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From Carlos Reategui <car...@reategui.com>
Subject Re: Recommendations for a private cloud
Date Wed, 13 Feb 2013 01:51:00 GMT
Thanks for the pointers.

On Tue, Feb 12, 2013 at 1:29 AM, Sebastien Goasguen <runseb@gmail.com>wrote:

>
> On Feb 10, 2013, at 8:43 AM, Carlos Reategui <carlos@reategui.com> wrote:
>
> > Hi All, new to CloudStack and have many questions.  I am looking to
> > implement a private cloud for our engineering and qa teams to play around
> > and be able to launch test clusters prior to doing so in the cloud (AWS).
> > I started messing around with the CloudStack installation (3.0.2) and
> > setting up XCP 1.5  and 1.6 hosts and was a bit confused by the
> networking
> > setup (this is all internal, the VMs won't have a public interface).  I
> am
> > now in the process of starting over.  This time with the incubating
> release
> > (4.0.0) and was hoping to use Ubuntu 12.04 + xapi (aka Kronos) as it
> > provides better support for my network hardware (BCM quad 1Gbe) -- I had
> to
> > jump through hoops to get XCP 1.5 to work and 1.6 did not work with CS
> > 3.0.2.
> >
>
> Hi Carlos,
>
> I would use the 4.0.1 release.
>

I'll give that a try.

For Ubuntu, Gerry Havinga just posted a script that helps with the
> installation, you might want to check it out:
>
> http://opensourcetutorials.blogspot.nl/2013/02/adding-ubuntu-1204-kvm-host-to.html


I notice his script installs cloud-agent and cloud-system-iso, do I need
those as well for xapi on ubuntu?  Or are those for KVM only.  In looking
at the install docs, I don't see them mentioned in the Xenserver section.


>
> As far as networking, the first decision will be to decide whether you are
> going to use VLANs or not. If you don't use VLANs, you will setup a "basic"
> zone, if you can do VLANs you might want to setup an "advanced" zone.
>

I don't know much about VLANs so I was going to stick with a basic zone.
 Especially since I don't have a need for a public network.


> Shapeblue has some blogs that are very useful in addition to reading the
> documentation:
>
> http://www.shapeblue.com/2013/01/07/understanding-cloudstacks-physical-networking-architecture/
> http://www.shapeblue.com/2012/05/01/cloudstack-networking-considerations/
> and:
>
> http://www.shapeblue.com/2012/05/10/using-the-api-for-advanced-network-management/


Thanks for these, somehow had not run across them in my google searches.
 Although now I am confused about the "storage" network as he explains that
is for secondary storage.  In my setup I was going to start with the
management node also being the NFS storage for both primary and secondary.
 It has a 2 10Gbe and 2 1Gbe ports. I have the 10Gbe ports going to a
switch (dell 6224) that is physically isolated from the the rest of the
network and was planning on only having NFS traffic on that.  Should I also
configure that to be my "management" network?

Anyhow I have made some progress with 4.0 but got stuck not being able to
add a host, which I am pretty sure has to do with my host network
settings/labels.  Also the management server seems to think my "storage" ip
(172.30.19.10) is the management network (there is an alarm saying the
management server node is up on that ip).  How do I change that?
Also I see a couple other alarms: "management network CIDR is not
configured originally. set it default to 172.30.45.0/24" and "no usage
server process running".  Should I worry about that.

I have updated to 4.0.1 and will try to figure out my host network as "xe
network-list" does not seem to match what I have actually configured.

>
>
> -Sebastien
>
>
> > Has anyone had any success with 12.04 + xapi for the nodes?  The script
> to
> > add nodes seems to know about Kronos.  If this won't work is there a
> > preferred Xen host with somewhat up to date drivers (for a Dell R620 with
> > BCM 5720 Quad)?
> >
> > Regarding the network setup, what is the recommended setup with 4 1Gbe
> > ports?  I already have a separate storage network (NFS server has a 10Gbe
> > link) so I was thinking of bonding 2 ports for storage and 2 for
> > management/VM traffic.  Does this make sense to bond the second pair?
>  Do I
> > need separate subnets for management and vm network or are different
> ranges
> > within the same subnet enough (security is not a concern in my
> deployment).
> > Currently, corporate IS is providing me a subnet with DHCP.  Is that
> going
> > to be a problem for CS?
> >
> > I do have the option of adding another dual or quad port card.  If I do,
> > what would the recommended setup be?  The nodes have 2x8core CPU with
> 64GB
> > RAM.
> >
> > I definitely appreciate any pointers to help me off the ground.
> >
> > thank you,
> > Carlos
>
>

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