Achieving high availability
by Andrea Chierici
Hi,
I am trying to configure high availability on a critical VM. My ovirt
version is 4.3.10.4-1.el7.
My question is about the best settings to specify, since it's not
completely clear to me how they influence the availability.
What I want is simply to have a specific machine ALWAYS running, or at
least, to be available as much as possible. I have no special
requirements on the VM, if it goes down, simply restarting it is fine.
Here is my current setting. Is it good or I'd better chage anything?
Thanks,
Andrea
--
Andrea Chierici - INFN-CNAF
Viale Berti Pichat 6/2, 40127 BOLOGNA
Office Tel: +39 051 2095463
SkypeID ataruz
--
4 years, 2 months
oVirt Storage DRS feature
by divan＠santanas.co.za
Greetings all :)
I'm wondering if oVirt supports the feature that VMware does, which is
in VMware land is called SDRS [1].
The idea is simple and I'm sure you all aware of it.
You have a "cluster" of storage domains, the engine monitors the backend
storage domains and auto balances the VMs across the storage domains
based on IO latency and disk usage.
If not, how are others out there managing this?
One could manually balance, but that's clearly not ideal.
[1]: https://www.youtube.com/watch?v=z77xmaxoNec
--
Divan Santana
https://divansantana.com
4 years, 2 months
Hello.which environment type I choose?
by 欧文
Dear:
Hello. My name is Owen. First, I appreciate you spend time to check my
email. Recently I want to use oVirt to build a project. But after reading
the official document, I have some questions to ask. The project is
intended to set up a physical server that is used to implement
virtualization, Variable quantity of thin clients for users. But I don't
know which environment types I should use to deploy. The number two
question is why the system environment is different between each version of
o-virt？Because centos 7 is the major version. But so many versions of
o-virt is not centos 7 or centos 8.can you tell me the reason. Thank you.At
last, I have a question.I ever joined the IRC, but there is no response to
answer my question. Could you tell me where I can take part in the
community with developers who develope o-virt.Thanks
4 years, 2 months
multipath and VDSM REVISION value mappings
by Gianluca Cecchi
Hello,
considering that the best practice is to keep the multipath.conf file
unmodified, is there a table with the mapping between the version of
oVirt/RHV and the value of "VDSM REVISION" in /etc/multipath.conf, so that
in case of doubts one can crosscheck (eg inherited environment where
different admins were managing...)?
Does this value depend only on the hypervisor installed sw version or also
on the Cluster Compatibility version of the cluster the host belongs to, or
on the engine version?
In several oVirt/RHV environments with 4.3 / 4.4 I see several numbers for
the VDSM REVISION from 2.0, to 1.9 and 1.5...
Also what could be the impact of having a wrong (higher or lower) revision
inside the file?
Thanks,
Gianluca
4 years, 2 months
oVirt + Proxmox Backup Server
by Diggy Mc
Is anyone using Proxmox Backup Server to backup VMs in an oVirt environment? Is it even possible?
I'm looking for a free open-source solution for my backup needs (backup VMs as well as traditional file backups). Any guidance is appreciated.
4 years, 2 months
move ovirt 4.3.9 to RHEL 8
by Paul Dyer
Hi,
I am laying the groupwork for upgrade ovirt to 4.4. Since the standalone
ovirt mgr is now running on RHEL 7, I have installed RHEL 8 to a new VM.
Unfortunately, after installing ovirt-release43, I am not able to find
documentation for the dnf modules required. All the current documentation
point to ovirt-release44 and dnf modules not available for ovirt 4.3/RHEL 8.
I have these repos enabled...
Repo ID: ansible-2-for-rhel-8-x86_64-rpms
Repo ID: rhel-8-for-x86_64-appstream-rpms
Repo ID: rhel-8-for-x86_64-baseos-rpms
I am looking setup docs for a standalone engine of ovirt 4.3 on RHEL 8.
Thanks!
--
Paul Dyer,
Mercury Consulting Group, RHCE
504-338-8750
4 years, 2 months
Re: AFFINITY GROUPS
by LS CHENG
ok
thank you
Is AFFINITY GROUPS extensively used?
Cheers
On Sun, Jan 31, 2021 at 10:42 AM Kim Kargaard <Kim.Kargaard(a)noroff.no>
wrote:
> You can select multiple hosts when selecting which host the VM can run on.
>
> Kim
> ------------------------------
> *From:* LS CHENG <lsc.oraes(a)gmail.com>
> *Sent:* Sunday, January 31, 2021 9:51 AM
> *To:* Strahil Nikolov <hunter86_bg(a)yahoo.com>
> *Cc:* users(a)ovirt.org <users(a)ovirt.org>
> *Subject:* [ovirt-users] Re: AFFINITY GROUPS
>
> Hi
>
> Yes, that can be trick as well. I am using affinity rules because I am
> trying to extend to more combinations. For examples 4 hosts and a vm can
> run in 2 hosts only etc.
>
> Thanks
>
> On Sun, Jan 31, 2021 at 9:14 AM Strahil Nikolov <hunter86_bg(a)yahoo.com>
> wrote:
>
> Why don't you go to VM settings and define that vm01 can run only on
> host_x?
> If the host is down, it won't start on host_y.
>
> Best Regards,
> Strahil Nikolov
> Sent from Yahoo Mail on Android
> <https://go.onelink.me/107872968?pid=InProduct&c=Global_Internal_YGrowth_A...>
>
> On Sat, Jan 30, 2021 at 23:09, LS CHENG
> <lsc.oraes(a)gmail.com> wrote:
> Hi
>
> I would like to know how AFFINITY GROUPS works.
>
> I have 2 VM in 2 hosts, each VM runs in a host. Let's call
>
> HOST_X where vm01 runs
> HOST_Y where vm02 runs
>
> I have set up an affinity group where it says vm01 relates to HOST_X, vm02
> relates to HOST_Y. VM affinity rule is set to negative and HOST affinity
> rule set to positive. I need both vm01 and vm02 to run in their respective
> physical host.
>
> I have a problem, when vm01 is stopped and HOST_Y is rebooted vm02 starts
> in HOST_X, how can I avoid that?
>
> Thank you
>
> Luis Sanchez
>
>
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>
4 years, 2 months
