Components and Relations
StackState Self-hosted v4.5.x
This page describes StackState v4.5.x. The StackState 4.5 version range is End of Life (EOL) and no longer supported. We encourage customers still running the 4.5 version range to upgrade to a more recent release.
A component is anything that has a run-time state and some relation with other components. Some component examples are a load balancer, a database server, a network switch, or a business service. It is possible to define custom components, and they can be anything - the granularity and range can be defined according to the needs. Each component is of a specific type. Types can be configured.
A component consists of:
Components of the same type and/or state can optionally be grouped together into a single element. Grouped components are represented by a hexagon in the topology visualization. The size of the component group's hexagon in the topology visualization represents the number of components in the group:
- Less than 100 components = small hexagon
- 100 to 150 components = medium hexagon
- More than 150 components = large hexagon
A relation connects two components or groups of components. Relations have some similarities with components. Just like a component, they can have a state and a propagated state. In the StackState topology perspective, relations are shown as lines connecting components or component groups.
Relations in StackState can be either direct or indirect. The type of relation is indicated by the type of line connecting the components. You can customize the types of relations displayed in the visuzalization settings.
- Direct relations link two components that have a direct connection to each other.
- Indirect relations link two components that are connected together via a path of invisible components.
Click on a relation to view details in the right-hand pane.
Indirect relation path
If a relation indicates a dependency, the line will have an arrowhead showing the direction of the dependency. A dependency could be in one direction or in both directions, indicating that two components depend on each other, for example a network device talking to another networking device that has a bi-directional connection.
Health state will propagate from one component to the next upwards along a chain of dependencies. If the relation does not show a dependency between the components it connects (no arrowhead), it can be considered as merely a line in the visualizer or a connection in the stack topology.