I've been trying to remotely connect using JNDI to a JBoss server running on JBoss EAP 7, but so far I've had only trouble, and all of the tutorials I see are for EAP 6.4 or earlier.
My question is: Can EAP 7 still use Vault encryption, similar to how earlier versions did, or is it completely out-of-date?
Yes, the Vault is still suported in EAP 7. According to the documentation: The supported sources for resolving expressions are system properties, environment variables, and the vault
https://access.redhat.com/documentation/en/red-hat-jboss-enterprise-application-platform/7.0/single/configuration-guide/#property_replacement