[ovirt-users] host timeout for remote colo

[Yaniv Kaul]

On Thu, Aug 24, 2017 at 9:55 PM, Bill James <bill.james at j2.com> wrote:

> We have an ovirt master (engine) host in Los Angeles and some remote
> servers in the UK.
> Normally they work fine, but when there is a heavy load on the UK servers
> the management engine has problems with heartbeat and ends up trying to
> restart the nodes.
>

Perhaps the mgmt interface is used for traffic other than mgmt? On small
scale it's OK. For bigger scale and workloads, it's best to separate
traffic to dedicated NICs.


>
> I saw in this thread that I can change vdsHeartbeatInSeconds (
> https://www.mail-archive.com/users@ovirt.org/msg41695.html)
> but I don't really want to change it globally, just for the nodes in UK.
> Also not sure how to get the current setting of that value, only how to
> change it. How do I tell current value?  I heard default is 30 seconds.
>

To change it:
usr/share/ovirt-engine/dbscripts/engine-psql.sh -c "update vdc_options set
option_value = 90 where option_name = 'vdsHeartbeatInSeconds'



>
> ovirt-engine-4.1.0.4-1.el7.centos.noarch
>

I recommend upgrade, though not specifically due to the above issue.


>
> Or maybe its not best practice to have a cluster that far from the engine?
>

We have an Engien in Israel managing hosts in Europe and the US.
Y.


>
>
> 2017-08-24 11:27:51,921-07 WARN [org.ovirt.engine.core.vdsbroker.VdsManager]
> (DefaultQuartzScheduler3) [feefbf3f-d0e2-4a64-b008-80838d04f130] Failed
> to refresh VDS, network error, continuing, vds='ovirt1.evuk.j2noc.com'(d0
> 482635-93fd-4cc3-9c78-523078845f11): VDSGenericException:
> VDSNetworkException: Heartbeat exceeded
>
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