How to add initial nominators in the customSpec.json?

Question

I want to generate a customSpec.json where i can manually add the accounts of the initial_nominators. I've seen the code chain_spec.rs where we in the fn testnet_genesis there is initial nominators. How can we add this in customSpec.json?

Answer 1

This is where you should start reading:

https://docs.substrate.io/build/chain-spec/

You have already found chain_spec.rs where there are a few functions staging_testnet_config_genesis and local_testnet_config cosponsoring to the different chains defined as names like dev local or staging (defined in command.rs).

At line 242 the vector initial_nominators is defined and at line 384 it is called with an empty argument, fill this vector with something like vec![authority_keys_from_seed("Bob")] to get some initial nominators.

Then compile and run your node with argument --chain=staging and save the output generated chainspec.