Running a Node

Configuration for Cappuccino nodes

Cappuccino node operators are limited to a select group. If you are interested in running a node in a future release of Espresso, contact us.

This page give the configuration used to run different types of nodes in the Cappuccino testnet. For general information on running an Espresso node, see https://github.com/EspressoSystems/gitbook/blob/main/guides/running-a-sequencer-node.md.

All nodes in Cappuccino use the ghcr.io/espressosystems/espresso-sequencer/sequencer:cappuccino Docker image. Depending on the type of node, the configuration varies.

Regular Node

Command

sequencer -- http -- catchup -- status

Environment

Same for all nodes

ESPRESSO_SEQUENCER_ORCHESTRATOR_URL=https://orchestrator.cappuccino.testnet.espresso.network
ESPRESSO_SEQUENCER_CDN_ENDPOINT=cdn.cappuccino.testnet.espresso.network:1737
ESPRESSO_STATE_RELAY_SERVER_URL=https://state-relay.cappuccino.testnet.espresso.network
ESPRESSO_SEQUENCER_GENESIS_FILE=/genesis/cappuccino.toml
RUST_LOG="warn,libp2p=off"
RUST_LOG_FORMAT="json"

# At least one state peer is required. The following URL provided by Espresso works.
# Optionally, add endpoints for additional peers, separated by commas.
ESPRESSO_SEQUENCER_STATE_PEERS=https://query.cappuccino.testnet.espresso.network

Chosen by operators

# JSON-RPC endpoint for Sepolia testnet
ESPRESSO_SEQUENCER_L1_PROVIDER # e.g. https://sepolia.infura.io/v3/<API-KEY>

# Port on which to host metrics and healthchecks
ESPRESSO_SEQUENCER_API_PORT # e.g. 80

# Path in container to store consensus state
ESPRESSO_SEQUENCER_STORAGE_PATH # e.g. /mount/sequencer/store/

# Path in container to keystore
ESPRESSO_SEQUENCER_KEY_FILE # e.g. /mount/sequencer/keys/0.env

Volumes

• $ESPRESSO_SEQUENCER_STORAGE_PATH

• $ESPRESSO_SEQUENCER_KEY_FILE

DA Node

Requires operator to additionally run a Postgres server

Command

sequencer -- storage-sql -- http -- catchup -- status -- query

Environment

Same for all nodes

ESPRESSO_SEQUENCER_ORCHESTRATOR_URL=https://orchestrator.cappuccino.testnet.espresso.network
ESPRESSO_SEQUENCER_CDN_ENDPOINT=cdn.cappuccino.testnet.espresso.network:1737
ESPRESSO_STATE_RELAY_SERVER_URL=https://state-relay.cappuccino.testnet.espresso.network
ESPRESSO_SEQUENCER_GENESIS_FILE=/genesis/cappuccino.toml
ESPRESSO_SEQUENCER_POSTGRES_PRUNE="true"
ESPRESSO_SEQUENCER_PRUNER_PRUNING_THRESHOLD="549755813888" # 0.5 TB
ESPRESSO_SEQUENCER_PRUNER_MINIMUM_RETENTION="1d"
ESPRESSO_SEQUENCER_PRUNER_TARGET_RETENTION="7d"
ESPRESSO_SEQUENCER_PRUNER_BATCH_SIZE=5000
ESPRESSO_SEQUENCER_IS_DA="true"
ESPRESSO_SEQUENCER_FETCH_RATE_LIMIT=25

RUST_LOG="warn,libp2p=off"
RUST_LOG_FORMAT="json"

# At least one state peer is required. The following URL provided by Espresso works.
# Optionally, add endpoints for additional peers, separated by commas.
ESPRESSO_SEQUENCER_STATE_PEERS=https://query.cappuccino.testnet.espresso.network
ESPRESSO_SEQUENCER_API_PEERS=https://query.cappuccino.testnet.espresso.network

Chosen by operators

# JSON-RPC endpoint for Sepolia testnet
ESPRESSO_SEQUENCER_L1_PROVIDER # e.g. https://sepolia.infura.io/v3/<API-KEY>

# Port on which to host metrics, healthchecks, and DA API
ESPRESSO_SEQUENCER_API_PORT # e.g. 80

# Path in container to keystore
ESPRESSO_SEQUENCER_KEY_FILE # e.g. /mount/sequencer/keys/0.env

# Connection to Postgres
ESPRESSO_SEQUENCER_POSTGRES_HOST
ESPRESSO_SEQUENCER_POSTGRES_USER
ESPRESSO_SEQUENCER_POSTGRES_PASSWORD

Volumes

• $ESPRESSO_SEQUENCER_KEY_FILE

Archival Node

Requires operator to additionally run a Postgres server

Command

sequencer -- storage-sql -- http -- catchup -- status -- query -- state

Environment

Same for all nodes

ESPRESSO_SEQUENCER_ORCHESTRATOR_URL=https://orchestrator.cappuccino.testnet.espresso.network
ESPRESSO_SEQUENCER_CDN_ENDPOINT=cdn.cappuccino.testnet.espresso.network:1737
ESPRESSO_STATE_RELAY_SERVER_URL=https://state-relay.cappuccino.testnet.espresso.network
ESPRESSO_SEQUENCER_GENESIS_FILE=/genesis/cappuccino.toml
ESPRESSO_SEQUENCER_FETCH_RATE_LIMIT=25
RUST_LOG="warn,libp2p=off"
RUST_LOG_FORMAT="json"

# At least one state peer is required. The following URL provided by Espresso works.
# Optionally, add endpoints for additional peers, separated by commas.
ESPRESSO_SEQUENCER_STATE_PEERS=https://query.cappuccino.testnet.espresso.network
ESPRESSO_SEQUENCER_API_PEERS=https://query.cappuccino.testnet.espresso.network

Chosen by operators

# JSON-RPC endpoint for Sepolia testnet
ESPRESSO_SEQUENCER_L1_PROVIDER # e.g. https://sepolia.infura.io/v3/<API-KEY>

# Port on which to host metrics, healthchecks, and query API
ESPRESSO_SEQUENCER_API_PORT # e.g. 80

# Path in container to keystore
ESPRESSO_SEQUENCER_KEY_FILE # e.g. /mount/sequencer/keys/0.env

# Connection to Postgres
ESPRESSO_SEQUENCER_POSTGRES_HOST
ESPRESSO_SEQUENCER_POSTGRES_USER
ESPRESSO_SEQUENCER_POSTGRES_PASSWORD

Volumes

• $ESPRESSO_SEQUENCER_KEY_FILE