--=-EaC1hOOG3Eik5S0hXrkq Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hello John, On Mi, 2014-07-23 at 19:47 -0400, Jason Brooks wrote:
=20 ----- Original Message -----
From: "John Gardeniers" <jgardeniers@objectmastery.com> To: "users" <users@ovirt.org> Sent: Wednesday, July 23, 2014 4:29:45 PM Subject: [ovirt-users] Self-hosted engine won't start =20 Hi All, =20 I have created a lab with 2 hypervisors and a self-hosted engine. Today I followed the upgrade instructions as described in http://www.ovirt.org/Hosted_Engine_Howto and rebooted the engine. I didn't really do an upgrade but simply wanted to test what would happen when the engine was rebooted. =20 When the engine didn't restart I re-ran hosted-engine --set-maintenance=3Dnone and restarted the vdsm, ovirt-ha-agent and ovirt-ha-broker services on both nodes. 15 minutes later it still hadn'= t restarted, so I then tried rebooting both hypervisers. After an hour there was still no sign of the engine starting. The agent logs don't help me much. The following bits are repeated over and over. =20 ovirt1 (192.168.19.20): =20 MainThread::INFO::2014-07-24 09:18:40,272::brokerlink::108::ovirt_hosted_engine_ha.lib.brokerlink.Br= okerLink::(notify) Trying: notify time=3D1406157520.27 type=3Dstate_transition detail=3DEngineDown-EngineDown hostname=3D'ovirt1.om.net' MainThread::INFO::2014-07-24 09:18:40,272::brokerlink::117::ovirt_hosted_engine_ha.lib.brokerlink.Br= okerLink::(notify) Success, was notification of state_transition (EngineDown-EngineDown) sent? ignored MainThread::INFO::2014-07-24 09:18:40,594::hosted_engine::327::ovirt_hosted_engine_ha.agent.hosted_e= ngine.HostedEngine::(start_monitoring) Current state EngineDown (score: 2400) MainThread::INFO::2014-07-24 09:18:40,594::hosted_engine::332::ovirt_hosted_engine_ha.agent.hosted_e= ngine.HostedEngine::(start_monitoring) Best remote host 192.168.19.21 (id: 2, score: 2400) =20 ovirt2 (192.168.19.21): =20 MainThread::INFO::2014-07-24 09:18:04,005::brokerlink::108::ovirt_hosted_engine_ha.lib.brokerlink.Br= okerLink::(notify) Trying: notify time=3D1406157484.01 type=3Dstate_transition detail=3DEngineDown-EngineDown hostname=3D'ovirt2.om.net' MainThread::INFO::2014-07-24 09:18:04,006::brokerlink::117::ovirt_hosted_engine_ha.lib.brokerlink.Br= okerLink::(notify) Success, was notification of state_transition (EngineDown-EngineDown) sent? ignored MainThread::INFO::2014-07-24 09:18:04,324::hosted_engine::327::ovirt_hosted_engine_ha.agent.hosted_e= ngine.HostedEngine::(start_monitoring) Current state EngineDown (score: 2400) MainThread::INFO::2014-07-24 09:18:04,324::hosted_engine::332::ovirt_hosted_engine_ha.agent.hosted_e= ngine.HostedEngine::(start_monitoring) Best remote host 192.168.19.20 (id: 1, score: 2400) =20 From the above information I decided to simply shut down one hypervisor and see what happens. The engine did start back up again a few minutes later. =20 I've seen this behavior, too. =20 Jason =20 =20 The interesting part is that each hypervisor seems to think the other i= s a better host.=20 Where do you get this from? From the line:=20 'Best remote host 192.168.19.20 (id: 1, score: 2400)' ?
I assume this is not the case; HA broker just looking for the best remote candidate.=20 But I have also trouble with this behavior; esp. when I had the cluster in global maintenance. I resolve this by stating hosted engine manually in in global maintenance and waiting for {"health": "good", "vm": "up", "detail": "up"} and disabling global maintenance afterwards. I found the HA feature is indeed working - and tried out best by manually stopping the engine service (service hosted-engine stop). IIRC This should trigger a failover and reboot of the engine.
The two machines are identical, so there's no reason I
can see for this odd behaviour. In a lab environment this is little mor= e than an annoying inconvenience. In a production environment it would be completely unacceptable. =20 May I suggest that this issue be looked into and some means found to eliminate this kind of mutual exclusion? e.g. After a few minutes of such an issue one hypervisor could be randomly given a slightly higher weighting, which should result in it being chosen to start the engine. =20 regards, John _______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users =20
Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Cheers,=20 Daniel --=20 Daniel Helgenberger=20 m box bewegtbild GmbH=20 P: +49/30/2408781-22 F: +49/30/2408781-10 ACKERSTR. 19=20 D-10115 BERLIN=20 www.m-box.de www.monkeymen.tv=20 Gesch=C3=A4ftsf=C3=BChrer: Martin Retschitzegger / Michaela G=C3=B6llner Handeslregister: Amtsgericht Charlottenburg / HRB 112767=20 --=-EaC1hOOG3Eik5S0hXrkq Content-Type: application/x-pkcs7-signature; name="smime.p7s" Content-Disposition: attachment; filename="smime.p7s" Content-Transfer-Encoding: base64 MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIIN9zCCBFcw ggM/oAMCAQICCwQAAAAAAS9O4TFGMA0GCSqGSIb3DQEBBQUAMFcxCzAJBgNVBAYTAkJFMRkwFwYD VQQKExBHbG9iYWxTaWduIG52LXNhMRAwDgYDVQQLEwdSb290IENBMRswGQYDVQQDExJHbG9iYWxT aWduIFJvb3QgQ0EwHhcNMTEwNDEzMTAwMDAwWhcNMTkwNDEzMTAwMDAwWjBUMQswCQYDVQQGEwJC RTEZMBcGA1UEChMQR2xvYmFsU2lnbiBudi1zYTEqMCgGA1UEAxMhR2xvYmFsU2lnbiBQZXJzb25h bFNpZ24gMiBDQSAtIEcyMIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAwWtB+TXs+BJ9 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