flags
go run . -mainnet -relay-check -debug -min-bid 0.12345 \
    -relay https://0xac6e77dfe25ecd6110b8e780608cce0dab71fdd5ebea22a16c0205200f2f8e2e3ad3b71d3499c54ad14d6c21b41a37ae@boost-relay.flashbots.net \
    -relay https://0x8b5d2e73e2a3a55c6c87b8b6eb92e0149a125c852751db1422fa951e42a09b82c142c3ea98d0d9930b056a3bc9896b8f@bloxroute.max-profit.blxrbdn.com \
    -relay https://0xb3ee7afcf27f1f1259ac1787876318c6584ee353097a50ed84f51a1f21a323b3736f271a895c7ce918c038e4265918be@relay.edennetwork.io \
    -relay https://0x9000009807ed12c1f08bf4e81c6da3ba8e3fc3d953898ce0102433094e5f22f21102ec057841fcb81978ed1ea0fa8246@builder-relay-mainnet.blocknative.com \
    -relay https://0xa1559ace749633b997cb3fdacffb890aeebdb0f5a3b6aaa7eeeaf1a38af0a8fe88b9e4b1f61f236d2e64d95733327a62@relay.ultrasound.money \
    -relay-monitor https://relay-monitor1.example.com \
    -relay-monitor https://relay-monitor2.example.com

# Call the status endpoint
curl localhost:18550/eth/v1/builder/status

Prepare a release candidate build and Docker image

For example, creating a new release v1.9:

  1. Create a Github issue about the upcoming release (example)
  2. Create a release branch (release/v1.9)
  3. Create an alpha release: v1.9-alpha1
  4. Test in testnets, iterate as needed, create more alpha versions
  5. When tests are complete, create the final release
# create a new branch
git checkout -b release/v1.9

# set and commit the correct version as described below, and create a signed tag
vim config/vars.go
git commit -am "v1.9-alpha1"
git tag -s v1.9-alpha1  # without a tag, the Docker image would include the wrong version number

# now push to Github (CI will build the Docker image: https://github.com/flashbots/mev-boost/actions)
git push origin --tags

# other parties can now test the release candidate from Docker like this:
docker pull flashbots/mev-boost:v1.9a1

Ask node operators to test this RC (on Goerli or Sepolia)

  • Reach out to node operators to help test this release
  • Collect their sign-off for the release

Collect code signoffs

  • Reach out to the parties that have reviewed the PRs and ask for a sign-off on the release
  • For possible reviewers, take a look at recent contributors

Release only with 4 eyes

  • Always have two people preparing and publishing the final release

Tagging a version and pushing the release

To create a new version (with tag), follow all these steps! They are necessary to have the correct build version inside, and work with go install.

  • Update Version to final version to v1.9, and commit
  • Create final tags, both semver and pep440:
    • git tag -s v1.9
    • git tag -s v1.9.0
  • Update the stable branch:
    • git checkout stable
    • git merge tags/v1.9 --ff-only
    • git checkout develop
    • git merge tags/v1.9 --ff-only
  • Update Version in config/vars.go to next patch with dev suffix (eg. v1.10-dev) and commit to develop
  • Now push the develop and stable branches, as well as the tag: git push origin develop stable --tags

Now check the Github CI actions for release activity: https://github.com/flashbots/mev-boost/actions

  • CI builds and pushes the Docker image, and prepares a new draft release in https://github.com/flashbots/mev-boost/releases
  • Open it and prepare the release:
    • generate the description
    • review
    • add signoffs and testing
    • add usage (mev-boost -help)
    • publish