config-node.toml

[node]

# Limits number of active elections before dropping will be considered (other conditions must also be satisfied)
# type:uint64,[250..]
active_elections_size = 50000

# Enable or disable local host peering
# type:bool
allow_local_peers = false

# Backup the ledger database before performing upgrades
# type:bool
backup_before_upgrade = false

# Outbound traffic limit in bytes/sec after which messages will be dropped
# type:uint64
bandwidth_limit = 5242880

# The maximum time the block processor can process blocks at a time
# type:milliseconds
block_processor_batch_max_time = 5000

# Number of outbound bootstrap connections. Must be a power of 2.
# type:uint64
bootstrap_connections = 4

# Maximum number of inbound bootstrap connections
# type:uint64
bootstrap_connections_max = 64

# Change bootstrap threshold (online stake / 256 * bootstrap_fraction_numerator)
# type:uint32
bootstrap_fraction_numerator = 1

# Maximum confirmation history size
# type:uint64
confirmation_history_size = 2048

# Enable or disable voting. Enabling voting requires additional system resources.
# type:bool
enable_voting = false

# The external address of this node (NAT). If not set, the node will request this information via UPnP.
# type:string,ip
external_address = "::"

# The external port number of this node (NAT). If not set, the node will request this information via UPnP.
# type:uint16
external_port = 0

# Number of threads dedicated to I/O opeations
# type:uint64
io_threads = 4

# Maximum open lmdb databases. Increase default if more than 100 wallets is required.
# type:uint64
lmdb_max_dbs = 128

# Number of threads dedicated to processing network messages
# type:uint64
network_threads = 4

# Online weight minimum required to confirm block
# type:string,amount,raw
online_weight_minimum = "60000000000000000000000000000000000000"

# Percentage of votes required to rollback blocks
# type:uint64
online_weight_quorum = 50

# Password fanout factor
# type:uint64
password_fanout = 1024

# Node peering port
# type:uint16
peering_port = 7075

# The amount to sleep after each batch of POW calculations. Reduces max CPU usage at the expensive of a longer.
# type:nanoseconds
pow_sleep_interval = 0

# A list of "address:port" entries to identify preconfigured peers
preconfigured_peers = ["peering.nano.org"]

# A list of representative account addresses
preconfigured_representatives = ["nano_3arg3asgtigae3xckabaaewkx3bzsh7nwz7jkmjos79ihyaxwphhm6qgjps4", "nano_1stofnrxuz3cai7ze75o174bpm7scwj9jn3nxsn8ntzg784jf1gzn1jjdkou", "nano_1q3hqecaw15cjt7thbtxu3pbzr1eihtzzpzxguoc37bj1wc5ffoh7w74gi6p", "nano_3dmtrrws3pocycmbqwawk6xs7446qxa36fcncush4s1pejk16ksbmakis78m", "nano_3hd4ezdgsp15iemx7h81in7xz5tpxi43b6b41zn3qmwiuypankocw3awes5k", "nano_1awsn43we17c1oshdru4azeqjz9wii41dy8npubm4rg11so7dx3jtqgoeahy", "nano_1anrzcuwe64rwxzcco8dkhpyxpi8kd7zsjc1oeimpc3ppca4mrjtwnqposrs", "nano_1hza3f7wiiqa7ig3jczyxj5yo86yegcmqk3criaz838j91sxcckpfhbhhra1"]

# Minimum receive amount
# type:string,amount,raw
receive_minimum = "1000000000000000000000000"

# Number of additional threads dedicated to signature verification
# type:uint64
signature_checker_threads = 3

# Maximum number of incoming TCP connections
# type:uint64
tcp_incoming_connections_max = 1024

# Timeout for TCP connect-, read- and write operations
# type:seconds
tcp_io_timeout = 15

# Number of seconds unchecked entry survives before being cleaned
# type:seconds
unchecked_cutoff_time = 14400

# If true, allocate memory from memory pools. Enabling this may improve performance. Memory is never released to the OS.
# type:bool
use_memory_pools = true

# Delay before votes are sent to allow for better bundling of hashes in votes.
# High performance nodes may need slightly higher values to optimize vote bandwidth.
# type:milliseconds
vote_generator_delay = 100

# Number of bundled hashes required for an additional generator delay
# type:uint64,[1..11]
vote_generator_threshold = 3

# Do not vote if delegated weight is under this threshold
# type:string,amount,raw
vote_minimum = "1000000000000000000000000000000000"

# A list of "address:port" entries to identify work peers
work_peers = []

# Number of threads dedicated to CPU generated work. Defaults to all available CPU threads.
# type:uint64
work_threads = 4

[node.diagnostics.txn_tracking]

# Enable or disable database transaction tracing
# type:bool
enable = false

# Ignore any block processor writes less than block_processor_batch_max_time
# type:bool
ignore_writes_below_block_processor_max_time = true

# Log stacktrace when read transactions are held longer than this duration
# type:milliseconds
min_read_txn_time = 5000

# Log stacktrace when write transactions are held longer than this duration
# type:milliseconds
min_write_txn_time = 500

[node.httpcallback]

# Callback address
# type:string,ip
address = ""

# Callback port number
# type:uint16
port = 0

# Callback target path
# type:string,uri
target = ""

[node.ipc.local]
allow_unsafe = false
enable = false
io_timeout = 15
path = "/tmp/nano"

[node.ipc.tcp]
enable = false
io_timeout = 15
port = 7077

[node.logging]

# Log bulk pull errors and messages
# type:bool
bulk_pull = false

# If enabled, immediately flush new entries to log file. This may negatively affect logging performance.
# type:bool
flush = true

# Log if insufficient work is detected
# type:bool
insufficient_work = true

# Log ledger related messages
# type:bool
ledger = false

# Log when a duplicate block is attempted inserted into the ledger
# type:bool
ledger_duplicate = false

# Log IPC related activity
# type:bool
log_ipc = true

# Log to standard error in addition to the log file
# type:bool
log_to_cerr = false

# Maximum log file size in bytes
# type:uint64
max_size = 134217728

# Minimum time that must pass for low priority entries to be logged
# type:milliseconds
min_time_between_output = 5

# Log network related messages
# type:bool
network = true

# Log keepalive related messages
# type:bool
network_keepalive = false

# Log network errors and message details
# type:bool
network_message = false

# Log node-id handshake related messages
# type:bool
network_node_id_handshake = false

# Log network packet activity
# type:bool
network_packet = false

# Log publish related network messages
# type:bool
network_publish = false

# Log TCP timeouts
# type:bool
network_timeout = false

# Log node startup and shutdown messages
# type:bool
node_lifetime_tracing = false

# Log file rotation size in character count
# type:uint64
rotation_size = 4194304

# Keep log entries on single lines
# type:bool
single_line_record = false

# Log detailed timing information for various node operations
# type:bool
timing = false

# Log UPNP discovery details. WARNING: this may include information
# about discovered devices, such as product identification. Please review before sharing logs.
# type:bool
upnp_details = false

# Vote logging. Enabling this option leads to a high volume
# of log messages which may affect node performance
# type:bool
vote = false

# Log work generation timing information
# type:bool
work_generation_time = true

[node.statistics.log]

# Log file name for counters.
# type:string
filename_counters = "counters.stat"

# Log file name for samples.
# type:string
filename_samples = "samples.stat"

# If true, write headers on each counter or samples writeout.
# The header contains log type and the current wall time.
# type:bool
headers = true

# How often to log counters. 0 disables logging.
# type:milliseconds
interval_counters = 0

# How often to log samples. 0 disables logging.
# type:milliseconds
interval_samples = 0

# Maximum number of log outputs before rotating the file.
# type:uint64
rotation_count = 100

[node.statistics.sampling]

# How many sample intervals to keep in the ring buffer.
# type:uint64
capacity = 0

# Enable or disable samling.
# type:bool
enable = false

# Sample interval.
# type:milliseconds
interval = 0

[node.websocket]

# WebSocket server bind address
# type:string,ip
address = "::1"

# Enable or disable WebSocket server
# type:bool
enable = false

# WebSocket server listening port
# type:uint16
port = 7078

[opencl]

# OpenCL device identifier
device = 0

# Enable or disable OpenCL work generation
# type:bool
enable = false

# OpenCL platform identifier
platform = 0

# OpenCL thread count
threads = 1048576

[rpc]

# Enable or disable RPC
# type:bool
enable = false

# Allow or disallow signing of hashes
# type:bool
enable_sign_hash = false

# Maximum allowed difficulty request for work generation
# type:string,hex
max_work_generate_difficulty = "ffffffffc0000000"

[rpc.child_process]

# Enable or disable RPC child process. If false, an in-process RPC server is used.
# type:bool
enable = false

# Path to the nano_rpc executable. Must be set if child process is enabled.
# type:bool
rpc_path = "/nano/nano_rpc"