- Users - oVirt List Archives

Unable to use the SPICE HTML5 tool
by Nicolás 11 Jun '15

11 Jun '15

This is a multi-part message in MIME format. --------------040801010109090109090703 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Hi, I'm using oVirt 3.5.2 on a CentOS box. As far as the engine goes everything is working fine, except that I can't start the SPICE HTML5 tool for any of the installed machines I have. I've installed the oVirt guest agent on the VM side, websocket-proxy is running and port 6100 is listening on the engine box: # systemctl status ovirt-websocket-proxy ovirt-websocket-proxy.service - oVirt Engine websockets proxy Loaded: loaded (/usr/lib/systemd/system/ovirt-websocket-proxy.service; enabled) Active: active (running) # netstat -atpn | grep 6100 tcp 0 0 0.0.0.0:6100 0.0.0.0:* LISTEN 7227/python Also, I imported the CA cert (https://fqdn/ca.crt) on the browser. However, once I run the SPICE HTML5 client from the userportal, all I get is an empty grey square with the two "Send ctrl+alt+delete" and "Toggle messages output" buttons at the bottom. Nothing in the logs about this issue. I tried to run it both with Chromium and Firefox on a linux box. Is there anything that I am missing? I've run out of ideas... Thanks. Nicolás --------------040801010109090109090703 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: 8bit <html> <head> <meta http-equiv="content-type" content="text/html; charset=utf-8"> </head> <body bgcolor="#FFFFFF" text="#000000"> Hi,<br> <br> I'm using oVirt 3.5.2 on a CentOS box. As far as the engine goes everything is working fine, except that I can't start the SPICE HTML5 tool for any of the installed machines I have.<br> <br> I've installed the oVirt guest agent on the VM side, websocket-proxy is running and port 6100 is listening on the engine box:<br> <blockquote># systemctl status ovirt-websocket-proxy<br> ovirt-websocket-proxy.service - oVirt Engine websockets proxy<br> Loaded: loaded (/usr/lib/systemd/system/ovirt-websocket-proxy.service; enabled)<br> Active: active (running)<br> <br> # netstat -atpn | grep 6100<br> tcp 0 0 0.0.0.0:6100 0.0.0.0:* LISTEN 7227/python<br> </blockquote> Also, I imported the CA cert (<a class="moz-txt-link-freetext" href="https://fqdn/ca.crt">https://fqdn/ca.crt</a>) on the browser. However, once I run the SPICE HTML5 client from the userportal, all I get is an empty grey square with the two "Send ctrl+alt+delete" and "Toggle messages output" buttons at the bottom. Nothing in the logs about this issue. I tried to run it both with Chromium and Firefox on a linux box.<br> <br> Is there anything that I am missing? I've run out of ideas...<br> <br> Thanks.<br> <br> Nicolás<br> <br> <br> </body> </html> --------------040801010109090109090703--

5 7

Re: [ovirt-users] Comma Seperated Value doesn't accept by custom properties
by Punit Dambiwal 11 Jun '15

11 Jun '15

Hi Dan, Seems the problem is here :- ----------------------------- Thread-779::INFO::2015-06-09 09:04:05,204::hooks::100::root::(_runHooksDir) Thread-779::DEBUG::2015-06-09 09:04:05,205::utils::739::root::(execCmd) /usr/libexec/vdsm/hooks/before_vm_start/50_noipspoof (cwd None) Thread-779::DEBUG::2015-06-09 09:04:05,301::utils::759::root::(execCmd) FAILED: <err> = 'Traceback (most recent call last):\n File "/usr/libexec/vdsm/hooks/before_vm_start/50_noipspoof", line 85, in <module>\n main()\n File "/usr/libexec/vdsm/hooks/before_vm_start/50_noipspoof", line 52, in main\n interface, = domxml.getElementsByTagName(\'interface\')\nValueError: too many values to unpack\n'; <rc> = 1 Thread-779::INFO::2015-06-09 09:04:05,301::hooks::100::root::(_runHooksDir) Traceback (most recent call last): File "/usr/libexec/vdsm/hooks/before_vm_start/50_noipspoof", line 85, in <module> main() File "/usr/libexec/vdsm/hooks/before_vm_start/50_noipspoof", line 52, in main interface, = domxml.getElementsByTagName('interface') ValueError: too many values to unpack Thread-779::DEBUG::2015-06-09 09:04:05,301::vm::2294::vm.Vm::(_startUnderlyingVm) vmId=`600f6fa9-0c08-42ec-bbbd-939a07beb61c`::_ongoingCreations released Thread-779::ERROR::2015-06-09 09:04:05,302::vm::2331::vm.Vm::(_startUnderlyingVm) vmId=`600f6fa9-0c08-42ec-bbbd-939a07beb61c`::The vm start process failed Traceback (most recent call last): File "/usr/share/vdsm/virt/vm.py", line 2271, in _startUnderlyingVm self._run() File "/usr/share/vdsm/virt/vm.py", line 3299, in _run domxml = hooks.before_vm_start(self._buildCmdLine(), self.conf) File "/usr/share/vdsm/hooks.py", line 142, in before_vm_start return _runHooksDir(domxml, 'before_vm_start', vmconf=vmconf) File "/usr/share/vdsm/hooks.py", line 110, in _runHooksDir raise HookError() HookError Thread-779::DEBUG::2015-06-09 09:04:05,303::vm::2786::vm.Vm::(setDownStatus) vmId=`600f6fa9-0c08-42ec-bbbd-939a07beb61c`::Changed state to Down: VM terminated with error (code=1) --------------------- On Tue, Jun 9, 2015 at 9:13 AM, Punit Dambiwal <hypunit(a)gmail.com> wrote: > Hi Dan, > > Please find the Vdsm logs here :- > > 1. With 2 NIC (VM failed to bootup) :- http://paste.ubuntu.com/11660142/ > 2. Removed the secondary NIC and run the VM again....VM can bootup :- > http://paste.ubuntu.com/11660197/ > > Thanks, > Punit > > > > > On Mon, Jun 8, 2015 at 8:35 PM, Dan Kenigsberg <danken(a)redhat.com> wrote: > >> 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 VM....VM 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. >> > >

2 2

[Centos7x64] [Ovirt 3.5.2 hosted engine] hypervisor hang when rebooted
by wodel youchi 10 Jun '15

10 Jun '15

Hi, Centos7x64, Ovirt 3.5.2 hosted engine : all updated. Two hypervisors HP DL380p I have a strange behaviour on my hypervisors, whenever I reboot one of them it hangs. It hangs in this line : hpwdt unexpected close not stopping watchdog watchdog multiplexing stopped on the ILO4 GUI I have this error An Unrecoverable System Error (NMI) has occurred (System error code 0x0000002B, 0x00000000) Thanks.

1 1

ovirt webadmin errors
by jazzman＠go2.pl 10 Jun '15

10 Jun '15

--==o2.pl-WebMail-33769c4e.b80adab.aa4c2== Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hi=20guys,=C2=A0 I=20need=20to=20build=20a=20ovirt=20based=C2=A0environment=20using=20coup= le=20old=20servers=20-=20for=20now=20only=20for=20testing.=C2=A0 For=20controler=20I=20choose=20machine=20with=203GB=20of=20ram=20and=20In= tel=20Xeon=202.8=20Ghz.=C2=A0 I=20know=20this=20is=C2=A0below=20requirements=20but=20in=20this=C2=A0env= ironment=20I=20have=20smal=20amount=20of=20physical=20servers=20eg: 1x=20controller=C2=A0 2x=20hypervisors=C2=A0 2x=20glusters After=20instaling,=20everything=20looks=20okay=C2=A0until=20the=20first=20= logon=20to=20webadmin.=C2=A0 When=20I=20try=20to=20define=20first=20virtual=20datacenter=20webui=20wor= ks=20realy=C2=A0slow.=C2=A0It=20is=20not=20possible=20to=20switch=20beetw= en=20any=20tabs.=20At=20the=20end=C2=A0I=20received=20a=20503=20error.=C2= =A0 I=20thought=20that=20was=20a=20my=20browser=20issue.=C2=A0I=20check=20thi= s=20using=20Ubuntu=20+=20Chromium=20+=20Firefox=20from=20repo,=20also=20I= =20try=20a=20older=20version=20of=20Firefox.=C2=A0 Windows=207=20+=20Firefox=20-=20=C2=A0was=20this=20same=20problems.=C2=A0= Does=20anybody=20know=20how=20to=20resolve=20the=20problem=20?=C2=A0 Thanks=C2=A0 Greg=20K=C2=A0 --==o2.pl-WebMail-33769c4e.b80adab.aa4c2== Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Hi=20guys,=C2=A0<br=20/>I=20need=20to=20build=20a=20ovirt=20based=C2=A0en= vironment=20using=20couple=20old=20servers=20-=20for=20now=20only=20for=20= testing.=C2=A0<br=20/>For=20controler=20I=20choose=20machine=20with=203GB= =20of=20ram=20and=20Intel=20Xeon=202.8=20Ghz.=C2=A0<br=20/>I=20know=20thi= s=20is=C2=A0below=20requirements=20but=20in=20this=C2=A0environment=20I=20= have=20smal=20amount=20of=20physical=20servers=20eg:<br=20/>1x=20controll= er=C2=A0<br=20/>2x=20hypervisors=C2=A0<br=20/>2x=20glusters<br=20/><br=20= />After=20instaling,=20everything=20looks=20okay=C2=A0until=20the=20first= =20logon=20to=20webadmin.=C2=A0<br=20/>When=20I=20try=20to=20define=20fir= st=20virtual=20datacenter=20webui=20works=20realy=C2=A0slow.=C2=A0It=20is= =20not=20possible=20to=20switch=20beetwen=20any=20tabs.=20At=20the=20end=C2= =A0I=20received=20a=20503=20error.=C2=A0<br=20/>I=20thought=20that=20was=20= a=20my=20browser=20issue.=C2=A0I=20check=20this=20using=20Ubuntu=20+=20Ch= romium=20+=20Firefox=20from=20repo,=20also=20I=20try=20a=20older=20versio= n=20of=20Firefox.=C2=A0<br=20/>Windows=207=20+=20Firefox=20-=20=C2=A0was=20= this=20same=20problems.=C2=A0<br=20/><br=20/>Does=20anybody=20know=20how=20= to=20resolve=20the=20problem=20?=C2=A0<br=20/><br=20/>Thanks=C2=A0<br=20/= >Greg=20K=C2=A0<br=20/><br=20/> --==o2.pl-WebMail-33769c4e.b80adab.aa4c2==--

3 3

Questions about Spice Proxy
by Kevin COUSIN 08 Jun '15

08 Jun '15

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.

2 1

Comma Seperated Value doesn't accept by custom properties
by Punit Dambiwal 08 Jun '15

08 Jun '15

Hi, I have installed noipspoof VDSM hooks...in the vdsm hooks it specify that you can use multiple ip address by comma separate list....but it's not working... single ip can work without any issue...but can not add multiple ip address in this filed... [image: Inline image 1] Thanks, Punit

3 6

Move VirtIO disk to External LUN disk
by Juan Carlos YJ. Lin 08 Jun '15

08 Jun '15

--=_29ee8d9f-0144-4834-b7ed-9ac528cd762c Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit I have performance issue with the VirtIO disks and like to move it to External LUN on the ISCI storage to use the ISCSI pathtrought How I can do that? Juan Carlos Lin Unisoft S.A. +595-993-288330 --------------------------------------------------- "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." --=_29ee8d9f-0144-4834-b7ed-9ac528cd762c Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: 7bit <html><head><style type='text/css'>p { margin: 0; }</style></head><body><div style='font-family: Arial; font-size: 10pt; color: #000000'><span>I have performance issue with the VirtIO disks and like to move it to External LUN on the ISCI storage to use the ISCSI pathtrought<br>How I can do that?<br><br><span name="x"></span>Juan Carlos Lin<br>Unisoft S.A.<br>+595-993-288330<span name="x"></span><br></span><br></div> <br> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> <HTML lang="es"> <HEAD> <TITLE>System-wide Disclaimer</TITLE> </HEAD> <BODY>---------------------------------------------------<br>"Antes de imprimir, recuérdese de su compromiso con el Medio Ambiente"<br>"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." </BODY> </HTML><br> </body></html> --=_29ee8d9f-0144-4834-b7ed-9ac528cd762c--

2 1

Katello integration
by Nathanaël Blanchet 08 Jun '15

08 Jun '15

Hello i read your wiki page about katello but i can't see thé projection as a target on the Google sheet https://docs.google.com/spreadsheets/d/1vUwi0y54SV7nYZC1DXo_hLPyG7hvtWDHfa6… Is this always targeted tout 3.6? Screenshot tell me that web is already ready.

3 2

Re: [ovirt-users] HA storage based on two nodes with one point of failure
by Юрий Полторацкий 08 Jun '15

08 Jun '15

This is a multi-part message in MIME format. --------------070106010204050704030701 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit 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/Admini…> 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. 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 and the brick BRICK1 will not be able for writing. But > on HOST2 there is no problem with server quorum (HOST2 + HOST3 > 51%) > and that's why BRICK2 still accessible for writing. With client's > quorum there is no problem also - one brick is alive, so client can > write on it. > > I have made a lab using KVM on my desktop and it seems to be worked > well and as expected. > > The main question is: > Can I use such a storage for production? > > Thanks. > --------------070106010204050704030701 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: 8bit <html> <head> <meta content="text/html; charset=utf-8" http-equiv="Content-Type"> </head> <body text="#000000" bgcolor="#FFFFFF"> Hi,<br> <br> I have made a lab with a config listed below and have got unexpected result. Someone, tell me, please, where did I go wrong?<br> <br> 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).<br> <br> I want the storage to be HA. I have read <a href="https://access.redhat.com/documentation/en-US/Red_Hat_Storage/3/html/Admini…">here</a> next:<br> <tt>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. </tt><br> <br> So, I have added my "Engine" (not self-hosted) as a dummy node without a brick and have configured quorum as listed below:<br> <tt>cluster.quorum-type: fixed</tt><tt><br> </tt><tt>cluster.quorum-count: 1</tt><tt><br> </tt><tt>cluster.server-quorum-type: server</tt><tt><br> </tt><tt>cluster.server-quorum-ratio: 51%</tt><br> <br> <br> 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.<br> <br> Gluster's log from node6:<br> <tt>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.</tt><tt><br> </tt><tt>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.</tt><br> <tt><br> <br> </tt><tt>gluster> volume heal vol3 info </tt><tt><br> </tt><tt>Brick node5.virt.local:/storage/brick12/</tt><tt><br> </tt><tt>/5d0bb2f3-f903-4349-b6a5-25b549affe5f/dom_md/ids - Is in split-brain</tt><tt><br> </tt><tt><br> </tt><tt>Number of entries: 1</tt><tt><br> </tt><tt><br> </tt><tt>Brick node6.virt.local:/storage/brick13/</tt><tt><br> </tt><tt>/5d0bb2f3-f903-4349-b6a5-25b549affe5f/dom_md/ids - Is in split-brain</tt><tt><br> </tt><tt><br> </tt><tt>Number of entries: 1</tt><br> <br> <br> <tt>gluster> volume info vol3</tt><tt><br> </tt><tt> </tt><tt><br> </tt><tt>Volume Name: vol3</tt><tt><br> </tt><tt>Type: Replicate</tt><tt><br> </tt><tt>Volume ID: 69ba8c68-6593-41ca-b1d9-40b3be50ac80</tt><tt><br> </tt><tt>Status: Started</tt><tt><br> </tt><tt>Number of Bricks: 1 x 2 = 2</tt><tt><br> </tt><tt>Transport-type: tcp</tt><tt><br> </tt><tt>Bricks:</tt><tt><br> </tt><tt>Brick1: node5.virt.local:/storage/brick12</tt><tt><br> </tt><tt>Brick2: node6.virt.local:/storage/brick13</tt><tt><br> </tt><tt>Options Reconfigured:</tt><tt><br> </tt><tt>storage.owner-gid: 36</tt><tt><br> </tt><tt>storage.owner-uid: 36</tt><tt><br> </tt><tt>cluster.server-quorum-type: server</tt><tt><br> </tt><tt>cluster.quorum-type: fixed</tt><tt><br> </tt><tt>network.remote-dio: enable</tt><tt><br> </tt><tt>cluster.eager-lock: enable</tt><tt><br> </tt><tt>performance.stat-prefetch: off</tt><tt><br> </tt><tt>performance.io-cache: off</tt><tt><br> </tt><tt>performance.read-ahead: off</tt><tt><br> </tt><tt>performance.quick-read: off</tt><tt><br> </tt><tt>auth.allow: *</tt><tt><br> </tt><tt>user.cifs: disable</tt><tt><br> </tt><tt>nfs.disable: on</tt><tt><br> </tt><tt>performance.readdir-ahead: on</tt><tt><br> </tt><tt>cluster.quorum-count: 1</tt><tt><br> </tt><tt>cluster.server-quorum-ratio: 51%</tt><br> <br> <br> <br> <div class="moz-cite-prefix">06.06.2015 12:09, Юрий Полторацкий пишет:<br> </div> <blockquote cite="mid:CANgBB_sWBZwDh3yaAJV=ETLqrJyYxT9_EfRjnjMHF-1NVbevqw@mail.gmail.com" type="cite"> <div dir="ltr"> <div> <div> <div> <div> <div> <div> <div> <div>Hi,<br> <br> </div> 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.<br> <br> </div> 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:<br> </div> <br> cluster.quorum-type: fixed<br> cluster.quorum-count: 1<br> cluster.server-quorum-type: server<br> cluster.server-quorum-ratio: 51%<br> <br> </div> 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. <br> <br> Say, HOST1 with a brick BRICK1, HOST2 with a brick BRICK2, and HOST3 without a brick.<br> <br> Once HOST1 lose a network connection, than on this node server quorum will not meet and the brick BRICK1 will not be able for writing. But on HOST2 there is no problem with server quorum (HOST2 + HOST3 > 51%) and that's why BRICK2 still accessible for writing. With client's quorum there is no problem also - one brick is alive, so client can write on it.<br> <br> </div> I have made a lab using KVM on my desktop and it seems to be worked well and as expected.<br> <br> </div> The main question is:<br> </div> Can I use such a storage for production?<br> <br> </div> Thanks. <br> <div> <div> <div> <div> <div><br> </div> </div> </div> </div> </div> </div> </blockquote> <br> </body> </html> --------------070106010204050704030701--

2 2

Why not bond0
by 肖力 07 Jun '15

07 Jun '15

------=_Part_150959_749523399.1432432244076 Content-Type: text/plain; charset=GBK Content-Transfer-Encoding: base64 SGkgbmljIGJvbmQgd2h5IG5vdCBjaG9pY2UgYm9uZDAgPwoK ------=_Part_150959_749523399.1432432244076 Content-Type: text/html; charset=GBK Content-Transfer-Encoding: base64 PGRpdiBzdHlsZT0ibGluZS1oZWlnaHQ6MS43O2NvbG9yOiMwMDAwMDA7Zm9udC1zaXplOjE0cHg7 Zm9udC1mYW1pbHk6QXJpYWwiPjxkaXY+SGkgbmljIGJvbmQgd2h5IG5vdCBjaG9pY2UgYm9uZDAg Pzxicj48YnI+PC9kaXY+PC9kaXY+PGJyPjxicj48c3BhbiB0aXRsZT0ibmV0ZWFzZWZvb3RlciI+ PHNwYW4gaWQ9Im5ldGVhc2VfbWFpbF9mb290ZXIiPjwvc3Bhbj48L3NwYW4+ ------=_Part_150959_749523399.1432432244076--

4 6