attestantio/vouch v1.2.0-rc2

Release 1.2.0-rc2

on GitHub

This is a feature release for Vouch. It provides support for the Altair hard fork, currently live on Pyrmont and Prater and due to go live on mainnet on 27th October.

This is a release candidate. Please pay careful attention to the information below. Because this is a pre-release, It is not recommended for production use.

Client support

This release requires a client that is fully compatible with version 2.0.0 of the Ethereum API specification.

At time of release the following support is in place:

• lighthouse: fully supported as of version 2.0.0
• teku: fully supported as of version 21.9.2
• prysm: partially supported as of version 2.0.1
  • the Prysm API does not return sync committee duties; this is currently undergoing remediation by the Prysm team (see this issue for details)
  • the Prysm API does not accept block proposals; this is currently under investigation by the Prysm team
• nimbus: partially supported as of version 1.5.1
  • the Nimbus API does not provide correct head messages; this is currently under investigation by the Nimbus team
  • the Nimbus API does not provide correct sync committee duties; this is currently under investigation by the Nimbus team

Please read the release notes of the beacon node(s) you will use with Vouch, particularly information on their REST API, to ensure that the node is suitably configured.

It is not expected that remediation of the above issues will require changes to Vouch, however it remains a possibility until the issues are fully resolved.

Note for Prysm users

Vouch no longer uses Prysm's GRPC interface, instead using the standard REST API. Please ensure that the REST API is available using the --grpc-gateway-port and --grpc-gateway-host Prysm configuration flags.

Changes in this release

• decrypt local accounts in parallel to reduce startup time
• add 'advanced' scheduler, designed to be more robust with higher parallel job load
• fetch wallet accounts from Dirk in parallel
• fetch process-concurrency configuration value from most specific point in hierarchy
• add metrics to track strategy operation results
• support Altair:
  • support updated go-eth2-client for versioned data
  • manage sync committee operations:
    • generate sync committee messages
    • act as sync committee aggregator as required
• add metrics to track strategy operation results
• provide release metric in vouch_release
• provide ready metric in vouch_ready
• handle chain reorganisations, updating duties as appropriate
• add controller.max_attestation_delay option
• introduce aggregate attestation strategy, allowing selection of best or first aggregate attestation from a set
• add 'epoch_slot' label to 'vouch_block_receipt_delay_seconds' metric