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Tutorial: How to Fix Struck Zombie VM Problem
by Andrei Verovski 12 Jun '23

12 Jun '23

Hi, I made short video tutorial on Youtube - how to fix struck zombie VM problem. https://www.youtube.com/watch?v=vm55caHxRj8 with best regards Andrei

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how to expand a arbitrated-distributed-replicated volume
by Hans Kuhl 11 Jun '23

11 Jun '23

Hello all, how can I expand a arbitrated-distributed-replicated volume without adding additional arbiter bricks? my current gluster config is: Volume Name: data Type: Distributed-Replicate Volume ID: dcf75cf7-1937-4ce9-a7d0-46a56a3be4b4 Status: Started Snapshot Count: 0 Number of Bricks: 3 x (2 + 1) = 9 Transport-type: tcp Bricks: Brick1: gl1.lan:/gluster_bricks/sdc/sdc Brick2: gl2.lan:/gluster_bricks/sdc/sdc Brick3: gl3.lan:/gluster_bricks/sdx/sdx (arbiter) Brick4: gl2.lan:/gluster_bricks/sdd/sdd Brick5: gl3.lan:/gluster_bricks/sdc/sdc Brick6: gl1.lan:/gluster_bricks/sdx/sdx (arbiter) Brick7: gl3.lan:/gluster_bricks/sdd/sdd Brick8: gl1.lan:/gluster_bricks/sdd/sdd Brick9: gl2.lan:/gluster_bricks/sdx/sdx (arbiter)

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Non responsive host (4.3.10)
by Maria Souvalioti 08 Jun '23

08 Jun '23

Hello everyone! Due to a recent major power outage in my area I now have an unresponsive self hosted host in an environment of 3 self hosted hosts. There's one vm stuck on there as well as some metadata I guess from when hosted engine was running there (before the power went down). I'm running 4.3.10 ovirt node with 3 nodes and GlusterFS, no arbiter, and I'm using it to provide services to our clients i.e. DNS, web sites, wikis, ticketing etc. and I cannot shut them down. The ovirt engine is up and running and I can manage all the other VMs that run on the other hosts through the web gui. The unresponsive host replies only to ICMP requests; in every other sense it's dead, no ssh, no gluster bricks, no console, nothing. I tried to place the faulty host in maintenance, using the option to stop glusterd, but wasn't able to as the engine won't let the host go into maintenance mode because it thinks the host has running VMs on it. The host won't go into maintenance even if I chose the "Ignore gluster quorum and self-heal validations" option. I spent last week creating a backup environment were I copied the VMs, to have somewhere to run them in case something goes terribly wrong with the systems or the gluster in the production system. I'm thinking of using the global maintenance mode and then shutting down the engine itself with *hosted-engine --vm-shutdown* and rebooting the affected host. Should I remove the host from the cluster and then re-add it or should I do something else? Thanks for any of your help!

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Renew the engine certificate - egine-setup
by Fabrice Soler 08 Jun '23

08 Jun '23

Hello, We have an standalone engine version 4.3.6 and we try to renew the engine certificate. We have followed the official documentation but the engine-setup never ask us the question "Renew certificate ?" Do you have an idea ? Sincerely, -- Carte de visite DSI-DIT *Fabrice SOLER* Responsable du Département des Infrastructures Techniques (DIT) /Rectorat de la Guadeloupe - BP 480/ 97183 Les Abymes cedex *Téléphone : *0590 47 8321 +590 690 335 564 *Courriel*: www.ac-guadeloupe.fr

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Rename Virtual Machine
by lavi.buchnik＠exlibrisgroup.com 08 Jun '23

08 Jun '23

Hi, We have this scenario: - VM running Centos-7 - VM running Oracle-8 Then, we shutdown and delete Centos-7 VM (verified by API and UI) Then, we rename Oracle-8 VM (via API) to have the name of the old Centos-7 VM and then stop/start Oracle-8 VM. Rename is working and VM is coming up (status is "up" from API and also in the UI). The problem is that Oracle-8 VM is not really up. it is hanging. not replying to PING nor to SSH. Seems like the root cause is this: - Oracle-8 VM name is indeed Centos-7 VM. but its FQDN (seen in UI) is still its Original name. - So when getting both Centos-7 VM name and Oracle-8 VM name status, I get an answer (via API) about both of them: Both reply with "up" I'm using a simple API to rename the VM as followed (vm_name is Oracle-8 VM name, and new_name is Centos-7 VM name): vm_id_obj = self.get_vm_id(vm_name) updated_vm = vm_id_obj.update( vm=types.Vm( name=new_name ) ) Thanks, Lavi

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VM disks Block device
by hemak88＠gmail.com 08 Jun '23

08 Jun '23

LVM is used underneath the storage domain for disk management in kvm cluster on ovirt. VG which is the storage domain is visbile and active in all hosts in the same datacenter on ovirt. But, LV under this vg (that is the virtual disks of vms) is not active and the corresponding block devices of these LVs is not available on all hosts in cluster. I find only the running VMs LVs are active on the corresponding host. Is this a feature? Is it possible to get a corresponding block device and LV on all hosts in cluster?

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Resending with Log: Hosted Engine Deploy Fails at "Waiting for Host to be up"
by Angel, Christopher 07 Jun '23

07 Jun '23

I've installed 3 Ovirt Nodes and am trying to set up the hosted engine. Every time I run it however, it fails at the 'Waiting for host to be up' stage. I've attached the relevant log. -- Christopher Angel, B.Eng, B.Sc Laboratory Systems Analyst, Computer Science Department University of Saskatchewan Christopher.angel(a)usask.ca<mailto:Christopher.angel@usask.ca> 3069661434

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Ovirt Error after creating a VM image
by lavi.buchnik＠exlibrisgroup.com 07 Jun '23

07 Jun '23

Hi, I wrote an automation that provisioning a VM using ovirtsdk4 (we are using Ovirt 4.3). In the last week, we notice that sometimes the VM provisioning is failing with this error: "The response content type 'text/html; charset=iso-8859-1' isn't the expected XML" This error is happening when the automation is creating the VM image and waiting for its status to get change from "image-locked", this to be able to set affinity on it and later to start the new VM. So the error is happening while the image is in "image-locked" state. Can you please let me know why it is happening (note that it is occurring like 1 out of 4 attempts) and how can it get fixed? Thanks, Lavi

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Unable to add more than 16 vCPUs to running VM
by David White 06 Jun '23

06 Jun '23

I have a fully patched / up-to-date engine: Software Version:4.5.4-1.el8 And a fully patched, up-to-date host. [root@cha3-storage dwhite]# yum info ovirt-hostLast metadata expiration check: 1:33:40 ago on Sun 04 Jun 2023 09:28:39 AM EDT. Installed Packages Name : ovirt-host Version : 4.5.0 Release : 3.el8 Architecture : x86_64 Size : 11 k Source : ovirt-host-4.5.0-3.el8.src.rpm Repository : @System From repo : centos-ovirt45 The host has 32GB of RAM, and there's only 1 VM on this host. When I try to add more CPUs to the VM from the manager UI, I get the following error: - The requested number of vCPUs is not available on the host the VM is running on What's going on here, and why can I not add more vCPUs to this VM? Sent with Proton Mail secure email.

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oVirt 4.4 - Integrate event notifications with System Center Operations Manager
by angus＠ajct.uk 02 Jun '23

02 Jun '23

Hello I am looking to integrate oVirt 4.4 event notifications with an incident management tool - M$ System Center Operations Manager. I need to give examples to SCOM of what an unhealthy email looks like and what a recover/healthy email looks like for each event I want it to manage. Is there a way of triggering sample notifications (something failed/something recovered) for events or perhaps I can see the email templates used somewhere? (I did try a grep -Hr on the engine VM for "alertMessage" and "resolveMessage" for a VM migration notification but only found an entry in the in the notifier log. Thanks Angus

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