Re: [ovirt-users] Katello integration
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Hi, I just wanted to say that this is a very cool and useful feature! Sadly, CentOS still does not provide the errata information, because red hat has no datasource that CentOS can use (at least that's my last information from the centos devel list). - -- Mit freundlichen Grüßen / Regards Sven Kieske Systemadministrator Mittwald CM Service GmbH Co. KG Königsberger Straße 6 32339 Espelkamp T: +49-5772-293-100 F: +49-5772-293-333 https://www.mittwald.de Geschäftsführer: Robert Meyer St.Nr.: 331/5721/1033, USt-IdNr.: DE814773217, HRA 6640, AG Bad Oeynhaus en Komplementärin: Robert Meyer Verwaltungs GmbH, HRB 13260, AG Bad Oeynhausen -BEGIN PGP SIGNATURE- Version: GnuPG v2.0.22 (GNU/Linux) iQIcBAEBAgAGBQJVdUHxAAoJEMby9TMDAbQR7KQP/3qxnqNXiqJrrY3bPfb+Y3Px NaPphKw9zMzA5e+EptDb6HuV+elGCv7A9KnlLUSqO7Al17nA5d4HGTc2INrPXHUq Vg76/6js/ld46ytcgaeWk+Fp6xQu/jkWjG7tnhtQerfVR+aN+G02CR+4EsaU1gf9 ADLrIXSjgQKFF+AjipuhXoEfYYhgygf75+P0WY6VdJ+87fozrL16QjFa9ZZvnHdo 3DI/x/LAHQBz3rvwBG0mdnEbjlep2fefdPZO/cOQKfJoKIDLJSRTuqsZaGsLvP/Z YCl/+JofdtmPdQivgDo52dNVgBd4FoIh7xTUdIuu7x+Oju7Nr7LbVKFFEgy9wFup C+ywU6Ah/RM3dywCKDG7U47i84mtnm7Du8RIbVR81A27ZWTEAYF72hGBAxr1Ize6 YZ/jmhtFTBYDYuxeeGMCVJmOTgkLduIbHfxdBYpQ5BUDlQZL0b03WTqpJ0RCBeqA slsJ7pdTUgCXe1PKVPtEf+6buea9ELnVVI8QMkBUKrXv2szKG52ECITxnXxR7nLa NC7EGr7NZmmYBDPCp7b6RDP4wlBwYdK7IdFcMQMJL6tLeSwICUOuPHXNi3dXxAGD fS84wiriuj8Z0Km3odx3wcjP0AyMIPNdvpmukqRIYKiPt6dtum78qCH9JWibhxT0 9zA6llDB/bZpzOeZW/Vg =xPE/ -END PGP SIGNATURE- ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Re: [ovirt-users] [Gluster-users] HA storage based on two nodes with one point of failure
2015-06-08 8:32 GMT+03:00 Ravishankar N ravishan...@redhat.com: On 06/08/2015 02:38 AM, Юрий Полторацкий wrote: Hi, I have made a lab with a config listed below and have got unexpected result. Someone, tell me, please, where did I go wrong? I am testing oVirt. Data Center has two clusters: the first as a computing with three nodes (node1, node2, node3); the second as a storage (node5, node6) based on glusterfs (replica 2). I want the storage to be HA. I have read here https://access.redhat.com/documentation/en-US/Red_Hat_Storage/3/html/Administration_Guide/sect-Managing_Split-brain.html next: For a replicated volume with two nodes and one brick on each machine, if the server-side quorum is enabled and one of the nodes goes offline, the other node will also be taken offline because of the quorum configuration. As a result, the high availability provided by the replication is ineffective. To prevent this situation, a dummy node can be added to the trusted storage pool which does not contain any bricks. This ensures that even if one of the nodes which contains data goes offline, the other node will remain online. Note that if the dummy node and one of the data nodes goes offline, the brick on other node will be also be taken offline, and will result in data unavailability. So, I have added my Engine (not self-hosted) as a dummy node without a brick and have configured quorum as listed below: cluster.quorum-type: fixed cluster.quorum-count: 1 cluster.server-quorum-type: server cluster.server-quorum-ratio: 51% Then, I've run a VM and have dropped the network link from node6, after one a hour have switched back the link and after a while have got a split-brain. But why? No one could write to the brick on node6: the VM was running on node3 and node1 was SPM. It could have happened that after node6 came up, the client(s) saw a temporary disconnect of node 5 and a write happened at that time. When the node 5 is connected again, we have AFR xattrs on both nodes blaming each other, causing split-brain. For a replica 2 setup. it is best to set the client-quorum to auto instead of fixed. What this means is that the first node of the replica must always be up for writes to be permitted. If the first node goes down, the volume becomes read-only. Yes, at first I have tested with client-quorum auto, but my VMs has been paused when the first node goes down and this is not unacceptable Ok, I understood: there is now way to have fault tolerance storage with only two servers using GlusterFS. I have to get another one. Thanks. For better availability , it would be better to use a replica 3 volume with (again with client-quorum set to auto). If you are using glusterfs 3.7, you can also consider using the arbiter configuration [1] for replica 3. [1] https://github.com/gluster/glusterfs/blob/master/doc/features/afr-arbiter-volumes.md Thanks, Ravi Gluster's log from node6: Июн 07 15:35:06 node6.virt.local etc-glusterfs-glusterd.vol[28491]: [2015-06-07 12:35:06.106270] C [MSGID: 106002] [glusterd-server-quorum.c:356:glusterd_do_volume_quorum_action] 0-management: Server quorum lost for volume vol3. Stopping local bricks. Июн 07 16:30:06 node6.virt.local etc-glusterfs-glusterd.vol[28491]: [2015-06-07 13:30:06.261505] C [MSGID: 106003] [glusterd-server-quorum.c:351:glusterd_do_volume_quorum_action] 0-management: Server quorum regained for volume vol3. Starting local bricks. gluster volume heal vol3 info Brick node5.virt.local:/storage/brick12/ /5d0bb2f3-f903-4349-b6a5-25b549affe5f/dom_md/ids - Is in split-brain Number of entries: 1 Brick node6.virt.local:/storage/brick13/ /5d0bb2f3-f903-4349-b6a5-25b549affe5f/dom_md/ids - Is in split-brain Number of entries: 1 gluster volume info vol3 Volume Name: vol3 Type: Replicate Volume ID: 69ba8c68-6593-41ca-b1d9-40b3be50ac80 Status: Started Number of Bricks: 1 x 2 = 2 Transport-type: tcp Bricks: Brick1: node5.virt.local:/storage/brick12 Brick2: node6.virt.local:/storage/brick13 Options Reconfigured: storage.owner-gid: 36 storage.owner-uid: 36 cluster.server-quorum-type: server cluster.quorum-type: fixed network.remote-dio: enable cluster.eager-lock: enable performance.stat-prefetch: off performance.io-cache: off performance.read-ahead: off performance.quick-read: off auth.allow: * user.cifs: disable nfs.disable: on performance.readdir-ahead: on cluster.quorum-count: 1 cluster.server-quorum-ratio: 51% 06.06.2015 12:09, Юрий Полторацкий пишет: Hi, I want to build a HA storage based on two servers. I want that if one goes down, my storage will be available in RW mode. If I will use replica 2, then split-brain can occur. To avoid this I would use a quorum. As I understand correctly, I can use quorum on a client side, on a server side, or on both. I want to add a dummy node without a brick and make such config: cluster.quorum-type: fixed
Re: [ovirt-users] Comma Seperated Value doesn't accept by custom properties
On Mon, Jun 08, 2015 at 11:15:45AM +0800, Punit Dambiwal wrote: Hi Dan, The results are below :- [root@mgmt ~]# engine-config -g UserDefinedVMProperties UserDefinedVMProperties: version: 3.0 UserDefinedVMProperties: version: 3.1 UserDefinedVMProperties: version: 3.2 UserDefinedVMProperties: version: 3.3 UserDefinedVMProperties: version: 3.4 UserDefinedVMProperties: noipspoof=^[0-9.]*$ version: 3.5 [root@mgmt ~]# I used the following command to set this :- [root@mgmt ~]# engine-config -s UserDefinedVMProperties=noipspoof=^[0-9.]*$ oops, please add a coma character inside the brackets. If it works, please mark https://gerrit.ovirt.org/42031 as verified. ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Re: [ovirt-users] Move VirtIO disk to External LUN disk
On 06.06.2015 17:48, Juan Carlos YJ. Lin wrote: I have performance issue with the VirtIO disks and like to move it to External LUN on the ISCI storage What version are you using? I assume here 3.5. Do you want the disk image moved or the *content* of the image moved to your iscsi lun so the VM boots off directly from the lun? The first thing is quite easy and I assume this: to use the ISCSI pathtrought How I can do that? 1. connect your LUN to your hosts, - In the GUI, 2. create a new iscsi Storage domain on it, 3. Shut down the affected VM, 4. Navigate to the disk tap, select the affected disks, right-click - move disk (or select several and use the button). In the pop up window, select the target storage domain (your new iscsi LUN). The SPM host will now do the moving using the qemu-img or dd command depending on your ovirt version. Note, if the source domain was NFS, your images are converted from files to block storage, with all the pros and cons. Hope that helps, Juan Carlos Lin Unisoft S.A. +595-993-288330 System-wide Disclaimer --- Antes de imprimir, recuérdese de su compromiso con el Medio Ambiente Aviso: Este mensaje es dirigido para su destinatario y contiene informaciones que no pueden ser usadas por otras personas que no sean su(s) destinatario(s). La retransmisión del contenido no está autorizada fuera del contexto de su envío y a quien corresponde. El uso no autorizado de la información en este mensaje se halla penado por las leyes vigentes en todo el mundo. Si ha recibido este mensaje por error, por favor bórrala y notifique al remitente en la brevedad posible. El contenido de este mensaje no es responsabilidad de la Empresa y debe ser atribuido siempre a su autor. Gracias. -- Daniel Helgenberger m box bewegtbild GmbH P: +49/30/2408781-22 F: +49/30/2408781-10 ACKERSTR. 19 D-10115 BERLIN www.m-box.de www.monkeymen.tv Geschäftsführer: Martin Retschitzegger / Michaela Göllner Handeslregister: Amtsgericht Charlottenburg / HRB 112767 ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Re: [ovirt-users] Comma Seperated Value doesn't accept by custom properties
Hi Dan, Can save now the comma separate ip address...but still the problem persists 1. If one Network interface...i can add multiple ip addresses with comma separated... 2. But if i add another network interface to this VMVM cannot boot up... 3. What need to do if i want to assign multiple ip address on multiple network interface ?? Thanks, Punit On Mon, Jun 8, 2015 at 4:54 PM, Dan Kenigsberg dan...@redhat.com wrote: On Mon, Jun 08, 2015 at 11:15:45AM +0800, Punit Dambiwal wrote: Hi Dan, The results are below :- [root@mgmt ~]# engine-config -g UserDefinedVMProperties UserDefinedVMProperties: version: 3.0 UserDefinedVMProperties: version: 3.1 UserDefinedVMProperties: version: 3.2 UserDefinedVMProperties: version: 3.3 UserDefinedVMProperties: version: 3.4 UserDefinedVMProperties: noipspoof=^[0-9.]*$ version: 3.5 [root@mgmt ~]# I used the following command to set this :- [root@mgmt ~]# engine-config -s UserDefinedVMProperties=noipspoof=^[0-9.]*$ oops, please add a coma character inside the brackets. If it works, please mark https://gerrit.ovirt.org/42031 as verified. ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Re: [ovirt-users] Questions about Spice Proxy
Hi Kevin, The ports that the proxy is listening on is up to you, 3128 and 8080 are the usual ports. What you need to set up on the proxy is to allow connection to ports 5900-6123 of the hosts (host display network NICs if you use display network). David On Pá, 2015-06-05 at 10:38 +0200, Kevin COUSIN wrote: Hi list, Hi try to setup a SPICE Proxy with HAproxy. It works fine for the WebUI. I define the proxy with engine-config -s SpiceProxyDefault=http://mygreatproxy.tld:8080;. The connections are going on the nodes with the same port (here 8080 or 3128 line in documentation) or on the engine ? Need I to install a squid proxy instead of HAproxy ? Regards Kevin C. ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Re: [ovirt-users] [Gluster-users] HA storage based on two nodes with one point of failure
On 06/08/2015 02:38 AM, Юрий Полторацкий wrote: Hi, I have made a lab with a config listed below and have got unexpected result. Someone, tell me, please, where did I go wrong? I am testing oVirt. Data Center has two clusters: the first as a computing with three nodes (node1, node2, node3); the second as a storage (node5, node6) based on glusterfs (replica 2). I want the storage to be HA. I have read here https://access.redhat.com/documentation/en-US/Red_Hat_Storage/3/html/Administration_Guide/sect-Managing_Split-brain.html next: For a replicated volume with two nodes and one brick on each machine, if the server-side quorum is enabled and one of the nodes goes offline, the other node will also be taken offline because of the quorum configuration. As a result, the high availability provided by the replication is ineffective. To prevent this situation, a dummy node can be added to the trusted storage pool which does not contain any bricks. This ensures that even if one of the nodes which contains data goes offline, the other node will remain online. Note that if the dummy node and one of the data nodes goes offline, the brick on other node will be also be taken offline, and will result in data unavailability. So, I have added my Engine (not self-hosted) as a dummy node without a brick and have configured quorum as listed below: cluster.quorum-type: fixed cluster.quorum-count: 1 cluster.server-quorum-type: server cluster.server-quorum-ratio: 51% Then, I've run a VM and have dropped the network link from node6, after one a hour have switched back the link and after a while have got a split-brain. But why? No one could write to the brick on node6: the VM was running on node3 and node1 was SPM. It could have happened that after node6 came up, the client(s) saw a temporary disconnect of node 5 and a write happened at that time. When the node 5 is connected again, we have AFR xattrs on both nodes blaming each other, causing split-brain. For a replica 2 setup. it is best to set the client-quorum to auto instead of fixed. What this means is that the first node of the replica must always be up for writes to be permitted. If the first node goes down, the volume becomes read-only. For better availability , it would be better to use a replica 3 volume with (again with client-quorum set to auto). If you are using glusterfs 3.7, you can also consider using the arbiter configuration [1] for replica 3. [1] https://github.com/gluster/glusterfs/blob/master/doc/features/afr-arbiter-volumes.md Thanks, Ravi Gluster's log from node6: Июн 07 15:35:06 node6.virt.local etc-glusterfs-glusterd.vol[28491]: [2015-06-07 12:35:06.106270] C [MSGID: 106002] [glusterd-server-quorum.c:356:glusterd_do_volume_quorum_action] 0-management: Server quorum lost for volume vol3. Stopping local bricks. Июн 07 16:30:06 node6.virt.local etc-glusterfs-glusterd.vol[28491]: [2015-06-07 13:30:06.261505] C [MSGID: 106003] [glusterd-server-quorum.c:351:glusterd_do_volume_quorum_action] 0-management: Server quorum regained for volume vol3. Starting local bricks. gluster volume heal vol3 info Brick node5.virt.local:/storage/brick12/ /5d0bb2f3-f903-4349-b6a5-25b549affe5f/dom_md/ids - Is in split-brain Number of entries: 1 Brick node6.virt.local:/storage/brick13/ /5d0bb2f3-f903-4349-b6a5-25b549affe5f/dom_md/ids - Is in split-brain Number of entries: 1 gluster volume info vol3 Volume Name: vol3 Type: Replicate Volume ID: 69ba8c68-6593-41ca-b1d9-40b3be50ac80 Status: Started Number of Bricks: 1 x 2 = 2 Transport-type: tcp Bricks: Brick1: node5.virt.local:/storage/brick12 Brick2: node6.virt.local:/storage/brick13 Options Reconfigured: storage.owner-gid: 36 storage.owner-uid: 36 cluster.server-quorum-type: server cluster.quorum-type: fixed network.remote-dio: enable cluster.eager-lock: enable performance.stat-prefetch: off performance.io-cache: off performance.read-ahead: off performance.quick-read: off auth.allow: * user.cifs: disable nfs.disable: on performance.readdir-ahead: on cluster.quorum-count: 1 cluster.server-quorum-ratio: 51% 06.06.2015 12:09, Юрий Полторацкий пишет: Hi, I want to build a HA storage based on two servers. I want that if one goes down, my storage will be available in RW mode. If I will use replica 2, then split-brain can occur. To avoid this I would use a quorum. As I understand correctly, I can use quorum on a client side, on a server side, or on both. I want to add a dummy node without a brick and make such config: cluster.quorum-type: fixed cluster.quorum-count: 1 cluster.server-quorum-type: server cluster.server-quorum-ratio: 51% I expect that client will have access in RW mode until one brick alive. On the other side if server's quorum will not meet, then bricks will be RO. Say, HOST1 with a brick BRICK1, HOST2 with a brick BRICK2, and HOST3 without a brick. Once HOST1 lose a network connection, than on this node server quorum will not meet
Re: [ovirt-users] Comma Seperated Value doesn't accept by custom properties
On Mon, Jun 08, 2015 at 05:43:40PM +0800, Punit Dambiwal wrote: Hi Dan, Can save now the comma separate ip address...but still the problem persists 1. If one Network interface...i can add multiple ip addresses with comma separated... 2. But if i add another network interface to this VMVM cannot boot up... 3. What need to do if i want to assign multiple ip address on multiple network interface ?? Can you share your vdsm.log of this boot failure? Regards, Dan. ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
