OUS

OpenCDS Update Service

Overview

The OpenCDS Update Service (OUS) performs two primary functions:

• To register DSS pods in the Document Database.

• To respond to DSS preEvaluateHook requests, maintaining synchronization of authored Knowledge Modules in DSS pods.

Service Mesh

Interactions

OUS is invoked by both the Decision Support Service container, and the DSS Preflight container.

Placement

Workload should be deployed to both the authoring and reportability environments.

Pod Specification

Attributes

Parameter	Value
Name	opencds-update-service
Restart Policy	Always
Termination Grace Period (seconds)	20
Tolerations (optional for AIMS environments)	N/A

Containers

OUS Container

Volumes

Pod does not require any Volume resource requirements.

Workload Definition

Production Environments

Reportability Environment

Provision workload as a Kubernetes Deployment resource, with RollingUpdate strategy and the following attributes for nominal operation state:

Parameter	Value
Replicas	20
Minimum Ready Seconds	10
Maximum Surge	10
Maximum Unavailable	5

Authoring Environment

Provision workload as a Kubernetes Deployment resource, with RollingUpdate strategy and the following attributes for nominal operation state:

Parameter	Value
Replicas	1
Minimum Ready Seconds	10
Maximum Surge	1
Maximum Unavailable	0

Non-Production Environments

Workload Identity

A Kubernetes Service Account named opencds-update-service should be associated with this workload, for bindings specified in containers.