[ovirt-users] production DC non responsive

Hi guys, good morning/night . first of all thanks to all the community and the whole team, you are doing a great effort . Today Im having an issue with ovirt 4.1.2 running as hosted engine over nfs. and data storage over iscsi. I found out of the problem when I tried to migrate one vm to another

Re: [ovirt-users] Good practices

Hi Devin, Please consider that for the OS I have a RAID 1. Now, lets say I use RAID 5 to assemble a single disk on each server. In this case, the SSD will not make any difference, right? I guess that to be possible to use it, the SSD should not be part of the RAID 5. In this case I could

Re: [ovirt-users] Domain name in use? After failed domain setup?

Well, not sure this legit to try, but did try it.. And it seemed to work, I was able to recreate the storage domain as needed... Access the database, and find the bogus storage domain. I figured out the table names from other discussions about accessing the database directly to clean up

Re: [ovirt-users] Domain name in use? After failed domain setup?

Bit more information... [oVirt shell (connected)]# list storagedomains id : 2b6d2e60-6cfb-45cd-a6e1-8cf38ad2bf34 name : Datastore_02 This is the new domain that failed, since the master was not 100% up/initialized, but does NOT appear in the UI of course. When I try to remove

[ovirt-users] Domain name in use? After failed domain setup?

Domain name in use? After failed domain setup? I attempted to create a new domain, but I did not realize the master domain was 100% initialized. The new domain creation failed. But it appears the new domain 'name' was used. Now I cannot create the new domain as expected. I get UI error

Re: [ovirt-users] Good practices

Moacir, I understand that if you do this type of configuration you will be severely impacted on storage performance, specially for writes. Even if you have a Hardware RAID Controller with Writeback cache you will have a significant performance penalty and may not fully use all the resources you

Re: [ovirt-users] Good practices

Hi Colin, Take a look on Devin's response. Also, read the doc he shared that gives some hints on how to deploy Gluster. It is more like that if you want high-performance you should have the bricks created as RAID (5 or 6) by the server's disk controller and them assemble a JBOD GlusterFS.

Re: [ovirt-users] NTP

chronyd is the new ntpd. On Aug 7, 2017 7:23 PM, "Moacir Ferreira" wrote: > I found that NTP does not get installed on oVirt node on the latest > version ovirt-node-ng-installer-ovirt-4.1-2017052309 <(201)%20705-2309> > .iso. > > > Also the installed repositories

[ovirt-users] NTP

I found that NTP does not get installed on oVirt node on the latest version ovirt-node-ng-installer-ovirt-4.1-2017052309.iso. Also the installed repositories does not have it. So, is this a bug or NTP is not considered appropriated anymore? Thanks. Moacir

Re: [ovirt-users] Users Digest, Vol 71, Issue 32

> Users mailing list > Users@ovirt.org <mailto:Users@ovirt.org> > http://lists.ovirt.org/mailman/listinfo/users > <http://lists.ovirt.org/mailman/listinfo/users> > > > > > _

Re: [ovirt-users] Users Digest, Vol 71, Issue 37

he file/move 40Gb NICs. Why not Jumbo frame every where ? -- next part -- An HTML attachment was scrubbed... URL: <http://lists.ovirt.org/pipermail/users/attachments/20170807/4ba55f08/attachment-0001.html> -- Message: 2 Date: Mon, 7 Aug 2017 16:52:40 -0300 F

Re: [ovirt-users] Good practices

Hi Fernando, Indeed, having and arbiter node is always a good idea, and it saves costs a lot. Good luck with your setup. Cheers Erekle On 07.08.2017 23:03, FERNANDO FREDIANI wrote: Thanks for the detailed answer Erekle. I conclude that it is worth in any scenario to have a arbiter node

Re: [ovirt-users] Problemas with ovirtmgmt network used to connect VMs

Hello. Despite I didn't get any feedback on this topic anymore I just wanted to let people know that since I moved the VM to another oVirt Cluster running oVirt-Node-NG and Kernel 3.10 the problem stopped happening. Although I still don't know the cause of it I suspect it may have to do with

Re: [ovirt-users] Good practices

Thanks for the detailed answer Erekle. I conclude that it is worth in any scenario to have a arbiter node in order to avoid wasting more disk space to RAID X + Gluster Replication on the top of it. The cost seems much lower if you consider running costs of the whole storage and compare it

Re: [ovirt-users] How to shutdown an oVirt cluster with Gluster and hosted engine

Hi Moacir, First switch off all VMs. Second you need to declare hosts maintenance mode, don't start with SRM (of course if you are able use the ovirt-engine), it will ask you to shutdown the glusterfs on a machine. Third if all machines are in maintenance mode, you can start shutting down

Re: [ovirt-users] Good practices

Hi Fernando (sorry for misspelling your name, I used a different keyboard), So let's go with the following scenarios: 1. Let's say you have two servers (replication factor is 2), i.e. two bricks per volume, in this case it is strongly recommended to have the arbiter node, the metadata storage

Re: [ovirt-users] Good practices

Hi Franando, So let's go with the following scenarios: 1. Let's say you have two servers (replication factor is 2), i.e. two bricks per volume, in this case it is strongly recommended to have the arbiter node, the metadata storage that will guarantee avoiding the split brain situation, in

Re: [ovirt-users] Good practices

What you mentioned is a specific case and not a generic situation. The main point there is that RAID 5 or 6 impacts write performance compared when you write to only 2 given disks at a time. That was the comparison made. Fernando On 07/08/2017 16:49, Fabrice Bacchella wrote: Le 7 août

Re: [ovirt-users] Good practices

>> Moacir: Yes! This is another reason to have separate networks for >> north/south and east/west. In that way I can use the standard MTU on the >> 10Gb NICs and jumbo frames on the file/move 40Gb NICs. Why not Jumbo frame every where ?___ Users

Re: [ovirt-users] Good practices

> Le 7 août 2017 à 17:41, FERNANDO FREDIANI a écrit > : > > Yet another downside of having a RAID (specially RAID 5 or 6) is that it > reduces considerably the write speeds as each group of disks will end up > having the write speed of a single disk as all other

Re: [ovirt-users] Good practices

Hi Colin, I am in Portugal, so sorry for this late response. It is quite confusing for me, please consider: 1 - What if the RAID is done by the server's disk controller, not by software? 2 - For JBOD I am just using gdeploy to deploy it. However, I am not using the oVirt node GUI to do

[ovirt-users] How to shutdown an oVirt cluster with Gluster and hosted engine

I have installed a oVirt cluster in a KVM virtualized test environment. Now, how do I properly shutdown the oVirt cluster, with Gluster and the hosted engine? I.e.: I want to install a cluster of 3 servers and then send it to a remote office. How do I do it properly? I noticed that glusterd is

Re: [ovirt-users] Install ovirt on Azure

On Mon, Aug 7, 2017 at 1:52 PM, Karli Sjöberg wrote: > On mån, 2017-08-07 at 12:46 +0200, Johan Bernhardsson wrote: > > There is no point on doing that as azure is a cloud in itself and > > ovirt > > is to build your own virtual environment to deploy on local hardware. > >

Re: [ovirt-users] Good practices

On Mon, Aug 7, 2017 at 2:41 PM, Colin Coe wrote: > Hi > > I just thought that you'd do hardware RAID if you had the controller or > JBOD if you didn't. In hindsight, a server with 40Gbps NICs is pretty > likely to have a hardware RAID controller. I've never done JBOD with

Re: [ovirt-users] Good practices

On Mon, Aug 7, 2017 at 6:41 PM, FERNANDO FREDIANI wrote: > Thanks for the clarification Erekle. > > However I get surprised with this way of operating from GlusterFS as it > adds another layer of complexity to the system (either a hardware or > software RAID) before

Re: [ovirt-users] Python errors with ovirt 4.1.4

Thanks, That works but I still have the engine reporting 1 node has an update available, strange. "Check for available updates on host x.xxx.xxx was completed successfully with message 'found updates for packages ovirt-node-ng-image-update-4.1.4-1.el7.centos'." Regards,

Re: [ovirt-users] ovirt 4.1 : Can't install guest tools for Zentyal 5.0 (based on ubuntu 16.04 xenial)

> > > > Better workaround is to download newer python-apt from here [1] and > install it manually with dpkg. The guest agent seems to work OK with it. > There's much less chance of breaking something else, also newer > python-apt will be picked-up automatically on upgrades. > > Tomas > > > [1]

Re: [ovirt-users] Good practices

Thanks for the clarification Erekle. However I get surprised with this way of operating from GlusterFS as it adds another layer of complexity to the system (either a hardware or software RAID) before the gluster config and increase the system's overall costs. An important point to consider

Re: [ovirt-users] ovirt 4.1 : Can't install guest tools for Zentyal 5.0 (based on ubuntu 16.04 xenial)

On Mon, 7 Aug 2017 16:08:00 +0200 "yayo (j)" wrote: > > > > This is the problem! > > > > I looked at the packages for conflict and figured the issue is in gnpug. > > Zentyal repository contains gnupg version 2.1.15-1ubuntu6 which breaks > > python-apt <= 1.1.0~beta4. > > > >

Re: [ovirt-users] ovirt 4.1 : Can't install guest tools for Zentyal 5.0 (based on ubuntu 16.04 xenial)

> > Agreed. >> >> Open a bug with Zentyal. They broke the packages from Ubuntu and should >> fix it themselves. They have to backport newer version of python-apt. >> The one from yakkety (1.1.0~beta5) should be good enough to fix the >> problem. >> >> In the bug report note that the

Re: [ovirt-users] Software RAID on oVirt Node

Vinícius Ferrão writes: > Hello Chris, > > On non-node installation I can’t see any problems as you said, but due > to the appliance nature of oVirt Node I don’t know if this would be a > supported scenario. Anyway you raised a good point: local storage. I’m > not needing

Re: [ovirt-users] ovirt 4.1 : Can't install guest tools for Zentyal 5.0 (based on ubuntu 16.04 xenial)

> > This is the problem! > > I looked at the packages for conflict and figured the issue is in gnpug. > Zentyal repository contains gnupg version 2.1.15-1ubuntu6 which breaks > python-apt <= 1.1.0~beta4. > > Ok, thank you! Any workaround (something like packege pinning?) to fix this problem? > >

Re: [ovirt-users] Good practices

Hi Frenando, Here is my experience, if you consider a particular hard drive as a brick for gluster volume and it dies, i.e. it becomes not accessible it's a huge hassle to discard that brick and exchange with another one, since gluster some tries to access that broken brick and it's causing

Re: [ovirt-users] Good practices

Moacir, I beleive for using the 3 servers directly connected to each others without switch you have to have a Bridge on each server for every 2 physical interfaces to allow the traffic passthrough in layer2 (Is it possible to create this from the oVirt Engine Web Interface?). If your ovirtmgmt

Re: [ovirt-users] Good practices

For any RAID 5 or 6 configuration I normally follow a simple gold rule which gave good results so far: - up to 4 disks RAID 5 - 5 or more disks RAID 6 However I didn't really understand well the recommendation to use any RAID with GlusterFS. I always thought that GlusteFS likes to work in

Re: [ovirt-users] Good practices

Hi, in-line responses. Thanks, Moacir From: Yaniv Kaul Sent: Monday, August 7, 2017 7:42 AM To: Moacir Ferreira Cc: users@ovirt.org Subject: Re: [ovirt-users] Good practices On Sun, Aug 6, 2017 at 5:49 PM, Moacir Ferreira

Re: [ovirt-users] Python errors with ovirt 4.1.4

Hi, The problem should be solved here: http://jenkins.ovirt.org/job/ovirt-node-ng_ovirt-4.1_build-artifacts-el7-x86_64/lastSuccessfulBuild/artifact/exported-artifacts/ Thanks, Yuval. On Fri, Aug 4, 2017 at 12:37 PM, Staniforth, Paul < p.stanifo...@leedsbeckett.ac.uk> wrote: > Hello, > >

Re: [ovirt-users] ovirt 4.1 : Can't install guest tools for Zentyal 5.0 (based on ubuntu 16.04 xenial)

On Mon, 7 Aug 2017 10:18:35 +0200 "yayo (j)" wrote: > Hi, > > > I just tried that with development version of Zentyal and it works for > > me. Well, there are some caveats, see below. > > > > > Please provide steps not just "works for me" ... Thank you > > > > > > Just

Re: [ovirt-users] Good practices

Hi I just thought that you'd do hardware RAID if you had the controller or JBOD if you didn't. In hindsight, a server with 40Gbps NICs is pretty likely to have a hardware RAID controller. I've never done JBOD with hardware RAID. I think having a single gluster brick on hardware JBOD would be

Re: [ovirt-users] Install ovirt on Azure

On mån, 2017-08-07 at 12:46 +0200, Johan Bernhardsson wrote: > There is no point on doing that as azure is a cloud in itself and > ovirt > is to build your own virtual environment to deploy on local hardware. Yeah, of course and I think Grzegorz knows that. But for people in the testing,

Re: [ovirt-users] Install ovirt on Azure

There is no point on doing that as azure is a cloud in itself and ovirt is to build your own virtual environment to deploy on local hardware. /Johan On Mon, 2017-08-07 at 12:32 +0200, Grzegorz Szypa wrote: > Hi. > > Did anyone try to install ovirt on Azure Environment? > > --  > G.Sz. >

[ovirt-users] Install ovirt on Azure

Hi. Did anyone try to install ovirt on Azure Environment? -- G.Sz. ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users

Re: [ovirt-users] oVirt LDAP user authentication troubleshooting

The best is to use this tool: $ ovirt-engine-extensions-tool --log-level=FINEST aaa search --extension-name=your-openldap-authz-name --entity-name=myuser It prints pretty verbose output, which you can analyze. On Mon, Aug 7, 2017 at 9:01 AM, NUNIN Roberto wrote: >

Re: [ovirt-users] Good practices

Devin, Many, many thaks for your response. I will read the doc you sent and if I still have questions I will post them here. But why would I use a RAIDed brick if Gluster, by itself, already "protects" the data by making replicas. You see, that is what is confusing to me... Thanks, Moacir

Re: [ovirt-users] Install external certificate

On Tue, Aug 1, 2017 at 3:39 PM, Marcelo Leandro wrote: > Good morning > > I bought a external certificate, in godaddy , and they send to me only > one archive crt. I saw this: > https://www.ovirt.org/documentation/admin-guide/appe-oVirt_and_SSL/ > > I don't know how I

Re: [ovirt-users] ovirt 4.1 : Can't install guest tools for Zentyal 5.0 (based on ubuntu 16.04 xenial)

Hi, I just tried that with development version of Zentyal and it works for > me. Well, there are some caveats, see below. > > Please provide steps not just "works for me" ... Thank you > > Just wanted to add my input. I just recently noticed the same thing. > > Luckily i was just testing

[ovirt-users] oVirt LDAP user authentication troubleshooting

I've two oVirt 4.1.4.2-1 pods used for labs. These two pods are configured in the same way (three node with gluster) Trying to setup LDAP auth, towards the same OpenLDAP server, setup ends correctly in both engine VM. When I try to perform system permission modification, only one of these is

Re: [ovirt-users] Good practices

On Sun, Aug 6, 2017 at 5:49 PM, Moacir Ferreira wrote: > I am willing to assemble a oVirt "pod", made of 3 servers, each with 2 CPU > sockets of 12 cores, 256GB RAM, 7 HDD 10K, 1 SSD. The idea is to use > GlusterFS to provide HA for the VMs. The 3 servers have a dual