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From Ignazio Cassano <ignaziocass...@gmail.com>
Subject RE: cloudstack kvm openvswitch
Date Tue, 02 Jun 2015 06:45:04 GMT
On yesterday, we tried to install acs 4.4.2 and we found "ovs" in network
service provider panel.
It never appears in acs 4.5.1.
Now we have to verify if a gre tunnel is automatically created with an ovs
network offering.
We are trying with centos 6.6 and ovs 2.3.1: we suggest to leave the ovs
kernel module supplied by centos because the ovs 2.3.1 module causes some
kernel panics.
 Il giorno 01/giu/2015 09:31, "Vadim Kimlaychuk" <Vadim.Kimlaychuk@elion.ee>
ha scritto:

> Hello Ignazio,
>
>            I haven't been working with KVM and OVS for a while, but my
> previous experience with this plugin was unlucky. I will put some personal
> thoughts here and do not pretend to be 100% correct in all the points:
>            1. There is a number of OVS versions and which one(s) are
> officially supported -- don't know. Documentation said that is 1.9 (if you
> patch it), but I have successfully used 2.x versions without errors. Think
> documentation is outdated. Still  I was not sure that it is properly
> supported at CS level.
>            2. There are number of problems with plugin activation since
> 4.4 version. Look here for example:
> https://issues.apache.org/jira/browse/CLOUDSTACK-7446
>            3. I've been using OVS with VLAN isolation and have seen it is
> working with CS properly. What does exactly do "plugin activation" - don't
> know. May be plugin should put some more network offers. But since it was
> broken I was not able to test it.
>            4. Didn't try GRE. Have nothing to say here.
>            5. The overall feeling -- this functionality is not yet
> mature.  I also lacks documentation. Take it on your own risk
>
> Regards,
>
> Vadim
>
> -----Original Message-----
> From: Ignazio Cassano [mailto:ignaziocassano@gmail.com]
> Sent: Saturday, May 30, 2015 12:33 PM
> To: users@cloudstack.apache.org; remi@remi.nl
> Subject: Re: cloudstack kvm openvswitch
>
> Hi guys, last week we tried to install cloudstack 4.5.1  with two kvm
> nodes defining an advanced zone with gre isolation.
> Ovs never appears on network service providers but guests vlan are
> automatically created on ovs.
> Since gre tunnel between nodes has not automatically generated , we set up
> it manually and now  VMs can communicate between nodes.
> Why ovs does not appear in network service provider panel ?
> It should not appear if  "vlan isolation" was been choosen in
> configuration but we choose gre!
> Why gre tunnel was not generated ?
> Another question is related to the availability of ovs controllers ?
> Has anyone tried to configure any  opensource openvswitch controller with
> cloudstack ?
> Many thanks
> Ignazio
> Il giorno 24/apr/2015 10:50, "Remi Bergsma" <remi@remi.nl> ha scritto:
>
> > Hi,
> >
> > I recently worked on KVM with Open vSwitch, but controlled by NSX (aka
> > Nicira). Apart from the controller and some settings, it should be the
> > same.
> >
> > Some pointers:
> > http://docs.cloudstack.apache.org/en/latest/networking/ovs-plugin.html
> > https://cwiki.apache.org/confluence/display/CLOUDSTACK/KVM+with+OpenVS
> > witch
> >
> > http://blog.remibergsma.com/2015/04/04/adding-a-kvm-cluster-with-nsx-n
> > etworking-to-cloudstack/
> > (skip the NSX stuff)
> >
> > It is not needed anymore to compile ovs yourself. I worked with
> > CentOS6 and
> > 7 and Ubuntu 14.04 out of the box. There is some extra work to get STT
> > to work, but since you do use GRE instead you can ignore it.
> >
> > This is a script I wrote to help setup KVM/OVS/CloudStack in my lab to
> > be able to do quick POCs. It could help you too in setting up the
> > bridges and
> > interfaces:
> > https://github.com/remibergsma/openvswitch-kvm-config
> >
> > To answer your question about the tunnels: in my case they are created
> > on the fly. I would just give it a go and see if ovs creates any tunnels.
> >
> > Hope this helps.
> >
> > Regards,
> > Remi
> >
> >
> >
> > 2015-04-24 7:50 GMT+02:00 Ignazio Cassano <ignaziocassano@gmail.com>:
> >
> > > Thanks a lot.
> > > What I need to know is how I must prepare kvm nodes for openvswitch:
> > > for example if I must create a gre tunnel between nodes or if it is
> > > enough adding an address on each openvswitch  bridge.
> > > Regards
> > > Il giorno 24/apr/2015 06:22, "Sanjeev N" <sanjeev@apache.org> ha
> > scritto:
> > >
> > > > Hi ,
> > > >
> > > > We can't avoid configuring vlans on physical switched even if we
> > > > use
> > OVS
> > > > instead of bridge more on KVM. One option would be to use GRE
> > > > isolation instead of VLAN based in creating Physical network in a
> zone.
> > > >
> > > > -Sanjeev
> > > >
> > > > On Thu, Apr 23, 2015 at 4:05 PM, Ignazio Cassano <
> > > ignaziocassano@gmail.com
> > > > >
> > > > wrote:
> > > >
> > > > > Hi all,
> > > > > I would like to install a new cloudstack infrastracture with kvm
> > nodes
> > > > but
> > > > > I also would like to use OVS to configure guests vlan avoiding
> > > > > to
> > > > configure
> > > > > them on
> > > > > physical switches.
> > > > > I am planning to user three kvm nodes but I do not know how
> > > > > prepare
> > > them
> > > > to
> > > > > use OVS: must I create a gre tunnel between nodes ?
> > > > > Regards
> > > > >
> > > >
> > >
> >
>

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