Clients unable to reconnect to servers

Hello

I have a cluster of 3 Nomad servers and 3 Nomad clients. Everything is running well until I refresh the servers.

When I refresh the servers (restart one by one the instances), I can see in clients’ logs:

[ERROR] client.rpc: error performing RPC to server: error="rpc error: Permission denied" rpc=Status.Members server=10.43.2.239:4647
[ERROR] client.rpc: error performing RPC to server which is not safe to automatically retry: error="rpc error: Permission denied" rpc=Status.Members server=10.43.2.239:4647

10.43.2.239is the IP of one of the new servers.

I’m using cloud auto-join with AWS provider, and the config seems to be ok since it works well with a deployment from scratch (clients correctly connect to servers when clients are deployed after servers)

Could you explain to me what these logs mean and how to resolve the issue?

I can provide more configuration if needed, but I don’t know what is useful for helping.

Thanks