Configure Nomad server and client integration with HashiCorp Vault in the `vault` block of a Nomad agent configuration. Configure cluster name and the role for creating tokens. For Nomad clients, configure Vault's address, namespace, and certificate or TLS authentication. Specify the JWT authentication path. For Nomad servers, configure the server's default workload identity, which includes workload identity recipients, workload TTL, and key-value pairs for additional identity claims.