NodeGroup is a concept of virtually categorizing one or more nodes into a group. Each nodegroup is identified uniquely using a group
name.Each group can have one or more nodes types in it at targeted
There are two types of NodeGroups that can be established using Stream Manager for autoscaling:
TIER 1 Groups : Tier 1 nodegroups are the common type of nodegroups that consist of one or more origin(s), one or more edge(s) and optionally one or more transcoder(s).
TIER 2 Groups : Tier 2 nodegroups are meant for large scale (both geographically and considering number of publisher/subscriber) deployments. These nodegroups consist of one or more origin(s), one or more edge(s), one or more relays(s) and optionally one or more transcoder(s).
Each group also has an associated
launch configuration and a
scale policy defined which provides the details of what to scale, how to scale, where to scale etc.
Throughout this document we may use the term
cluster interchangeably to describe a group of Red5 Pro nodes in the context of autoscaling.