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Hosted engine : rebuild without backups ?
by spfma.tech＠e.mail.fr 26 Mar '18

26 Mar '18

--=_62f810b8f4d72b7d533cbfaf8d5506c2 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Hi,=0A In case of a total failure of the hosted engine VM, it is recom= mended to recreate a new one and restore a backup. I hope it works, I wi= ll probably have to do this very soon. But is there some kind of "plug= and play" features, able to rebuild configuration by browsing storage d= omains, if the restore process doesn't work ? Something like identifyi= ng VMs and their snapshots in the subdirectories, and the guess what is= linked to what, ... ? I have a few machines but if I have to rebuild= all the engine setup and content, I would like to be able to identify r= esources easily. A few times ago, I was doing some experiments with Xe= nServer and destroyed/recreated some setup items : I ended with a lot of= oprhan resources, and it was a mess to reattach snapshots to their resp= ective VMs. So if oVirt is more helpful in that way ... Regards =0A=0A= ------------------------------------------------------------------------= -------------------------=0AFreeMail powered by mail.fr --=_62f810b8f4d72b7d533cbfaf8d5506c2 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable <div><span style=3D"font-family: arial, helvetica,sans-serif; font-size:= 10pt; color: #000000;">Hi,<br /></span></div>=0A<div> </div>=0A<di= v><span style=3D"font-family: arial, helvetica,sans-serif; font-size: 10= pt; color: #000000;">In case of a total failure of the hosted engine VM,= it is recommended to recreate a new one and restore a backup. I hope it= works, I will probably have to do this very soon.</span></div>=0A<div>&= nbsp;</div>=0A<div><span style=3D"font-family: arial, helvetica,sans-ser= if; font-size: 10pt; color: #000000;">But is there some kind of "plug an= d play" features, able to rebuild configuration by browsing storage doma= ins, if the restore process doesn't work ?</span></div>=0A<div> </d= iv>=0A<div><span style=3D"font-family: arial, helvetica,sans-serif; font= -size: 10pt; color: #000000;">Something like identifying VMs and their s= napshots in the subdirectories, and the guess what is linked to what, ..= . ? </span></div>=0A<div> </div>=0A<div><span style=3D"font-family:= arial, helvetica,sans-serif; font-size: 10pt; color: #000000;">I have a= few machines but if I have to rebuild all the engine setup and content,= I would like to be able to identify resources easily.</span></div>=0A<d= iv> </div>=0A<div><span style=3D"font-family: arial, helvetica,sans= -serif; font-size: 10pt; color: #000000;">A few times ago, I was doing s= ome experiments with XenServer and destroyed/recreated some setup items= : I ended with a lot of oprhan resources, and it was a mess to reattach= snapshots to their respective VMs. So if oVirt is more helpful in that= way ...</span></div>=0A<div><span style=3D"font-family: arial, helvetic= a,sans-serif; font-size: 10pt; color: #000000;"> </span></div>=0A<d= iv><span style=3D"font-family: arial, helvetica,sans-serif; font-size: 1= 0pt; color: #000000;">Regards</span></div>=0A <br/><h= r>FreeMail powered by <a href=3D"https://mail.fr" target=3D"_blank">mail= .fr</a>=0A --=_62f810b8f4d72b7d533cbfaf8d5506c2--

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Filter engine log to get only logs shown on the "event console"
by yayo (j) 26 Mar '18

26 Mar '18

Hi all, I want to reproduce log shown on the "event console" on my monitoring system but I cant' find the right filter to use. I'm parsing the engine.log on the hosted engine vm. Is the right log file to parse? There is any other way? Thank you

2 1

Ovirt nodes NFS connection
by Tal Bar-Or 25 Mar '18

25 Mar '18

Hello All, I am about to deploy a new Ovirt platform, the platform will consist 4 Ovirt nodes including management, all servers nodes and storage will have the following config: *nodes server* 4x10G ports network cards 2x10G will be used for VM network. 2x10G will be used for storage connection 2x1Ge 1xGe for nodes management *Storage *4x10G ports network cards 3 x10G for NFS storage mount Ovirt nodes Now given above network configuration layout, what is best practices in terms of nodes for storage NFS connection, throughput and path resilience suggested to use First option each node 2x 10G lacp and on storage side 3x10G lacp? The second option creates 3 VLAN's assign each node on that 3 VLAN's across 2 nic, and on storage, side assigns 3 nice across 3 VLANs? Thanks -- Tal Bar-or

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FC LUN
by Стаценко Константин Юрьевич 25 Mar '18

25 Mar '18

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3 4

Can't add/remove usb device to VM
by Jon bae 25 Mar '18

25 Mar '18

Hello, I run oVirt 4.2.1, in 4.1 I added a USB device to a VM and now I wanted to change this device to a different VM. But I found out, that I'm not able to remove this device nor I'm able to add any device to any VM. The device list is empty. I found a bug report, what describe this error: https://bugzilla.redhat.com/show_bug.cgi?id=1531847 Is there a solution for that? The USB device is a hardware dongle and it is very impotent for us to change this. Any workaround is welcome! Regards Jonathan

2 2

Cannot remove VM
by Angel R. Gonzalez 25 Mar '18

25 Mar '18

Hi, I can't edit/remove/modify a VM. Always show a message: "Cannot remove VM. Related operation is currently in progress. Please try again later" I also used REST API curl -k -u admin@internal:passwd -X DELETE https://engine/ovirt-engine/api/vms/XXXXXXXX and the output message is the same. How to can execute actions over the VM, or how to remove it from Cluster? Thanks in advance. Ángel González.

2 1

Problem to upgrade level cluster to 4.1
by Marcelo Leandro 25 Mar '18

25 Mar '18

Hello, I am try update the cluster level but i had this menssage erro: Erro durante a execução da ação: Update of cluster compatibility version failed because there are VMs/Templates [VPS-NAME01, VPS-NAME02, VPS-NAME03] with incorrect configuration. To fix the issue, please go to each of them, edit and press OK. If the save does not pass, fix the dialog validation. 23/03/2018 15:03:07 Cannot update compatibility version of Vm/Template: [VPS-NAME01], Message: [No Message] 23/03/2018 15:03:07 Cannot update compatibility version of Vm/Template: [VPS-NAME02], Message: [No Message] 23/03/2018 15:03:07 Cannot update compatibility version of Vm/Template: [VPS-NAME03], Message: [No Message] I am already open the edit box vm and close with ok button how show in the erro menssagem: To fix the issue, please go to each of them, edit and press OK. If the save does not pass, fix the dialog validation. But not return error when save. Anyone can help me ?

2 1

Can't Add Host To New Hosted Engine - "Server is already part of another cluster"
by Adam Chesterton 25 Mar '18

25 Mar '18

Hi Everyone, I'm running a 3-host hyperconverged Gluster setup for testing (on some old desktops), and recently the hosted engine died on me, so I have attempted to just clean up my existing hosts, leaving Gluster configured, and re-deploy a fresh hosted engine setup on them. I have successfully got the first host setup and the hosted engine is running on that host. However, when I try to add the other two hosts via the web GUI (as I can no longer add them via CLI) I get this error: "Error while executing action: Server XXXXX is already part of another cluster." I've tried to find where this would still be configured on the two other hosts, but I cannot find anywhere. Does anyone know how I can stop these two hosts from thinking they are still in a cluster? Or, does anyone have some information that might help, or am I going to just have to start a fresh CentOS install? Regards, Adam

3 4

Disk upload cancel/remove
by Alex K 25 Mar '18

25 Mar '18

Hi All, I was trying to upload a VM disk at data storage domain using a python script. I did cancel the upload twice and at the third time the upload was successful, but I see two disks from the previous attempts with status "transferring via API" (see attached). This status of for more then 8 hours and I cannot remove them. Is there any way to clean them from the disks inventory? I am using ovirt 4.1.9.1-1.el7.centos with self hosted engine on 3 nodes. Thanx, Alex

3 4

GlusterFS performance with only one drive per host?
by Jayme 24 Mar '18

24 Mar '18

I'm spec'ing a new oVirt build using three Dell R720's w/ 256GB. I'm considering storage options. I don't have a requirement for high amounts of storage, I have a little over 1TB to store but want some overhead so I'm thinking 2TB of usable space would be sufficient. I've been doing some research on Micron 1100 2TB ssd's and they seem to offer a lot of value for the money. I'm considering using smaller cheaper SSDs for boot drives and using one 2TB micron SSD in each host for a glusterFS replica 3 setup (on the fence about using an arbiter, I like the extra redundancy replicate 3 will give me). My question is, would I see a performance hit using only one drive in each host with glusterFS or should I try to add more physical disks. Such as 6 1TB drives instead of 3 2TB drives? Also one other question. I've read that gluster can only be done in groups of three. Meaning you need 3, 6, or 9 hosts. Is this true? If I had an operational replicate 3 glusterFS setup and wanted to add more capacity I would have to add 3 more hosts, or is it possible for me to add a 4th host in to the mix for extra processing power down the road? Thanks!

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