Configuration
The parameters of a blockchain are configured after compiling the chain, and before starting the chain.
Parameters are set in the devtools/chain/genesis.toml and devtools/chain/config.toml.
Genesis Configuration
genesis.toml is about genesis parameters which are global to a blockchain, and most of which are critical to that blockchain’s consensus. Once the blockchain is initialized, most of these parameters cannot be changed. However, a small number can be updated using the metadata service and are marked as Upgradable below. All the nodes in a blockchain network should share the same genesis.toml.
Node Configuration
config.toml is about node running parameters which only affect individual nodes in a network. Different nodes can set their own parameters depending on their operation environment.