[ovirt-users] Re: Change hostname of physical hosts under an oVirt and Gluster combination

Hey Sahina, Thanks very much. I've taken a quick glance and it does mention I need a third host which I don't have. However, since I wrote, I removed everything. Had to force remove hosts however the gluster setup and data in it stayed (Or so I'm thinking). I'll read the article more thoroughly however is there a specific procedure for adding existing oVirt gluster volumes back into a cluster? One additional question. Is the sequence below correct? 1) Create Data Center 2) Create Cluster within the DC 3) Create a Domain within the Cluster 4) Add hosts to DC 5) Import Gluster Volume Some issues. I create a DC, add a Cluster then add the Host to it. Then I try to add another the second node but it says It's already in a cluster. There is no other cluster and the second host is not listed anywhere. So I try to remove the first host to restart from the beginning. It says I can't remove the only host now till it's in maintenance. Maintenance is grayed out. I wait a bit guessing there's background processes running and can finally remove to readd. When I try to redo the operation and get to the step of adding another host, I get: "Error while executing action: Server mdskvm-p02.nix.mds.xyz is already part of another cluster." But I can clearly see it's not there via another oVirt UI window. oVirt: ovirt-engine-4.2.1.7-1.el7.centos.noarch Hosts: root@mdskvm-p01: ovirt-host-4.2.3-1.el7.x86_64 root@mdskvm-p02: ovirt-host-4.2.3-1.el7.x86_64 System prevents me from removing and restarting the process again with a: Failed Deleting Gluster Volume mdsgv01 Logs show: 2019-09-24 09:07:26,765-04 INFO [org.ovirt.engine.core.vdsbroker.gluster.GlusterServersListVDSCommand] (default task-54) [7186786c-6e3f-4c48-858e-4e404e68d130] START, GlusterServersListVDSCommand(HostName = mdskvm-p01.nix.mds.xyz, VdsIdVDSCommandParametersBase:{hostId='0c3943d4-b95a-41f4-bb9c-30731128e057'}), log id: 50f2b07d 2019-09-24 09:07:26,948-04 INFO [org.ovirt.engine.core.vdsbroker.gluster.DeleteGlusterVolumeVDSCommand] (EE-ManagedThreadFactory-engine-Thread-348908) [7c0605a8-afe1-49a1-ad8f-299ca40a805d] FINISH, DeleteGlusterVolumeVDSCommand, log id: 1e8800f1 2019-09-24 09:07:26,954-04 ERROR [org.ovirt.engine.core.dal.dbbroker.auditloghandling.AuditLogDirector] (EE-ManagedThreadFactory-engine-Thread-348908) [7c0605a8-afe1-49a1-ad8f-299ca40a805d] EVENT_ID: GLUSTER_VOLUME_DELETE_FAILED(4,011), Could not delete Gluster Volume mdsgv01 on cluster NIX-DC. 2019-09-24 09:07:26,960-04 INFO [org.ovirt.engine.core.bll.gluster.DeleteGlusterVolumeCommand] (EE-ManagedThreadFactory-engine-Thread-348908) [7c0605a8-afe1-49a1-ad8f-299ca40a805d] Lock freed to object 'EngineLock:{exclusiveLocks='[f8686ba2-2e9b-499b-9d2f-050e3425ec9e=GLUSTER]', sharedLocks=''}' 2019-09-24 09:07:26,963-04 INFO [org.ovirt.engine.core.vdsbroker.gluster.GlusterVolumesListVDSCommand] (DefaultQuartzScheduler6) [51432e7f] START, GlusterVolumesListVDSCommand(HostName = mdskvm-p01.nix.mds.xyz, GlusterVolumesListVDSParameters:{hostId='0c3943d4-b95a-41f4-bb9c-30731128e057'}), log id: 34d8d3d9 2019-09-24 09:07:27,386-04 WARN [org.ovirt.engine.core.vdsbroker.gluster.GlusterVolumesListReturn] (DefaultQuartzScheduler6) [51432e7f] Could not add brick 'mdskvm-p02.nix.mds.xyz:/mnt/p02-d01/glusterv02' to volume 'f5b57076-dbd4-4d77-ae13-c1f3ee3adbe0' - server uuid 'ad7d956a-a121-422e-8c5c-56765bdf6a62' not found in cluster 'f8686ba2-2e9b-499b-9d2f-050e3425ec9e' Cheers, TK On 9/24/2019 5:17 AM, Sahina Bose wrote: -- Thx, TK.