Mongo

You can install MongoDB on Kubernetes environment using Helm. MongoDB installation can be done to meet Apinizer’s data storage needs and can be easily managed through Helm chart repository.

This installation method is not recommended for production environments.

MongoDB is installed as only a single replica and data is stored on the first suitable worker node that does not have control-plane role using hostPath.

If there is only one node in the cluster, the control-plane label and taint on the node must be removed with the following commands so that the pod can run on this node:

kubectl label node <node-name> node-role.kubernetes.io/control-plane-
kubectl taint nodes <node-name> node-role.kubernetes.io/control-plane:NoSchedule-

It is recommended to use NFS, Ceph, Longhorn or a cloud-based storage solution so that data can be stored independently of nodes.

Prerequisites

Before starting the installation, make sure the following requirements are met:

• Kubernetes cluster is ready and accessible
• Helm is installed in your environment

If Helm is not installed, you can review the Helm Installation Document page.

1) Adding Repository

helm repo add mongodb-charts https://apinizer1.github.io/mongodb-charts
helm repo update

2) Mongo Installation

You can perform MongoDB installation without any special settings by running the following command:

helm install mongodb-charts mongodb-charts/mongo

Note: Version mongo:8.0 is used in the current installation. If you want to prefer a more up-to-date version, you can use version mongo:8.0. You can review all Mongodb versions on Docker Hub.

Optional Parameters

Option	Default Value	Description
image.mongo	mongo:8.0	Specifies the version of MongoDB image.

If you want to use a different MongoDB version, you can specify the version by adding the optional parameter as in the example below in your Helm installation command:

helm install mongo-charts mongo-charts/mongo --set image.mongo=mongo:latest

3) Installation Information

Field	Description
TZ (Time Zone)	Europe/Istanbul – Set with TZ environment variable inside the container. Thus, application and MongoDB logs work according to Turkey time.
Database	apinizerdb
Username	kubectl get secret -n mongo mongodb-secret -o jsonpath="{.data.MONGO_ROOT_USERNAME}" | base64 --decode; echo
Password	kubectl get secret -n mongo mongodb-secret -o jsonpath="{.data.MONGO_ROOT_PASSWORD}" | base64 --decode; echo
Port	25080
Data directory	/mnt/data this directory is mapped with the path on your host machine (hostPath). Thus, data is kept on the host and is persistent.