lighthouse/scripts/local_testnet/validator_client.sh
realbigsean c5786a8821 Doppelganger detection (#2230)
## Issue Addressed

Resolves #2069 

## Proposed Changes

- Adds a `--doppelganger-detection` flag
- Adds a `lighthouse/seen_validators` endpoint, which will make it so the lighthouse VC is not interopable with other client beacon nodes if the `--doppelganger-detection` flag is used, but hopefully this will become standardized. Relevant Eth2 API repo issue: https://github.com/ethereum/eth2.0-APIs/issues/64
- If the `--doppelganger-detection` flag is used, the VC will wait until the beacon node is synced, and then wait an additional 2 epochs. The reason for this is to make sure the beacon node is able to subscribe to the subnets our validators should be attesting on. I think an alternative would be to have the beacon node subscribe to all subnets for 2+ epochs on startup by default.

## Additional Info

I'd like to add tests and would appreciate feedback. 

TODO:  handle validators started via the API, potentially make this default behavior

Co-authored-by: realbigsean <seananderson33@gmail.com>
Co-authored-by: Michael Sproul <michael@sigmaprime.io>
Co-authored-by: Paul Hauner <paul@paulhauner.com>
2021-07-31 03:50:52 +00:00

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#!/usr/bin/env bash
#
# Starts a validator client based upon a genesis state created by
# `./setup.sh`.
#
# Usage: ./validator_client.sh <DATADIR> <BEACON-NODE-HTTP> <OPTIONAL-DEBUG-LEVEL>
source ./vars.env
DEBUG_LEVEL=${3:-info}
exec lighthouse \
--debug-level $DEBUG_LEVEL \
vc \
--datadir $1 \
--testnet-dir $TESTNET_DIR \
--init-slashing-protection \
--beacon-nodes $2 \
$VC_ARGS