- Users - oVirt List Archives

OVN and MTU of vnics based on it clarification
by Gianluca Cecchi 08 Jul '18

08 Jul '18

Hello, I'm testing a virtual rhcs cluster based on 4 nodes that are CentOS 7.4 VMs. So the stack is based on Corosync/Pacemaker I have two oVirt hosts and so my plan is to put two VMs on first host and two VMs on the second host, to simulate a two sites config and site loss, before going to physical production config. Incidentally the two hypervisor hosts are indeed placed into different physical datacenters. So far so good. I decided to use OVN for the intracluster dedicated network configured for corosync (each VM has two vnics, one on production lan and one for intracluster). I detected that the cluster worked and formed (also only two nodes) only if the VMs run on the same host, while it seems they are not able to communicate when on different hosts. Ping is ok and an attempt of ssh session between them on intracluster lan, but cluster doesn't come up So after digging in past mailing list mails I found this recent one: https://lists.ovirt.org/archives/list/users@ovirt.org/thread/RMS7XFOZ67O3ER… where the solution was to set 1400 for the MTU of the interfaces on OVN network. It seems it resolves the problem also in my scenario: - I live migrated two VMs on the second host and rhcs clusterware didn't complain - I relocated a resource group composed by several LV/FS, VIP and application from VM running on host1 to VM running on host2 without problems. So the question is: can anyone confirm what are guidelines for settings vnics on OVN? Is there already a document in place about MTU settings for OVN based vnics? Other particular settings or limitations if I want to configure a vnic on OVN? Thanks, Gianluca

2 1

fence_rhevm and ovirt 4.2
by Gianluca Cecchi 08 Jul '18

08 Jul '18

Hello, I'm configuring a virtual rhcs cluster and would like to use fence_rhevm agent for stonith. As VMs composing the 4-nodes cluster I'm using CentOS 7.4 os with fence-agents-rhevm-4.0.11-66.el7_4.4.x86_64; I see that in 7.5 the agent is fence-agents-rhevm-4.0.11-86.el7_5.2.x86_64 but with no modification for the /usr/sbin/fence_rhevm python script apart the BUILD_DATE line. Some questions: - it seems it is still in API v3 even if deprecated; any particular reason? Possible to update to V4? Can I create a RFE bugzilla? This is in fact what I get in engine events registering connection: Client from address "10.4.4.68" is using version 3 of the API, which has been deprecated since version 4.0 of the engine, and will no longer be supported starting with version 4.3. Make sure to update that client to use a supported versions of the API and the SDKs, before upgrading to version 4.3 of the engine. 7/7/184:56:11 PM User fenceuser@internal-authz connecting from '10.4.4.68' using session 'OVgdzMofRFDS4ZKSdL83mRyGUFEdc+++onJHzGiAfpYuS07xa/EbBqFEPtztpwEeRzCn9mBOTGXE69rBbHlhXQ==' logged in. 7/7/184:56:11 PM - UserRole ok Back in April 2017 for version 4.1.1 I had problems and it seems I had to set super user privileges for the "fencing user" See thread here https://lists.ovirt.org/archives/list/users@ovirt.org/message/FS5YFU5ZXIYDC… Now instead I only set UserRole for the defined "fenceuser" on the virtual cluster VMS and it works ok - for a VM with permissions already setup: [root@cl1 ~]# fence_rhevm -a 10.4.192.49 -l "fenceuser@internal" -S /usr/local/bin/pwd_ovmgr01.sh -z --ssl-insecure -o status --shell-timeout=20 --power-wait=10 -n cl1 Status: ON - for a VM still without permissions [root@cl1 ~]# fence_rhevm -a 10.4.192.49 -l "fenceuser@internal" -S /usr/local/bin/pwd_ovmgr01.sh -z --ssl-insecure -o status --shell-timeout=20 --power-wait=10 -n cl2 Failed: Unable to obtain correct plug status or plug is not available - for a VM with permissions already setup: I'm able to make power off / power on of the VM Thanks, Gianluca

2 2

Ovirt vs RHEV
by Krzysztof Wajda 08 Jul '18

08 Jul '18

Hi, can anyone explain differences between Ovirt and RHEV in version 4.1 ? I know that RHEV has diffrent product life-cycle, and there are some diffrences in installation process. Do you know if there are any additional featuers in Ovirt or RHEV ? Do you know any oifficial statements from RH about differences ? From my experience there is not too much diffrences, but I need to prepere such a comaprison for bussines so I would like to get an info from relaiable source. Chris

2 1

Ovirt/ RHV Disaster Recovery Designing
by samee095＠gmail.com 07 Jul '18

07 Jul '18

Hi I've looking for some ideas about designing disaster recovery planning with ovirt 4.2. Since 4.2 we have options to have intergration with disaster recovery site also. I went through some videos at internet and want to share if those are correct or not. Thus you can help me regarding what other things I should be having ideas during planning and designing more about this. 1. We've to keep both sites on and already created datacenter, cluster and one site with storage domain attached and other site with no storage domain. 2. We've to keep latency of 10ms at maximum between both sites. 3. Have to configure virtual machines with affinity group. 4. The VM's which are configured as high-available vm, will be migrated first. 5. There's an Ansible script while have to run to fail over and fail back. Now, please could you help me out regarding this. 1. Where can I find this ansible script? Is this https://github.com/oVirt/ovirt-ansible-disaster-recovery.git? 2. Can this script run at rhv also ? or just for ovirt? Or what other changes I have to make for rhv to have this functionalities? 3. How ovirt/rhv works with the OVN compared to NSX? Is there's any challenges ? 4. Can you share me some high and low level diagram related to rhv disaster planning? 5. How the storage migrates on backend ? During the script ? 6. Where do I run this script? During fail over at primary site and during fail back at secondary site? 7. Basically since only the storage migrates and all other components are on already so basically backend it's only dealing with storage migration according to defined policies ? Please could you help me out with some designing and ideas what're the best architecture during planning on disaster recovery at RHV. Thank you.

3 2

=?utf-8?q?=5Bovirt-users=5D?=(v4.2.5-1.el7) Snapshots UI - html null
by Maton, Brett 07 Jul '18

07 Jul '18

Hi, I'm trying to restore a VM snapshot theough the UI but keep running into this error: Uncaught exception occurred. Please try reloading the page. Details: Exception caught: html is null Please have your administrator check the UI logs ui log attached. CentOS 7 oVirt 4.2.5-1.el7 Regards, Brett

2 5

Re: PollVDSCommand Error: java.lang.NoClassDefFoundError: org/apache/commons/lang/StringUtils
by Greg Sheremeta 07 Jul '18

07 Jul '18

Is your engine functioning at all? I'm not sure if you're saying your entire engine doesn't work, or just host deploy doesn't work. What version of ovirt engine is this? How did you install -- fresh installation, upgrade? From source or rpm? Best wishes, Greg On Wed, Jun 20, 2018 at 12:35 AM Deekshith <deekshith(a)binaryindia.com> wrote: > Dear team > > Please find the attached server and host logs.. ovirt host > unresponsive(down), unable to install node packages. > > > > Regards > > Deekshith > > > > *From:* Roy Golan [mailto:rgolan@redhat.com] > *Sent:* 19 June 2018 06:57 > *To:* Greg Sheremeta > *Cc:* devel; users; deekshith(a)binaryindia.com; allen_john(a)mrpl.co.in > *Subject:* Re: [ovirt-users] PollVDSCommand Error: > java.lang.NoClassDefFoundError: org/apache/commons/lang/StringUtils > > > > > > On Tue, 19 Jun 2018 at 16:04 Greg Sheremeta <gshereme(a)redhat.com> wrote: > > Sending to devel list. > > > > Anyone ever seen this before? It sounds like a bad installation if Java > classes are missing / classloader issues are present. > > > > 2018-06-18 11:23:11,287+05 INFO > [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] > (VdsDeploy) [d6a2578b-c58f-43be-b6ad-30a3a0a57a74] EVENT_ID: > VDS_INSTALL_IN_PROGRESS(509), Correlation ID: > d6a2578b-c58f-43be-b6ad-30a3a0a57a74, Call Stack: null, Custom ID: null, > Custom Event ID: -1, Message: Installing Host Node. Retrieving installation > logs to: > '/var/log/ovirt-engine/host-deploy/ovirt-host-deploy-20180618112311-mrpl.kvm2-d6a2578b-c58f-43be-b6ad-30a3a0a57a74.log'. > > 2018-06-18 11:23:12,131+05 INFO > [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] > (VdsDeploy) [d6a2578b-c58f-43be-b6ad-30a3a0a57a74] EVENT_ID: > VDS_INSTALL_IN_PROGRESS(509), Correlation ID: > d6a2578b-c58f-43be-b6ad-30a3a0a57a74, Call Stack: null, Custom ID: null, > Custom Event ID: -1, Message: Installing Host Node. Stage: Termination. > > 2018-06-18 11:23:12,193+05 INFO > [org.ovirt.vdsm.jsonrpc.client.reactors.ReactorClient] (SSL Stomp Reactor) > [] Connecting to mrpl.kvm2/172.31.1.32 > > 2018-06-18 11:23:12,206+05 ERROR > [org.ovirt.engine.core.vdsbroker.vdsbroker.PollVDSCommand] > (org.ovirt.thread.pool-7-thread-47) [d6a2578b-c58f-43be-b6ad-30a3a0a57a74] > Error: java.lang.NoClassDefFoundError: org/apache/commons/lang/StringUtils > > 2018-06-18 11:23:12,206+05 ERROR > [org.ovirt.engine.core.vdsbroker.vdsbroker.PollVDSCommand] > (org.ovirt.thread.pool-7-thread-47) [d6a2578b-c58f-43be-b6ad-30a3a0a57a74] > Command 'PollVDSCommand(HostName = Node, > VdsIdVDSCommandParametersBase:{runAsync='true', > hostId='d862d5c8-c75e-42ee-867f-ca16a228c2ad'})' execution failed: > java.util.concurrent.ExecutionException: java.lang.NoClassDefFoundError: > org/apache/commons/lang/StringUtils > > 2018-06-18 11:23:12,707+05 ERROR > [org.ovirt.engine.core.vdsbroker.vdsbroker.PollVDSCommand] > (org.ovirt.thread.pool-7-thread-47) [d6a2578b-c58f-43be-b6ad-30a3a0a57a74] > Error: java.lang.NoClassDefFoundError: org/apache/commons/lang/StringUtils > > > > > > Is that a regular installation and what version? > > jdk version? > > server.log engine.log > > > > > > On Tue, Jun 19, 2018 at 8:50 AM Deekshith <deekshith(a)binaryindia.com> > wrote: > > Dear team > > Please find attached ovirt-engine log . > > > > Regards > > Deekshith > > > > *From:* Greg Sheremeta [mailto:gshereme@redhat.com] > *Sent:* 19 June 2018 05:53 > *To:* deekshith(a)binaryindia.com > *Cc:* users > *Subject:* Re: [ovirt-users] Unable to start Ovirt engine > > > > What does it say in the > /var/log/ovirt-engine/setup/ovirt-engine-setup-xxxxxx.log? > > > > On Sun, Jun 17, 2018 at 6:01 AM Deekshith <deekshith(a)binaryindia.com> > wrote: > > Hi Team > > Please anyone help me to solve this issue. > > > > > > *Error! Filename not specified.* > > > > _______________________________________________ > 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/QPBXKHLK4NSU6… > > > > > -- > > *GREG SHEREMETA* > > SENIOR SOFTWARE ENGINEER - TEAM LEAD - RHV UX > > Red Hat NA > > <https://www.redhat.com/> > > gshereme(a)redhat.com IRC: gshereme > > <https://red.ht/sig> > > > > > > > -- > > *GREG SHEREMETA* > > SENIOR SOFTWARE ENGINEER - TEAM LEAD - RHV UX > > Red Hat NA > > <https://www.redhat.com/> > > gshereme(a)redhat.com IRC: gshereme > > <https://red.ht/sig> > > _______________________________________________ > 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/2AA4B5IPQL7O2… > > -- GREG SHEREMETA SENIOR SOFTWARE ENGINEER - TEAM LEAD - RHV UX Red Hat NA <https://www.redhat.com/> gshereme(a)redhat.com IRC: gshereme <https://red.ht/sig>

3 9

import OVA failed
by du_hongyu＠yeah.net 06 Jul '18

06 Jul '18

Hi my ovirt-engine version is 4.2.1, I import OVA by web UI, face some error, can you give me some advise? Regards Hongyu Du

2 1

ovirt, postfix and sendmail
by Fabrice Bacchella 06 Jul '18

06 Jul '18

ovirt in version 4.2 choose to incorporate postfix as a mandatory MTA: yum erase postfix ... Removing: postfix x86_64 2:2.10.1-6.el7 @base 12 M Removing for dependencies: cockpit-ovirt-dashboard noarch 0.11.28-1.el7 @ovirt-4.2 15 M ovirt-host x86_64 4.2.3-1.el7 @ovirt-4.2 11 k ovirt-hosted-engine-setup noarch 2.2.22.1-1.el7 @ovirt-4.2 2.2 M Is there a way to change that ? It's not about postfix being inferior or superior to other solutions. It's that it didn't ask any thing, didn't check if one was already installed. It's just installed. For example: rpm -q --provides postfix MTA config(postfix) = 2:2.10.1-6.el7 postfix = 2:2.10.1-6.el7 postfix(x86-64) = 2:2.10.1-6.el7 server(smtp) smtpd smtpdaemon rpm -q --provides sendmail MTA config(sendmail) = 8.14.7-5.el7 sendmail = 8.14.7-5.el7 sendmail(x86-64) = 8.14.7-5.el7 server(smtp) smtpdaemon There is a lot of other dependencies to declare other than postfix, MTA would have been better.

3 8

Ovirt Networking Setup Questions
by Dave Mintz 06 Jul '18

06 Jul '18

Hello, I am trying to understand, by reading all available docs, how to correctly set up networking. What I have: 6 nodes, 1 engine - all have 3 nics. What I want: To separate traffic into three zones - ovirtmgmt, prod (for vm and admin web interface, data (for db access). So, I have three subnets - 10.10.10.0, 10.10.20.0, and 10.10.30.0 - with matching VLANs 10, 20, 30 I am trying to understand how bonding and bridging work. Should I bond all three nics together? The instructions here: https://www.ovirt.org/documentation/how-to/networking/bonding-vlan-bridge/ <https://www.ovirt.org/documentation/how-to/networking/bonding-vlan-bridge/> seem to do that and then create two bridges br0 and ovirtmgmt, which they then assign ip addresses to. I can do that, but shouldn’t I be configuring all of the networking at the logical network level? So, in that case, should I just create one bond/bridge and then do all of the networking at the logical level? Sorry if this is newbie stuff. Thanks Dave

1 0

Snapshots don't seem to work with Windows VMs
by jmp242＠cornell.edu 06 Jul '18

06 Jul '18

I've been testing with Windows 10 1607 LTSB and created several snapshots. I can preview each one, but they all boot with the same configuration and software installed and files as the "active VM" - so I cannot see at all how to roll back changes. Is this a known issue? I believe I'm following the documentation properly, but I can't see that the snapshots are doing anything. I'm testing on Scientific Linux 7.4 using oVirt 4.2.2.6-1.el7.centos.

2 1