NPoS with Aura - no planned era

Question

UPDATE: The election always finalizes with Election Fallback and set of validators doesnt't and neither does the Era, but sessions keep increasing. I understand that an era is just a couple of sessions after which Staking does reward/slashes, and having set the Session length, the proper ElectionDataProvider and ElectionProvider, I am unable to resolve the issue still.

I'm implementing a permissioned EVM compatible NPoS chain on the Frontier node template using Aura as my block producer.

I have implemented the necessary pallets(Staking, timestamp, session, GRANDPA(came pre implemented), evm/ethereum etc).

I've set 3 initial stakers/Aura authorities(Alice, Bob, Charlie) and expect to manually add more.

The chain works fine in local testnet, however this is an event that is emitted, indicating that election is not triggered. Can anyone suggest what the issue is?

Here is the configuration for my Staking, Session and Grandpa pallet.

Answer 1

What I understand from your question is that you want EVM compatibility in your chain, so the best option for that is to integrate EVM pallet to you chain instead of changing in frontier.

And also you want to implement NPoS using AURA which is quite a difficult task, as NPoS uses Phragmen Elections which depends on a weighted system and AURA does not have weighted implementation whereas BABE implement weights, you can check here.

If you want to go with AURA for block production than you need to implement weights in it and accordingly change GRANDPA to make it work properly.

I hope this helps.