Node Operators

This page describes how to run a node on Kroma.

This document serves as a guide for setting up different nodes on Kroma, taking you through the necessary hardware requirements and the installation and setup process. It also provides information on how to effectively run the node to contribute to the network's decentralization and earn rewards.

Kroma comprises three types of nodes: sequencer, validator, and full node. For more detailed information on Kroma’s architecture, please refer to this Medium article.

Currently, validator and full nodes can be run by anyone, whereas the operation of sequencer nodes is exclusively handled by the Kroma Foundation. The following components listed down below are used to run each code. For a detailed description of each node, please refer to the Github documentation.

Node	Components
Full node	kroma-geth, kroma-node
Sequencer	kroma-geth, kroma-node, kroma-batcher
Validator	kroma-geth, kroma-node, kroma-validator, kroma-prover

The following are the minimum and recommended hardware requirements to run each client on Kroma:

	Minimum	Recommended
kroma-geth	CPU with 2+ cores 4GB RAM 512GB free storage space to sync the Mainnet 8 MBit/sec download Internet service	Fast CPU with 4+ cores 16GB+ RAM High-performance SSD with at least 512GB of free space 25+ MBit/sec download Internet service
kroma-node	CPU with 1+ cores 2GB RAM	CPU with 2+ cores 4GB+ RAM
kroma-validator	CPU with 1+ cores 2GB RAM	CPU with 2+ cores 4GB+ RAM
kroma-prover	CPU with 48 cores 384GB RAM	CPU with 128 cores 1024GB RAM

Note: kroma-prover is expensive and only needed when a challenge occurs. It is recommended to turn it on and off as needed to generate a ZK fault proof.

You can find step-by-step guides on how to run a full node and a validator node in next pages.