module-configuration-management.md

Gitops Configuration Management

This document describes how to prepare & execute the gitops config management demo

• Prerequisites
• Demo Preparation
  • Disable temperature in sensor 2 / revert to default (which is disabled)
  • Sync ArgoCD
• Demo Execution
  • Show that Sensor 2 currently does not send temperature data in Frontend Application
  • Wait for ArgoCD to sync application / trigger sync for machine-sensor
  • Show that sensor now sends configuration data
  • Review Change History

Prerequisites

The demo environment(s) have been bootstrapped.

This demo module is a continuation of the basic gitops application deployment module. It can be prepared independently, but needs to be executed after it.

Demo Preparation

Disable temperature in sensor 2 / revert to default (which is disabled)

cd ~/manuela-gitops/config/instances/manuela-<yourenv>/machine-sensor

OSX

sed -i ''c '/SENSOR_TEMPERATURE_ENABLED/d' machine-sensor-2-configmap.properties

Linux

sed -i '/SENSOR_TEMPERATURE_ENABLED/d' machine-sensor-2-configmap.properties

cd ~/manuela-gitops
git add .
git commit -m "reset sensor 2 temperature probe"
git push

Sync ArgoCD

This should happen automatically, but can be triggered through the ArgoCD UI and/or CLI

Demo Execution

Show that Sensor 2 currently does not send temperature data in Frontend Application

Adapt Application Instance configuration

cd ~/manuela-gitops/config/instances/manuela-<yourexecenv>/machine-sensor
echo "SENSOR_TEMPERATURE_ENABLED=true" >>machine-sensor-2-configmap.properties
cat machine-sensor-2-configmap.properties

MQTT_HOSTNAME=broker-amq-mqtt-all-0-svc-rte-manuela-stormshift-messaging.apps.ocp3.stormshift.coe.muc.redhat.com
MQTT_PORT=80
SENSOR_TEMPERATURE_ENABLED=true

Commit changes to Git

Similar to Sprint 1

Wait for ArgoCD to sync application / trigger sync for machine-sensor

Similar to Sprint 1

TODO - how can this be triggered automatically?

(Watch out: on CRC, sometimes this deployment is OOM killed and no change takes place).

Show that sensor now sends configuration data

Review Change History

In the ArgoCD UI, navigate to the machine-sensor application.

Click on the git commit hashcode to open the commit in GitHub.