# To configure the service, use `systemctl edit nimbus_beacon_node.service`
# and override the environment variables in this file:
# [Service]
# Environment="WEB3_URL=wss://provider/"
#
# To completely override the start command (to add custom parameters such as
# graffiti), override the `ExecStart` value instead by first emptying it, then
# specifying a new one:
#
# [Service]
# ExecStart=
# ExecStart=/usr/bin/nimbus_beacon_node --network=${NETWORK} \
#  --data-dir="${DATA_DIR_PREFIX}/shared_${NETWORK}_${NODE_ID}" \
#  --graffiti=123
#
# See https://nimbus.guide/ for more information

[Unit]
Description=Nimbus Beacon Node (Ethereum consensus client)
Wants=network-online.target
After=network-online.target

[Install]
WantedBy=multi-user.target

[Service]
# Network - use `prater` to connect to the prater testnet
Environment=NETWORK=mainnet

# You need to have have access to an execution client - by default, we assume
# a compatible execution client is running on the same machine on the default
# websocket port. Make sure to supply the right path to the JWT secret.

Environment=WEB3_URL=http://127.0.0.1:8551
Environment=JWT_SECRET=/tmp/jwtsecret

# Where to store chain data
Environment=DATA_DIR_PREFIX=/var/lib/nimbus

# Default ports - if you want to run multiple instances of nimbus, for example
# to run both prater and mainnet, separate ports must be used
Environment=TCP_PORT=9000
Environment=UDP_PORT=9000
Environment=REST_PORT=5052
Environment=METRICS_PORT=8008

# Interaction and monitoring
Environment=REST_ENABLED=Yes
Environment=METRICS_ENABLED=Yes

# Apart from sockets and databases, a file descriptor is needed for every local validator
LimitNOFILE=16384

# Default group = nimbus
User=nimbus
WorkingDirectory=/var/lib/nimbus
TimeoutSec=1200
Restart=always

# Don't restart when Doppelganger detection has been activated
RestartPreventExitStatus=129

ExecStart=/usr/bin/nimbus_beacon_node \
  --network=${NETWORK} \
  --data-dir="${DATA_DIR_PREFIX}/shared_${NETWORK}_0" \
  --tcp-port=${TCP_PORT} \
  --udp-port=${UDP_PORT} \
  --rest=${REST_ENABLED} --rest-port=${REST_PORT} \
  --metrics=${METRICS_ENABLED} --metrics-port=${METRICS_PORT} \
  --web3-url=${WEB3_URL} \
  --jwt-secret=${JWT_SECRET}