virt July 2018

virt@lists.centos.org

7 participants
5 discussions

Network Problem KVM
by Günther J. Niederwimmer 21 Jul '18

21 Jul '18

Hello List, CentOS 7.5 I have a question about a KVM problem (??) with my Servers, I hope any have a answer. ;-) My situation is, I have three server two identical motherboards and one 19" Server. The problem is the configuration with the Bridge Interface! On my motherboards I have configured a NIC for bridge, on the 19" Server I have the virbr0 from KVM configured. All Server (motherboards) have a Intel I350 Ethernet Controller on Board, I configured this NIC's with the "igb" driver and in the KVM clients with with the "hostdev" option this two Interfaces are starting always correct. But the "BRIGED" interfaces is the third Interface on all "servers", is starting only sometimes :-(. I have to check all clients after a kernel update for correct networking? The only way to have again correct working clients is to reboot or stop and start the clients sometimes three or four times and again..... I have on all "Servers" 4-6 KVM Clients and this is a BIG problem for me! Why is this possible (?), is my configuration broken or is a driver broken or....... thanks for a answer and help is possible, -- mit freundlichen Grüssen / best regards, Günther J. Niederwimmer

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Mitel only supported VMware virtualization platform for some CentOS servers based products
by Jean-Marc Liger 16 Jul '18

16 Jul '18

Hi, Some Mitel products, which are CentOS 6.x or 7.x servers based with some telephony services added, are only supported on VMware virtualisation platform, even all if theses CentOS guests are certified on last CentOS/Redhat Virtualization or Microsoft Hyper V platforms. So, at he moment we have three bad choises : - Migrate part of our virtualization services from KVM/libvirt to VMware ; - Install Mitel concerned product on a physical server ; - Stay on KVM/libvirt and lose Mitel support for this product. I'm seeking for technical/legal arguments which could help us to stay on KVM/libvirt without losing Mitel support. Regards, -- *Jean-Marc LIGER Ingénieur Systèmes et Réseaux de Communication * FACULTÉ DE MÉDECINE Direction Technique, Informatique, Réseaux et Multimédia 15 rue de l’École de Médecine – 75270 Paris cedex 06 Tél : +33 (0)1 76 53 00 71

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AWS c5d.9/18xlarge instances not supported
by Jens-Uwe Schluessler 14 Jul '18

14 Jul '18

Hi, why are larger AWS instances c5d.9xlarge and c5d.18xlarge (NVMe SSD attached) NOT supported by Centos7 AMI, while smaller instances (e.g. c5d.4xlarge) are supported? Also regular c5.9/18xlarge are supported. Thanks, Jens-Uwe Jens-Uwe Schlüßler

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Remove my userid from the listing
by Robert Crook 13 Jul '18

13 Jul '18

Good Day...Please remove my userid from the CentOS help group listing.I am not qualified to answer questions, as I've not used CentOS for several years.Thank you very muchRobert G Crook

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VFIO console
by admin＠siegel-tech.net 11 Jul '18

11 Jul '18

Hello For the past three years I have my computer been set with with multiple virtual machine assigned to a GPU using QEMU/KVM and VFIO. For the past year CentOS as been the host computer, it has been reliable. This summer I switch to the Centos Enterprise package, it been work for several weeks until Friday, sometime over the weekend the console portion of the boot process does not display. I have one Windows 10 virtual machine book, but the EFI boot screen does not display and the Windows circle do not dance on the screen. I am unable able to boot my other virtual machines, they get stuck the monitor just flash on and off. I performed a major upgrade on the 4th of July it work through Friday. I have used the history command in yum to undo the update the problem persisted. I have qemu-kvm-ev-2.10.0-21.el7_5.4.1.x86_64 and libvirt-3.9.0-14.el7_5.6.x86_64. I can post a configuration if you think it will help, I have regenerated a xml file from partially working Windows 10 machine. What has changed in the last week. I have tried many things but not sure were to go from here. Thank you Aaron

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virt July 2018