[ovirt-users] oVirt 4 and Neutron
Devin Acosta
devin at pabstatencio.com
Fri Dec 2 18:44:48 UTC 2016
Marcin,
I installed the OVN-Central on a dedicated VM that lives on the ovirtmgmt
network, I also installed the OVN-Provider on this same instance. I then
installed the OVN-Controllers on all 3 of my oVirt Nodes, with the OVN
provider driver, and configured the vdsm ovn-controller {central-ip}
{ovirt-node-ip} on each of the boxes. It appears to be running but what I
am noticing is that the ovs-vswitchd process is pegged at 100% on all the
oVirt nodes.
So for instance from oVirt Node 3 (IP 75) the ovs-vsctl shows the IPs for
the other 2 nodes in it's configuration. It seems to be that way across all
3 nodes, they know about the other nodes in the cluster. I was able to
create a network inside of oVIRT using the external provider. After i
create a subnet inside oVirt I do get an error at the top but seems to be
ok?
[image: Inline image 2]
(Output from Node3 IP 75, of: ovs-vsctl show)
61af799c-a621-445e-8183-23dcb38ea3cc
Bridge br-int
fail_mode: secure
Port "ovn-c0dc09-0"
Interface "ovn-c0dc09-0"
type: geneve
options: {csum="true", key=flow, remote_ip="172.10.10.73"}
Port "ovn-456949-0"
Interface "ovn-456949-0"
type: geneve
options: {csum="true", key=flow, remote_ip="172.10.10.74"}
Port br-int
Interface br-int
type: internal
ovs_version: "2.6.90"
Example where the (ovs-vswitchd) is running at 100% on all 3 oVirt Nodes.
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
1768 root 10 -10 49680 10808 9388 R 100.0 0.0 24:48.85
ovs-vswitchd
[root at ovirt01 openvswitch]# tail -f ovs-vswitchd.log
2016-12-02T18:27:12.174Z|00604|poll_loop|INFO|Dropped 557231 log messages
in last 6 seconds (most recently, 0 seconds ago) due to excessive rate
2016-12-02T18:27:12.174Z|00605|poll_loop|INFO|wakeup due to 0-ms timeout at
vswitchd/bridge.c:3031 (100% CPU usage)
2016-12-02T18:27:18.174Z|00606|poll_loop|INFO|Dropped 536053 log messages
in last 6 seconds (most recently, 0 seconds ago) due to excessive rate
2016-12-02T18:27:18.174Z|00607|poll_loop|INFO|wakeup due to 0-ms timeout at
vswitchd/bridge.c:3031 (100% CPU usage)
2016-12-02T18:27:24.174Z|00608|poll_loop|INFO|Dropped 536369 log messages
in last 6 seconds (most recently, 0 seconds ago) due to excessive rate
2016-12-02T18:27:24.174Z|00609|poll_loop|INFO|wakeup due to 0-ms timeout at
vswitchd/bridge.c:3031 (100% CPU usage)
2016-12-02T18:27:30.174Z|00610|poll_loop|INFO|Dropped 532134 log messages
in last 6 seconds (most recently, 0 seconds ago) due to excessive rate
2016-12-02T18:27:30.174Z|00611|poll_loop|INFO|wakeup due to 1-ms timeout at
vswitchd/bridge.c:3031 (100% CPU usage)
2016-12-02T18:27:36.174Z|00612|poll_loop|INFO|Dropped 531659 log messages
in last 6 seconds (most recently, 0 seconds ago) due to excessive rate
2016-12-02T18:27:36.174Z|00613|poll_loop|INFO|wakeup due to 0-ms timeout at
vswitchd/bridge.c:3031 (99% CPU usage)
One other thing that I notice is that when I got to Provision a Virtual
Machine from the Main Data Center, my Networks don't show under the NIC
where I could select them? Am I missing something on this?
Thanks very much for your help.
Devin Acosta
On Fri, Dec 2, 2016 at 5:16 AM, Marcin Mirecki <mmirecki at redhat.com> wrote:
> Devin,
>
> > I presume the OVN Controller should just be some VM that is on the
> > ovirtmgmt network, or is there a preferred place to install the OVN
> > controller software?
>
> Please note the difference between OVN-Central and OVN-Controller:
> OVN-Central is the central part of OVN, storing the logical configuration
> and controlling the many OVN-Controllers
> OVN-Controller is the piece of software which resides on the ovirt-hosts,
> and manages the local OVS setup on the host.
>
> OVN-Central
> / | \
> / | \
> / | \
> / | \
> OVN-Controller OVN-Controller OVN-Controller
>
>
> OVN-central can be installed anywhere , as long as it can communicate with
> the engine and all the hosts.
> During development we install it along the ovirt engine for convinience.
>
> OVN-Controller must be installed on every ovirt host.
>
>
> >I then also assume I install the OVN agents onto all
> > the oVirt Nodes.
>
> Short answer: Yes
>
> Longe answer: If you plan not to use external networks on some clusters,
> you
> can skip its hosts.
> You can choose the clusters which support the external network by
> assigning the
> network to clusters.
>
> > I see
> > that when you go to add the External Provider, does OVN Controller use
> > authentication, is there any information I would need to have besides
> > knowing which node it's on in order to add it to external provider?
>
> For now it is only the url of the provider.
> The provider is still under development, authentication is still just an
> empty mock.
>
> >Would I
> > need to have any bridges or OVS configured on the nodes for this to work
> or
> > just install the services and get them configured and it just works?
>
> We are using the default 'br-int' bridge which OVN is using. All should be
> configured
> when OVS/OVN is installed.
>
> Let me know if I can help with anything else.
> Marcin
>
>
>
> ----- Original Message -----
> > From: "Devin Acosta" <devin at pabstatencio.com>
> > To: "Marcin Mirecki" <mmirecki at redhat.com>
> > Cc: "users" <Users at ovirt.org>, "Yaniv Dary" <ydary at redhat.com>
> > Sent: Thursday, December 1, 2016 6:19:07 PM
> > Subject: Re: [ovirt-users] oVirt 4 and Neutron
> >
> > I have manually created the RPM's successfully, I just want to clarify a
> > few items so I make sure I'm deploying this according to best practice.
> >
> > I presume the OVN Controller should just be some VM that is on the
> > ovirtmgmt network, or is there a preferred place to install the OVN
> > controller software? I then also assume I install the OVN agents onto all
> > the oVirt Nodes. My take on this is that this OVN replaces the more
> complex
> > Neutron/OVS installation, and makes for a more simple deployment. I see
> > that when you go to add the External Provider, does OVN Controller use
> > authentication, is there any information I would need to have besides
> > knowing which node it's on in order to add it to external provider?
> Would I
> > need to have any bridges or OVS configured on the nodes for this to work
> or
> > just install the services and get them configured and it just works?
> >
> >
> > Your assistance is appreciated.
> >
> > On Thu, Dec 1, 2016 at 3:54 AM, Marcin Mirecki <mmirecki at redhat.com>
> wrote:
> >
> > > Devin,
> > >
> > > The openvswitch OVN packages must be build manually at the moment. It
> is
> > > still not available either in the repos, nor as a download.
> > > For now please use the procedure attached below to build the OVN rpm's.
> > >
> > > I am not sure where 'firewalld-system' comes from. Is it not
> > > 'firewalld-filesystem'?
> > > This should be available from the standard repo.
> > >
> > > The ovirt-provider-ovn is being developed quite actively, and the
> blogpost
> > > is already somewhat outdated (even though it's not even a month old). I
> > > will try to update it asap.
> > >
> > > Thanks,
> > > Marcin
> > >
> > >
> > > BUILDING PROVIDER RPMS:
> > > ----------------------
> > > git clone https://gerrit.ovirt.org/ovirt-provider-ovn
> > > make rpm
> > >
> > >
> > >
> > >
> > > BUILDING OVN RPMS:
> > > ------------------
> > >
> > > Clone the repository:
> > >
> > > git clone https://github.com/openvswitch/ovs
> > >
> > > Install the following packages, as they are need to build ovn:
> > >
> > > yum -y install gcc make python-devel openssl-devel kernel-devel
> graphviz
> > > kernel-debug-devel autoconf automake rpm-build redhat-rpm-config
> rpm-build
> > > rpmdevtools bash-completion autoconf automake libtool PyQt4 groff
> > > libcap-ng-devel python-twisted-core python-zope-interface graphviz
> > > openssl-devel selinux-policy-devel
> > >
> > > Build the ovn rpms:
> > >
> > > cd ovs
> > > ./boot.sh
> > > ./configure
> > > make dist
> > > cp openvswitch-<version>.tar.gz $HOME/rpmbuild/SOURCES
> > > cd $HOME/rpmbuild/SOURCES
> > > tar xzf openvswitch-<version>.tar.gz
> > > cd openvswitch-<version>
> > > rpmbuild -bb rhel/openvswitch-fedora.spec
> > >
> > > The built rpms will reside here: ~/rpmbuild/RPMS/x86_64/
> > >
> > > --------------------
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > > ----- Original Message -----
> > > > From: "Yaniv Dary" <ydary at redhat.com>
> > > > To: "Devin Acosta" <devin at pabstatencio.com>, "Marcin Mirecki" <
> > > mmirecki at redhat.com>
> > > > Cc: "users" <Users at ovirt.org>
> > > > Sent: Thursday, December 1, 2016 11:15:00 AM
> > > > Subject: Re: [ovirt-users] oVirt 4 and Neutron
> > > >
> > > > Adding Marcin to help with this.
> > > >
> > > > Yaniv Dary
> > > > Technical Product Manager
> > > > Red Hat Israel Ltd.
> > > > 34 Jerusalem Road
> > > > Building A, 4th floor
> > > > Ra'anana, Israel 4350109
> > > >
> > > > Tel : +972 (9) 7692306
> > > > 8272306
> > > > Email: ydary at redhat.com
> > > > IRC : ydary
> > > >
> > > >
> > > > On Thu, Dec 1, 2016 at 6:42 AM, Devin Acosta <devin at pabstatencio.com
> >
> > > wrote:
> > > >
> > > > >
> > > > > Yaniv,
> > > > >
> > > > > I am looking at the page that talks about ovirt-provider-ovn, and
> it
> > > > > sounds like something I want to try. However the document seems to
> be
> > > not
> > > > > complete, and I'm not sure i fully understand how it should be
> > > deployed.
> > > > > When I downloaded the "ovirt-provider-ovn-driver-0-1.noarch.rpm"
> and
> > > try
> > > > > to install on the oVIRT nodes it complains about needing other
> packages
> > > > > such as:
> > > > >
> > > > > - openvswitch-ovn-central
> > > > > - python-openvswitch
> > > > > - firewalld-system
> > > > > - openvswitch-ovn-host
> > > > >
> > > > > I don't see anywhere where it talks about getting access to the
> RPMS
> > > for
> > > > > openvswitch-ovn-central. Also I presume like Neutron I would
> install
> > > OVN on
> > > > > a Master node and then install some clients on the nodes? Can you
> > > provide
> > > > > me additional information on this?
> > > > >
> > > > >
> > > > >
> > > > > On Tue, Nov 22, 2016 at 1:43 AM, Yaniv Dary <ydary at redhat.com>
> wrote:
> > > > >
> > > > >> We are working on a native path to SDN via OVN (experimental at
> this
> > > > >> point):
> > > > >> https://www.ovirt.org/blog/2016/11/ovirt-provider-ovn/
> > > > >>
> > > > >> Using Neutron is an option, but at some point the native option
> might
> > > be
> > > > >> easier to use (we want to add a UI for it and tighter
> integration).
> > > > >>
> > > > >> Yaniv Dary
> > > > >> Technical Product Manager
> > > > >> Red Hat Israel Ltd.
> > > > >> 34 Jerusalem Road
> > > > >> Building A, 4th floor
> > > > >> Ra'anana, Israel 4350109
> > > > >>
> > > > >> Tel : +972 (9) 7692306
> > > > >> 8272306
> > > > >> Email: ydary at redhat.com
> > > > >> IRC : ydary
> > > > >>
> > > > >>
> > > > >> On Tue, Nov 22, 2016 at 5:09 AM, Devin Acosta <
> devin at pabstatencio.com
> > > >
> > > > >> wrote:
> > > > >>
> > > > >>> oVirt Users:
> > > > >>>
> > > > >>> My work is currently deploying oVirt 4.0.5 into our Development
> > > > >>> environment. I see there use to be a maintained Openstack Neutron
> > > image
> > > > >>> that could be used with oVirt to provide SDN functionality. I'm
> > > > >>> suspecting
> > > > >>> that the reason for the image no longer being maintained is
> because
> > > it
> > > > >>> became a hassle to keep updated and patched. From what I
> understand
> > > the
> > > > >>> current idea is to just point your oVirt installation to an
> already
> > > > >>> installed Openstack setup. I can easily install an image and
> install
> > > the
> > > > >>> latest Openstack (Keystone/Neutron) and then point oVirt to it,
> but I
> > > > >>> want
> > > > >>> to understand if that is the proper way to move forward. Is
> there a
> > > > >>> general
> > > > >>> consensus with the way oVirt is moving in regards to Software
> Defined
> > > > >>> Networking and Neutron in general? Just want to ensure I
> understand
> > > it
> > > > >>> clearly before just installing my own Neutron if there is going
> to be
> > > > >>> another method.
> > > > >>>
> > > > >>> Any feedback is appreciated.
> > > > >>>
> > > > >>> Devin Acosta RHCA
> > > > >>>
> > > > >>>
> > > > >>> _______________________________________________
> > > > >>> Users mailing list
> > > > >>> Users at ovirt.org
> > > > >>> http://lists.ovirt.org/mailman/listinfo/users
> > > > >>>
> > > > >>>
> > > > >>
> > > > >
> > > > >
> > > > > --
> > > > >
> > > > > Devin Acosta
> > > > > Red Hat Certified Architect, LinuxStack
> > > > > 602-354-1220 || devin at linuxguru.co
> > > > >
> > > >
> > >
> >
> >
> >
> > --
> >
> > Devin Acosta
> > Red Hat Certified Architect, LinuxStack
> > 602-354-1220 || devin at linuxguru.co
> >
>
--
Devin Acosta
Red Hat Certified Architect, LinuxStack
602-354-1220 || devin at linuxguru.co
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