K3S backup

Steps

Backup

• Always back up your token.
• If you’re using
  • etcd snapshots, take snapshots and back them up somewhere.
  • sqlite, stop the server and back up the sqlite files.
  • an external database, back that up.
• If you have persistent volumes, use whatever tool your storage vendor recommends.

https://github.com/k3s-io/k3s/discussions/5886

Restoration

To roll back a K3s cluster when using a SQLite database, replace the .db file with the copy of the .db file you made while backing up your database.

Restoring the state.db file works (as long as the shm and wal files are deleted before restore). See k3s-datastore

Related Rollback

You can roll back the K3s Kubernetes version after an upgrade, using a combination of

• K3s binary downgrade
• and datastore restoration.

rollback