yogeshlonkar/three-tier-chart-with-mongodb

Helm chart for React, Node, Mongo App

three-tier-chart-with-mongodb

This chart deploys a three tier application. reactapp is used as front-end, nodeapp as back-end along with mongodb StatefulSet. This chart also exposes Ingress service for nodeapp. The chart manages depdendency between different pods using pod-dependency-init-container.

Prerequisites

• Kubernetes 1.8+
• helm 2.10+

Installing the Chart

To install the chart with the release name my-release:

$ helm install . -n my-release

For upgrade

After modifying app images/tags in yaml below can be used to upgrade app

$ helm upgrade my-release .

Uninstalling the Chart

To uninstall/delete the my-release deployment:

$ helm delete my-release

Persistence

Chart whill create StorageClass, PersistanceVolume and PersistanceVolumeClaim.

• Mongodb urls will be templatized in _helper.tpl which is injected as env in nodeapp containers
• Note: uninstalling chart will not remove PersistanceVolume and PersistanceVolumeClaim, They need to be manually removed.

RBAC

service-account.yaml creates a service account which is used by pod-dependency-init-container to resolve pod dependecies.