The document discusses the architecture of Apache Stratos 4.1.0, including its load balancer architecture, use of Kubernetes resources, and composite application model. Stratos uses Kubernetes services to load balance traffic to pods, which contain Docker containers for each application instance. It also leverages Kubernetes to dynamically manage and scale applications deployed as composite applications.

1. Apache Stratos 4.1.0
Architecture
Imesh Gunaratne
Committer & PMC Member, Apache Stratos

2. Agenda
● Stratos Architecture
● Stratos Load Balancer Architecture
● Stratos Load Balancer Extension
Architecture
● Kubernetes Architecture
● Kubernetes Resources used by Stratos
● Composite Application Model

3. Stratos Architecture

4. Stratos Load Balancer Architecture

5. Stratos Load Balancer Extension
Architecture

6. Kubernetes Architecture

7. Kubernetes Resources Used by Stratos
● A Kubernetes Service is created
for each transport/port
mapping defined in the
cartridge.
● Kubernetes Service is a load
balancing service for Pods.
● A Kubernetes Pod is created
for each member in a cluster.
● A Kubernetes Pod is a group of
Docker containers.
● Kubernetes creates a separate
Docker container for
networking.

8. Composite Application Model

9. Try Stratos with Kubernetes
Download Stratos distribution, load balancer & samples:
https://dist.apache.org/repos/dist/dev/stratos/4.1.0-
kubernetes-v6/
Getting Started Guide:
https://gist.github.com/imesh/b8f81fac8de39183a504