[ovirt-users] Re: Network/Storage design

[Alastair Neil]

fyi My config:
for storage each system has 2x10 GBe lacp bonded to two switches in an mlag
group
1x1Gbe ovirtmgmnt
1x1Gbe public VM netrwork
1x1Gbe private VM nertwork
1x1Gbe trunked to provide tagged vlans to VMs



On Wed, 7 Nov 2018 at 13:10, Josep Manel Andrés Moscardó <
josep.mosca...@embl.de> wrote:

> Hi,
> thanks for the info.
> So management network is used to deploy new images, but if I deploy the
> VM's from PXE server, I guess this is not needed, right?
>
> The storage network is clear.
>
> And then the entworks for the VM's I guess that are the networks with
> VLAN's, in my case, that will be used by the VM's. But, Which is the
> network for migrating VM's from one host to the other? Does it need to
> be non usable by the the VM's?
>
> Thanks.
>
> On 7/11/18 16:53, Nir Soffer wrote:
> > On Wed, Nov 7, 2018 at 4:17 PM Josep Manel Andrés Moscardó
> > mailto:josep.mosca...@embl.de>> wrote:
> >
> > Hi,
> > I am new to oVirt and trying to deploy a cluster to see whether we
> can
> > move from VMWare to oVirt, but my first stopper is how to do a proper
> > design  for the infrastructure,
> >
> > how many networks do I need?, I have 2x10Gb SFP+ and 4x1Gb ethernet.
> >
> > For storage we have NFS coming from Netapp and ceph.
> >
> > Could someone point me in the right direction?
> >
> >
> > You can use 1G nic for the management network, but note that if you
> > want to upload and download images we use this network, so best have
> > a fast enough network for management.
> >
> > You want separate network for storage (NFS/Ceph) - this your biggest
> > bottleneck.
> >
> > Then you want a fast network for VMs. Migrating VMs from host to host
> > needs also fast network, but is not very common.
> >
> > It depends also what the VMs are used for - database? desktops?
> > web servers? rendering nodes?
> >
> > I guess you can learn from other users.
> >
> > Nir
>
> --
> Josep Manel Andrés Moscardó
> Systems Engineer, IT Operations
> EMBL Heidelberg
> T +49 6221 387-8394
>
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[ovirt-users] Re: Network/Storage design

[Josep Manel Andrés Moscardó]

Hi,
thanks for the info.
So management network is used to deploy new images, but if I deploy the 
VM's from PXE server, I guess this is not needed, right?


The storage network is clear.

And then the entworks for the VM's I guess that are the networks with 
VLAN's, in my case, that will be used by the VM's. But, Which is the 
network for migrating VM's from one host to the other? Does it need to 
be non usable by the the VM's?


Thanks.

On 7/11/18 16:53, Nir Soffer wrote:
On Wed, Nov 7, 2018 at 4:17 PM Josep Manel Andrés Moscardó 
mailto:josep.mosca...@embl.de>> wrote:


Hi,
I am new to oVirt and trying to deploy a cluster to see whether we can
move from VMWare to oVirt, but my first stopper is how to do a proper
design  for the infrastructure,

how many networks do I need?, I have 2x10Gb SFP+ and 4x1Gb ethernet.

For storage we have NFS coming from Netapp and ceph.

Could someone point me in the right direction?


You can use 1G nic for the management network, but note that if you
want to upload and download images we use this network, so best have
a fast enough network for management.

You want separate network for storage (NFS/Ceph) - this your biggest
bottleneck.

Then you want a fast network for VMs. Migrating VMs from host to host
needs also fast network, but is not very common.

It depends also what the VMs are used for - database? desktops?
web servers? rendering nodes?

I guess you can learn from other users.

Nir


--
Josep Manel Andrés Moscardó
Systems Engineer, IT Operations
EMBL Heidelberg
T +49 6221 387-8394



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[ovirt-users] Re: corrupted hosted engine

[Jarosław Prokopowski]

I tried the option to "Scan Disks" for the imported storage domain but I
get this error in engine.log and does not change anything:

2018-11-07 16:41:25,440+01 ERROR
[org.ovirt.engine.core.vdsbroker.vdsbroker.GetVolumeInfoVDSCommand]
(default task-34) [51450801-5353-4e8b-b72a-66ddd71ba6b2] Failed in
'GetVolumeInfoVDS' method
2018-11-07 16:41:25,440+01 INFO
[org.ovirt.engine.core.vdsbroker.vdsbroker.GetVolumeInfoVDSCommand]
(default task-34) [51450801-5353-4e8b-b72a-66ddd71ba6b2] Command
'org.ovirt.engine.core.vdsbroker.vdsbroker.GetVolumeInfoVDSCommand' return
value '
VolumeInfoReturn:{status='Status [code=201, message=Volume does not exist:
(u'37bc4b45-69f9-4dc4-a9b8-c6f4582c6cbe',)]'}


I was able to find the correct disk images in the glusterfs volume and
uploaded one of them through the web interface and attached to
corresponding imported virtual machine.
The VM does not start completely. It complains now about disk size:
Device /dev/sda2 has size of 22528 sectors which is smaller than
corresponding PV size of 166746122
This is thin provision disk.

Do you have any ideas?




On Wed, Nov 7, 2018 at 12:22 PM Jarosław Prokopowski 
wrote:

> Actually the VM is in Compute -> Virtual Machines but it does not have any
> Instance Images attached. How can I attach its original disk image?
>
> On Wed, Nov 7, 2018 at 12:12 PM Jarosław Prokopowski <
> jprokopow...@gmail.com> wrote:
>
>> Thanks for your responses.
>>
>> VM was up but network was down in it so I could not use ssh.
>> I didn't know the trick with  with VNC password. Thanks Simone it may
>> come handy in the future.
>>
>> I recreated the self hosted engine and imported the Data storage domain.
>> Now I have another problem. The VMs are visible in the "VM Import" tab
>> but there is nothing in "Template import" tab.
>> When I imported the first VM with "Allow partial" option selected it just
>> disappeared after the import and I cannot find it.
>> How can I use it now?
>>
>> Thanks
>> Jarek
>>
>> On Wed, Nov 7, 2018 at 11:07 AM  wrote:
>>
>>>
>>> >
>>> > The VM status is:
>>> "vm": "up",
>>> > "detail": "Up"}
>>> >
>>>
>>> VM is up
>>> try to use ssh
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[ovirt-users] Re: Network/Storage design

[Nir Soffer]

On Wed, Nov 7, 2018 at 4:17 PM Josep Manel Andrés Moscardó <
josep.mosca...@embl.de> wrote:

> Hi,
> I am new to oVirt and trying to deploy a cluster to see whether we can
> move from VMWare to oVirt, but my first stopper is how to do a proper
> design  for the infrastructure,
>
> how many networks do I need?, I have 2x10Gb SFP+ and 4x1Gb ethernet.
>
> For storage we have NFS coming from Netapp and ceph.
>
> Could someone point me in the right direction?
>

You can use 1G nic for the management network, but note that if you
want to upload and download images we use this network, so best have
a fast enough network for management.

You want separate network for storage (NFS/Ceph) - this your biggest
bottleneck.

Then you want a fast network for VMs. Migrating VMs from host to host
needs also fast network, but is not very common.

It depends also what the VMs are used for - database? desktops?
web servers? rendering nodes?

I guess you can learn from other users.

Nir
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[ovirt-users] Network/Storage design

[Josep Manel Andrés Moscardó]

Hi,
I am new to oVirt and trying to deploy a cluster to see whether we can 
move from VMWare to oVirt, but my first stopper is how to do a proper 
design  for the infrastructure,


how many networks do I need?, I have 2x10Gb SFP+ and 4x1Gb ethernet.

For storage we have NFS coming from Netapp and ceph.

Could someone point me in the right direction?

Thanks.



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[ovirt-users] Re: corrupted hosted engine

[Jarosław Prokopowski]

Actually the VM is in Compute -> Virtual Machines but it does not have any
Instance Images attached. How can I attach its original disk image?

On Wed, Nov 7, 2018 at 12:12 PM Jarosław Prokopowski 
wrote:

> Thanks for your responses.
>
> VM was up but network was down in it so I could not use ssh.
> I didn't know the trick with  with VNC password. Thanks Simone it may come
> handy in the future.
>
> I recreated the self hosted engine and imported the Data storage domain.
> Now I have another problem. The VMs are visible in the "VM Import" tab but
> there is nothing in "Template import" tab.
> When I imported the first VM with "Allow partial" option selected it just
> disappeared after the import and I cannot find it.
> How can I use it now?
>
> Thanks
> Jarek
>
> On Wed, Nov 7, 2018 at 11:07 AM  wrote:
>
>>
>> >
>> > The VM status is:
>> "vm": "up",
>> > "detail": "Up"}
>> >
>>
>> VM is up
>> try to use ssh
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[ovirt-users] Re: corrupted hosted engine

[Jarosław Prokopowski]

Thanks for your responses.

VM was up but network was down in it so I could not use ssh.
I didn't know the trick with  with VNC password. Thanks Simone it may come
handy in the future.

I recreated the self hosted engine and imported the Data storage domain.
Now I have another problem. The VMs are visible in the "VM Import" tab but
there is nothing in "Template import" tab.
When I imported the first VM with "Allow partial" option selected it just
disappeared after the import and I cannot find it.
How can I use it now?

Thanks
Jarek

On Wed, Nov 7, 2018 at 11:07 AM  wrote:

>
> >
> > The VM status is:
> "vm": "up",
> > "detail": "Up"}
> >
>
> VM is up
> try to use ssh
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[ovirt-users] Re: vdsmd.service stuck in state: activating

[Nir Soffer]

On Tue, Nov 6, 2018 at 3:58 PM Giannino Stoppani 
wrote:

> Thank you all for the replies, I'm sticking to bottom posting with 70
> columns wide line, with the exception of log lines.
>
> On Wed, Oct 31, 2018 at 11:48 AM Shani Leviim  wrote:
>
>> I think that this one can help :
>> https://www.ovirt.org/develop/developer-guide/vdsm/installing-vdsm-from-rpm/#installing--configuring-vdsm
>> Make sure you've installed libvirt from the rpm as appeared on the link
>> there.
>>
>
> I've followed your link, from my notes I see I've already tested it in
>  the beginning of my messing. I've set 'ssl = false' in
> /etc/vdsm/vdsm.conf
>

Disabling ssl is not supported configuration. If can be used for debugging
in development environment but it should not be used in production.
This configuration is also not tested, so it is likely to break.

Even if you disable ssl in vdsm, other parts of the system require ssl, like
ovirt-imageio.

Nir
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[ovirt-users] Re: corrupted hosted engine

[vadq-esq]

> 
> The VM status is:
"vm": "up",
> "detail": "Up"}
> 

VM is up
try to use ssh
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[ovirt-users] Re: corrupted hosted engine

[Simone Tiraboschi]

On Tue, Nov 6, 2018 at 4:16 PM Jarosław Prokopowski 
wrote:

> Hi,
>
> It looks like after host restart my hosted engine VM is not accessible any
> more.
> The storage is glusterfs. The gluster volume is healthy.
>
>
> The VM status is:
> {"reason": "failed liveliness check", "health": "bad", "vm": "up",
> "detail": "Up"}
>
> hosted-engine --console
> The engine VM is running on this host
> Connected to domain HostedEngine
> Escape character is ^]
> error: internal error: cannot find character device 
>

The serial console requires a correctly working systemd instance on guest
side to spawn a getty process on tty connections.
VNC console seams more reliable/useful for troubleshooting activities on
systems that fails the boot process.
I'd suggest to try:
  hosted-engine --add-console-password
to force a temporary VNC password and then connect it with a VNC client.


> I tried to boot it from cdrom by changing vm.conf file and I'm not sure if
> the syntax is correct:
> 1. I removed bootOrder:1 from the index:0 device
>
> devices={index:0,iface:virtio,format:raw,address:{type:pci,slot:0x07,bus:0x00,domain:0x,function:0x0},volumeID:8d823e33-4260-4004-a468-cf477d7b1f5b,imageID:41342181-5c8f-4544-878b-44fdaa40dddc,readonly:false,domainID:beb954e7-61b7-4437-bd21-4b268e1a26e5,deviceId:41342181-5c8f-4544-878b-44fdaa40dddc,poolID:----,device:disk,shared:exclusive,propagateErrors:off,type:disk}
>
> 2. in index:2  device I addedd bootOrder:1 and path to the iso image:
>
> devices={index:2,iface:ide,shared:false,readonly:true,bootOrder:1,deviceId:8c3179ac-b322-4f5c-9449-c52e3665e0ae,address:{controller:0,target:0,unit:0,bus:1,type:drive},device:cdrom,path:/opt/iso/CentOS-7-x86_64-DVD-1804.iso,type:disk}
>
>
> The outcome is the same - no console connection.
>
> Now I also get:
>
> hosted-engine --vm-start
> Command VM.getStats with args {'vmID':
> '1e3aa9cf-8708-40a0-bc86-1127df01047a'} failed:
> (code=1, message=Virtual machine does not exist: {'vmId':
> u'1e3aa9cf-8708-40a0-bc86-1127df01047a'})
>
> Unfortunately I do not have any backup.  Is there a way to redeploy hosted
> engine and import current configuration or any other way to fix it?
>

My first advice is to try fixing it via VNC connection.
If not feasible, we now have an ansible procedure to automatically redeploy
hosted-engine restoring a backup on the fly but you still need a backup
took with engine-backup.
Last option is to deploy a new engine instance; shutdown all the VMs at
guest level and try importing other storage domains from the new engine.



>
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[ovirt-users] set up ovirt 4.2 hyperconverged with glusterfs "storage network" over infiniband

[Mike Lykov]

Hi All!

I'm try to set up last ovirt version : ovirt-release42-pre.rpm 
repository (because bug 
https://bugzilla.redhat.com/show_bug.cgi?id=1637468 , for example  - 
it's not fixed in release42 stable)


Then, I install these (and many deps) rpms:
ovirt-hosted-engine-setup-2.2.30-1.el7.noarch
ovirt-engine-appliance-4.2-20181026.1.el7.noarch
vdsm-4.20.43-1.el7.x86_64
vdsm-gluster-4.20.43-1.el7.x86_64
vdsm-network-4.20.43-1.el7.x86_64
All from that repository, and use webui installer for create glusterfs 
volumes (default suggested engine, data, vmstore) and then install 
hosted engine on that "engine" volume.


But in my case i try to setup additional "storage network" (for example, 
as described there: 
https://ovirt.org/develop/release-management/features/gluster/select-network-for-gluster/ 
)
These screenshots are too old, and in 4.2 UI changed as I see, but idea 
are same.


I have two interface on each host: one ethernet (enp59s0f0 with address 
from 172.16.10.0/24 with default gateway) and one "Infiniband" (no 
default gateway, only between cluster nodes, no routing, no external 
access).  Really it is Intel Omni-path fabric :

---
[root@ovirtnode1 log]# hfi1_control -i
Driver Version: 10.8-0
Opa Version: 10.8.0.0.204
0: BoardId: Intel Corporation Omni-Path HFI Silicon 100 Series [integrated]
0,1: Status: 5: LinkUp 4: ACTIVE
-

It looks like IP-over-IB interface:
6: ib0:  mtu 65520 qdisc pfifo_fast 
state UP group default qlen 256
link/infiniband 
80:00:00:02:fe:80:00:00:00:00:00:00:00:11:75:09:01:1a:ee:ea brd 
00:ff:ff:ff:ff:12:40:1b:80:01:00:00:00:00:00:00:ff:ff:ff:ff

inet 172.16.100.1/24 brd 172.16.100.255 scope global noprefixroute ib0
   valid_lft forever preferred_lft forever
It has this properties in ifcfg-ib0 file:
CONNECTED_MODE=yes
MTU=65520

All IP-s on that interfaces pair have DNS records on external DNS:
ethernet (management network) has ovirtnode{N} names and infiniband 
(storage network) has an ovirtstor{N} names.


During webui glusterfs setup I used ovirtstor host names, trusted pool 
created:

5a9a0a5f-12f4-48b1-bfbe-24c172adc65covirtstor5.miac Connected
41350da9-c944-41c5-afdc-46ff51ab93f6ovirtstor6.miac Connected
0f50175e-7e47-4839-99c7-c7ced21f090clocalhost   Connected

Then I log in to web administration console and add two other hosts by 
their names



Name Hostname/IP Cluster Data Center Status SPM

ovirtnode1 ovirtnode1 Default Default Up SPM
ovirtnode5 ovirtnode5 Default Default Up Normal

For this setup I have some questions:

1. Where is a webui place when I can configure that i want to use 
"storage network" ?
I try to create second network (network->networks->new), but vdsm 
overwrite the ifcfg-ib0 file without that properties, as it is "like 
ethernet" interface:


Generated by VDSM version 4.20.43-1.el7
DEVICE=ib0
ONBOOT=yes
IPADDR=172.16.100.5
NETMASK=255.255.255.0
BOOTPROTO=none
MTU=65520
DEFROUTE=no
NM_CONTROLLED=no
IPV6INIT=no

MTU i entered by hand in General->MTU-Custom field, but:
It cannot be set without "CONNECTED_MODE=yes" property, and now in 
networks->"storage"->hosts it always show as "out-of-sync". "Custom 
properties" are greyed and not available.


2. If I use checkbox "VM network" when create network and then "setup 
host networks" with this network for ib0 interface - all engine hangs. I 
think it's because it try to bridge infiniband interface with other, and 
that cannot done (i see only "1 task running" that never ends and no 
other interface can show any details)


3. Also ovirt try to start send LLDP TLVs on interface ib0, but it 
cannot be done:
Nov  6 17:30:01 ovirtnode5 systemd: Starting Link Layer Discovery 
Protocol Agent Daemon
Nov  6 17:30:01 ovirtnode5 kernel: bnx2x: 
[bnx2x_dcbnl_set_dcbx:2383(enp59s0f0)]Requested DCBX mode 5 is beyond 
advertised capabilities

Nov  6 17:30:02 ovirtnode5 systemd: Started /sbin/ifup ib0.
Nov  6 17:30:02 ovirtnode5 systemd: Starting /sbin/ifup ib0.
Nov  6 17:30:02 ovirtnode5 kernel: IPv6: ADDRCONF(NETDEV_UP): ib0: link 
is not ready
Nov  6 17:30:02 ovirtnode5 NetworkManager[1650]:  
[1541511002.9642] device (ib0): carrier: link connected
Nov  6 17:30:02 ovirtnode5 kernel: IPv6: ADDRCONF(NETDEV_CHANGE): ib0: 
link becomes ready
Nov  6 17:30:02 ovirtnode5 lldpad: setsockopt nearest_bridge: Invalid 
argument
Nov  6 17:30:41 ovirtnode5 vdsm[127585]: ERROR Internal server 
error#012Traceback (most recent call last):#012  File 
"/usr/lib/python2.7/site-packages/yajsonrpc/__init__.py", lin
e 606, in _handle_request#012res = method(**params)#012  File 
"/usr/lib/python2.7/site-packages/vdsm/rpc/Bridge.py", line 193, in 
_dynamicMethod#012result = fn(*methodArg
s)#012  File "/usr/lib/python2.7/site-packages/vdsm/API.py", line 1561, 
in getLldp#012info=supervdsm.getProxy().get_lldp_info(filter))#012 
File "/usr/lib/python2.7/site-pack
ages/vdsm/common/supervdsm.py", line 55, in __call__#012return 
callMethod()#012  File

[ovirt-users] Reminder: oVirt conference in Milan next week

[Sandro Bonazzola]

Just a reminder we'll have an oVirt conference (presentation will be in
Italian) in Milan next week, a good chance for meeting developers and
users, exchange experiences, and learn about oVirt.
More info at: http://www.ovirt-italia.it/2018/10/ovirt-conference-2018.html

Thanks,
-- 

SANDRO BONAZZOLA

MANAGER, SOFTWARE ENGINEERING, EMEA R&D RHV

Red Hat EMEA 

sbona...@redhat.com

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[ovirt-users] Re: non-ovirt node as gluster node

[Sandro Bonazzola]

Il giorno mar 6 nov 2018 alle ore 17:27 Simon Coter 
ha scritto:

> Quick question on this:
>
> is there a solution/procedure to get from a standard installation to a
> hyper converged one ?
> Like if I have 3 servers with local-storage and one external engine
> managing all of them; is there a step-by-step procedure to move to hyper
> converged ?
>

Adding Sahina


>
> Simon
>
> On Nov 6, 2018, at 1:47 PM, Jayme  wrote:
>
> Tony, is there a reason why you wouldn't just do a three more hyper
> converged setup with self hosted engine?  This is the best option for a
> three server setup imo
>
> On Tue, Nov 6, 2018, 8:37 AM Tony Brian Albers 
>> Hi guys,
>>
>> I have 3 machines that I'd like to test oVirt/gluster on.
>>
>> The idea is that I want two of them to be oVirt nodes and the third to
>> run the oVirt engine.
>>
>> They all have 8 hdd's, and I'd like to use these in gluster for storing
>> the vm images. (on all 3 machines)
>>
>> So,
>> machine1 is a gluster server with oVirt engine installed
>> machine2 is a gluster server and oVirt node
>> machine3 is a gluster server and oVirt node
>>
>> Is this doable?
>>
>> TIA,
>>
>> /tony
>>
>>
>> --
>> Tony Albers
>> Systems Architect
>> Systems Director, National Cultural Heritage Cluster
>> Royal Danish Library, Victor Albecks Vej 1, 8000 Aarhus C, Denmark.
>> Tel: +45 2566 2383 / +45 8946 2316
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>>
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>


-- 

SANDRO BONAZZOLA

MANAGER, SOFTWARE ENGINEERING, EMEA R&D RHV

Red Hat EMEA 

sbona...@redhat.com

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