The correct way to allow hosted engine to use other available gluster
peers in case of failure of the specified peer is to pass the
–config-append option during setup as described
https://ovirt.org/develop/release-management/features/ sla/self-hosted-engine- gluster-support/
If you want to change that now, then just edit the file
/etc/ovirt-hosted-engine/hosted-engine.conf on all hosts and add the
following line:
mnt_options=backup-volfile-servers=host02:host03
However note that for any new hosted engine deployments, the file has
to be manually edited.
> List Archives: https://lists.ovirt.org/On Wed, Jul 4, 2018 at 4:51 PM Liebe, André-Sebastian
<andre.liebe@gematik.de> wrote:
>
> Well, I though this wouldn’t be supported at the moment.
>
> But I seriously doubt changing this in engine’s SQL database will be a good idea at all, since the way hosted-engine’s configuration is shared across each node (/etc/ovirt-hosted-engine/hosted-engine.conf, /var/lib/ovirt-hsoted-engine- ha, configuration inside hosted-engine’s storage domain: hosted-engine.metadata)
>
>
>
> I had hoped hosted-engine or hosted-engine-setup cli could be extended to support this use case. I’m willing to help out testing any (manual) procedure to get this implemented (e.g. undeploy hosted-engine on two of three nodes, make changes to hosted-engine.metadata, hosted-engine.conf, start/stop hosted-engine, run SQL commands inside engine)
>
>
>
> Sincerely
>
> André
>
>
>
> Von: Renout Gerrits [mailto:mail@renout.nl]
> Gesendet: Mittwoch, 4. Juli 2018 12:04
> An: Liebe, André-Sebastian
> Cc: Gobinda Das; Alex K; users
> Betreff: Re: [ovirt-users] Re: hyperconverged cluster - how to change the mount path?
>
>
>
> unsupported, make backups, use at your own risk etc...
>
>
>
> you could update the db if you can't put the storage domain into maintenance
>
> after that put your hosts into maintenance and out again to remount
>
>
>
> find the id of the sd you want to update with:
>
> engine=# select * from storage_server_connections;
>
>
>
> ensure you have to correct id, the following should point to the old mount point:
>
> engine=# select connection from storage_server_connections where id='<id from output above>';
>
>
>
> next update your db
>
> engine=# update storage_server_connections set connection='<your new mount point' where id='<id from output above>';
>
>
>
>
>
>
>
> On Wed, Jul 4, 2018 at 9:13 AM, Liebe, André-Sebastian <andre.liebe@gematik.de> wrote:
>
> Yeah, sorry that doesn’t work.
>
> I can’t set hosted_storage (storage domain where hosted engine runs on) into maintenance mode to being able to edit it.
>
>
>
> André
>
>
>
> Von: Gobinda Das [mailto:godas@redhat.com]
> Gesendet: Montag, 2. Juli 2018 09:00
> An: Alex K
> Cc: Liebe, André-Sebastian; users
> Betreff: Re: [ovirt-users] Re: hyperconverged cluster - how to change the mount path?
>
>
>
> You can do it by using "Manage Domain" option from Starage Domain.
>
>
>
> On Sun, Jul 1, 2018 at 7:02 PM, Alex K <rightkicktech@gmail.com> wrote:
>
> The steps roughly would be to put that storage domain in maintenance then edit/redefine it. You have the option to set gluster mount point options for the redundancy part. No need to set dns round robin.
>
>
>
> Alex
>
>
>
> On Sun, Jul 1, 2018, 13:29 Liebe, André-Sebastian <andre.liebe@gematik.de> wrote:
>
> Hi list,
>
> I'm looking for an advice how to change the mount point of the hosted_storage due to a hostname change.
>
> When I set up our hyperconverged lab cluster (host1, host2, host3) I populated the mount path with host3:/hosted_storage which wasn't very clever as it brings in a single point of failure (i.e. when host3 is down).
> So I thought adding a round robin dns/hosts entry (i.e. gluster1) for host 1 to 3 and changing the mount path would be a better idea. But the mount path entry is locked in web gui and I couldn't find any hint how to change it manually (in database, shared and local configuration) in a consistent way without risking the cluster.
> So, is there a step by step guide how to achieve this without reinstalling (from backup)?
>
>
> Sincerely
>
> André-Sebastian Liebe
> Technik / Innovation
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> --
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> Thanks,
>
> Gobinda
>
>
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