Hi, Last week I had a disaster which took me a few unnerving days to repair. My main Internet-facing server is a bare-metal installation with CentOS 7. It hosts four dozen web sites (or web applications) based on WordPress, Dolibarr, OwnCloud, GEPI, and quite a number of mail accounts for ten different domains. On sunday afternoon this machine had a hardware failure and proved to be unrecoverable.
The good news is, I always have backups of everything. In that case, I have a dedicated backup server (in a different datacenter in a different country). I’m using Rsnapshot for incremental backups, so I had all data: websites, mail accounts, database dumps, configurations, etc. Now here’s the problem: it took me three and a half days of intense work to restore everything and get everything running again. Three and a half days of downtime is quite a stretch. As far as I understand, my mistake was to use a bare-metal installation and not a virtualized solution where I could simply restore a snapshot of a VM. Correct me if I’m wrong. Now I’m doing a lot of thinking and searching. Proxmox and Ceph look quite promising. From what I can tell, the idea is not to use a big server but a cluster of many small servers, and aggregate them like you would do with hard disks in a RAID 10 array for example, only you would do this for the whole system. And then install one or several CentOS 7 VMs on top of this setup. Any advice from the pros before I dive head first into the documentation? Cheers from the sunny South of France, Niki -- Microlinux - Solutions informatiques durables 7, place de l'église - 30730 Montpezat Site : https://www.microlinux.fr Blog : https://blog.microlinux.fr Mail : i...@microlinux.fr Tél. : 04 66 63 10 32 Mob. : 06 51 80 12 12 _______________________________________________ CentOS mailing list CentOS@centos.org https://lists.centos.org/mailman/listinfo/centos
