Updates engine-specific attributes on a specified server. The server enters the MODIFYING state when this operation is in progress. Only one update can occur at a time. You can use this command to reset a Chef server's public key (CHEF_PIVOTAL_KEY) or a Puppet server's admin password (PUPPET_ADMIN_PASSWORD).

This operation is asynchronous.

This operation can only be called for servers in HEALTHY or UNHEALTHY states. Otherwise, an InvalidStateException is raised. A ResourceNotFoundException is thrown when the server does not exist. A ValidationException is raised when parameters of the request are not valid.