> On 6. 4. 2021, at 18:06, Sandro Bonazzola <[email protected]> wrote: > > > > Il giorno dom 4 apr 2021 alle ore 16:13 Nicolas Kovacs <[email protected] > <mailto:[email protected]>> ha scritto: > Hi, > > I'm a 53-year old Austrian living in Montpezat, a small village in South > France. I'm an IT professional with a focus on Linux and free software, and > I've been a Linux user since Slackware 7.1. > > Welcome to oVirt community!
Hi! > > > > I'm doing web & mail hosting for myself and several small structures like our > local school and a handful of local companies. Up until recently these > hostings > have happened on "bare metal" root servers using CentOS 7. One main server is > hosting most of the stuff: WordPress sites, one OwnCloud instance, Dolibarr > management software, GEPI learning platform, Postfix/Dovecot mail server, > Roundcube webmail, etc. > > This setup has become increasingly problematic to manage, since applications > have more and more specific requirements, like different versions of PHP and > corresponding modules. > > So I decided to split everything up nicely into a series of virtual machines, > each one with a nicely tailored setup. > > I have a couple of sandbox servers, one public and one local, running Oracle > Linux 7 (a RHEL clone like CentOS). I played around with it, and KVM-based > virtualization already works quite nicely. > > While looking for documentation, I stumbled over oVirt, which I didn't even > know existed until last week. Before I dive head first into it, I'd be curious > to know a few general things. > > 1. Would it be overkill for a small structure like mine? > > If you have only a couple of bare metal and a few VMs you may consider more > lightweight virtualization managers like cockpit project machine plugin > (https://cockpit-project.org/guide/latest/feature-virtualmachines > <https://cockpit-project.org/guide/latest/feature-virtualmachines> ) or > kimchi project (https://github.com/kimchi-project/kimchi > <https://github.com/kimchi-project/kimchi> ) or virt-manager > (https://virt-manager.org/ <https://virt-manager.org/> ) We’ve seen people with 70+ machines being managed by shell scripts and libvirt, and also oVirt users with just a single host. Those would be extremes. I would personally start using oVirt once I have more than 4-5 hosts or so, and/or more than 20 VMs. > > > > 2. Will I be able to do HA on a series of modest KVM-capable root servers even > if they are located in different datacenters across different countries? > > I think it mostly depends on the network latency and speed. Having HA with > servers in different countries may be problematic. yeah, in a stretched cluster setup it would work, but the expectations are that the link is almost as local. It does work ok with several hundred ms latency. but it needs to be reliable. > > > 3. One problem I couldn't resolve using a bone-headed keep-it-simple KVM setup > is backup. For my bare-metal servers I've been using incremental backups using > Rsnapshot for years. Here's a blog article I wrote on the subject: > > https://blog.microlinux.fr/rsnapshot-centos-7/ > <https://blog.microlinux.fr/rsnapshot-centos-7/> > > Unfortunately I can't use this approach with huge QCOW images, at least not > without jumping through burning loops. > > Is there an easy way to perform remote incremental backups with oVirt? > > There are a few backup vendors that provide solutions for backing up oVirt > VMs, you can just query google for them. I think none of the vendors are ready with their products to use incremental backup just yet. it’s close though. you can also just adapt and use examples[1] of the incremental backup feature[2]. if you’d want to just hack up some DIY backup solution. incremental backup us a fairly recent addition to oVirt (and to qemu/libvirt in general) Thanks, michal [1] https://github.com/oVirt/ovirt-engine-sdk/blob/master/sdk/examples/backup_vm.py [2] https://www.ovirt.org/documentation/incremental-backup-guide/incremental-backup-guide.html > > > > BTW, I took a peek at Proxmox and Ceph, but I admit I'm a die-hard RHEL-clone > user. > > Cheers from the sunny South of France, > > Niki > > -- > Microlinux - Solutions informatiques durables > 7, place de l'église - 30730 Montpezat > Site : https://www.microlinux.fr <https://www.microlinux.fr/> > Blog : https://blog.microlinux.fr <https://blog.microlinux.fr/> > Mail : [email protected] <mailto:[email protected]> > Tél. : 04 66 63 10 32 > Mob. : 06 51 80 12 12 > _______________________________________________ > Users mailing list -- [email protected] <mailto:[email protected]> > To unsubscribe send an email to [email protected] > <mailto:[email protected]> > Privacy Statement: https://www.ovirt.org/privacy-policy.html > <https://www.ovirt.org/privacy-policy.html> > oVirt Code of Conduct: > https://www.ovirt.org/community/about/community-guidelines/ > <https://www.ovirt.org/community/about/community-guidelines/> > List Archives: > https://lists.ovirt.org/archives/list/[email protected]/message/I734ZR3ITWA6RSBSXVHO2DAOELTY4I54/ > > <https://lists.ovirt.org/archives/list/[email protected]/message/I734ZR3ITWA6RSBSXVHO2DAOELTY4I54/> > > > -- > Sandro Bonazzola > MANAGER, SOFTWARE ENGINEERING, EMEA R&D RHV > Red Hat EMEA <https://www.redhat.com/> > [email protected] <mailto:[email protected]> > <https://www.redhat.com/> > Red Hat respects your work life balance. Therefore there is no need to answer > this email out of your office hours. > <https://mojo.redhat.com/docs/DOC-1199578> > > > _______________________________________________ > Users mailing list -- [email protected] > To unsubscribe send an email to [email protected] > Privacy Statement: https://www.ovirt.org/privacy-policy.html > oVirt Code of Conduct: > https://www.ovirt.org/community/about/community-guidelines/ > List Archives: > https://lists.ovirt.org/archives/list/[email protected]/message/H4VISZGSPAXXURZIIV3EU25I2HRFQLIV/
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