Description of Admin Processes

The role of a NuoDB AdminAn interface for domain and database management. Introduced in NuoDB 4.0 to supersede NuoAgent, this interface is used to manage an admin domain. Use NuoDB Admin instead of NuoAgent to start and stop APs. When using NuoDB Admin to manage a domain and its databases, use NuoDB Command (nuocmd) instead of the NuoDB Manager (nuodbmgr) Command Line Interface (CLI) tool. See also Admin Process (AP). process is to provide database life cycle control (start, stop) for database processes, that is for Transaction Engines (TEs) and/or Storage Managers (SMs). An admin process provides the following:

Each admin process has a complete picture of the entire domain, including all hosts, and all databases and their processes. As you can see, a domain is functional only with at least one admin process. For continuous availability, each data center (and availability zone) should run at least one admin process.