oVirt networks
by Enrico Becchetti
Dear all,
Ineed your help to understand how to configure the network of a new
oVirt cluster.
Mynew system will have a 4.3 engine thatruns in a virtual machine, andsome
Dell R7525 AMD EPYC hypervisors, eachholding two 4-port PCI network cards.
These servers will have node-ovirt image again in version 4.3.
As for the network, there are two HPE Aruba 2540G, non-stackable, with
24 1Gbs ports
and 2 10Gbs uplinks to the star center.
This is a simplified scheme:
My goal is to make the most of the server's 8 ethernet interfaces to have
both reliability and maximum possible throughput.
This cluster will have two virtual networks, one forovirt management and
one for
the traffic of individual virtual machines.
With that said here's what my idea is. I would like to have two links
aggregated by 4Gbs,
one for ovrtmgt and the other for vmnet.
With the ovirt web interface I can createan active-passive "Mode 1"
bond, but this
won'tallow me to go beyond 1Gbs. Alternatively I could create a "Mode 4"
bond
802.3ad but unfortunately the switches are not stacked and therefore not
even
this solution applies.
This is an example with active passive configuration:
Can you tell me if ovirt can generate//nested bonds? Or do you have
other solutions ?
Thanks a lot !
Best Regards
Enrico
--
_______________________________________________________________________
Enrico Becchetti Servizio di Calcolo e Reti
Istituto Nazionale di Fisica Nucleare - Sezione di Perugia
Via Pascoli,c/o Dipartimento di Fisica 06123 Perugia (ITALY)
Phone:+39 075 5852777 Skype:enrico_becchetti
Mail: Enrico.Becchetti<at>pg.infn.it
Pagina web personale: https://www.pg.infn.it/home/enrico-becchetti/
______________________________________________________________________
2 weeks, 3 days
boot from cdrom & error code 0005
by edp＠maddalena.it
Hi.
I have created a new storage domain (data domain, storage type nfs) to use it to upload iso images.
I have so uploaded a new iso and then attach the iso to a new vm.
But when I try to boot the vm I obtain this error:
booting from dvd/cd...
boot failed: could not read from cdrom (code 0005)
no bootable device
The iso file has been uploaded with success in the data storage domain and so the vm lets my attach the iso to the vm in the boot settings.
Can you help me?
Thank you
3 weeks, 3 days
VM Migration Failed
by KSNull Zero
Running oVirt 4.4.5
VM cannot migrate between hosts.
vdsm.log contains the following error:
libvirt.libvirtError: operation failed: Failed to connect to remote libvirt URI qemu+tls://ovhost01.local/system: authentication failed: Failed to verify peer's certificate
Certificates on hosts was renewed some time ago. How this issue can be fixed ?
Thank you.
2 months
How to re-enroll (or renew) host certificates for a single-host hosted-engine deployment?
by Derek Atkins
Hi,
I've got a single-host hosted-engine deployment that I originally
installed with 4.0 and have upgraded over the years to 4.3.10. I and some
of my users have upgraded remote-viewer and now I get an error when I try
to view the console of my VMs:
(remote-viewer:8252): Spice-WARNING **: 11:30:41.806:
../subprojects/spice-common/common/ssl_verify.c:477:openssl_verify: Error
in server certificate verification: CA signature digest algorithm too weak
(num=68:depth0:/O=<My Org Name>/CN=<Host's Name>)
I am 99.99% sure this is because the old certs use SHA1.
I reran engine-setup on the engine and it asked me if I wanted to renew
the PKI, and I answered yes. This replaced many[1] of the certificates in
/etc/pki/ovirt-engine/certs on the engine, but it did not update the
Host's certificate.
All the documentation I've seen says that to refresh this certificate I
need to put the host into maintenance mode and then re-enroll.. However I
cannot do that, because this is a single-host system so I cannot put the
host in local mode -- there is no place to migrate the VMs (let alone the
Engine VM).
So.... Is there a command-line way to re-enroll manually and update the
host certs? Or some other way to get all the leftover certs renewed?
Thanks,
-derek
[1] Not only did it not update the Host's cert, it did not update any of
the vmconsole-proxy certs, nor the certs in /etc/pki/ovirt-vmconsole/, and
obviously nothing in /etc/pki/ on the host itself.
--
Derek Atkins 617-623-3745
derek(a)ihtfp.com www.ihtfp.com
Computer and Internet Security Consultant
2 months, 2 weeks
4.5.4 with Ceph only storage
by Maurice Burrows
Hey ... A long story short ... I have an existing Red Hat Virt / Gluster hyperconverged solution that I am moving away from.
I have an existing Ceph cluster that I primarily use for OpenStack and a small requirement for S3 via RGW.
I'm planning to build a new oVirt 4.5.4 cluster on RHEL9 using Ceph for all storage requirements. I've read many online articles on oVirt and Ceph, and they all seem to use the Ceph iSCSI gateway, which is now in maintenance, so I'm not real keen to commit to iSCSI.
So my question is, IS there any reason I cannot use CephFS for both hosted-engine and as a data storage domain?
I'm currently running Ceph Pacific FWIW.
Cheers
2 months, 3 weeks
i can't access console with noVNC or VNC client(console.vv)
by z84614242＠163.com
i installed the ovirt 4.5 engine on centos stream 9 and add a ovirt node(ovirt node 4.5 iso) to this engine. i am going to run my vm on this node. i follow the instruction to create the data center, the cluster, the storage domain, upload the image. everything is fine. and after i create a vm with ubuntu image attach, i found that i can't visit the console. when i using the noVNC, it says "Something went wrong, connection is closed", when i visit vnc with virt-viewver, is says "Failed to complete handshake Error in the pull function". i try to change the console type to Bochs one and it appear the same. i change to QXL mode and the vm can't start any more. i check the log, it says "unsupported configuration: domain configuration does not support video model 'qxl'".
so now i can't visit my vm by anyway. i deploy the engine follow the official instruction and keep mostly option default but why still have this issue. why the noVNC says "Something went wrong" instead of telling me what is actually wrong
4 months
Changing disk QoS causes segfault with IO-Threads enabled (oVirt 4.3.0.4-1.el7)
by jloh＠squiz.net
We recently upgraded to 4.3.0 and have found that when changing disk QoS settings on VMs whilst IO-Threads is enabled causes them to segfault and the VM to reboot. We've been able to replicate this across several VMs. VMs with IO-Threads disabled/turned off do not segfault when changing the QoS.
Mar 1 11:49:06 srvXX kernel: IO iothread1[30468]: segfault at fffffffffffffff8 ip 0000557649f2bd24 sp 00007f80de832f60 error 5 in qemu-kvm[5576498dd000+a03000]
Mar 1 11:49:06 srvXX abrt-hook-ccpp: invalid number 'iothread1'
Mar 1 11:49:11 srvXX libvirtd: 2019-03-01 00:49:11.116+0000: 13365: error : qemuMonitorIORead:609 : Unable to read from monitor: Connection reset by peer
Happy to supply some more logs to someone if they'll help but just wondering whether anyone else has experienced this or knows of a current fix other than turning io-threads off.
Cheers.
4 months, 3 weeks
Deploy oVirt Engine fail behind proxy
by Matteo Bonardi
Hi,
I am trying to deploy the ovirt engine following self-hosted engine installation procedure on documentation.
Deployment servers are behind a proxy and I have set it in environment and in yum.conf before run deploy.
Deploy fails because ovirt engine vm cannot resolve AppStream repository url:
[ INFO ] TASK [ovirt.engine-setup : Install oVirt Engine package]
[ ERROR ] fatal: [localhost -> ovirt-manager.mydomain]: FAILED! => {"changed": false, "msg": "Failed to download metadata for repo 'AppStream': Cannot prepare internal mirrorlist: Curl error (6): Couldn't resolve host name for http://mirrorlist.centos.org/?release=8&arch=x86_64&repo=AppStream&infra=... [Could not resolve host: mirrorlist.centos.org]", "rc": 1, "results": []}
[ ERROR ] Failed to execute stage 'Closing up': Failed executing ansible-playbook
[ INFO ] Stage: Clean up
[ INFO ] Cleaning temporary resources
[ INFO ] TASK [ovirt.hosted_engine_setup : Execute just a specific set of steps]
[ INFO ] ok: [localhost]
[ INFO ] TASK [ovirt.hosted_engine_setup : Force facts gathering]
[ INFO ] ok: [localhost]
[ INFO ] TASK [ovirt.hosted_engine_setup : Fetch logs from the engine VM]
[ INFO ] ok: [localhost]
[ INFO ] TASK [ovirt.hosted_engine_setup : Set destination directory path]
[ INFO ] ok: [localhost]
[ INFO ] TASK [ovirt.hosted_engine_setup : Create destination directory]
[ INFO ] changed: [localhost]
[ INFO ] TASK [ovirt.hosted_engine_setup : include_tasks]
[ INFO ] ok: [localhost]
[ INFO ] TASK [ovirt.hosted_engine_setup : Find the local appliance image]
[ INFO ] ok: [localhost]
[ INFO ] TASK [ovirt.hosted_engine_setup : Set local_vm_disk_path]
[ INFO ] skipping: [localhost]
[ INFO ] TASK [ovirt.hosted_engine_setup : Give the vm time to flush dirty buffers]
[ INFO ] ok: [localhost]
[ INFO ] TASK [ovirt.hosted_engine_setup : Copy engine logs]
[ INFO ] TASK [ovirt.hosted_engine_setup : include_tasks]
[ INFO ] ok: [localhost]
[ INFO ] TASK [ovirt.hosted_engine_setup : Remove local vm dir]
[ INFO ] ok: [localhost]
[ INFO ] TASK [ovirt.hosted_engine_setup : Remove temporary entry in /etc/hosts for the local VM]
[ INFO ] changed: [localhost]
[ INFO ] TASK [ovirt.hosted_engine_setup : Clean local storage pools]
[ INFO ] ok: [localhost]
[ INFO ] TASK [ovirt.hosted_engine_setup : Destroy local storage-pool {{ he_local_vm_dir | basename }}]
[ INFO ] TASK [ovirt.hosted_engine_setup : Undefine local storage-pool {{ he_local_vm_dir | basename }}]
[ INFO ] TASK [ovirt.hosted_engine_setup : Destroy local storage-pool {{ local_vm_disk_path.split('/')[5] }}]
[ INFO ] TASK [ovirt.hosted_engine_setup : Undefine local storage-pool {{ local_vm_disk_path.split('/')[5] }}]
[ INFO ] Generating answer file '/var/lib/ovirt-hosted-engine-setup/answers/answers-20201109165237.conf'
[ INFO ] Stage: Pre-termination
[ INFO ] Stage: Termination
[ ERROR ] Hosted Engine deployment failed: please check the logs for the issue, fix accordingly or re-deploy from scratch.
Log file is located at /var/log/ovirt-hosted-engine-setup/ovirt-hosted-engine-setup-20201109164244-b3e8sd.log
How I can set proxy for the engine vm?
Ovirt version:
[root@myhost ~]# rpm -qa | grep ovirt-engine-appliance
ovirt-engine-appliance-4.4-20200916125954.1.el8.x86_64
[root@myhost ~]# rpm -qa | grep ovirt-hosted-engine-setup
ovirt-hosted-engine-setup-2.4.6-1.el8.noarch
OS version:
[root@myhost ~]# cat /etc/centos-release
CentOS Linux release 8.2.2004 (Core)
[root@myhost ~]# uname -a
Linux myhost.mydomain 4.18.0-193.28.1.el8_2.x86_64 #1 SMP Thu Oct 22 00:20:22 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux
Thanks for the help.
Regards,
Matteo
5 months, 3 weeks
The oVirt Counter
by Sandro Bonazzola
Hi, for those who remember the Linux Counter project, if you'd like other
to know you're using oVirt and know some details about your deployment,
here's a way to count you in:
https://ovirt.org/community/ovirt-counter.html
Enjoy!
--
Sandro Bonazzola
MANAGER, SOFTWARE ENGINEERING, EMEA R&D PERFORMANCE & SCALE
Red Hat EMEA <https://www.redhat.com/>
sbonazzo(a)redhat.com
<https://www.redhat.com/>
*Red Hat respects your work life balance. Therefore there is no need to
answer this email out of your office hours.*
6 months, 3 weeks
Cannot restart ovirt after massive failure.
by Gilboa Davara
Hello all,
During the night, one of my (smaller) setups, a single node self hosted
engine (localhost NFS) crashed due to what-looks-like a massive disk
failure (Software RAID6, with 10 drives + spare).
After a reboot, I let the RAID resync with a fresh drive) and went on to
start oVirt.
However, no such luck.
Two issues:
1. ovirt-ha-broker fails due to broken hosted engine state (log attached).
2. ovirt-ha-agent fails due to network test (tcp) even though both
remote-host and DNS servers are active. (log attached).
Two questions:
1. Can I somehow force the agent to disable the network liveliness test?
2. Can I somehow force the broker to rebuild / fix the hosted engine state?
- Gilboa
8 months
