[ovirt-users] Getting kdump integration to work

Tue May 26 13:04:39 UTC 2015

----- Original Message -----
> From: "Daniel Helgenberger" <daniel.helgenberger at m-box.de>
> To: "Martin Perina" <mperina at redhat.com>
> Cc: users at ovirt.org
> Sent: Tuesday, 26 May, 2015 2:40:23 PM
> Subject: Re: [ovirt-users] Getting kdump integration to work
> 
> 
> 
> On 26.05.2015 10:54, Martin Perina wrote:
> > Hi Daniel,
> Hello Martin,
> 
> >
> > ----- Original Message -----
> >> From: "Daniel Helgenberger" <daniel.helgenberger at m-box.de>
> >> To: users at ovirt.org
> >> Sent: Tuesday, 26 May, 2015 10:45:34 AM
> >> Subject: [ovirt-users] Getting kdump integration to work
> >>
> >> Hello,
> >>
> >> I followed the feature's page [1] and added to my test hosts the
> >> following lines /etc/kdump:
> >>
> >> fence_kdump_nodes othernode-in-cluster
> >> fence_kdump_args -p 7410 -f auto -i 5
> >
> > Please don't do this, this is added automatically when you deploy
> > you host using oVirt UI with "Kdump integration" enabled in PM tab
> > of the host.
> >
> >>
> >> Further, I added a firewall rule on both machines:
> >> -A INPUT -p udp --dport 7410 -j ACCEPT
> >
> > Same as above, this is needed only on engine hosts and it's done
> > automatically during oVirt engine installation.
> >
> >>
> >> and restarted kdump.
> >
> > Same as above, this is done automatically during host deploy.
> >
> >>
> >> Yet I get on the engine's side:
> >>
> >> 2015-05-26 10:41:54,113 WARN
> >> [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector]
> >> (ajp--127.0.0.1-8702-7) Correlation ID: null, Call Stack: null, Custom
> >> Event ID: -1, Message: Kdump integration is enabled for host 'hv02', but
> >> kdump is not configured properly on host.
> >
> > Could you please try to do it properly:
> >
> >    1. Put host to maintenance
> >    2. Enable "Kdump integration" in PM tab
> >    3. Reinstall the host (click Reinstall when you select the host in Hosts
> >    tab)
> 
> Thanks! This procedure seem to work, engine reporting kdump as activated.
> It was rather unclear to me, since I run hosted engine: After host
> deploy they are in the default state, no PM configured. Hence, kdump
> integration is disabled and will never activate since PM has to be
> configured in the first place to install.
> 
> Do you think it is a better idea to always activate kdump in the host
> deploy stage so it can later be activated correctly with PM configured?

Well, I've never tested kdump integration with hosted engine, so adding
Sandro to the thread.

I'm not sure if there's any value of Kdump integration for the hosted
engine itself, but if hosted engine behaves according to following
rules, you can be sure that your dump is not lost:

  1. When VM with hosted engine is migrated from dumping host to the
     another host, the VM should have the same FQDN.
     If not, then you will have to change FenceKdumpDestinationAddress
     parameter accordingly

  2. Also when VM with hosted engine is migrated to another host, not
     only ovirt-engine service has to started on it but also
     ovirt-fence-kdump-listener service has to be started

Martin Perina

> 
> >
> >
> > Thanks a lot
> >
> > Martin Perina
> Cheers!
> >
> >>
> >> Thanks!
> >>
> >> Versions:
> >> CentOS7.1 3.10.0-229.4.2.el7.x86_64 #1 SMP Wed May 13 10:06:09 UTC 2015
> >> x86_64 x86_64 x86_64 GNU/Linux
> >>
> >> ovirt-engine-cli-3.5.0.5-1.el7.centos.noarch
> >> ovirt-engine-userportal-3.5.2.1-1.el7.centos.noarch
> >> ovirt-engine-webadmin-portal-3.5.2.1-1.el7.centos.noarch
> >> ovirt-guest-agent-common-1.0.10-2.el7.noarch
> >> ovirt-engine-jboss-as-7.1.1-1.el7.x86_64
> >> ovirt-release35-004-1.noarch
> >> ovirt-engine-sdk-python-3.5.2.1-1.el7.centos.noarch
> >> ovirt-image-uploader-3.5.1-1.el7.centos.noarch
> >> ovirt-engine-setup-plugin-ovirt-engine-common-3.5.2.1-1.el7.centos.noarch
> >> ovirt-engine-websocket-proxy-3.5.2.1-1.el7.centos.noarch
> >> ovirt-host-deploy-java-1.3.1-1.el7.noarch
> >> ovirt-engine-reports-3.5.2-0.3.el7.centos.noarch
> >> ovirt-engine-dwh-setup-3.5.2-0.1.el7.centos.noarch
> >> ovirt-engine-tools-3.5.2.1-1.el7.centos.noarch
> >> ovirt-engine-setup-3.5.2.1-1.el7.centos.noarch
> >> ovirt-engine-restapi-3.5.2.1-1.el7.centos.noarch
> >> ovirt-engine-3.5.2.1-1.el7.centos.noarch
> >> ovirt-engine-setup-base-3.5.2.1-1.el7.centos.noarch
> >> ovirt-engine-setup-plugin-websocket-proxy-3.5.2.1-1.el7.centos.noarch
> >> ovirt-engine-reports-setup-3.5.2-0.3.el7.centos.noarch
> >> ovirt-engine-dwh-3.5.2-0.1.el7.centos.noarch
> >> ovirt-engine-dbscripts-3.5.2.1-1.el7.centos.noarch
> >> ovirt-engine-setup-plugin-ovirt-engine-3.5.2.1-1.el7.centos.noarch
> >> ovirt-engine-backend-3.5.2.1-1.el7.centos.noarch
> >> ovirt-iso-uploader-3.5.2-1.el7.centos.noarch
> >> ovirt-engine-extensions-api-impl-3.5.2.1-1.el7.centos.noarch
> >> ovirt-host-deploy-1.3.1-1.el7.noarch
> >> ovirt-engine-lib-3.5.2.1-1.el7.centos.noarch
> >>
> >>
> >> [1] http://www.ovirt.org/Fence_kdump
> >>
> >> --
> >> Daniel Helgenberger
> >> m box bewegtbild GmbH
> >>
> >> P: +49/30/2408781-22
> >> F: +49/30/2408781-10
> >>
> >> ACKERSTR. 19
> >> D-10115 BERLIN
> >>
> >>
> >> www.m-box.de  www.monkeymen.tv
> >>
> >> Geschäftsführer: Martin Retschitzegger / Michaela Göllner
> >> Handeslregister: Amtsgericht Charlottenburg / HRB 112767
> >> _______________________________________________
> >> Users mailing list
> >> Users at ovirt.org
> >> http://lists.ovirt.org/mailman/listinfo/users
> >>
> >
> 
> --
> Daniel Helgenberger
> m box bewegtbild GmbH
> 
> P: +49/30/2408781-22
> F: +49/30/2408781-10
> 
> ACKERSTR. 19
> D-10115 BERLIN
> 
> 
> www.m-box.de  www.monkeymen.tv
> 
> Geschäftsführer: Martin Retschitzegger / Michaela Göllner
> Handeslregister: Amtsgericht Charlottenburg / HRB 112767
> 