- Users - oVirt List Archives

Ansible example for creating VM from qcow2 image?
by m.skrzetuski＠gmail.com 07 Jan '20

07 Jan '20

Hello there, anyone Ansible examples on how to create a VM (including cloud init) from a previously uploaded qcow2 file (using the ovirt_vm module from https://docs.ansible.com/ansible/latest/modules/ovirt_vm_module.html#ovirt-… I simply cannot wrap my head around it. Do you create a disk from the qcow2 and attach it to the VM? Or do you mount it as ISO in CDROM of the VM and the automate the installation? What are the exact steps? Do I have to use templates (I don't want to)? Kind regards Skrzetuski

2 1

Deleted gluster volume
by Christian Reiss 07 Jan '20

07 Jan '20

Hey folks, I accidently deleted a volume in the oVirt Engine, Storage -> Volumes. The gluster is still up on all three nodes, but the ovirt engine refuses to re-scan it. Or to re-introduce it. How could I add the still valid and working (but deleted in the ovirt engine) gluster volume back to the engine? It's a test setup. I am trying to break & repair things. Still I am unable to find any documentation on this "use case". Thanks! -- with kind regards, mit freundlichen Gruessen, Christian Reiss

2 2

strength of oVirt compared to others???
by yam yam 07 Jan '20

07 Jan '20

Hi everyone! I want to know clear strength of oVirt compared to openstack and kubevirt(VM add-on for k8s). compared OpenStack, I heard oVirt is specialized in long-lasting traditional apps requiring robust and resilient infra while OpenStack is cloud solution. so, backend is suited for oVirt and frontend like web server is suited for OpenStack. but I 'm wondering why these traditional apps are not suited for OpenStack because I think OpenStack encompasses functions(live migration, scale-up, snapshot, ...) oVirt provides. I want to know which features in oVirt make such difference. compared to kubevirt, it seems more difficult to find strength in that both are designed to run legacy apps. under mixed environment, it seems like rather kubevirt has more benefits :'(

1 0

Question about HCI gluster_inventory.yml
by John Call 07 Jan '20

07 Jan '20

Hi ovirt-users, I'm trying to automate my HCI deployment, but can't figure out how to specify multiple network interfaces in gluster_inventory.yml. My servers have two NICs, one for ovirtmgmt (and everything else), and the other is just for Gluster. How should I populate the inventory/vars file? Is this correct? [root@rhhi1 hc-ansible-deployment]# pwd /etc/ansible/roles/gluster.ansible/playbooks/hc-ansible-deployment [root@rhhi1 hc-ansible-deployment]# cat gluster_inventory.yml --lots of stuff omitted-- hc_nodes: hosts: host1-STORAGE-fqdn: host2-STORAGE-fqdn: host3-STORAGE-fqdn: vars: cluster_nodes: - host1-ovirtmgmt-fqdn - host2-ovirtmgmt-fqdn - host3-ovirtmgmt-fqdn gluster_features_hci_cluster: "{{ cluster_nodes }}" gluster: host2-STORAGE-fqdn: host3-STORAGE-fqdn: storage_domains: [{"name":"data","host":"host1-STORAGE-fqdn","address":"host1-STORAGE-fqdn","path":"/data","mount_options":"backup-volfile-servers=host2-STORAGE-fqdn:host3-STORAGE-fqdn"},{"name":"vmstore","host":"host1-STORAGE-fqdn","address":"host1-STORAGE-fqdn","path":"/vmstore","mount_options":"backup-volfile-servers=host2-STORAGE-fqdn:host3-STORAGE-fqdn"}]

2 3

Confusion about storage domain ISO. How do I provision VMs?
by m.skrzetuski＠gmail.com 06 Jan '20

06 Jan '20

Hello there, I'm a bit confused about provisioning VMs (with Ansible). At first I wanted to setup a VM manually over the web UI, just to see how it works. I was not able to upload ISO files with cloud images to a data domain but I was able to upload to ISO domain. However I read that ISO domains are deprecated (see https://access.redhat.com/documentation/en-us/red_hat_virtualization/4.3/ht…) So what is the workflow/process of provisioning VMs from cloud images with cloud init? Where do I store my ISOs? Kind regards skrzetuski

3 9

VM auto start with Host?
by m.skrzetuski＠gmail.com 06 Jan '20

06 Jan '20

Hello everyone, please tell me it is possible to auto start all VMs together with a Host. How do I configure this? I found some RFEs and Bugzilla Bugs and Redhat engineers promising this but no docs about how to enable it. Kind regards Skrzetuski

2 3

Re: null
by Strahil 06 Jan '20

06 Jan '20

I do use automatic migration policy. The main question you have to solve is: 1. Why the nodes became 'Non-operational' .Usually this happens when the management interface (in your case HoatedEngine VM) could not reach the nodes over the management network. By default, management is going over the ovirtmgmt network. I guess you have created the new network. Marked that new network as management network and then the switch was off , causing 'Non-Operational state'. 2. Migrating VMs is usually a safe approach, but this behavior is quite strange. If a node ia Non-operational -> there could be no successful migration. 3. Some of the VMs got paused due to storage issue. Are you using GlusterFS, NFS or iSCSI ? If yes, you need to clarify why you lost your storage. I guess for now you can mark each VM to be migrated only manually (VM -> Edit) and if they are critical VMs , set a high Availability from each VM's Edit options. In such case, if a node fails, the VMs will be restarted on another node. 4. Have you setup node fencing ? For example APC, iLo, iDRAC and other fencing mechanisms can allow the HostedEngine use another Host as fencing proxy and to reset the problematic Hypervisor. P.S.: You can define the following alias in '~/.bashrc' : alias virsh='virsh -c qemu:///system?authfile=/etc/ovirt-hosted-engine/virsh_auth.conf' Then you can verify your VMs even when a HostedEngine is down: 'virsh list --all' Best Regards, Strahil NikolovOn Dec 27, 2019 08:40, zhouhao(a)vip.friendtimes.net wrote: > > I had a crash yesterday in my ovirt cluster, which is made up of 3 nodes. > > I just tried to add a new network, but the whole cluster crashed > > I added a new network to my cluster, but while I was debugging the newswitch, when the switch was poweroff, the node detected the network card status down and then moved to Non-Operational state. > > > > At this time all of 3 nodes moved to Non-Operational state. > > All virtual machines have started automatic migration,When I received the alert email, all virtual machines were suspended > > > > > > In 15 minutes my newswitch were power up again.The 3 ovirt-nodes become active again, but many virtual machines become unresponsive or suspended due to forced migration, and only a few virtual machines are pulled up again due to cancelled migration > > After I tried to terminate the migration tasks and restart ovirt-engine service, I was still unable to restore most of the virtual machines, so I had to restart 3 ovirt-nodes to restore my virtual machine > > I didn't recover all the virtual machines until an hour later > > > Then I modify my migration policy to " Do Not Migrate Virtual Machines" > > Which migration Policy do you recommend? > > I'm afraid to use cluster... > > ________________________________ > zhouhao(a)vip.friendtimes.net

2 1

Re: Cluster CPU type update
by Strahil 06 Jan '20

06 Jan '20

Just a question from curiosity. Can't we just define second cluster and move each VM from old cluster to the new one ? Best Regards, Strahil NikkolovOn Jan 5, 2020 12:29, Eli Mesika <emesika(a)redhat.com> wrote: > > This is the right way to do that IMO > > On Sat, Jan 4, 2020 at 3:09 AM Morris, Roy <roy.morris(a)ventura.org> wrote: >> >> Hello, >> >> I'm running a 4.3 cluster with 56 VMs all set to default cluster and the cluster itself is set to Intel Westmere Family. I am getting a new server and retiring 3 old ones which brings me to my question. >> >> When implementing the new host into the cluster and retiring the older hosts. I want to change the CPU type setting in the cluster default to Broadwell which is what my new 3 host cluster will be. To make this change, I assume the process would be to turn off all VMs, set cluster cpu type to broadwell, then turn on VMs to get the new CPU flags? >> >> Just wanted to reach out and see if someone else has had to go through this before and has any notes/tips. >> >> Best regards, >> >> Roy >> >> _______________________________________________ >> Users mailing list -- users(a)ovirt.org >> To unsubscribe send an email to users-leave(a)ovirt.org >> Privacy Statement: https://www.ovirt.org/site/privacy-policy/ >> oVirt Code of Conduct: https://www.ovirt.org/community/about/community-guidelines/ >> List Archives: https://lists.ovirt.org/archives/list/users@ovirt.org/message/FKFGEOW5OI6A2…

2 1

How do I do bridged networking?
by m.skrzetuski＠gmail.com 06 Jan '20

06 Jan '20

Hello everyone, how do I set up bridged networking? I want to give my VMs direct access to the network, that is: they should get an IP from DHCP and appear as "normal" nodes. This is working out of the box for Proxmox. I was not able to find documentation that would make it possible to configure. Can I configure it via https://github.com/oVirt/ovirt-ansible-infra? Kind regards Skrzetuski

2 2

Usage statistics or graph for an oVirt environment?
by Victor Hooi 06 Jan '20

06 Jan '20

Hi, Is there an easy way to generate a dashboard or some kind of graph to track the usage of an oVirt environment? This would be things like how many VMs were created, or started, how many successful logins, how many clones etc. (Use case is to justify an internal environment/use case) Thanks, Victor

1 0