Architectural Overview - VF Server running via OpenShift Offline
High-Level Overview
The vFunction Server running via OpenShift includes the following:
- 10+ Pods Containers (the Operand) running in an OpenShift Cluster in a dedicated Namespace and an Operator
- Two Persistent Volumes for MySQL and Measurements Storage
- One external Port open (80, 443, other) to listen for browser requests from end users and analysis information from the application(s)
Architectural Diagram
The vFunction Server includes the following Pods:
- vfunction-mysql
- vfunction-nginx
- vfunction-storage
- vfunction-vfapi-dm
- vfunction-vfapi-idp
- vfunction-vfapi-measurements
- vfunction-vfapi-organizations
- vfunction-vfapi-parser
- vfunction-vfapi-otlp
- vfunction-vfapi-users
The vFunction Server includes the following Persistent Volumes:
- vfunction-mysql-vol
- vfunction-storage-vol
Traffic Legend
External over open Port
End Users to Server
End Users access the Server via a Browser. Standard REST APIs are used to retrieve and update organization, application and measurement information and structure.
Agents to Server
The Agents send standard REST APIs to stop and start Learning and to upload Application details to the vFunction Server for analysis.
Internal over OpenShift Namespace’s Network
Nginx to API Containers
The Nginx Container forwards APIs from the browser or from Agents to the relevant services over Ports 8001, 8003, 8004, 8005, 8006 and 8007.
API Containers to MySQL Container
The API Containers send request to store and process all processed information.
Organizations API Container to SQL Parser Container
The Organizations API Container sends request to the SQL Parser Container to parse queries retrieved from .NET agents.
Measurements API Container to Storage Volume
The Measurements API Container sends requests to store and retrieve raw data to the Storage Container and its Persistent Volume.
Distributed Measurements API Container to Distributed Measurements Volume
The Distributed Measurements API Container sends requests to store and retrieve raw data to the Storage Container and its Persistent Volume.
Information gathered by vFunction from the Application
The vFunction Monolithic Agent gathers information about the Application and sends that information to the vFunction Server for analysis. That information contains statistical and structural data based on the Application’s behavior, including:
- Callstacks
- Field, method and class names
- External HTTP Connection data (IP Addresses, Hostnames)
- File names
- DB Query Metadata (Tables and Stored Procedures)