How to configure genesis_config for pre defined functional pallets?

Question

Substrate has provided some pre-defined functional pallets. We need to configure these pallet in our custom runtime in order to use them.

Some of these pallets like pallet_treasury, pallet_collective requires some changes to genesis config. If any one can please share some resource that explains the nitty-gritty of these configurations.

Answer 1

Configs are some parameters which don't touch the storage. You can configure them in the runtime.

Configure the pallet-balances.

https://github.com/paritytech/substrate/blob/8cfe326e4e33c5077fc67f197d6a13dd871881c7/bin/node/runtime/src/lib.rs#L435-L445

---

GenesisConfigs are some data that you want to set into the genesis state. You can configure them in the chain spec.

Setup the pallet-balances genesis state.

https://github.com/paritytech/substrate/blob/8cfe326e4e33c5077fc67f197d6a13dd871881c7/bin/node/cli/src/chain_spec.rs#L299-L301