MongoDB Backup & Restore Helm Chart

This Helm chart automates the process of MongoDB backup (using mongodump) and restore (using mongorestore) between two MongoDB instances.

📁 Project Structure

mongo-backup-restore/
├── templates/
│   ├── mongo-dump-pod.yaml       # Pod that performs mongodump
│   └── mongo-restore-pod.yaml    # Pod used for restoring data
├── values.yaml                   # Source and destination MongoDB URIs
├── Chart.yaml                    # Helm chart definition
├── deploy-mongo-backup-restore.sh # Bash script to automate the process

🔧 Configuration

Edit the values.yaml file to specify the source and destination MongoDB connection strings:

source:
  uri: "mongodb://<user>:<password>@<source-host>:27017/"

restore:
  namespace: "ferretdb"
  uri: "mongodb://<user>:<password>@<target-host>:27017/?socketTimeoutMS=300000&connectTimeoutMS=300000"

🚀 Usage

1. Make sure helm, kubectl, and yq are installed.
2. Deploy and run the backup/restore process:

chmod +x deploy-mongo-backup-restore.sh
./deploy-mongo-backup-restore.sh

📝 Notes

• The dump pod writes data to /dump and keeps running so you can copy files.
• The restore pod just runs with mongodb client to connect to target database later and dump the data.
• You can extend this with Kubernetes Jobs for fully automated lifecycle.

📦 Requirements

• Helm 3+
• Kubernetes cluster
• MongoDB access
• yq installed (brew install yq or apt install yq)