# Configuration Tendermint Core can be configured via a TOML file in `$TMHOME/config/config.toml`. Some of these parameters can be overridden by command-line flags. For most users, the options in the `##### main base configuration options #####` are intended to be modified while config options further below are intended for advance power users. ## Options The default configuration file create by `tendermint init` has all the parameters set with their default values. It will look something like the file below, however, double check by inspecting the `config.toml` created with your version of `tendermint` installed: ``` # This is a TOML config file. # For more information, see https://github.com/toml-lang/toml ##### main base config options ##### # TCP or UNIX socket address of the ABCI application, # or the name of an ABCI application compiled in with the Tendermint binary proxy_app = "tcp://127.0.0.1:26658" # A custom human readable name for this node moniker = "anonymous" # If this node is many blocks behind the tip of the chain, FastSync # allows them to catchup quickly by downloading blocks in parallel # and verifying their commits fast_sync = true # Database backend: leveldb | memdb db_backend = "leveldb" # Database directory db_dir = "data" # Output level for logging log_level = "state:info,*:error" ##### additional base config options ##### # The ID of the chain to join (should be signed with every transaction and vote) chain_id = "" # Path to the JSON file containing the initial validator set and other meta data genesis_file = "genesis.json" # Path to the JSON file containing the private key to use as a validator in the consensus protocol priv_validator_file = "priv_validator.json" # Mechanism to connect to the ABCI application: socket | grpc abci = "socket" # TCP or UNIX socket address for the profiling server to listen on prof_laddr = "" # If true, query the ABCI app on connecting to a new peer # so the app can decide if we should keep the connection or not filter_peers = false ##### advanced configuration options ##### ##### rpc server configuration options ##### [rpc] # TCP or UNIX socket address for the RPC server to listen on laddr = "tcp://0.0.0.0:26657" # TCP or UNIX socket address for the gRPC server to listen on # NOTE: This server only supports /broadcast_tx_commit grpc_laddr = "" # Maximum number of simultaneous connections. # Does not include RPC (HTTP&WebSocket) connections. See max_open_connections # If you want to accept more significant number than the default, make sure # you increase your OS limits. # 0 - unlimited. # Should be < {ulimit -Sn} - {MaxNumInboundPeers} - {MaxNumOutboundPeers} - {N of wal, db and other open files} # 1024 - 40 - 10 - 50 = 924 = ~900 grpc_max_open_connections = 900 # Activate unsafe RPC commands like /dial_seeds and /unsafe_flush_mempool unsafe = false # Maximum number of simultaneous connections (including WebSocket). # Does not include gRPC connections. See grpc_max_open_connections # If you want to accept more significant number than the default, make sure # you increase your OS limits. # 0 - unlimited. # Should be < {ulimit -Sn} - {MaxNumInboundPeers} - {MaxNumOutboundPeers} - {N of wal, db and other open files} # 1024 - 40 - 10 - 50 = 924 = ~900 max_open_connections = 900 ##### peer to peer configuration options ##### [p2p] # Address to listen for incoming connections laddr = "tcp://0.0.0.0:26656" # Comma separated list of seed nodes to connect to seeds = "" # Comma separated list of nodes to keep persistent connections to persistent_peers = "" # UPNP port forwarding upnp = false # Path to address book addr_book_file = "addrbook.json" # Set true for strict address routability rules addr_book_strict = true # Time to wait before flushing messages out on the connection, in ms flush_throttle_timeout = 100 # Maximum number of inbound peers max_num_inbound_peers = 40 # Maximum number of outbound peers to connect to, excluding persistent peers max_num_outbound_peers = 10 # Maximum size of a message packet payload, in bytes max_packet_msg_payload_size = 1024 # Rate at which packets can be sent, in bytes/second send_rate = 5120000 # Rate at which packets can be received, in bytes/second recv_rate = 5120000 # Set true to enable the peer-exchange reactor pex = true # Seed mode, in which node constantly crawls the network and looks for # peers. If another node asks it for addresses, it responds and disconnects. # # Does not work if the peer-exchange reactor is disabled. seed_mode = false # Comma separated list of peer IDs to keep private (will not be gossiped to other peers) private_peer_ids = "" ##### mempool configuration options ##### [mempool] recheck = true recheck_empty = true broadcast = true wal_dir = "data/mempool.wal" # size of the mempool size = 100000 # size of the cache (used to filter transactions we saw earlier) cache_size = 100000 ##### consensus configuration options ##### [consensus] wal_file = "data/cs.wal/wal" # All timeouts are in milliseconds timeout_propose = 3000 timeout_propose_delta = 500 timeout_prevote = 1000 timeout_prevote_delta = 500 timeout_precommit = 1000 timeout_precommit_delta = 500 timeout_commit = 1000 # Make progress as soon as we have all the precommits (as if TimeoutCommit = 0) skip_timeout_commit = false # EmptyBlocks mode and possible interval between empty blocks in seconds create_empty_blocks = true create_empty_blocks_interval = 0 # Reactor sleep duration parameters are in milliseconds peer_gossip_sleep_duration = 100 peer_query_maj23_sleep_duration = 2000 ##### transactions indexer configuration options ##### [tx_index] # What indexer to use for transactions # # Options: # 1) "null" # 2) "kv" (default) - the simplest possible indexer, backed by key-value storage (defaults to levelDB; see DBBackend). indexer = "kv" # Comma-separated list of tags to index (by default the only tag is tx hash) # # It's recommended to index only a subset of tags due to possible memory # bloat. This is, of course, depends on the indexer's DB and the volume of # transactions. index_tags = "" # When set to true, tells indexer to index all tags. Note this may be not # desirable (see the comment above). IndexTags has a precedence over # IndexAllTags (i.e. when given both, IndexTags will be indexed). index_all_tags = false ##### instrumentation configuration options ##### [instrumentation] # When true, Prometheus metrics are served under /metrics on # PrometheusListenAddr. # Check out the documentation for the list of available metrics. prometheus = false # Address to listen for Prometheus collector(s) connections prometheus_listen_addr = ":26660" # Maximum number of simultaneous connections. # If you want to accept a more significant number than the default, make sure # you increase your OS limits. # 0 - unlimited. max_open_connections = 3 ```