[ovirt-users] 回复：Re: ovirt engine HA

Mon Apr 9 09:59:43 UTC 2018

Hi,

The idea with the HA self-hosted engine is that it is able to migrate to another host, should it be required. Therefore in order to run the engine as “highly available”, you will need at least two Hosted Engine Hosts in your setup. One, however, is enough to host the engine, but you will lose the ability to migrate the engine to another server, if you need to maintain the Hosted Engine Host.

//Mike

From: users-bounces at ovirt.org [mailto:users-bounces at ovirt.org] On Behalf Of dhy336 at sina.com
Sent: 8. april 2018 08:47
To: Alex K <rightkicktech at gmail.com>; FERNANDO FREDIANI <fernando.frediani at upx.com>
Cc: users <users at ovirt.org>
Subject: [ovirt-users] 回复：Re: ovirt engine HA

Hi, I hava two node, and deploy hosted-engine by #hosted-engine --deploy, I do not understand what should I do?

----- 原始邮件 -----
发件人：Alex K <rightkicktech at gmail.com>
收件人：FERNANDO FREDIANI <fernando.frediani at upx.com>
抄送人：users <users at ovirt.org>
主题：Re: [ovirt-users] ovirt engine HA
日期：2018年04月04日 01点40分

In case you need HA for the engine you need to deploy it to other hosts also through the GUI.

On Tue, Apr 3, 2018 at 4:47 PM, FERNANDO FREDIANI <fernando.frediani at upx.com<mailto:fernando.frediani at upx.com>> wrote:
Is it enough to deploy the Self-Hosted engine in just one Host of the cluster or is it necessary to repeat the process in each of the nodes that must be able to run it ?
Thanks
Fernando

2018-04-03 2:01 GMT-03:00 Vincent Royer <vincent at epicenergy.ca<mailto:vincent at epicenergy.ca>>:
Same thing, the engine in this case is "self-hosted", as in, it runs in a VM hosted on the cluster that it is managing.  I am a beginner here, but from my understanding, each node is always checking on the health of the engine VM.  If the engine is missing (ie, the host running it has gone down), then another available, healthy host will spawn up the engine and you will regain access.

In my experience this has worked very reliably.  I have 2 hosts, both are "able" to run the engine VM.  If I take one host down, I am not able to load the engine GUI.  But if I wait a few minutes, then I regain access, and see that the engine is now running on the remaining healthy host.

Vincent Royer
778-825-1057<tel:(778)%20825-1057>

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<http://www.epicenergy.ca/>
SUSTAINABLE MOBILE ENERGY SOLUTIONS

On Mon, Apr 2, 2018 at 6:07 PM, <dhy336 at sina.com<mailto:dhy336 at sina.com>> wrote:
what different between self-hosted engine and  hosted engine? I find a project
ovirt-hosted-engine-ha<https://github.com/oVirt/ovirt-hosted-engine-ha>  https://github.com/oVirt/ovirt-hosted-engine-ha
----- 原始邮件 -----
发件人：Vincent Royer <vincent at epicenergy.ca<mailto:vincent at epicenergy.ca>>
收件人：dhy336 at sina.com<mailto:dhy336 at sina.com>
抄送人：users <users at ovirt.org<mailto:users at ovirt.org>>
主题：Re: [ovirt-users] ovirt engine HA
日期：2018年04月03日 08点57分

If your node running self-hosted engine crashes, the hosted engine will be started up on another node. It just takes a few minutes for this all to happen, but it works reliably in my experience.

On Mon, Apr 2, 2018 at 5:42 PM, <dhy336 at sina.com<mailto:dhy336 at sina.com>> wrote:
How to solute ovirt engine HA, I have a three node cluster, one of is deploy engine and node , others are node, if node that deplay engine and  node crash, How to ensure my server is up?
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