Ovirt 4.4 ilo_ssh version HP ILO3. ERROR: Unable to connect/login to fencing device
by melnyksergii＠gmail.com
Dears,
I have a 3 nodes with HP blade servers G7 and ILO3. ILO3 with the latest firmware 1.93 from Aug 07 2020.
I'm try to migrate from Ovirt 4.3 to 4.4 with Centos 8, but I had a problem with setup ssh ilo fence on this nodes. In Ovirt 4.3 with Centos 7 all is works.
When I try to Test fence, I see ERROR: Unable to connect/login to fencing device.
When I try to use /usr/sbin/fence_ilo_ssh I see the same error.
So, I know where is a problem. The problem in an old ssh security keys HostKeyAlgorithms=+ssh-dss.
When I add to /root/.ssh/config some exclude for use HostKeyAlgorithms=+ssh-dss I can connect to ilo over ssh from root with:
/usr/sbin/fence_ilo_ssh -a 10.0.11.157 -l user -p passwordh -x -u 22 --login-timeout=10 -o status and see:
Status: ON
But when I try again setup ilo_ssh fence in Ovirt-engine UI I still have the same ERROR: Unable to connect/login to fencing device.
How can I solve this problem in Ovirt?
Thanks
4 years, 1 month
HCI with 5 node quest
by simon＠justconnect.ie
I have a 3 node HCI setup with 2 Replica 3 volumes using nodes 1, 2 & 3 and have added 2 additional Compute nodes to this Cluster.
What is stopping me from adding nodes 4 & 5 as Gluster Peers and creating a glusterfs Replica 3 Volume using nodes 3, 4 & 5?
Shimme
4 years, 1 month
ovirt glusterfs
by garcialiang.anne＠gmail.com
Hello,
I've some problem with Hyperconverged Configure Gluster storage and oVirt hosted engine. I've the message error:
failed: [node2.xxxxx.fr] (item={u'key': u'gluster_vg_sdb', u'value': [{u'vgname': u'gluster_vg_sdb', u'pvname': u'/dev/sdb'}]}) => {"ansible_loop_var": "item", "changed": false, "err": " Device /dev/sdb excluded by a filter.\n", "item": {"key": "gluster_vg_sdb", "value": [{"pvname": "/dev/sdb", "vgname": "gluster_vg_sdb"}]}, "msg": "Creating physical volume '/dev/sdb' failed", "rc": 5}
Could you help me for know where is the problem, please?
Thanks,
Anne Garcia
4 years, 1 month
POWER9 (ppc64le) Support on oVirt 4.4.1
by Vinícius Ferrão
Hello, I was using oVirt 4.3.10 with IBM AC922 (POWER9 / ppc64le) without any issues.
Since I’ve moved to 4.4.1 I can’t add the AC922 machine to the engine anymore, it complains with the following error:
The host CPU does not match the Cluster CPU type and is running in degraded mode. It is missing the following CPU flags: model_POWER9, powernv.
Any ideia of what’s may be happening? The engine runs on x86_64, and I was using this way on 4.3.10.
Machine info:
timebase : 512000000
platform : PowerNV
model : 8335-GTH
machine : PowerNV 8335-GTH
firmware : OPAL
MMU : Radix
Thanks,
4 years, 1 month
Re: Migrate hosted-engine to new storage domain
by Yedidyah Bar David
On Tue, Nov 3, 2020 at 7:07 AM Matthew.Stier(a)fujitsu.com
<Matthew.Stier(a)fujitsu.com> wrote:
>
> I’ve migrated my iSCSI storage to a new array, and the only thing remaining is to migrate the hosted-engine.
>
>
>
> Any directions on how I should proceed. I understand that I will need to back-up the existing, create a new hosted-engine on the new storage, specifying the backup a reference.
>
>
>
> I just would like to see a step-by-step, so I know I am doing everything, and in the right order.
Generally speaking, you should follow the hosted-engine backup and
restore flows/documents.
I strongly suggest to test this first on a test machine before production.
You can take a backup without downtime.
Restore on some machine (can be a VM, with nested-kvm) that has no
access to your production storage and hosts (to make sure the restored
engine won't start managing them/competing with the production one).
See that all looks good. Then plan production...
Good luck and best regards,
--
Didi
4 years, 1 month
Migrate hosted-engine to new storage domain
by Matthew.Stier＠fujitsu.com
I've migrated my iSCSI storage to a new array, and the only thing remaining is to migrate the hosted-engine.
Any directions on how I should proceed. I understand that I will need to back-up the existing, create a new hosted-engine on the new storage, specifying the backup a reference.
I just would like to see a step-by-step, so I know I am doing everything, and in the right order.
4 years, 1 month
Select host for image upload
by C Williams
Hello,
I am having problems selecting the host that I want to use for .iso and
other image uploads via the oVirt Web Console. I have 20+ servers of
varying speeds.
Somehow oVirt keeps wanting to select my oldest and slowest system to use
for image uploads.
Please Help !
Thank You !
C Williams
4 years, 1 month
Q: Failed creating snapshot
by Andrei Verovski
Hi,
I have oVirt 4.4 with nodes 4.2.8
Attempt to create snapshot failed with:
EventID 10802 VDSM node11 command SnapshotVDS failed: Message timeout can be caused by communication issues.
Event ID 2022 Add-disk operation failed to complete.
However, snapshot is on disk since VM now takes 1200GB instead of 500.
Yes snapshot list in VM details is empty.
How to recover disk space occupied by unsuccessful snapshot ?
I looked at /vmraid/nfs/disks/xxxx-xxxx-xxx/images
and there are no distinctive files which I can identify as snapshot.
Thanks in advance.
Andrei
4 years, 1 month
ovirt installation with proxy or katello
by Markus Schaufler
Hi,
in our environment we need to either specify proxy settings or use foreman/katello repositories.
I'd like to test both ways but the installer with the ansible scripts behind don't seem to use the hosts settings.
Where do I have to adopt the install scripts and will there be in future a GUI option to specify those things?
Can't understand why disconnected environments or environments with proxies aren't better taken into consideration...?
Thanks in advance,
Markus
4 years, 1 month
Question about OVN MTU
by Strahil Nikolov
Hello All,
I would like to learn more about OVN and especially the maximum MTU that I can use in my environment.
Current Setup 4.3.10
Network was created via UI -> MTU Custom -> 8976 -> Create on External Provider -> Connect to Physical Network
So my physical connection is MTU 9000 and I have read that Geneve uses 24 bits (maybe that's wrong ?) , thus I have reduced the MTU to 8976.
I did some testing on the VMs and ping with payload of '8914' was the maximum I could pass without fragmenting and thus the MTU on the VMs was set to 8942.
Did I correctly configure the test network's MTU and am I understanding it correctly that we need extra 34 bits inside the network for encapsulation ?
I have checked https://www.ovirt.org/develop/release-management/features/network... but I don't see any refference how to calculate the max MTU.
Best Regards,
Strahil Nikolov
4 years, 1 month
