Migrate MongoDB from really old version

Parse Server 📡
1

I’m in the process of upgrading from parse-server 2.x to the latest version and so far have been able to perform necessary steps to upgrade to 3.x. At this point I’m realizing that in order to get to the latest version, I’ll be required to update mongo along the way to meet each server requirement. What makes this process more challenging is that my server instance is running on a DigitalOcean Droplet that is running Ubuntu 14 which also needs to be upgraded as well given it has long been EOLd.

My question is, can I avoid OS updates and mongo updates by doing the following:

  1. Create a new droplet with the latest version of Ubuntu
  2. Install latest version of Mongo on that instance
  3. Add parse-server code and update to latest version of parse-server (this would be an update from 3.x to latest)
  4. Export mongoDB from old instance to new

This assumes that there is a way to export data running on 3.x server to be used on a server running the latest version.

Thanks!

1 Like
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Mongo versions need to be done incrementally version by version and from my experience works really smooth especially if you run mongo cluster so that you can avoid downtime.

Ubuntu can be also upgraded underneath mongo but that would cause too much downtime so it is IMHO better to just drop the instance and replace with new one.

I would add two more instances running new Ubuntu and old
Mongo, set them all up to form a cluster, then reconfigure the parse server to talk to cluster and then start upgrading the cluster version by version and parse server. This way you can drop the original instance and replace it with new member running latest Ubuntu…

Lot of work but can be done without downtime

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Thanks I’ll give that a try!