Using Letsencrypt certificates for Vault setup on kubernetes

Hi All,

Requirement - is to setup Vault in kubernetes using the helm chart(Hashicorp helm chart) by leveraging lets encrypt certificates. Setup details as follows.

Infra - kubenetes
Vault cluster nodes count- 5
Autounseal - AWS KMS
Backend - Integrated storage(Raft)

As per the documentation we need to setup end to end tls encryption i.e from Client to Loadbalancer & Loadbalancer to target backends. So how does the certificate info(Letsencrypt) should be configured for Loadbalancer & raft backends.