Hi Grégoire,
Obviously hoping to work with you, but if you were a support customer we would
advise against this approach – moving all CloudStack traffic to a new physical
network is very much untested territory and we couldn’t guarantee success. We
would probably advise you to consider a phased swing migration – where you
potentially free up some of your existing hypervisors, rebuild these with the
correct networking and then add them as a new cluster in CloudStack – before
trying migrate your workload. As you then free up more resources on the
original cluster you can evacuate more hosts, rebuild them and add to the new
cluster, until you have all your hosts in the new cluster.
With regards to you “cs-mgmt” traffic question – keep in mind there is nothing
stopping you just keeping this where it is on eth0. You don’t need to use
labels for *primary storage* – this simply requires connectivity and
CloudStack doesn’t care how this works. The CloudStack storage network
labelling is purely for secondary storage. So if you add the new cards as
effectively IP based HBAs with an additional storage IP address and present new
primary storage pools purely over this interface you can simply add new NFS
shares as new primary storage pools. This means the XenServers will speak to
old primary storage on the existing interfaces (cs-mgmt?) and to the new
primary storage over the new interfaces (call this e.g. cs-primarystorage if
you want). This would potentially allow you to storage migrate from old to new
primary storage *without changing any existing CloudStack labelling*.
If you require more advanced traffic configuration changes than this the phased
migration mentioned above would be your best bet.
Regards,
Dag Sonstebo
Cloud Architect
ShapeBlue
On 21/11/2016, 16:47, "Grégoire Lamodière" <g.lamodi...@dimsi.fr> wrote:
Hi Dag,
Thanks for your quick reply.
As you can easily understand, the goal of this lab job is to be moved to
production later on, so un-predictable options are not really options
(specially when you'll know that Shapeblue will probably handle the support for
us in the coming weeks:))
The goal is to move our current SAS 6gbits storage to 10 Gbe, so yes, I was
assuming management network to a new network card (10 Gbe), and storage as well
(to take advantage of 10 Gbe rather than staying on the 1 Gbe link).
When you say " Keep in mind the physical network is mainly cosmetic", does
it stand for :
"Physical Network 1
Management traffic (ex. : cs-mgmt label)"
Doesn't mean that cs-mgmt network should be related to eth0 on the physical
host ?
In other work, can I plug my new network card, rename cs-mgmt on the old
one to cs-mgmt-old and create cs-mgmt on the new one ?
If so, you are right, I will add the card and move the management label to
the 10 Gbe.
But I assume I could do the same for the storage network label ?
Thanks again.
Best Regards.
---
Grégoire Lamodière
-----Message d'origine-----
De : Dag Sonstebo [mailto:dag.sonst...@shapeblue.com]
Envoyé : lundi 21 novembre 2016 16:59
À : users@cloudstack.apache.org
Objet : Re: Zone edit - Physical network update
Hi Gregoire,
First of all – I think you’re probably on very thin ice with this one – you
may be able to do this in the lab but it would be very risky to carry out in a
production environment.
Saying that – if you want to persevere and are happy this may break your
lab - a starting point would possibly be:
- Add the new cards to your XenServers.
- Create new networks in XenCentre – with new network labels.
- Not sure if this is required – but you would probably add the new
physical network using CloudMonkey. Keep in mind the physical network is mainly
cosmetic – your network configuration uses labelling only hence you may just
use the existing physical network.
- Stop CloudStack management.
- Hack the network labels in the cloud.host_details and
cloud.physical_network_traffic_types to reflect the new networks.
- On your XenServers / Xencentre move all existing networks (VLANs) to the
new networks (unsure of the steps or if this is possible).
- <insert other magic here>
- Restart management.
One other point – you mention this is for a *primary storage* migration –
keep in mind the storage network in the CS configuration is for *secondary
storage*. If all you want to do is to migrate to a new storage network and a
new storage backend your best bet is to:
- Add the new cards + configure the new storage network on the XenServers –
no need to label this.
- Present new primary storage pools from your NAS on the respective
networks – making sure the new NFS shares are only available over your 10Gbe
network.
- Add the new NFS shares as new primary storage pools in the ACS gui.
- Storage migrate from old NFS shares to new.
This is a much simpler way and would be a supported configuration change.
Hope this helps,
Regards,
Dag Sonstebo
Cloud Architect
ShapeBlue
On 21/11/2016, 14:50, "Grégoire Lamodière" <g.lamodi...@dimsi.fr> wrote:
Dear All,
In my lab, I have a CS 4.7 advanced zone working fine.
I am now in the process of testing a primary storage migration
(currently SAS based to 10 Gbe nfs).
To perform this migration, I need to attach new network controlers (10
Gbe controlers)
I have no problem for the hardware part of my work, but I am wondering
how CS can handle this change.
Right now, on my zone conf, I have :
- Physical Network 1
o Management traffic (with XenServer Label)
- Physical Network 2
o Public traffic
o Guest
o Storage
What is the best « CS way » to add my card (each with 2 10 Gbits
ports), add move management + Storage on the first port of the new card ?
- Physical Network 1
o No more traffic
- Physical Network 2
o Public
o Guest
- Physical Network 3 (first port of the new 10 Gbe card)
o Management
o Storage
I tried to play arround with create physical network, but I can't do
much with the newly created network (no way to assign traffic type to them).
Any help would be highly appreciated.
Best Regards.
---
Grégoire Lamodière
dag.sonst...@shapeblue.com
www.shapeblue.com
53 Chandos Place, Covent Garden, London WC2N 4HSUK @shapeblue
dag.sonst...@shapeblue.com
www.shapeblue.com
53 Chandos Place, Covent Garden, London WC2N 4HSUK
@shapeblue
