- Users - oVirt List Archives

oVirt Node install with Foreman VG issue
by simon＠justconnect.ie 22 Feb '21

22 Feb '21

Hi All, I have a server with a RAID1 disk for sda and RAID 5 disk for sdb. Following default install, prior to Cockpit Gluster and Engine wizards there is only a single Volume Group which doesn’t allow me to continue. If I manually configure the install and deselect sdb it gives other issues with multipath but at least I can resolve those. Is there a specific kickstart confuguration that should be used? Kind Regards Shimme

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Re: oVirt Engine increase RAM and CPU
by Vrgotic, Marko 22 Feb '21

22 Feb '21

Mem guaranteed updates, CPU cores updates instantly and perist after reboot But defined memory is “stuck” on 16384 after reboot. ----- kind regards/met vriendelijke groeten Marko Vrgotic Sr. System Engineer @ System Administration ActiveVideo o: +31 (35) 6774131 m: +31 (65) 5734174 e: m.vrgotic(a)activevideo.com<mailto:m.vrgotic@activevideo.com> w: www.activevideo.com<http://www.activevideo.com> ActiveVideo Networks BV. Mediacentrum 3745 Joop van den Endeplein 1.1217 WJ Hilversum, The Netherlands. The information contained in this message may be legally privileged and confidential. It is intended to be read only by the individual or entity to whom it is addressed or by their designee. If the reader of this message is not the intended recipient, you are on notice that any distribution of this message, in any form, is strictly prohibited. If you have received this message in error, please immediately notify the sender and/or ActiveVideo Networks, LLC by telephone at +1 408.931.9200 and delete or destroy any copy of this message. From: Vrgotic, Marko <M.Vrgotic(a)activevideo.com> Date: Monday, 22 February 2021 at 20:57 To: Yedidyah Bar David <didi(a)redhat.com> Cc: users(a)ovirt.org <users(a)ovirt.org> Subject: Re: [ovirt-users] oVirt Engine increase RAM and CPU Hi all, Still testing in staging and I have not moved from updating RAM. Initially, I made the change via Portal, updating defined memory of HE from 16384 to 32768. The change is instantly visible on VM when I execute free -m , but in the VM info it still says 16384. I waited almost 4hours and this value did not get updated. Tried shutdown, remove GM, allow the HA to start the VM, it booted with 16384 allocated. Than I did it again, and tried with Update OVF from storage domain where the HE disk is, same, no change. Tried, updating memory again, migrating to another HA host – Update OVF , same thing, after reboot, the memory is back to 16384. Can somebody give me an advice where to look further? Again, making the change in memory amount is instant on the VM, but after reboot, its back to 16384. ----- kind regards/met vriendelijke groeten Marko Vrgotic Sr. System Engineer @ System Administration ActiveVideo o: +31 (35) 6774131 m: +31 (65) 5734174 e: m.vrgotic(a)activevideo.com<mailto:m.vrgotic@activevideo.com> w: www.activevideo.com<http://www.activevideo.com> ActiveVideo Networks BV. Mediacentrum 3745 Joop van den Endeplein 1.1217 WJ Hilversum, The Netherlands. The information contained in this message may be legally privileged and confidential. It is intended to be read only by the individual or entity to whom it is addressed or by their designee. If the reader of this message is not the intended recipient, you are on notice that any distribution of this message, in any form, is strictly prohibited. If you have received this message in error, please immediately notify the sender and/or ActiveVideo Networks, LLC by telephone at +1 408.931.9200 and delete or destroy any copy of this message. From: Yedidyah Bar David <didi(a)redhat.com> Date: Monday, 22 February 2021 at 15:19 To: Vrgotic, Marko <M.Vrgotic(a)activevideo.com> Cc: users(a)ovirt.org <users(a)ovirt.org> Subject: Re: [ovirt-users] oVirt Engine increase RAM and CPU ***CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you recognize the sender!!!*** On Mon, Feb 22, 2021 at 4:10 PM Vrgotic, Marko <M.Vrgotic(a)activevideo.com> wrote: > > Hi Didi, > > > > I increased the RAM from 16 to 32 and change is instant on the VM, but as you have mentioned, it does not get written right away to VM image. > > Upon reboot its back to 16GB RAM. > > > > > > At this moment, change is applied, and I am waiting up to 60min to see if the changes will be written to survive reboot. > > > > Regarding how to change it, the UI Edit seem to be the way. If I go with /var/run/… file changes fast, even with VM being shutdown. > > > > @oVirt does anyone know how long it usually takes to have the change written to VM image? up to 60 minutes :-). I think you can change this with engine-config, item OvfUpdateIntervalInMinutes . Best regards, > > > > > > > > ----- > > kind regards/met vriendelijke groeten > > > > Marko Vrgotic > Sr. System Engineer @ System Administration > > > ActiveVideo > > o: +31 (35) 6774131 > > m: +31 (65) 5734174 > > e: m.vrgotic(a)activevideo.com > w: https://nam10.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.active… > > > > ActiveVideo Networks BV. Mediacentrum 3745 Joop van den Endeplein 1.1217 WJ Hilversum, The Netherlands. The information contained in this message may be legally privileged and confidential. It is intended to be read only by the individual or entity to whom it is addressed or by their designee. If the reader of this message is not the intended recipient, you are on notice that any distribution of this message, in any form, is strictly prohibited. If you have received this message in error, please immediately notify the sender and/or ActiveVideo Networks, LLC by telephone at +1 408.931.9200 and delete or destroy any copy of this message. > > > > > > > > From: Yedidyah Bar David <didi(a)redhat.com> > Date: Monday, 22 February 2021 at 11:05 > To: Vrgotic, Marko <M.Vrgotic(a)activevideo.com> > Cc: users(a)ovirt.org <users(a)ovirt.org> > Subject: Re: [ovirt-users] oVirt Engine increase RAM and CPU > > ***CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you recognize the sender!!!*** > > On Mon, Feb 22, 2021 at 11:01 AM Vrgotic, Marko > <M.Vrgotic(a)activevideo.com> wrote: > > > > Hi Didi, > > > > > > > > Just to be sure, considering its an HA instance, I need to set to maintenance=global and execute these changes – CPU increase will most likely require reboot? > > Please note that I do not have any experience with this whatsoever. > Also for the further replies below. Just guessing. I suggest to try > first on a test system if it's about a production/critical system. > > I guess that it will mark the VM as requiring a reboot for changes to > take effect, and that they'll actually be applied only on hard-reboot > (meaning, not just running 'reboot' from inside). So yes, > I guess the process should be: > > 1. Edit as needed > 2. Perhaps wait a bit or something like that to make sure changes > reached OVF_STORE on the shared storage. No idea how. Perhaps we log > enough about this to existing logs, or perhaps you can dump the conf > to verify manually. > 2. Set global maint, shutdown, clear global maint (and either > immediately start the vm or let ha-agent do this for you). > > > > > > > > > For the HEAP changes, I have been doing that lot on the Atlassian instances, just not sure how oVirt-engine is going to react and if there are any guidelines I should stick to in ovirt case. > > I have no idea other than the bugs I was personally involved with > (which you can find in bugzilla). > Perhaps RHV or oVirt docs have some guidelines, didn't check. > If not, then I suppose the guidelines are "Use the defaults and follow > recommendations", which mean: > 1. Allocate 16GB RAM for the HE VM. Perhaps we even recommend more > than that for larger setups, not sure. > 2. engine-setup then sets both min and max to 4GB (=25% of RAM). > > If you do want to play with this, you should of course test thoroughly > and carefully :-). > Consider also other processes on the machine needing rather-large > amounts of memory, including DWH and PostgreSQL (which we also > automatically configure and which you can further refine if needed, > and also set up to run on separate machines). > > > > > I.e. What if I set min and max to same value? > > That's a question for the JVM, not for oVirt :-). I suppose it will > simply use a constant size. > > > > > Is it going to be “ok” if I assign more than half of system RAM to the JAVA? Ect… > > It should be, if you make sure other stuff (dwh+pg) do not use too > much, or you have also enough swap (but then do not expect good > performance if you actually run into actually using it). > > > > > > > > > ----- > > > > kind regards/met vriendelijke groeten > > > > > > > > Marko Vrgotic > > Sr. System Engineer @ System Administration > > > > > > ActiveVideo > > > > o: +31 (35) 6774131 > > > > m: +31 (65) 5734174 > > > > e: m.vrgotic(a)activevideo.com > > w: https://nam10.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.active… > > > > > > > > ActiveVideo Networks BV. Mediacentrum 3745 Joop van den Endeplein 1.1217 WJ Hilversum, The Netherlands. The information contained in this message may be legally privileged and confidential. It is intended to be read only by the individual or entity to whom it is addressed or by their designee. If the reader of this message is not the intended recipient, you are on notice that any distribution of this message, in any form, is strictly prohibited. If you have received this message in error, please immediately notify the sender and/or ActiveVideo Networks, LLC by telephone at +1 408.931.9200 and delete or destroy any copy of this message. > > > > > > > > > > > > > > > > From: Vrgotic, Marko <M.Vrgotic(a)activevideo.com> > > Date: Monday, 22 February 2021 at 09:08 > > To: Yedidyah Bar David <didi(a)redhat.com> > > Cc: users(a)ovirt.org <users(a)ovirt.org> > > Subject: Re: [ovirt-users] oVirt Engine increase RAM and CPU > > > > Thank you Didi. > > > > > > > > ----- > > > > kind regards/met vriendelijke groeten > > > > > > > > Marko Vrgotic > > Sr. System Engineer @ System Administration > > > > > > ActiveVideo > > > > o: +31 (35) 6774131 > > > > m: +31 (65) 5734174 > > > > e: m.vrgotic(a)activevideo.com > > w: https://nam10.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.active… > > > > > > > > ActiveVideo Networks BV. Mediacentrum 3745 Joop van den Endeplein 1.1217 WJ Hilversum, The Netherlands. The information contained in this message may be legally privileged and confidential. It is intended to be read only by the individual or entity to whom it is addressed or by their designee. If the reader of this message is not the intended recipient, you are on notice that any distribution of this message, in any form, is strictly prohibited. If you have received this message in error, please immediately notify the sender and/or ActiveVideo Networks, LLC by telephone at +1 408.931.9200 and delete or destroy any copy of this message. > > > > > > > > > > > > > > > > From: Yedidyah Bar David <didi(a)redhat.com> > > Date: Sunday, 21 February 2021 at 08:03 > > To: Vrgotic, Marko <M.Vrgotic(a)activevideo.com> > > Cc: users(a)ovirt.org <users(a)ovirt.org> > > Subject: Re: [ovirt-users] oVirt Engine increase RAM and CPU > > > > ***CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you recognize the sender!!!*** > > > > On Fri, Feb 19, 2021 at 12:39 PM Vrgotic, Marko > > <M.Vrgotic(a)activevideo.com> wrote: > > > > > > Hi oVirt, > > > > > > > > > > > > What is the cleanest way to increase the memory and cpu for SHE engine? > > > > Did you try to simply edit the vm from the admin ui? This should be > > possible for most fields for quite some time now: > > > > https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fbugzilla.… > > > > > > > > > > > > > > We have the Engine running on top of three HA hosts, so I guess the specs need to be change on all three, while engine is down. > > > > > > > > > > > > Is it done by editing the VM libvirt conf file or some other way? > > > > > > > > > > > > Where do I allocate more RAM to JAVA for oVirt? > > > > You can control the values passed as -Xms and -Xmx using the config > > values ENGINE_HEAP_MIN and ENGINE_HEAP_MAX. > > > > They are set by engine-setup on initial setup but not changed later. > > It writes /etc/ovirt-engine/engine.conf.d/10-setup-java.conf . > > It's probably safer to create your own file for overriding, e.g. > > 99-my-setup-java.conf or something. > > > > There have been various relevant changes to this over the years, you > > can search bugzilla for 'ENGINE_HEAP_MIN' to find them. > > > > > > > > > > > > > > We are currently running 4.3.8 version. > > > > > > > > > > > > Kindly awaiting your reply. > > > > Good luck and best regards, > > -- > > Didi > > > > -- > Didi -- Didi

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Re: oVirt Engine increase RAM and CPU
by Yedidyah Bar David 22 Feb '21

22 Feb '21

On Mon, Feb 22, 2021 at 4:10 PM Vrgotic, Marko <M.Vrgotic(a)activevideo.com> wrote: > > Hi Didi, > > > > I increased the RAM from 16 to 32 and change is instant on the VM, but as you have mentioned, it does not get written right away to VM image. > > Upon reboot its back to 16GB RAM. > > > > > > At this moment, change is applied, and I am waiting up to 60min to see if the changes will be written to survive reboot. > > > > Regarding how to change it, the UI Edit seem to be the way. If I go with /var/run/… file changes fast, even with VM being shutdown. > > > > @oVirt does anyone know how long it usually takes to have the change written to VM image? up to 60 minutes :-). I think you can change this with engine-config, item OvfUpdateIntervalInMinutes . Best regards, > > > > > > > > ----- > > kind regards/met vriendelijke groeten > > > > Marko Vrgotic > Sr. System Engineer @ System Administration > > > ActiveVideo > > o: +31 (35) 6774131 > > m: +31 (65) 5734174 > > e: m.vrgotic(a)activevideo.com > w: www.activevideo.com > > > > ActiveVideo Networks BV. Mediacentrum 3745 Joop van den Endeplein 1.1217 WJ Hilversum, The Netherlands. The information contained in this message may be legally privileged and confidential. It is intended to be read only by the individual or entity to whom it is addressed or by their designee. If the reader of this message is not the intended recipient, you are on notice that any distribution of this message, in any form, is strictly prohibited. If you have received this message in error, please immediately notify the sender and/or ActiveVideo Networks, LLC by telephone at +1 408.931.9200 and delete or destroy any copy of this message. > > > > > > > > From: Yedidyah Bar David <didi(a)redhat.com> > Date: Monday, 22 February 2021 at 11:05 > To: Vrgotic, Marko <M.Vrgotic(a)activevideo.com> > Cc: users(a)ovirt.org <users(a)ovirt.org> > Subject: Re: [ovirt-users] oVirt Engine increase RAM and CPU > > ***CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you recognize the sender!!!*** > > On Mon, Feb 22, 2021 at 11:01 AM Vrgotic, Marko > <M.Vrgotic(a)activevideo.com> wrote: > > > > Hi Didi, > > > > > > > > Just to be sure, considering its an HA instance, I need to set to maintenance=global and execute these changes – CPU increase will most likely require reboot? > > Please note that I do not have any experience with this whatsoever. > Also for the further replies below. Just guessing. I suggest to try > first on a test system if it's about a production/critical system. > > I guess that it will mark the VM as requiring a reboot for changes to > take effect, and that they'll actually be applied only on hard-reboot > (meaning, not just running 'reboot' from inside). So yes, > I guess the process should be: > > 1. Edit as needed > 2. Perhaps wait a bit or something like that to make sure changes > reached OVF_STORE on the shared storage. No idea how. Perhaps we log > enough about this to existing logs, or perhaps you can dump the conf > to verify manually. > 2. Set global maint, shutdown, clear global maint (and either > immediately start the vm or let ha-agent do this for you). > > > > > > > > > For the HEAP changes, I have been doing that lot on the Atlassian instances, just not sure how oVirt-engine is going to react and if there are any guidelines I should stick to in ovirt case. > > I have no idea other than the bugs I was personally involved with > (which you can find in bugzilla). > Perhaps RHV or oVirt docs have some guidelines, didn't check. > If not, then I suppose the guidelines are "Use the defaults and follow > recommendations", which mean: > 1. Allocate 16GB RAM for the HE VM. Perhaps we even recommend more > than that for larger setups, not sure. > 2. engine-setup then sets both min and max to 4GB (=25% of RAM). > > If you do want to play with this, you should of course test thoroughly > and carefully :-). > Consider also other processes on the machine needing rather-large > amounts of memory, including DWH and PostgreSQL (which we also > automatically configure and which you can further refine if needed, > and also set up to run on separate machines). > > > > > I.e. What if I set min and max to same value? > > That's a question for the JVM, not for oVirt :-). I suppose it will > simply use a constant size. > > > > > Is it going to be “ok” if I assign more than half of system RAM to the JAVA? Ect… > > It should be, if you make sure other stuff (dwh+pg) do not use too > much, or you have also enough swap (but then do not expect good > performance if you actually run into actually using it). > > > > > > > > > ----- > > > > kind regards/met vriendelijke groeten > > > > > > > > Marko Vrgotic > > Sr. System Engineer @ System Administration > > > > > > ActiveVideo > > > > o: +31 (35) 6774131 > > > > m: +31 (65) 5734174 > > > > e: m.vrgotic(a)activevideo.com > > w: https://nam10.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.active… > > > > > > > > ActiveVideo Networks BV. Mediacentrum 3745 Joop van den Endeplein 1.1217 WJ Hilversum, The Netherlands. The information contained in this message may be legally privileged and confidential. It is intended to be read only by the individual or entity to whom it is addressed or by their designee. If the reader of this message is not the intended recipient, you are on notice that any distribution of this message, in any form, is strictly prohibited. If you have received this message in error, please immediately notify the sender and/or ActiveVideo Networks, LLC by telephone at +1 408.931.9200 and delete or destroy any copy of this message. > > > > > > > > > > > > > > > > From: Vrgotic, Marko <M.Vrgotic(a)activevideo.com> > > Date: Monday, 22 February 2021 at 09:08 > > To: Yedidyah Bar David <didi(a)redhat.com> > > Cc: users(a)ovirt.org <users(a)ovirt.org> > > Subject: Re: [ovirt-users] oVirt Engine increase RAM and CPU > > > > Thank you Didi. > > > > > > > > ----- > > > > kind regards/met vriendelijke groeten > > > > > > > > Marko Vrgotic > > Sr. System Engineer @ System Administration > > > > > > ActiveVideo > > > > o: +31 (35) 6774131 > > > > m: +31 (65) 5734174 > > > > e: m.vrgotic(a)activevideo.com > > w: https://nam10.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.active… > > > > > > > > ActiveVideo Networks BV. Mediacentrum 3745 Joop van den Endeplein 1.1217 WJ Hilversum, The Netherlands. The information contained in this message may be legally privileged and confidential. It is intended to be read only by the individual or entity to whom it is addressed or by their designee. If the reader of this message is not the intended recipient, you are on notice that any distribution of this message, in any form, is strictly prohibited. If you have received this message in error, please immediately notify the sender and/or ActiveVideo Networks, LLC by telephone at +1 408.931.9200 and delete or destroy any copy of this message. > > > > > > > > > > > > > > > > From: Yedidyah Bar David <didi(a)redhat.com> > > Date: Sunday, 21 February 2021 at 08:03 > > To: Vrgotic, Marko <M.Vrgotic(a)activevideo.com> > > Cc: users(a)ovirt.org <users(a)ovirt.org> > > Subject: Re: [ovirt-users] oVirt Engine increase RAM and CPU > > > > ***CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you recognize the sender!!!*** > > > > On Fri, Feb 19, 2021 at 12:39 PM Vrgotic, Marko > > <M.Vrgotic(a)activevideo.com> wrote: > > > > > > Hi oVirt, > > > > > > > > > > > > What is the cleanest way to increase the memory and cpu for SHE engine? > > > > Did you try to simply edit the vm from the admin ui? This should be > > possible for most fields for quite some time now: > > > > https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fbugzilla.… > > > > > > > > > > > > > > We have the Engine running on top of three HA hosts, so I guess the specs need to be change on all three, while engine is down. > > > > > > > > > > > > Is it done by editing the VM libvirt conf file or some other way? > > > > > > > > > > > > Where do I allocate more RAM to JAVA for oVirt? > > > > You can control the values passed as -Xms and -Xmx using the config > > values ENGINE_HEAP_MIN and ENGINE_HEAP_MAX. > > > > They are set by engine-setup on initial setup but not changed later. > > It writes /etc/ovirt-engine/engine.conf.d/10-setup-java.conf . > > It's probably safer to create your own file for overriding, e.g. > > 99-my-setup-java.conf or something. > > > > There have been various relevant changes to this over the years, you > > can search bugzilla for 'ENGINE_HEAP_MIN' to find them. > > > > > > > > > > > > > > We are currently running 4.3.8 version. > > > > > > > > > > > > Kindly awaiting your reply. > > > > Good luck and best regards, > > -- > > Didi > > > > -- > Didi -- Didi

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[ANN] oVirt 4.4.5 Sixth Release Candidate is now available for testing
by Lev Veyde 22 Feb '21

22 Feb '21

oVirt 4.4.5 Sixth Release Candidate is now available for testing The oVirt Project is pleased to announce the availability of oVirt 4.4.5 Sixth Release Candidate for testing, as of February 18th, 2021. This update is the fifth in a series of stabilization updates to the 4.4 series. How to prevent hosts entering emergency mode after upgrade from oVirt 4.4.1 Note: Upgrading from 4.4.2 GA or later should not require re-doing these steps, if already performed while upgrading from 4.4.1 to 4.4.2 GA. These are only required to be done once. Due to Bug 1837864 <https://bugzilla.redhat.com/show_bug.cgi?id=1837864> - Host enter emergency mode after upgrading to latest build If you have your root file system on a multipath device on your hosts you should be aware that after upgrading from 4.4.1 to 4.4.5 you may get your host entering emergency mode. In order to prevent this be sure to upgrade oVirt Engine first, then on your hosts: 1. Remove the current lvm filter while still on 4.4.1, or in emergency mode (if rebooted). 2. Reboot. 3. Upgrade to 4.4.5 (redeploy in case of already being on 4.4.5). 4. Run vdsm-tool config-lvm-filter to confirm there is a new filter in place. 5. Only if not using oVirt Node: - run "dracut --force --add multipath” to rebuild initramfs with the correct filter configuration 6. Reboot. Documentation - If you want to try oVirt as quickly as possible, follow the instructions on the Download <https://ovirt.org/download/> page. - For complete installation, administration, and usage instructions, see the oVirt Documentation <https://ovirt.org/documentation/>. - For upgrading from a previous version, see the oVirt Upgrade Guide <https://ovirt.org/documentation/upgrade_guide/>. - For a general overview of oVirt, see About oVirt <https://ovirt.org/community/about.html>. Important notes before you try it Please note this is a pre-release build. The oVirt Project makes no guarantees as to its suitability or usefulness. This pre-release must not be used in production. Installation instructions For installation instructions and additional information please refer to: https://ovirt.org/documentation/ This release is available now on x86_64 architecture for: * Red Hat Enterprise Linux 8.3 or newer * CentOS Linux (or similar) 8.3 or newer This release supports Hypervisor Hosts on x86_64 and ppc64le architectures for: * Red Hat Enterprise Linux 8.3 or newer * CentOS Linux (or similar) 8.3 or newer * oVirt Node 4.4 based on CentOS Linux 8.3 (available for x86_64 only) See the release notes [1] for installation instructions and a list of new features and bugs fixed. Notes: - oVirt Appliance is already available for CentOS Linux 8 - oVirt Node NG is already available for CentOS Linux 8 - We found a few issues while testing on CentOS Stream so we are still basing oVirt 4.4.5 Node and Appliance on CentOS Linux. Additional Resources: * Read more about the oVirt 4.4.5 release highlights: http://www.ovirt.org/release/4.4.5/ * Get more oVirt project updates on Twitter: https://twitter.com/ovirt * Check out the latest project news on the oVirt blog: http://www.ovirt.org/blog/ [1] http://www.ovirt.org/release/4.4.5/ [2] http://resources.ovirt.org/pub/ovirt-4.4-pre/iso/ -- Lev Veyde Senior Software Engineer, RHCE | RHCVA | MCITP Red Hat Israel <https://www.redhat.com> lev(a)redhat.com | lveyde(a)redhat.com <https://red.ht/sig> TRIED. TESTED. TRUSTED. <https://redhat.com/trusted>

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Re: oVirt Engine increase RAM and CPU
by Yedidyah Bar David 22 Feb '21

22 Feb '21

On Mon, Feb 22, 2021 at 11:01 AM Vrgotic, Marko <M.Vrgotic(a)activevideo.com> wrote: > > Hi Didi, > > > > Just to be sure, considering its an HA instance, I need to set to maintenance=global and execute these changes – CPU increase will most likely require reboot? Please note that I do not have any experience with this whatsoever. Also for the further replies below. Just guessing. I suggest to try first on a test system if it's about a production/critical system. I guess that it will mark the VM as requiring a reboot for changes to take effect, and that they'll actually be applied only on hard-reboot (meaning, not just running 'reboot' from inside). So yes, I guess the process should be: 1. Edit as needed 2. Perhaps wait a bit or something like that to make sure changes reached OVF_STORE on the shared storage. No idea how. Perhaps we log enough about this to existing logs, or perhaps you can dump the conf to verify manually. 2. Set global maint, shutdown, clear global maint (and either immediately start the vm or let ha-agent do this for you). > > > > For the HEAP changes, I have been doing that lot on the Atlassian instances, just not sure how oVirt-engine is going to react and if there are any guidelines I should stick to in ovirt case. I have no idea other than the bugs I was personally involved with (which you can find in bugzilla). Perhaps RHV or oVirt docs have some guidelines, didn't check. If not, then I suppose the guidelines are "Use the defaults and follow recommendations", which mean: 1. Allocate 16GB RAM for the HE VM. Perhaps we even recommend more than that for larger setups, not sure. 2. engine-setup then sets both min and max to 4GB (=25% of RAM). If you do want to play with this, you should of course test thoroughly and carefully :-). Consider also other processes on the machine needing rather-large amounts of memory, including DWH and PostgreSQL (which we also automatically configure and which you can further refine if needed, and also set up to run on separate machines). > > I.e. What if I set min and max to same value? That's a question for the JVM, not for oVirt :-). I suppose it will simply use a constant size. > > Is it going to be “ok” if I assign more than half of system RAM to the JAVA? Ect… It should be, if you make sure other stuff (dwh+pg) do not use too much, or you have also enough swap (but then do not expect good performance if you actually run into actually using it). > > > > ----- > > kind regards/met vriendelijke groeten > > > > Marko Vrgotic > Sr. System Engineer @ System Administration > > > ActiveVideo > > o: +31 (35) 6774131 > > m: +31 (65) 5734174 > > e: m.vrgotic(a)activevideo.com > w: www.activevideo.com > > > > ActiveVideo Networks BV. Mediacentrum 3745 Joop van den Endeplein 1.1217 WJ Hilversum, The Netherlands. The information contained in this message may be legally privileged and confidential. It is intended to be read only by the individual or entity to whom it is addressed or by their designee. If the reader of this message is not the intended recipient, you are on notice that any distribution of this message, in any form, is strictly prohibited. If you have received this message in error, please immediately notify the sender and/or ActiveVideo Networks, LLC by telephone at +1 408.931.9200 and delete or destroy any copy of this message. > > > > > > > > From: Vrgotic, Marko <M.Vrgotic(a)activevideo.com> > Date: Monday, 22 February 2021 at 09:08 > To: Yedidyah Bar David <didi(a)redhat.com> > Cc: users(a)ovirt.org <users(a)ovirt.org> > Subject: Re: [ovirt-users] oVirt Engine increase RAM and CPU > > Thank you Didi. > > > > ----- > > kind regards/met vriendelijke groeten > > > > Marko Vrgotic > Sr. System Engineer @ System Administration > > > ActiveVideo > > o: +31 (35) 6774131 > > m: +31 (65) 5734174 > > e: m.vrgotic(a)activevideo.com > w: www.activevideo.com > > > > ActiveVideo Networks BV. Mediacentrum 3745 Joop van den Endeplein 1.1217 WJ Hilversum, The Netherlands. The information contained in this message may be legally privileged and confidential. It is intended to be read only by the individual or entity to whom it is addressed or by their designee. If the reader of this message is not the intended recipient, you are on notice that any distribution of this message, in any form, is strictly prohibited. If you have received this message in error, please immediately notify the sender and/or ActiveVideo Networks, LLC by telephone at +1 408.931.9200 and delete or destroy any copy of this message. > > > > > > > > From: Yedidyah Bar David <didi(a)redhat.com> > Date: Sunday, 21 February 2021 at 08:03 > To: Vrgotic, Marko <M.Vrgotic(a)activevideo.com> > Cc: users(a)ovirt.org <users(a)ovirt.org> > Subject: Re: [ovirt-users] oVirt Engine increase RAM and CPU > > ***CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you recognize the sender!!!*** > > On Fri, Feb 19, 2021 at 12:39 PM Vrgotic, Marko > <M.Vrgotic(a)activevideo.com> wrote: > > > > Hi oVirt, > > > > > > > > What is the cleanest way to increase the memory and cpu for SHE engine? > > Did you try to simply edit the vm from the admin ui? This should be > possible for most fields for quite some time now: > > https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fbugzilla.… > > > > > > > > > We have the Engine running on top of three HA hosts, so I guess the specs need to be change on all three, while engine is down. > > > > > > > > Is it done by editing the VM libvirt conf file or some other way? > > > > > > > > Where do I allocate more RAM to JAVA for oVirt? > > You can control the values passed as -Xms and -Xmx using the config > values ENGINE_HEAP_MIN and ENGINE_HEAP_MAX. > > They are set by engine-setup on initial setup but not changed later. > It writes /etc/ovirt-engine/engine.conf.d/10-setup-java.conf . > It's probably safer to create your own file for overriding, e.g. > 99-my-setup-java.conf or something. > > There have been various relevant changes to this over the years, you > can search bugzilla for 'ENGINE_HEAP_MIN' to find them. > > > > > > > > > We are currently running 4.3.8 version. > > > > > > > > Kindly awaiting your reply. > > Good luck and best regards, > -- > Didi -- Didi

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Re: oVirt Engine increase RAM and CPU
by Vrgotic, Marko 22 Feb '21

22 Feb '21

Hi Didi, Just to be sure, considering its an HA instance, I need to set to maintenance=global and execute these changes – CPU increase will most likely require reboot? For the HEAP changes, I have been doing that lot on the Atlassian instances, just not sure how oVirt-engine is going to react and if there are any guidelines I should stick to in ovirt case. I.e. What if I set min and max to same value? Is it going to be “ok” if I assign more than half of system RAM to the JAVA? Ect… ----- kind regards/met vriendelijke groeten Marko Vrgotic Sr. System Engineer @ System Administration ActiveVideo o: +31 (35) 6774131 m: +31 (65) 5734174 e: m.vrgotic(a)activevideo.com<mailto:m.vrgotic@activevideo.com> w: www.activevideo.com<http://www.activevideo.com> ActiveVideo Networks BV. Mediacentrum 3745 Joop van den Endeplein 1.1217 WJ Hilversum, The Netherlands. The information contained in this message may be legally privileged and confidential. It is intended to be read only by the individual or entity to whom it is addressed or by their designee. If the reader of this message is not the intended recipient, you are on notice that any distribution of this message, in any form, is strictly prohibited. If you have received this message in error, please immediately notify the sender and/or ActiveVideo Networks, LLC by telephone at +1 408.931.9200 and delete or destroy any copy of this message. From: Vrgotic, Marko <M.Vrgotic(a)activevideo.com> Date: Monday, 22 February 2021 at 09:08 To: Yedidyah Bar David <didi(a)redhat.com> Cc: users(a)ovirt.org <users(a)ovirt.org> Subject: Re: [ovirt-users] oVirt Engine increase RAM and CPU Thank you Didi. ----- kind regards/met vriendelijke groeten Marko Vrgotic Sr. System Engineer @ System Administration ActiveVideo o: +31 (35) 6774131 m: +31 (65) 5734174 e: m.vrgotic(a)activevideo.com<mailto:m.vrgotic@activevideo.com> w: www.activevideo.com<http://www.activevideo.com> ActiveVideo Networks BV. Mediacentrum 3745 Joop van den Endeplein 1.1217 WJ Hilversum, The Netherlands. The information contained in this message may be legally privileged and confidential. It is intended to be read only by the individual or entity to whom it is addressed or by their designee. If the reader of this message is not the intended recipient, you are on notice that any distribution of this message, in any form, is strictly prohibited. If you have received this message in error, please immediately notify the sender and/or ActiveVideo Networks, LLC by telephone at +1 408.931.9200 and delete or destroy any copy of this message. From: Yedidyah Bar David <didi(a)redhat.com> Date: Sunday, 21 February 2021 at 08:03 To: Vrgotic, Marko <M.Vrgotic(a)activevideo.com> Cc: users(a)ovirt.org <users(a)ovirt.org> Subject: Re: [ovirt-users] oVirt Engine increase RAM and CPU ***CAUTION: This email originated from outside of the organization. Do not click links or open attachments unless you recognize the sender!!!*** On Fri, Feb 19, 2021 at 12:39 PM Vrgotic, Marko <M.Vrgotic(a)activevideo.com> wrote: > > Hi oVirt, > > > > What is the cleanest way to increase the memory and cpu for SHE engine? Did you try to simply edit the vm from the admin ui? This should be possible for most fields for quite some time now: https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fbugzilla.… > > > > We have the Engine running on top of three HA hosts, so I guess the specs need to be change on all three, while engine is down. > > > > Is it done by editing the VM libvirt conf file or some other way? > > > > Where do I allocate more RAM to JAVA for oVirt? You can control the values passed as -Xms and -Xmx using the config values ENGINE_HEAP_MIN and ENGINE_HEAP_MAX. They are set by engine-setup on initial setup but not changed later. It writes /etc/ovirt-engine/engine.conf.d/10-setup-java.conf . It's probably safer to create your own file for overriding, e.g. 99-my-setup-java.conf or something. There have been various relevant changes to this over the years, you can search bugzilla for 'ENGINE_HEAP_MIN' to find them. > > > > We are currently running 4.3.8 version. > > > > Kindly awaiting your reply. Good luck and best regards, -- Didi

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Re: oVirt Engine increase RAM and CPU
by Yedidyah Bar David 22 Feb '21

22 Feb '21

On Fri, Feb 19, 2021 at 12:39 PM Vrgotic, Marko <M.Vrgotic(a)activevideo.com> wrote: > > Hi oVirt, > > > > What is the cleanest way to increase the memory and cpu for SHE engine? Did you try to simply edit the vm from the admin ui? This should be possible for most fields for quite some time now: https://bugzilla.redhat.com/show_bug.cgi?id=1160094 > > > > We have the Engine running on top of three HA hosts, so I guess the specs need to be change on all three, while engine is down. > > > > Is it done by editing the VM libvirt conf file or some other way? > > > > Where do I allocate more RAM to JAVA for oVirt? You can control the values passed as -Xms and -Xmx using the config values ENGINE_HEAP_MIN and ENGINE_HEAP_MAX. They are set by engine-setup on initial setup but not changed later. It writes /etc/ovirt-engine/engine.conf.d/10-setup-java.conf . It's probably safer to create your own file for overriding, e.g. 99-my-setup-java.conf or something. There have been various relevant changes to this over the years, you can search bugzilla for 'ENGINE_HEAP_MIN' to find them. > > > > We are currently running 4.3.8 version. > > > > Kindly awaiting your reply. Good luck and best regards, -- Didi

2 1

ovirt-vmconsole (serial console) dimensions and word wrap
by Kurt Myers 22 Feb '21

22 Feb '21

I frequently use the ovirt-vmconsole (serial console) to interact with my VMs. Is there a way to have ovirt-console recognize the terminal size automatically rather than defaulting to the standard 80 columns by 25 rows? If not, can the column/row size be adjusted globally (so the dimensions can be set once but persist for all console connected VMs)? Also, is there a way to enable word-wrap in the ovirt-vmconsole? Thanks! -Kurt-

1 0

Cannot startVM due to iso permission issue
by LS CHENG 21 Feb '21

21 Feb '21

Hi I have a brand new installation and I am trying to create a new VM, I have the Linux ISO uploaded to a NFS ISO Storage Domain but the VM refuses to start, I observe following error: *unable to open /rhev/data-center/mnt/LTST-VIRTMAN01:_ovirt_iso/a284c684-bfa2-49a1-b419-e81001b6196e/images/11111111-1111-1111-1111-111111111111/V1003434-01.iso: Permission denied* have tried to disable selinux just in case but without success. Any clues? Thanks

3 6

4.3 -> 4.4 upgrade question
by KSNull Zero 21 Feb '21

21 Feb '21

Hello! We have only one 4.3 cluster and try to upgrade it to 4.4. I believe that engine-setup change the Cluster Setting "Default Network Provider" to "ovirt-provider-ovn" during upgrade procedure. So then we add freshly reinstalled RH8 host back to this cluster the oVirt tries to configure OVN on that host. But we don't want to use OVN. Is it safe to change this setting back to "No Default Provider" and continue hosts upgrade process ? Thank you.

1 0