MongoDB

This repo publishes the docker image and helm chart for MongoDB.

Prerequisites

• Kubernetes 1.10+
• Helm 3.0+

Docker Image

• DockerHub

Helm Chart Components

This chart will do the following:

• Create a standalone MongoDB instance using a StatefulSet.
• Create a MongoDB replicaset having a primary, multiple secondary and multiple arbiter nodes using a StatefulSet.
• Create a PodDisruptionBudget.
• Create a Headless Service to control the domain of the MongoDB instances.
• Create a Service configured to connect to the available MongoDB instance on the configured client port.
• Optionally apply a Pod Anti-Affinity to spread the MongoDB cluster across nodes.
• Optionally start an Exporter container for Prometheus.
• Optionally create a Prometheus ServiceMonitor for exporter container.
• Optionally add a CronJob to take daily backup of MongoDB and save it in Google Cloud Storage.
• Optionally add prometheus alerts.

Installing the Chart

You can install the chart with the release name mongodb as below.

$ helm upgrade mongodb ./helm --install --namespace hypertrace

Configuration

You can specify each parameter using the --set key=value[,key=value] argument to helm install.

Alternatively, a YAML file that specifies the values for the parameters can be provided while installing the chart. For example,

$ helm upgrade my-release ./helm --install --namespace hypertrace -f values.yaml

Default Values

• You can find all user-configurable settings, their defaults in values.yaml.