[ceph-users] Re: OSD backups and recovery

Ludek; As a cluster system, Ceph isn't really intended to be backed up. It's designed to take quite a beating, and preserve your data.

From a broader disaster recovery perspective, here's how I architected my clusters: Our primary cluster is laid out in such a way that an entire rack can fail without read / write being impacted, much less data integrity. On top of that, our RadosGW was a multi-site setup which automatically sends a copy of every object to a second cluster at a different location. Thus my disaster recovery looks like this: 1 rack or less: no user impact, rebuild rack 2 racks: users are unable to add objects, but existing data is safe, rebuild cluster (or as below) Whole site: switch second site to master and continue No backup or recovery necessary. You might look the multi-site documentation: https://docs.ceph.com/docs/master/radosgw/multisite/ I had a long conversation with our owner on this same topic, and how the organization would have to move from a "Backup & Recover" mindset to a "Disaster Recovery" mindset. It worked well for us, as we were looking to move more towards Risk Analysis based approaches anyway. Thank you, Dominic L. Hilsbos, MBA Director – Information Technology Perform Air International, Inc. DHilsbos(a)PerformAir.com www.PerformAir.com -----Original Message----- From: Ludek Navratil [mailto:ludek.navratil@yahoo.co.uk] Sent: Wednesday, February 5, 2020 6:57 AM To: ceph-users(a)ceph.io Subject: [ceph-users] OSD backups and recovery HI all, what is the best approach for OSD backups and recovery? We use only Radosgw with S3 API and I need to backup the content of S3 buckets. Currently I sync s3 buckets to local filesystem and backup the content using Amanda. I believe that there must a better way to do this but I couldn't find it in docs. I know that one option is to setup an archive zone, but it requires an additional ceph cluster that needs to be maintained and looked after. I would rather avoid that. How can I backup an entire Ceph cluster? Or individual OSDs in the way that will allow me to recover the data correctly? Many thanks,Ludek _______________________________________________ ceph-users mailing list -- ceph-users(a)ceph.io To unsubscribe send an email to ceph-users-leave(a)ceph.io _______________________________________________ ceph-users mailing list -- ceph-users(a)ceph.io To unsubscribe send an email to ceph-users-leave(a)ceph.io