wekan/docs/Databases/mongodb-raspi4-qemu.md

Meteor podcast about using MongoDB at unsupported CPUs

• https://www.youtube.com/watch?v=bnU9bUVeN04
• Making MongoDB working with Qemu: https://github.com/wekan/wekan/issues/4321#issuecomment-3006557279

Installing MongoDB

MongoDB 8 arm64 works at M1 Air arm64 macOS and Linux.

But because MongoDB 8 core dumps at RasPi4, running it here with Qemu.

1. Install Ubuntu 24.04 arm64 for Raspberry Pi

2. Install MongoDB 8 repo for Ubuntu 24.04 arm64

3. Install deps:

   sudo apt -y install qemu-user
   

4. Rename MongoDB to different filename:

   sudo mv /usr/bin/mongod /usr/bin/mongodreal
   

5. Edit start scipt for Qemu MongoDB

   sudo nano /usr/bin/mongod
   

6. Copy paste start script for Qemu MongoDB

It uses qemu-user to run MongoDB, and passes all command line arguments to MongoDB.

#!/bin/bash
/usr/bin/qemu-arm64 /usr/bin/mongodreal --config /etc/mongod.conf

1. Save and exit nano: Ctrl-o Enter Ctrl-x Enter

2. Make script executeable

   sudo chmod a+x /usr/bin/mongod
   

3. Start and run MongoDB

   sudo systemctl enable mongod
   
   sudo systemctl start mongod