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MongoDB

MongoDB is a cross-platform document-oriented database. Classified as a NoSQL database, MongoDB eschews the traditional table-based relational database structure in favor of JSON-like documents with dynamic schemas, making the integration of data in certain types of applications easier and faster.

TL;DR;

$ helm install stable/mongodb

Introduction

This chart bootstraps a MongoDB deployment on a Kubernetes cluster using the Helm package manager.

Prerequisites

Kubernetes 1.4+ with Beta APIs enabled
PV provisioner support in the underlying infrastructure

Installing the Chart

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

$ helm install --name my-release stable/mongodb

The command deploys MongoDB on the Kubernetes cluster in the default configuration. The configuration section lists the parameters that can be configured during installation.

Tip: List all releases using helm list

Uninstalling the Chart

To uninstall/delete the my-release deployment:

$ helm delete my-release

The command removes all the Kubernetes components associated with the chart and deletes the release.

Configuration

The following tables lists the configurable parameters of the MongoDB chart and their default values.

Parameter	Description	Default
`image`	MongoDB image	`bitnami/mongodb:{VERSION}`
`imagePullPolicy`	Image pull policy	`Always` if `imageTag` is `latest`, else `IfNotPresent`.
`mongodbRootPassword`	MongoDB admin password	`nil`
`mongodbUsername`	MongoDB custom user	`nil`
`mongodbPassword`	MongoDB custom user password	`nil`
`mongodbDatabase`	Database to create	`nil`
`serviceType`	Kubernetes Service type	`ClusterIP`
`persistence.enabled`	Use a PVC to persist data	`true`
`persistence.storageClass`	Storage class of backing PVC	`nil` (uses alpha storage class annotation)
`persistence.accessMode`	Use volume as ReadOnly or ReadWrite	`ReadWriteOnce`
`persistence.size`	Size of data volume	`8Gi`

The above parameters map to the env variables defined in bitnami/mongodb. For more information please refer to the bitnami/mongodb image documentation.

Specify each parameter using the --set key=value[,key=value] argument to helm install. For example,

$ helm install --name my-release \
  --set mongodbRootPassword=secretpassword,mongodbUsername=my-user,mongodbPassword=my-password,mongodbDatabase=my-database \
    stable/mongodb

The above command sets the MongoDB root account password to secretpassword. Additionally it creates a standard database user named my-user, with the password my-password, who has access to a database named my-database.

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

$ helm install --name my-release -f values.yaml stable/mongodb

Tip: You can use the default values.yaml

Persistence

The Bitnami MongoDB image stores the MongoDB data and configurations at the /bitnami/mongodb path of the container.

The chart mounts a Persistent Volume volume at this location. The volume is created using dynamic volume provisioning.

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