nodeos is the core service daemon that runs on every EOSIO node. It can be configured to process smart contracts, validate transactions, produce blocks containing valid transactions, and confirm blocks to record them on the blockchain.


nodeos is distributed as part of the EOSIO software suite. To install nodeos, visit the EOSIO Software Installation section.


Navigate the sections below to configure and use nodeos.

  • Usage - Configuring and using nodeos, node setups/environments.
  • Plugins - Using plugins, plugin options, mandatory vs. optional.
  • Replays - Replaying the chain from a snapshot or a blocks.log file.
  • RPC APIs - Remote Procedure Call API reference for plugin HTTP endpoints.
  • Logging - Logging config/usage, loggers, appenders, logging levels.
  • Concepts - nodeos concepts, explainers, implementation aspects.
  • Troubleshooting - Common nodeos troubleshooting questions.
  • Deprecation Notices - Lists nodeos deprecated functionality.
Access Node

A local or remote EOSIO access node running nodeos is required for a client application or smart contract to interact with the blockchain.