10:23 a.m.
Hi,
I'm in the process of building a second ovirt cluster within the default
DC. This new cluster will use the same storage domains as the original
cluster, and I will slowly migrate VMs from the old cluster to the new.
Given that the old and new cluster hosts have a firewall between them I
need to ensure that all relevant ports are open, with particular attention
to the correct operation of SPM.
Is it sufficient to open TCP ports 16514 and 54321 to achieve this?
Thanks,
Alan
10:42 a.m.
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How do you make the new cluster to use the same storage domain as the
original one ? Storage Domains in oVirt are a bit confusing and less
flexible and I am not sure it allows it, does it ?
On 22/08/2017 12:23, Alan Griffiths wrote:
Hi,
I'm in the process of building a second ovirt cluster within the
default DC. This new cluster will use the same storage domains as the
original cluster, and I will slowly migrate VMs from the old cluster
to the new.
Given that the old and new cluster hosts have a firewall between them
I need to ensure that all relevant ports are open, with particular
attention to the correct operation of SPM.
Is it sufficient to open TCP ports 16514 and 54321 to achieve this?
Thanks,
Alan
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Users mailing list
Users(a)ovirt.org
http://lists.ovirt.org/mailman/listinfo/users
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<p>How do you make the new cluster to use the same storage domain as
the original one ? Storage Domains in oVirt are a bit confusing
and less flexible and I am not sure it allows it, does it ?<br>
</p>
<br>
<div class="moz-cite-prefix">On 22/08/2017 12:23, Alan Griffiths
wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAKc-zzY_9VqT5iws8n5JfiZTtT5UgWFrLKfD2o1X2DX-iuxg_w@mail.gmail.com">
<div dir="ltr">Hi,
<div><br>
</div>
<div>I'm in the process of building a second ovirt cluster
within the default DC. This new cluster will use the same
storage domains as the original cluster, and I will slowly
migrate VMs from the old cluster to the new.</div>
<div><br>
</div>
<div>Given that the old and new cluster hosts have a firewall
between them I need to ensure that all relevant ports are
open, with particular attention to the correct operation of
SPM.</div>
<div><br>
</div>
<div>Is it sufficient to open TCP ports 16514 and 54321 to
achieve this?</div>
<div><br>
</div>
<div>Thanks,</div>
<div><br>
</div>
<div>Alan</div>
</div>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<br>
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10:58 a.m.
It's my understanding that when you activate a host part of the process is
to verify that it can connect to all active storage domains. If it cannot
connect to any domain then it will refuse to go to the "up" state. In my
case the storage domains are FC so completely outside the TCP/IP stack.
On 22 August 2017 at 16:42, FERNANDO FREDIANI <fernando.frediani(a)upx.com>
wrote:
How do you make the new cluster to use the same storage domain as
the
original one ? Storage Domains in oVirt are a bit confusing and less
flexible and I am not sure it allows it, does it ?
On 22/08/2017 12:23, Alan Griffiths wrote:
Hi,
I'm in the process of building a second ovirt cluster within the default
DC. This new cluster will use the same storage domains as the original
cluster, and I will slowly migrate VMs from the old cluster to the new.
Given that the old and new cluster hosts have a firewall between them I
need to ensure that all relevant ports are open, with particular attention
to the correct operation of SPM.
Is it sufficient to open TCP ports 16514 and 54321 to achieve this?
Thanks,
Alan
_______________________________________________
Users mailing listUsers@ovirt.orghttp://lists.ovirt.org/mailman/listinfo/users
_______________________________________________
Users mailing list
Users(a)ovirt.org
http://lists.ovirt.org/mailman/listinfo/users
7:29 a.m.
Just found this in the RHV docs. I think sections 2.8 to 2.12 cover
everything you could wish to know about SPM process. It made it clear for
me anyway. Once SPM is elected then all communication is via the storage
domain, no TCP/IP comms required.
https://access.redhat.com/documentation/en-us/red_hat_virtualization/4.0/...
On 22 August 2017 at 16:58, Alan Griffiths <apgriffiths79(a)gmail.com> wrote:
It's my understanding that when you activate a host part of the
process is
to verify that it can connect to all active storage domains. If it cannot
connect to any domain then it will refuse to go to the "up" state. In my
case the storage domains are FC so completely outside the TCP/IP stack.
On 22 August 2017 at 16:42, FERNANDO FREDIANI <fernando.frediani(a)upx.com>
wrote:
> How do you make the new cluster to use the same storage domain as the
> original one ? Storage Domains in oVirt are a bit confusing and less
> flexible and I am not sure it allows it, does it ?
>
> On 22/08/2017 12:23, Alan Griffiths wrote:
>
> Hi,
>
> I'm in the process of building a second ovirt cluster within the default
> DC. This new cluster will use the same storage domains as the original
> cluster, and I will slowly migrate VMs from the old cluster to the new.
>
> Given that the old and new cluster hosts have a firewall between them I
> need to ensure that all relevant ports are open, with particular attention
> to the correct operation of SPM.
>
> Is it sufficient to open TCP ports 16514 and 54321 to achieve this?
>
> Thanks,
>
> Alan
>
>
> _______________________________________________
> Users mailing listUsers@ovirt.orghttp://lists.ovirt.org/mailman/listinfo/users
>
>
>
> _______________________________________________
> Users mailing list
> Users(a)ovirt.org
> http://lists.ovirt.org/mailman/listinfo/users
>
>
7:54 a.m.
On Tue, Aug 22, 2017 at 5:23 PM, Alan Griffiths <apgriffiths79(a)gmail.com>
wrote:
Hi,
I'm in the process of building a second ovirt cluster within the default
DC. This new cluster will use the same storage domains as the original
cluster, and I will slowly migrate VMs from the old cluster to the new.
Given that the old and new cluster hosts have a firewall between them I
need to ensure that all relevant ports are open, with particular attention
to the correct operation of SPM.
Is it sufficient to open TCP ports 16514 and 54321 to achieve this?
Thanks,
Alan
One note:
when you say:
I will slowly migrate VMs from the old cluster to the new.
what do you mean exactly with "migrate"?
If you mean Live Migraton as described here:
https://access.redhat.com/documentation/en-US/Red_Hat_
Enterprise_Virtualization/3.5/html/Administration_Guide/
sect-Migrating_Virtual_Machines_Between_Hosts.html
please note that you can live migrate a VM only within the same cluster,
not across.
You can edit a VM of a datacenter and change the cluster where it have to
start, but you have to first shutdown the VM to do so.
Probably you already considered this and the related potential downtime for
your services.
Gianluca
9:10 a.m.
I am planning to live migrate VMs. From my testing this works fine
providing cross cluster hosts can talk to each other and they share a
common migration network.
On 23 August 2017 at 13:54, Gianluca Cecchi <gianluca.cecchi(a)gmail.com>
wrote:
On Tue, Aug 22, 2017 at 5:23 PM, Alan Griffiths
<apgriffiths79(a)gmail.com>
wrote:
> Hi,
>
> I'm in the process of building a second ovirt cluster within the default
> DC. This new cluster will use the same storage domains as the original
> cluster, and I will slowly migrate VMs from the old cluster to the new.
>
> Given that the old and new cluster hosts have a firewall between them I
> need to ensure that all relevant ports are open, with particular attention
> to the correct operation of SPM.
>
> Is it sufficient to open TCP ports 16514 and 54321 to achieve this?
>
> Thanks,
>
> Alan
>
>
One note:
when you say:
I will slowly migrate VMs from the old cluster to the new.
what do you mean exactly with "migrate"?
If you mean Live Migraton as described here:
https://access.redhat.com/documentation/en-US/Red_Hat_Enterp
rise_Virtualization/3.5/html/Administration_Guide/sect-
Migrating_Virtual_Machines_Between_Hosts.html
please note that you can live migrate a VM only within the same cluster,
not across.
You can edit a VM of a datacenter and change the cluster where it have to
start, but you have to first shutdown the VM to do so.
Probably you already considered this and the related potential downtime
for your services.
Gianluca
2461
days inactive
2462
days old
5 comments
3 participants
participants (3)
-
Alan Griffiths -
FERNANDO FREDIANI -
Gianluca Cecchi