Selfhosted

40173 readers

778 users here now

A place to share alternatives to popular online services that can be self-hosted without giving up privacy or locking you into a service you don't control.

Rules:

Be civil: we're here to support and learn from one another. Insults won't be tolerated. Flame wars are frowned upon.
No spam posting.
Posts have to be centered around self-hosting. There are other communities for discussing hardware or home computing. If it's not obvious why your post topic revolves around selfhosting, please include details to make it clear.
Don't duplicate the full text of your blog or github here. Just post the link for folks to click.
Submission headline should match the article title (don’t cherry-pick information from the title to fit your agenda).
No trolling.

Resources:

selfh.st Newsletter and index of selfhosted software and apps
awesome-selfhosted software
awesome-sysadmin resources
Self-Hosted Podcast from Jupiter Broadcasting

Any issues on the community? Report it using the report flag.

Questions? DM the mods!

founded 1 year ago

MODERATORS

[email protected]

Longhorn overkill for RAID ? (lemmy.world)

submitted 11 months ago by [email protected] to c/[email protected]

12 comments fedilink hide all child comments

Hello selfhosted !

Continuing my journey of setup up my home k3s cluster.

I’ve been asking myself if Longhorn might be overkill for my home cluster,here’s what i did:

3 machines running k3s each. One of them has a storage in Raid 5 and I dont want to use any storage from the other two.

Thing is, i had to configure replicas to 1 in longhorn for my pv to be green.

Hence my question, since data is already replicated in the array, shouldn’t I just use a NFS storage class instead?

Thanks !

you are viewing a single comment's thread
view the rest of the comments

[–] [email protected] 3 points 11 months ago (1 children)

Longhorn isn't just about replication (which is not backup, and RAID is not backup either). Also if you only have one replica, is it even different from local storage at this point?

You'd use longhorn to make sure applications don't choke and die when the storage they are using go down. Also, I'm not sure if you can supply longhorn storage to nodes that don't run it. I haven't tried it.

I suspect all pods that you'd define to use longhorn would only go up at the longhorn replica node.

All this is how I understand longhorn works. I haven't tried it this way, my only experience is running it on every node so if one node goes down pods can just restart on any other node and carry on.

[–] [email protected] 1 points 11 months ago

Hello ! Thanks for your response!

Yes RAID is used as availability of my data here, with or without longhorn, there wouldn’t be much difference there (especially since i only use one specific node)

And you would be right, since the other nodes are unscheduled, it will be available only on my “storage node” so if this one goes down my storage goes down.

That’s why i might be overkill with longhorn, but there are functions to restore and backup to s3 for exemple that i would need to setup i guess