Running operator with DVT

The page will guide you through setting up vault with DVT cluster.

Prerequisites

Vault should be created in Stakewise web UI.

Please refrain from manually activating validators through the Staking Launchpad or Etherscan as instructed on Obol/SSV sites. These instructions do not pertain to the Operator setup. Validators will be activated by the Operator once there are sufficient assets in the vault balance.

Step 1. Generate validator key shares

There are 2 ways to create validator keys:

  • create keys alone

  • create keys with a group using Distributed Key Generation (DKG) ceremony

Creating keys alone may be an option if you don't collaborate with anybody. In this case DVT may be used for additional robustness. When using SSV you can fully delegate validator duties to other entities (SSV operators) and do not mind running validators on your own. See Obol page and SSV page for further instructions if you are creating keys alone.

DKG is more secure and decentralized way because nobody has full control over validator keys. The document below is dedicated to DKG way.

Generate validator keys with a group using DKG ceremony. See Obol DKG guide.

Step 2. Set up DVT cluster

During cluster setup keep in mind:

  • withdrawal_address should equal to vault address

  • validator fee recipient should equal to address specified in vault details section on the vault page.

Each DVT operator should run Charon instance. Charon is HTTP middleware built by Obol to enable any existing Ethereum validator clients to operate together as part of a distributed validator. Guide from step 1 includes setting up Charon.

Step 3. Set up DVT sidecars

Run DVT sidecar instance for each DVT node in a cluster. Each DVT operator should run his own sidecar instance.

Instructions how to run single sidecar for a given DVT operator is below.

DVT sidecar should have access to Obol node directory generated on step 1. Node directory contains cluster lock file and validator keys. In example below ~/node0 is used as node directory.

For Obol there is an option to store validator keys in Remote signer. In this case you should upload validator keys into Remote signer. After that you can move validator keys away from Obol node directory.

Fill .env file with environment variables.

Env example for Obol
# Network choices: mainnet,hoodi
NETWORK=mainnet

# LOG_LEVEL=INFO
# LOG_FORMAT=plain

# SENTRY_DSN=
# SENTRY_ENVIRONMENT=

# Relayer API params
# If you would like to use custom relayer, specify it here
# By default RELAYER_ENDPOINT=https://mainnet-dvt-relayer.stakewise.io
# RELAYER_ENDPOINT=https://mainnet-dvt-relayer.stakewise.io
RELAYER_TIMEOUT=10

# Interval for polling DVT Relayer
POLL_INTERVAL=1

# Cluster type. Choices: OBOL, SSV
CLUSTER_TYPE=OBOL

# Path to Obol keystores directory.
# Not used if REMOTE_SIGNER_URL param is set.
OBOL_KEYSTORES_DIR=/node/validator_keys

# Obol cluster lock file path
OBOL_CLUSTER_LOCK_FILE=/node/cluster-lock.json

# Obol node index
# The node index is the node position number in the cluster.
# The order is defined during the cluster creation
OBOL_NODE_INDEX=0

# NB! If you are using the remote signer,
# uncomment and provide values for the parameters below
# REMOTE_SIGNER_URL=http://localhost:9000
# REMOTE_SIGNER_TIMEOUT=10
Env example for SSV
# Network choices: mainnet,hoodi
NETWORK=mainnet

# LOG_LEVEL=INFO
# LOG_FORMAT=plain

# SENTRY_DSN=
# SENTRY_ENVIRONMENT=

# Relayer API params
# RELAYER_ENDPOINT=https://mainnet-dvt-relayer.stakewise.io
RELAYER_TIMEOUT=10

# Interval for polling DVT Relayer
POLL_INTERVAL=1

# Cluster type. Choices: OBOL, SSV
CLUSTER_TYPE=SSV

# SSV operator key
# Path to key file
SSV_OPERATOR_KEY_FILE=/data/encrypted_private_key.json
# Path to password file
SSV_OPERATOR_PASSWORD_FILE=/data/password.txt

# SSV operator id (node id)
SSV_OPERATOR_ID=123

# SSV keyshares file path
SSV_KEYSHARES_FILE=/data/keyshares.json

Run sidecar:

docker run \
-u $(id -u):$(id -g) \
--env-file .env \
-v $(pwd)/.charon:/node \
europe-west4-docker.pkg.dev/stakewiselabs/public/dvt-operator-sidecar:v0.4.4

Step 4. Set up Stakewise Operator

Single operator instance should be set up for DVT cluster.

Step 4.0 Prerequisites

Ensure prerequisites are satisfied. This includes setting up execution client and consensus client.

Step 4.1 Generate mnemonic

Run init command. The command creates mnemonic and creates folders structure. Mnemonic will not be used to generate validator keys because validator keys are already created by DVT tools (step 1). Mnemonic may be used for creating wallet (see below).

Step 4.2 Create hot wallet

Run the create-wallet command to create your hot wallet using your mnemonic (note, this mnemonic can be the one generated on step 4.1, or a new mnemonic if you desire).

Note, you must send some ETH (or xDAI for Gnosis) to the wallet for gas expenses

Step 4.3 Upload deposit data file to Vault

DKG ceremony produces deposit data file in addition to keystores. See instructions for uploading this file to Vault.

Step 4.4 Run Stakewise Operator

See instructions.

There are some changes for DVT case:

  • Run operator with start-api command, unlike start command in default scenario.

  • Pass --relayer-type=DVT --relayer-endpoint=https://mainnet-dvt-relayer.stakewise.io/ in start-api options

  • Pass --deposit-data-path to provide deposit data file generated during DKG

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