Am Fr., 29. Mai 2020 um 23:32 Uhr schrieb <DHilsbos@performair.com>:
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.
But that does not save me when a crypto trojan encrypts all my data. There should always be an offline backup that can be restored in case of crypto trojan
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@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@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
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