Management Console Architecture
MC accepts HTTP requests from a client web browser, gathers information from the Vertica database cluster, and returns that information to the browser for monitoring.
MC Components
The primary components that drive Management Console are an application/web server and agents that get installed on each node in the Vertica cluster.
The following diagram is a logical representation of MC, the MC user's interface, and the database cluster nodes.
Application/web Server
The application server hosts MC's web application and uses port 5450 for node-to-MC communication and to perform the following:
- Manage one or more Vertica database clusters
- Send rapid updates from MC to the web browser
- Store and report MC metadata, such as alerts and events, current node state, and MC users, on a lightweight, embedded (Derby) database
- Retain workload history
MC Agents
MC agents are internal daemon process that run on each Vertica cluster node. The default agent port, 5444, must be available for MC-to-node and node-to-node communications. Agents monitor MC-managed Vertica database clusters and communicate with MC to provide the following functionality:
- Provide local access, command, and control over database instances on a given node, using functionality similar to Administration Tools.
- Report log-level data from the Administration Tools and Vertica log files.
- Cache details from long-running jobs—such as create/start/stop database operations—that you can view through your browser.
- Track changes to data-collection and monitoring utilities and communicate updates to MC .
- Communicate between all cluster nodes and MC through a webhook subscription, which automates information sharing and reports on cluster-specific issues like node state, alerts,and events.
