<br></div><blockquote type=3D"cite"><div><br><blockquote type=3D"cite">Thi= s is where I=B4m at today:<br></blockquote><blockquote type=3D"cite"><br></=

</blockquote><blockquote type=3D"cite">ovirt-iso-uploader-3.1.0-0.git1841d= 9.fc17.noarch<br></blockquote><blockquote type=3D"cite">ovirt-engine-setup-= 3.1.0-1.fc17.noarch<br></blockquote><blockquote type=3D"cite">vdsm-cli-4.10= .0-5.fc17.noarch<br></blockquote><blockquote type=3D"cite">vdsm-4.10.0-5.fc= 17.x86_64<br></blockquote><blockquote type=3D"cite">vdsm-python-4.10.0-5.fc= 17.x86_64<br></blockquote><blockquote type=3D"cite">vdsm-xmlrpc-4.10.0-5.fc= 17.noarch<br></blockquote><blockquote type=3D"cite">vdsm-bootstrap-4.10.0-5= .fc17.noarch<br></blockquote><blockquote type=3D"cite"><br></blockquote><bl= ockquote type=3D"cite"><br></blockquote><blockquote type=3D"cite">Best Rega= rds<br></blockquote><blockquote type=3D"cite">-----------------------------= --------------------------------------------------<br></blockquote><blockqu= ote type=3D"cite">Karli Sj=F6berg<br></blockquote><blockquote type=3D"cite"= Swedish University of Agricultural Sciences<br></blockquote><blockquote ty=

</blockquote><blockquote type=3D"cite">___________________________________= ____________<br></blockquote><blockquote type=3D"cite">Users mailing list<b= r></blockquote><blockquote type=3D"cite"><a href=3D"mailto:Users@ovirt.org"= Users@ovirt.org</a><br></blockquote><blockquote type=3D"cite"><a href=3D"h= ttp://lists.ovirt.org/mailman/listinfo/users">http://lists.ovirt.org/mailma= n/listinfo/users</a><br></blockquote><blockquote type=3D"cite"><br></blockq= uote><br><br></div></blockquote></div><br><div> <span class=3D"Apple-style-span" style=3D"border-collapse: separate; color:= rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: no= rmal; font-weight: normal; letter-spacing: normal; line-height: normal; orp= hans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; = white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizonta= l-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorati= ons-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-wi=

--_000_CAA8F9CFBF7E4B03BEF0852CA7283F02sluse_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable 28 jul 2012 kl. 14.11 skrev Moti Asayag: On 07/26/2012 02:53 PM, Karli Sj=F6berg wrote: Hi, In my DC, I have three hosts added: hostA hostB hostC I want a way to force only to use hostA as a proxy for power commands. The algorithm of selection a host to act as a proxy for PM commands is quite naive: any host from the system with status UP. You can see how it is being selected in FencingExecutor.FindVdsToFence() from ovirt-engine/backend/manager/modules/bll/src/main/java/org/ovirt/engine/cor= e/bll/FencingExecutor.java There is no other algorithm for the selection at the moment. How would you handle a case in which hostA isn't responsive ? Wouldn't you prefer trying to perform the fencing using other available host ? Let me explain a little to make you better understand my reasoning behind t= his configuration. We work with segmented, separated networks. One network for public access, = one for storage traffic, one for management and so on. That means that if t= he nodes themselves have to do their own power-management, the nodes would = require three interfaces each, and the metal we are using for hosts just do= n=B4t have that. But if we can use the engine to do that, the hosts would o= nly require two interfaces, which most 1U servers are equipped with as stan= dard (plus one iLO/IPMI/whatev), so we can use them as hosts without issue.= Then the backend has one extra interface that it can use to communicate ov= er the power management network to the respective service processor with. Is there a "better" way to achieve what we are aiming for? Ideally, I would= like to set up the two NICs in a bond and create VLAN-interfaces on top of= that bond. That way, I can have as many virtual interfaces as I want witho= ut having more than two physical NICs, but I haven=B4t been able to find a = good HOWTO explaining the process. /Karli This is where I=B4m at today: ovirt-image-uploader-3.1.0-0.git9c42c8.fc17.noarch ovirt-engine-config-3.1.0-1.fc17.noarch ovirt-engine-userportal-3.1.0-1.fc17.noarch ovirt-log-collector-3.1.0-0.git10d719.fc17.noarch ovirt-engine-sdk-3.1.0.4-1.fc17.noarch ovirt-engine-restapi-3.1.0-1.fc17.noarch ovirt-engine-backend-3.1.0-1.fc17.noarch ovirt-engine-3.1.0-1.fc17.noarch ovirt-engine-webadmin-portal-3.1.0-1.fc17.noarch ovirt-engine-notification-service-3.1.0-1.fc17.noarch ovirt-engine-dbscripts-3.1.0-1.fc17.noarch ovirt-engine-genericapi-3.1.0-1.fc17.noarch ovirt-engine-tools-common-3.1.0-1.fc17.noarch ovirt-engine-cli-3.1.0.6-1.fc17.noarch ovirt-iso-uploader-3.1.0-0.git1841d9.fc17.noarch ovirt-engine-setup-3.1.0-1.fc17.noarch vdsm-cli-4.10.0-5.fc17.noarch vdsm-4.10.0-5.fc17.x86_64 vdsm-python-4.10.0-5.fc17.x86_64 vdsm-xmlrpc-4.10.0-5.fc17.noarch vdsm-bootstrap-4.10.0-5.fc17.noarch Best Regards ---------------------------------------------------------------------------= ---- Karli Sj=F6berg Swedish University of Agricultural Sciences Box 7079 (Visiting Address Kron=E5sv=E4gen 8) S-750 07 Uppsala, Sweden Phone: +46-(0)18-67 15 66 karli.sjoberg@slu.se<mailto:karli.sjoberg@slu.se> <mailto:karli.sjoberg@adm= .slu.se> _______________________________________________ Users mailing list Users@ovirt.org<mailto:Users@ovirt.org> http://lists.ovirt.org/mailman/listinfo/users Med V=E4nliga H=E4lsningar ---------------------------------------------------------------------------= ---- Karli Sj=F6berg Swedish University of Agricultural Sciences Box 7079 (Visiting Address Kron=E5sv=E4gen 8) S-750 07 Uppsala, Sweden Phone: +46-(0)18-67 15 66 karli.sjoberg@slu.se<mailto:karli.sjoberg@adm.slu.se> --_000_CAA8F9CFBF7E4B03BEF0852CA7283F02sluse_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable <html><head></head><body style=3D"word-wrap: break-word; -webkit-nbsp-mode:= space; -webkit-line-break: after-white-space; "><br><div><div>28 jul 2012 = kl. 14.11 skrev Moti Asayag:</div><br class=3D"Apple-interchange-newline"><= blockquote type=3D"cite"><div>On 07/26/2012 02:53 PM, Karli Sj=F6berg wrote= :<br><blockquote type=3D"cite">Hi,<br></blockquote><blockquote type=3D"cite= "><br></blockquote><blockquote type=3D"cite">In my DC, I have three hosts a= dded:<br></blockquote><blockquote type=3D"cite"><br></blockquote><blockquot= e type=3D"cite">hostA<br></blockquote><blockquote type=3D"cite">hostB<br></= blockquote><blockquote type=3D"cite">hostC<br></blockquote><blockquote type= =3D"cite"><br></blockquote><blockquote type=3D"cite">I want a way to force = only to use hostA as a proxy for power commands.<br></blockquote><br>The al= gorithm of selection a host to act as a proxy for PM commands is<br>quite n= aive: any host from the system with status UP.<br><br>You can see how it is= being selected in FencingExecutor.FindVdsToFence()<br>from<br>ovirt-engine= /backend/manager/modules/bll/src/main/java/org/ovirt/engine/core/bll/Fencin= gExecutor.java<br><br>There is no other algorithm for the selection at the = moment.<br><br>How would you handle a case in which hostA isn't responsive = ? Wouldn't<br>you prefer trying to perform the fencing using other availabl= e host ?<br></div></blockquote><div><br></div><div><br></div><div>Let me ex= plain a little to make you better understand my reasoning behind this confi= guration.</div><div><br></div><div>We work with segmented, separated networ= ks. One network for public access, one for storage traffic, one for managem= ent and so on. That means that if the nodes themselves have to do their own= power-management, the nodes would require three interfaces each, and the m= etal we are using for hosts just don=B4t have that. But if we can use the e= ngine to do that, the hosts would only require two interfaces, which most 1= U servers are equipped with as standard (plus one iLO/IPMI/whatev), so we c= an use them as hosts without issue. Then the backend has one extra interfac= e that it can use to communicate over the power management network to the r= espective service processor with.</div><div><br></div><div>Is there a "bett= er" way to achieve what we are aiming for? Ideally, I would like to set up = the two NICs in a bond and create VLAN-interfaces on top of that bond. That= way, I can have as many virtual interfaces as I want without having more t= han two physical NICs, but I haven=B4t been able to find a good HOWTO expla= ining the process.</div><div><br></div><div>/Karli</div><div><br></div><div= blockquote><blockquote type=3D"cite">ovirt-image-uploader-3.1.0-0.git9c42c8= .fc17.noarch<br></blockquote><blockquote type=3D"cite">ovirt-engine-config-= 3.1.0-1.fc17.noarch<br></blockquote><blockquote type=3D"cite">ovirt-engine-= userportal-3.1.0-1.fc17.noarch<br></blockquote><blockquote type=3D"cite">ov= irt-log-collector-3.1.0-0.git10d719.fc17.noarch<br></blockquote><blockquote= type=3D"cite">ovirt-engine-sdk-3.1.0.4-1.fc17.noarch<br></blockquote><bloc= kquote type=3D"cite">ovirt-engine-restapi-3.1.0-1.fc17.noarch<br></blockquo= te><blockquote type=3D"cite">ovirt-engine-backend-3.1.0-1.fc17.noarch<br></= blockquote><blockquote type=3D"cite">ovirt-engine-3.1.0-1.fc17.noarch<br></= blockquote><blockquote type=3D"cite">ovirt-engine-webadmin-portal-3.1.0-1.f= c17.noarch<br></blockquote><blockquote type=3D"cite">ovirt-engine-notificat= ion-service-3.1.0-1.fc17.noarch<br></blockquote><blockquote type=3D"cite">o= virt-engine-dbscripts-3.1.0-1.fc17.noarch<br></blockquote><blockquote type= =3D"cite">ovirt-engine-genericapi-3.1.0-1.fc17.noarch<br></blockquote><bloc= kquote type=3D"cite">ovirt-engine-tools-common-3.1.0-1.fc17.noarch<br></blo= ckquote><blockquote type=3D"cite">ovirt-engine-cli-3.1.0.6-1.fc17.noarch<br= pe=3D"cite">Box 7079 (Visiting Address Kron=E5sv=E4gen 8)<br></blockquote><= blockquote type=3D"cite">S-750 07 Uppsala, Sweden<br></blockquote><blockquo= te type=3D"cite">Phone:  +46-(0)18-67 15 66<br></blockquote><blockquot= e type=3D"cite"><a href=3D"mailto:karli.sjoberg@slu.se">karli.sjoberg@slu.s= e</a> <<a href=3D"mailto:karli.sjoberg@adm.slu.se">mailto:karli.sjoberg@= adm.slu.se</a>><br></blockquote><blockquote type=3D"cite"><br></blockquo= te><blockquote type=3D"cite"><br></blockquote><blockquote type=3D"cite"><br= dth: 0px; font-size: medium; "><div><br class=3D"Apple-interchange-newline"=

<br></div><div>Med V=E4nliga H=E4lsningar<br>-----------------------------= --------------------------------------------------<br>Karli Sj=F6berg<br>Sw= edish University of Agricultural Sciences<br>Box 7079 (Visiting Address Kro= n=E5sv=E4gen 8)<br>S-750 07 Uppsala, Sweden<br>Phone:  +46-(0)18-67 15= 66</div><div><a href=3D"mailto:karli.sjoberg@adm.slu.se">karli.sjoberg@slu= .se</a></div></span> </div> <br></body></html>=

--_000_CAA8F9CFBF7E4B03BEF0852CA7283F02sluse_--

On 07/26/2012 02:53 PM, Karli Sj=F6berg wrote:<br></blockquote></blockquot= e><blockquote type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"c= ite">Hi,<br></blockquote></blockquote></blockquote><blockquote type=3D"cite= "><blockquote type=3D"cite"><blockquote type=3D"cite"><br></blockquote></bl= ockquote></blockquote><blockquote type=3D"cite"><blockquote type=3D"cite"><=

<blockquote type=3D"cite"><blockquote type=3D"cite">hostB<br></blockquote>= </blockquote></blockquote><blockquote type=3D"cite"><blockquote type=3D"cit= e"><blockquote type=3D"cite">hostC<br></blockquote></blockquote></blockquot= e><blockquote type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"c= ite"><br></blockquote></blockquote></blockquote><blockquote type=3D"cite"><=

</blockquote><blockquote type=3D"cite"><blockquote type=3D"cite"><br></blo= ckquote></blockquote><blockquote type=3D"cite"><blockquote type=3D"cite">Th= e algorithm of selection a host to act as a proxy for PM commands is<br></b= lockquote></blockquote><blockquote type=3D"cite"><blockquote type=3D"cite">= quite naive: any host from the system with status UP.<br></blockquote></blo= ckquote><blockquote type=3D"cite"><blockquote type=3D"cite"><br></blockquot= e></blockquote><blockquote type=3D"cite"><blockquote type=3D"cite">You can = see how it is being selected in FencingExecutor.FindVdsToFence()<br></block= quote></blockquote><blockquote type=3D"cite"><blockquote type=3D"cite">from= <br></blockquote></blockquote><blockquote type=3D"cite"><blockquote type=3D= "cite">ovirt-engine/backend/manager/modules/bll/src/main/java/org/ovirt/eng= ine/core/bll/FencingExecutor.java<br></blockquote></blockquote><blockquote = type=3D"cite"><blockquote type=3D"cite"><br></blockquote></blockquote><bloc= kquote type=3D"cite"><blockquote type=3D"cite">There is no other algorithm = for the selection at the moment.<br></blockquote></blockquote><blockquote t= ype=3D"cite"><blockquote type=3D"cite"><br></blockquote></blockquote><block= quote type=3D"cite"><blockquote type=3D"cite">How would you handle a case i= n which hostA isn't responsive ? Wouldn't<br></blockquote></blockquote><blo= ckquote type=3D"cite"><blockquote type=3D"cite">you prefer trying to perfor= m the fencing using other available host ?<br></blockquote></blockquote><bl= ockquote type=3D"cite"><br></blockquote><blockquote type=3D"cite"><br></blo= ckquote><blockquote type=3D"cite">Let me explain a little to make you bette= r understand my reasoning<br></blockquote><blockquote type=3D"cite">behind =

backend has one extra interface that it can use to communicate over the<br= </blockquote><blockquote type=3D"cite">power management network to the res=

the engine as a host as well.<br></div></blockquote></div><div><br></div>E= xactly, I can live with #2, as I have the engine added as hostA in my DC<br= <div> <span class=3D"Apple-style-span" style=3D"border-collapse: separate; color:= rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: no= rmal; font-weight: normal; letter-spacing: normal; line-height: normal; orp= hans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; = white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizonta= l-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorati= ons-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-wi=

--_000_632B7410C4884422B58DA34F9998BFDFsluse_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable 30 jul 2012 kl. 11.01 skrev Itamar Heim: On 07/30/2012 08:56 AM, Karli Sj=F6berg wrote: 28 jul 2012 kl. 14.11 skrev Moti Asayag: On 07/26/2012 02:53 PM, Karli Sj=F6berg wrote: Hi, In my DC, I have three hosts added: hostA hostB hostC I want a way to force only to use hostA as a proxy for power commands. The algorithm of selection a host to act as a proxy for PM commands is quite naive: any host from the system with status UP. You can see how it is being selected in FencingExecutor.FindVdsToFence() from ovirt-engine/backend/manager/modules/bll/src/main/java/org/ovirt/engine/cor= e/bll/FencingExecutor.java There is no other algorithm for the selection at the moment. How would you handle a case in which hostA isn't responsive ? Wouldn't you prefer trying to perform the fencing using other available host ? Let me explain a little to make you better understand my reasoning behind this configuration. We work with segmented, separated networks. One network for public access, one for storage traffic, one for management and so on. That means that if the nodes themselves have to do their own power-management, the nodes would require three interfaces each, and the metal we are using for hosts just don=B4t have that. But if we can use the engine to do that, the hosts would only require two interfaces, which most 1U servers are equipped with as standard (plus one iLO/IPMI/whatev), so we can use them as hosts without issue. Then the backend has one extra interface that it can use to communicate over the power management network to the respective service processor with. Is there a "better" way to achieve what we are aiming for? Ideally, I would like to set up the two NICs in a bond and create VLAN-interfaces on top of that bond. That way, I can have as many virtual interfaces as I want without having more than two physical NICs, but I haven=B4t been able to find a good HOWTO explaining the process. I think there is a difference between: 1. allowing engine to fence 2. allowing to choose fencing host per cluster (or per host) it sounds like you actually want #1, but can live with #2, by installing the engine as a host as well. Exactly, I can live with #2, as I have the engine added as hostA in my DC Med V=E4nliga H=E4lsningar ---------------------------------------------------------------------------= ---- Karli Sj=F6berg Swedish University of Agricultural Sciences Box 7079 (Visiting Address Kron=E5sv=E4gen 8) S-750 07 Uppsala, Sweden Phone: +46-(0)18-67 15 66 karli.sjoberg@slu.se<mailto:karli.sjoberg@adm.slu.se> --_000_632B7410C4884422B58DA34F9998BFDFsluse_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable <html><head></head><body style=3D"word-wrap: break-word; -webkit-nbsp-mode:= space; -webkit-line-break: after-white-space; "><br><div><div>30 jul 2012 = kl. 11.01 skrev Itamar Heim:</div><br class=3D"Apple-interchange-newline"><= blockquote type=3D"cite"><div>On 07/30/2012 08:56 AM, Karli Sj=F6berg wrote= :<br><blockquote type=3D"cite"><br></blockquote><blockquote type=3D"cite">2= 8 jul 2012 kl. 14.11 skrev Moti Asayag:<br></blockquote><blockquote type=3D= "cite"><br></blockquote><blockquote type=3D"cite"><blockquote type=3D"cite"= blockquote type=3D"cite">In my DC, I have three hosts added:<br></blockquot= e></blockquote></blockquote><blockquote type=3D"cite"><blockquote type=3D"c= ite"><blockquote type=3D"cite"><br></blockquote></blockquote></blockquote><= blockquote type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite= ">hostA<br></blockquote></blockquote></blockquote><blockquote type=3D"cite"= blockquote type=3D"cite"><blockquote type=3D"cite">I want a way to force on= ly to use hostA as a proxy for power commands.<br></blockquote></blockquote= this configuration.<br></blockquote><blockquote type=3D"cite"><br></blockqu= ote><blockquote type=3D"cite">We work with segmented, separated networks. O= ne network for public<br></blockquote><blockquote type=3D"cite">access, one= for storage traffic, one for management and so on. That<br></blockquote><b= lockquote type=3D"cite">means that if the nodes themselves have to do their= own<br></blockquote><blockquote type=3D"cite">power-management, the nodes = would require three interfaces each, and the<br></blockquote><blockquote ty= pe=3D"cite">metal we are using for hosts just don=B4t have that. But if we = can use the<br></blockquote><blockquote type=3D"cite">engine to do that, th= e hosts would only require two interfaces, which<br></blockquote><blockquot= e type=3D"cite">most 1U servers are equipped with as standard (plus one<br>= </blockquote><blockquote type=3D"cite">iLO/IPMI/whatev), so we can use them= as hosts without issue. Then the<br></blockquote><blockquote type=3D"cite"= pective service processor with.<br></blockquote><blockquote type=3D"cite"><= br></blockquote><blockquote type=3D"cite">Is there a "better" way to achiev= e what we are aiming for? Ideally, I<br></blockquote><blockquote type=3D"ci= te">would like to set up the two NICs in a bond and create VLAN-interfaces<= br></blockquote><blockquote type=3D"cite">on top of that bond. That way, I = can have as many virtual interfaces as<br></blockquote><blockquote type=3D"= cite">I want without having more than two physical NICs, but I haven=B4t be= en<br></blockquote><blockquote type=3D"cite">able to find a good HOWTO expl= aining the process.<br></blockquote><blockquote type=3D"cite"><br></blockqu= ote><br>I think there is a difference between:<br>1. allowing engine to fen= ce<br>2. allowing to choose fencing host per cluster (or per host)<br><br>i= t sounds like you actually want #1, but can live with #2, by installing <br= dth: 0px; font-size: medium; "><div><br class=3D"Apple-interchange-newline"=

<br></div><div>Med V=E4nliga H=E4lsningar<br>-----------------------------= --------------------------------------------------<br>Karli Sj=F6berg<br>Sw= edish University of Agricultural Sciences<br>Box 7079 (Visiting Address Kro= n=E5sv=E4gen 8)<br>S-750 07 Uppsala, Sweden<br>Phone:  +46-(0)18-67 15= 66</div><div><a href=3D"mailto:karli.sjoberg@adm.slu.se">karli.sjoberg@slu= .se</a></div></span> </div> <br></body></html>=

--_000_632B7410C4884422B58DA34F9998BFDFsluse_--

On 07/30/2012 08:56 AM, Karli Sj=F6berg wrote:<br></blockquote></blockquot= e><blockquote type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"c= ite"><br></blockquote></blockquote></blockquote><blockquote type=3D"cite"><=

</blockquote></blockquote></blockquote></blockquote><blockquote type=3D"ci= te"><blockquote type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D= "cite"><blockquote type=3D"cite">hostC<br></blockquote></blockquote></block= quote></blockquote></blockquote><blockquote type=3D"cite"><blockquote type= =3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite"><blockquote t= ype=3D"cite"><br></blockquote></blockquote></blockquote></blockquote></bloc= kquote><blockquote type=3D"cite"><blockquote type=3D"cite"><blockquote type= =3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite">I want a way = to force only to use hostA as a proxy for power commands.<br></blockquote><= /blockquote></blockquote></blockquote></blockquote><blockquote type=3D"cite= "><blockquote type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"c= ite"><br></blockquote></blockquote></blockquote></blockquote><blockquote ty=

<blockquote type=3D"cite">from<br></blockquote></blockquote></blockquote><= /blockquote><blockquote type=3D"cite"><blockquote type=3D"cite"><blockquote= type=3D"cite"><blockquote type=3D"cite">ovirt-engine/backend/manager/modul= es/bll/src/main/java/org/ovirt/engine/core/bll/FencingExecutor.java<br></bl= ockquote></blockquote></blockquote></blockquote><blockquote type=3D"cite"><=

--_000_B3844C3FAAB14C54AEA5A34ACFE02BDDsluse_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable 30 jul 2012 kl. 12.26 skrev Itamar Heim: On 07/30/2012 12:03 PM, Karli Sj=F6berg wrote: 30 jul 2012 kl. 11.01 skrev Itamar Heim: On 07/30/2012 08:56 AM, Karli Sj=F6berg wrote: 28 jul 2012 kl. 14.11 skrev Moti Asayag: On 07/26/2012 02:53 PM, Karli Sj=F6berg wrote: Hi, In my DC, I have three hosts added: hostA hostB hostC I want a way to force only to use hostA as a proxy for power commands. The algorithm of selection a host to act as a proxy for PM commands is quite naive: any host from the system with status UP. You can see how it is being selected in FencingExecutor.FindVdsToFence() from ovirt-engine/backend/manager/modules/bll/src/main/java/org/ovirt/engine/cor= e/bll/FencingExecutor.java There is no other algorithm for the selection at the moment. How would you handle a case in which hostA isn't responsive ? Wouldn't you prefer trying to perform the fencing using other available host ? Let me explain a little to make you better understand my reasoning behind this configuration. We work with segmented, separated networks. One network for public access, one for storage traffic, one for management and so on. That means that if the nodes themselves have to do their own power-management, the nodes would require three interfaces each, and the metal we are using for hosts just don=B4t have that. But if we can use the engine to do that, the hosts would only require two interfaces, which most 1U servers are equipped with as standard (plus one iLO/IPMI/whatev), so we can use them as hosts without issue. Then the backend has one extra interface that it can use to communicate over the power management network to the respective service processor with. Is there a "better" way to achieve what we are aiming for? Ideally, I would like to set up the two NICs in a bond and create VLAN-interfaces on top of that bond. That way, I can have as many virtual interfaces as I want without having more than two physical NICs, but I haven=B4t been able to find a good HOWTO explaining the process. I think there is a difference between: 1. allowing engine to fence 2. allowing to choose fencing host per cluster (or per host) it sounds like you actually want #1, but can live with #2, by installing the engine as a host as well. Exactly, I can live with #2, as I have the engine added as hostA in my DC well, the question is if choosing another host to use for fencing would/should be limited to hosts from same DC, then engine can only be used to fence one DC. I=B4m quoting you here: "1. power management is DC wide, not cluster." So this wouldn=B4t be any different from it=B4s current state. also, for any host other than engine, question is what to do if it is down... Med V=E4nliga H=E4lsningar ---------------------------------------------------------------------------= ---- Karli Sj=F6berg Swedish University of Agricultural Sciences Box 7079 (Visiting Address Kron=E5sv=E4gen 8) S-750 07 Uppsala, Sweden Phone: +46-(0)18-67 15 66 karli.sjoberg@slu.se<mailto:karli.sjoberg@adm.slu.se> --_000_B3844C3FAAB14C54AEA5A34ACFE02BDDsluse_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable <html><head></head><body style=3D"word-wrap: break-word; -webkit-nbsp-mode:= space; -webkit-line-break: after-white-space; "><br><div><div>30 jul 2012 = kl. 12.26 skrev Itamar Heim:</div><br class=3D"Apple-interchange-newline"><= blockquote type=3D"cite"><div>On 07/30/2012 12:03 PM, Karli Sj=F6berg wrote= :<br><blockquote type=3D"cite"><br></blockquote><blockquote type=3D"cite">3= 0 jul 2012 kl. 11.01 skrev Itamar Heim:<br></blockquote><blockquote type=3D= "cite"><br></blockquote><blockquote type=3D"cite"><blockquote type=3D"cite"= blockquote type=3D"cite"><blockquote type=3D"cite">28 jul 2012 kl. 14.11 sk= rev Moti Asayag:<br></blockquote></blockquote></blockquote><blockquote type= =3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite"><br></blockqu= ote></blockquote></blockquote><blockquote type=3D"cite"><blockquote type=3D= "cite"><blockquote type=3D"cite"><blockquote type=3D"cite">On 07/26/2012 02= :53 PM, Karli Sj=F6berg wrote:<br></blockquote></blockquote></blockquote></= blockquote><blockquote type=3D"cite"><blockquote type=3D"cite"><blockquote = type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite">Hi,<br></= blockquote></blockquote></blockquote></blockquote></blockquote><blockquote = type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite"><blockquo= te type=3D"cite"><blockquote type=3D"cite"><br></blockquote></blockquote></= blockquote></blockquote></blockquote><blockquote type=3D"cite"><blockquote = type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite"><blockquo= te type=3D"cite">In my DC, I have three hosts added:<br></blockquote></bloc= kquote></blockquote></blockquote></blockquote><blockquote type=3D"cite"><bl= ockquote type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite">= <blockquote type=3D"cite"><br></blockquote></blockquote></blockquote></bloc= kquote></blockquote><blockquote type=3D"cite"><blockquote type=3D"cite"><bl= ockquote type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite">= hostA<br></blockquote></blockquote></blockquote></blockquote></blockquote><= blockquote type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite= "><blockquote type=3D"cite"><blockquote type=3D"cite">hostB<br></blockquote= pe=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite"><blockquote= type=3D"cite">The algorithm of selection a host to act as a proxy for PM c= ommands is<br></blockquote></blockquote></blockquote></blockquote><blockquo= te type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite"><block= quote type=3D"cite">quite naive: any host from the system with status UP.<b= r></blockquote></blockquote></blockquote></blockquote><blockquote type=3D"c= ite"><blockquote type=3D"cite"><blockquote type=3D"cite"><blockquote type= =3D"cite"><br></blockquote></blockquote></blockquote></blockquote><blockquo= te type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite"><block= quote type=3D"cite">You can see how it is being selected in FencingExecutor= .FindVdsToFence()<br></blockquote></blockquote></blockquote></blockquote><b= lockquote type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite"= blockquote type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite= "><br></blockquote></blockquote></blockquote></blockquote><blockquote type= =3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite"><blockquote t= ype=3D"cite">There is no other algorithm for the selection at the moment.<b= r></blockquote></blockquote></blockquote></blockquote><blockquote type=3D"c= ite"><blockquote type=3D"cite"><blockquote type=3D"cite"><blockquote type= =3D"cite"><br></blockquote></blockquote></blockquote></blockquote><blockquo= te type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite"><block= quote type=3D"cite">How would you handle a case in which hostA isn't respon= sive ? Wouldn't<br></blockquote></blockquote></blockquote></blockquote><blo= ckquote type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite"><= blockquote type=3D"cite">you prefer trying to perform the fencing using oth= er available host ?<br></blockquote></blockquote></blockquote></blockquote>= <blockquote type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cit= e"><br></blockquote></blockquote></blockquote><blockquote type=3D"cite"><bl= ockquote type=3D"cite"><blockquote type=3D"cite"><br></blockquote></blockqu= ote></blockquote><blockquote type=3D"cite"><blockquote type=3D"cite"><block= quote type=3D"cite">Let me explain a little to make you better understand m= y reasoning<br></blockquote></blockquote></blockquote><blockquote type=3D"c= ite"><blockquote type=3D"cite"><blockquote type=3D"cite">behind this config= uration.<br></blockquote></blockquote></blockquote><blockquote type=3D"cite= "><blockquote type=3D"cite"><blockquote type=3D"cite"><br></blockquote></bl= ockquote></blockquote><blockquote type=3D"cite"><blockquote type=3D"cite"><= blockquote type=3D"cite">We work with segmented, separated networks. One ne= twork for public<br></blockquote></blockquote></blockquote><blockquote type= =3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite">access, one f= or storage traffic, one for management and so on. That<br></blockquote></bl= ockquote></blockquote><blockquote type=3D"cite"><blockquote type=3D"cite"><= blockquote type=3D"cite">means that if the nodes themselves have to do thei= r own<br></blockquote></blockquote></blockquote><blockquote type=3D"cite"><= blockquote type=3D"cite"><blockquote type=3D"cite">power-management, the no= des would require three interfaces each, and the<br></blockquote></blockquo= te></blockquote><blockquote type=3D"cite"><blockquote type=3D"cite"><blockq= uote type=3D"cite">metal we are using for hosts just don=B4t have that. But= if we can use the<br></blockquote></blockquote></blockquote><blockquote ty= pe=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite">engine to d= o that, the hosts would only require two interfaces, which<br></blockquote>= </blockquote></blockquote><blockquote type=3D"cite"><blockquote type=3D"cit= e"><blockquote type=3D"cite">most 1U servers are equipped with as standard = (plus one<br></blockquote></blockquote></blockquote><blockquote type=3D"cit= e"><blockquote type=3D"cite"><blockquote type=3D"cite">iLO/IPMI/whatev), so= we can use them as hosts without issue. Then the<br></blockquote></blockqu= ote></blockquote><blockquote type=3D"cite"><blockquote type=3D"cite"><block= quote type=3D"cite">backend has one extra interface that it can use to comm= unicate over the<br></blockquote></blockquote></blockquote><blockquote type= =3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite">power managem= ent network to the respective service processor with.<br></blockquote></blo= ckquote></blockquote><blockquote type=3D"cite"><blockquote type=3D"cite"><b= lockquote type=3D"cite"><br></blockquote></blockquote></blockquote><blockqu= ote type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite">Is th= ere a "better" way to achieve what we are aiming for? Ideally, I<br></block= quote></blockquote></blockquote><blockquote type=3D"cite"><blockquote type= =3D"cite"><blockquote type=3D"cite">would like to set up the two NICs in a = bond and create VLAN-interfaces<br></blockquote></blockquote></blockquote><= blockquote type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite= ">on top of that bond. That way, I can have as many virtual interfaces as<b= r></blockquote></blockquote></blockquote><blockquote type=3D"cite"><blockqu= ote type=3D"cite"><blockquote type=3D"cite">I want without having more than= two physical NICs, but I haven=B4t been<br></blockquote></blockquote></blo= ckquote><blockquote type=3D"cite"><blockquote type=3D"cite"><blockquote typ= e=3D"cite">able to find a good HOWTO explaining the process.<br></blockquot= e></blockquote></blockquote><blockquote type=3D"cite"><blockquote type=3D"c= ite"><blockquote type=3D"cite"><br></blockquote></blockquote></blockquote><= blockquote type=3D"cite"><blockquote type=3D"cite"><br></blockquote></block= quote><blockquote type=3D"cite"><blockquote type=3D"cite">I think there is = a difference between:<br></blockquote></blockquote><blockquote type=3D"cite= "><blockquote type=3D"cite">1. allowing engine to fence<br></blockquote></b= lockquote><blockquote type=3D"cite"><blockquote type=3D"cite">2. allowing t= o choose fencing host per cluster (or per host)<br></blockquote></blockquot= e><blockquote type=3D"cite"><blockquote type=3D"cite"><br></blockquote></bl= ockquote><blockquote type=3D"cite"><blockquote type=3D"cite">it sounds like= you actually want #1, but can live with #2, by installing<br></blockquote>= </blockquote><blockquote type=3D"cite"><blockquote type=3D"cite">the engine= as a host as well.<br></blockquote></blockquote><blockquote type=3D"cite">= <br></blockquote><blockquote type=3D"cite">Exactly, I can live with #2, as = I have the engine added as hostA in my DC<br></blockquote><br>well, the que= stion is if choosing another host to use for fencing <br>would/should be li= mited to hosts from same DC, then engine can only be <br>used to fence one = DC.<br></div></blockquote><div><br></div>I=B4m quoting you here:</div><div>= "1. power management is DC wide, not cluster."</div><div><br></div><div>So = this wouldn=B4t be any different from it=B4s current state.</div><div><br><= /div><div><br><blockquote type=3D"cite"><div>also, for any host other than = engine, question is what to do if it is <br>down...<br></div></blockquote><= /div><br><div> <span class=3D"Apple-style-span" style=3D"border-collapse: separate; color:= rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: no= rmal; font-weight: normal; letter-spacing: normal; line-height: normal; orp= hans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; = white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizonta= l-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorati= ons-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-wi= dth: 0px; font-size: medium; "><div><br class=3D"Apple-interchange-newline"=

<br></div><div>Med V=E4nliga H=E4lsningar<br>-----------------------------= --------------------------------------------------<br>Karli Sj=F6berg<br>Sw= edish University of Agricultural Sciences<br>Box 7079 (Visiting Address Kro= n=E5sv=E4gen 8)<br>S-750 07 Uppsala, Sweden<br>Phone:  +46-(0)18-67 15= 66</div><div><a href=3D"mailto:karli.sjoberg@adm.slu.se">karli.sjoberg@slu= .se</a></div></span> </div> <br></body></html>=

--_000_B3844C3FAAB14C54AEA5A34ACFE02BDDsluse_--

On 07/30/2012 12:03 PM, Karli Sj=F6berg wrote:<br></blockquote></blockquot= e><blockquote type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"c= ite"><br></blockquote></blockquote></blockquote><blockquote type=3D"cite"><=

</blockquote></blockquote></blockquote></blockquote></blockquote></blockqu= ote><blockquote type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D= "cite"><blockquote type=3D"cite"><blockquote type=3D"cite"><blockquote type= =3D"cite"><br></blockquote></blockquote></blockquote></blockquote></blockqu= ote></blockquote><blockquote type=3D"cite"><blockquote type=3D"cite"><block= quote type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite"><bl= ockquote type=3D"cite">The algorithm of selection a host to act as a proxy = for PM commands is<br></blockquote></blockquote></blockquote></blockquote><= /blockquote></blockquote><blockquote type=3D"cite"><blockquote type=3D"cite= "><blockquote type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"c= ite"><blockquote type=3D"cite">quite naive: any host from the system with s= tatus UP.<br></blockquote></blockquote></blockquote></blockquote></blockquo= te></blockquote><blockquote type=3D"cite"><blockquote type=3D"cite"><blockq= uote type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite"><blo= ckquote type=3D"cite"><br></blockquote></blockquote></blockquote></blockquo= te></blockquote></blockquote><blockquote type=3D"cite"><blockquote type=3D"= cite"><blockquote type=3D"cite"><blockquote type=3D"cite"><blockquote type= =3D"cite"><blockquote type=3D"cite">You can see how it is being selected in= <br></blockquote></blockquote></blockquote></blockquote></blockquote></bloc= kquote><blockquote type=3D"cite"><blockquote type=3D"cite"><blockquote type= =3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite"><blockquote t= ype=3D"cite">FencingExecutor.FindVdsToFence()<br></blockquote></blockquote>= </blockquote></blockquote></blockquote></blockquote><blockquote type=3D"cit= e"><blockquote type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"= cite"><blockquote type=3D"cite"><blockquote type=3D"cite">from<br></blockqu= ote></blockquote></blockquote></blockquote></blockquote></blockquote><block= quote type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite"><bl= ockquote type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite">= ovirt-engine/backend/manager/modules/bll/src/main/java/org/ovirt/engine/cor= e/bll/FencingExecutor.java<br></blockquote></blockquote></blockquote></bloc= kquote></blockquote></blockquote><blockquote type=3D"cite"><blockquote type= =3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite"><blockquote t= ype=3D"cite"><blockquote type=3D"cite"><br></blockquote></blockquote></bloc= kquote></blockquote></blockquote></blockquote><blockquote type=3D"cite"><bl= ockquote type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite">= <blockquote type=3D"cite"><blockquote type=3D"cite">There is no other algor= ithm for the selection at the moment.<br></blockquote></blockquote></blockq= uote></blockquote></blockquote></blockquote><blockquote type=3D"cite"><bloc= kquote type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite"><b= lockquote type=3D"cite"><blockquote type=3D"cite"><br></blockquote></blockq= uote></blockquote></blockquote></blockquote></blockquote><blockquote type= =3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite"><blockquote t= ype=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite">How would = you handle a case in which hostA isn't responsive ? Wouldn't<br></blockquot= e></blockquote></blockquote></blockquote></blockquote></blockquote><blockqu= ote type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite"><bloc= kquote type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite">yo= u prefer trying to perform the fencing using other available host ?<br></bl= ockquote></blockquote></blockquote></blockquote></blockquote></blockquote><=

<blockquote type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"ci= te"><blockquote type=3D"cite"><blockquote type=3D"cite">access, one for sto= rage traffic, one for management and so on. That<br></blockquote></blockquo= te></blockquote></blockquote></blockquote><blockquote type=3D"cite"><blockq= uote type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite"><blo= ckquote type=3D"cite">means that if the nodes themselves have to do their o= wn<br></blockquote></blockquote></blockquote></blockquote></blockquote><blo= ckquote type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite"><=

</blockquote><blockquote type=3D"cite"><blockquote type=3D"cite"><blockquo= te type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite"><br></=

<blockquote type=3D"cite">I want without having more than two physical NIC= s, but I haven=B4t been<br></blockquote></blockquote></blockquote></blockqu= ote></blockquote><blockquote type=3D"cite"><blockquote type=3D"cite"><block= quote type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite">abl= e to find a good HOWTO explaining the process.<br></blockquote></blockquote= </blockquote></blockquote></blockquote><blockquote type=3D"cite"><blockquo= te type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite"><block= quote type=3D"cite"><br></blockquote></blockquote></blockquote></blockquote= </blockquote><blockquote type=3D"cite"><blockquote type=3D"cite"><blockquo= te type=3D"cite"><blockquote type=3D"cite"><br></blockquote></blockquote></=

<blockquote type=3D"cite"><blockquote type=3D"cite">I think there is a dif= ference between:<br></blockquote></blockquote></blockquote></blockquote><bl= ockquote type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite">= <blockquote type=3D"cite">1. allowing engine to fence<br></blockquote></blo= ckquote></blockquote></blockquote><blockquote type=3D"cite"><blockquote typ= e=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite">2. allowing = to choose fencing host per cluster (or per host)<br></blockquote></blockquo= te></blockquote></blockquote><blockquote type=3D"cite"><blockquote type=3D"= cite"><blockquote type=3D"cite"><blockquote type=3D"cite"><br></blockquote>= </blockquote></blockquote></blockquote><blockquote type=3D"cite"><blockquot= e type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite">it soun= ds like you actually want #1, but can live with #2, by installing<br></bloc= kquote></blockquote></blockquote></blockquote><blockquote type=3D"cite"><bl= ockquote type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite">=

</div>OK, so you actually want the engine to be special. Well, thats how V= MWare vCenter also manages power control so I like that as well. Of course = it=B4s always better if engine could fence all DC=B4s, instead of just one,= and it would also make it a lot more intuitive to configure, cause you won= =B4t need two hosts before the first could verify the other either.  A= nd if the engine goes down, you would have bigger issues than power control= to worry about;)</div><div><br></div><div><blockquote type=3D"cite"><div><= br><blockquote type=3D"cite"><br></blockquote><blockquote type=3D"cite"><br= </blockquote><blockquote type=3D"cite"><blockquote type=3D"cite">also, for= any host other than engine, question is what to do if it is<br></blockquot= e></blockquote><blockquote type=3D"cite"><blockquote type=3D"cite">down...<= br></blockquote></blockquote><blockquote type=3D"cite"><br></blockquote><bl= ockquote type=3D"cite"><br></blockquote><blockquote type=3D"cite"><br></blo= ckquote><blockquote type=3D"cite">Med V=E4nliga H=E4lsningar<br></blockquot= e><blockquote type=3D"cite">-----------------------------------------------= --------------------------------<br></blockquote><blockquote type=3D"cite">= Karli Sj=F6berg<br></blockquote><blockquote type=3D"cite">Swedish Universit= y of Agricultural Sciences<br></blockquote><blockquote type=3D"cite">Box 70= 79 (Visiting Address Kron=E5sv=E4gen 8)<br></blockquote><blockquote type=3D= "cite">S-750 07 Uppsala, Sweden<br></blockquote><blockquote type=3D"cite">P= hone:  +46-(0)18-67 15 66<br></blockquote><blockquote type=3D"cite"><a=

--_000_A2F257DF259A4657B72BD4FD2F4DBD74sluse_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable 30 jul 2012 kl. 17.18 skrev Itamar Heim: On 07/30/2012 04:25 PM, Karli Sj=F6berg wrote: 30 jul 2012 kl. 12.26 skrev Itamar Heim: On 07/30/2012 12:03 PM, Karli Sj=F6berg wrote: 30 jul 2012 kl. 11.01 skrev Itamar Heim: On 07/30/2012 08:56 AM, Karli Sj=F6berg wrote: 28 jul 2012 kl. 14.11 skrev Moti Asayag: On 07/26/2012 02:53 PM, Karli Sj=F6berg wrote: Hi, In my DC, I have three hosts added: hostA hostB hostC I want a way to force only to use hostA as a proxy for power commands. The algorithm of selection a host to act as a proxy for PM commands is quite naive: any host from the system with status UP. You can see how it is being selected in FencingExecutor.FindVdsToFence() from ovirt-engine/backend/manager/modules/bll/src/main/java/org/ovirt/engine/cor= e/bll/FencingExecutor.java There is no other algorithm for the selection at the moment. How would you handle a case in which hostA isn't responsive ? Wouldn't you prefer trying to perform the fencing using other available host ? Let me explain a little to make you better understand my reasoning behind this configuration. We work with segmented, separated networks. One network for public access, one for storage traffic, one for management and so on. That means that if the nodes themselves have to do their own power-management, the nodes would require three interfaces each, and the metal we are using for hosts just don=B4t have that. But if we can use the engine to do that, the hosts would only require two interfaces, which most 1U servers are equipped with as standard (plus one iLO/IPMI/whatev), so we can use them as hosts without issue. Then the backend has one extra interface that it can use to communicate over the power management network to the respective service processor with. Is there a "better" way to achieve what we are aiming for? Ideally, I would like to set up the two NICs in a bond and create VLAN-interfaces on top of that bond. That way, I can have as many virtual interfaces as I want without having more than two physical NICs, but I haven=B4t been able to find a good HOWTO explaining the process. I think there is a difference between: 1. allowing engine to fence 2. allowing to choose fencing host per cluster (or per host) it sounds like you actually want #1, but can live with #2, by installing the engine as a host as well. Exactly, I can live with #2, as I have the engine added as hostA in my DC well, the question is if choosing another host to use for fencing would/should be limited to hosts from same DC, then engine can only be used to fence one DC. I=B4m quoting you here: "1. power management is DC wide, not cluster." So this wouldn=B4t be any different from it=B4s current state. true, but if you have multiple DCs, engine as a host can be used to fence only one DC. while if engine is 'special', it can be used to fence in all DCs OK, so you actually want the engine to be special. Well, thats how VMWare v= Center also manages power control so I like that as well. Of course it=B4s = always better if engine could fence all DC=B4s, instead of just one, and it= would also make it a lot more intuitive to configure, cause you won=B4t ne= ed two hosts before the first could verify the other either. And if the en= gine goes down, you would have bigger issues than power control to worry ab= out;) also, for any host other than engine, question is what to do if it is down... Med V=E4nliga H=E4lsningar ---------------------------------------------------------------------------= ---- Karli Sj=F6berg Swedish University of Agricultural Sciences Box 7079 (Visiting Address Kron=E5sv=E4gen 8) S-750 07 Uppsala, Sweden Phone: +46-(0)18-67 15 66 karli.sjoberg@slu.se<mailto:karli.sjoberg@slu.se> <mailto:karli.sjoberg@adm= .slu.se> Med V=E4nliga H=E4lsningar ---------------------------------------------------------------------------= ---- Karli Sj=F6berg Swedish University of Agricultural Sciences Box 7079 (Visiting Address Kron=E5sv=E4gen 8) S-750 07 Uppsala, Sweden Phone: +46-(0)18-67 15 66 karli.sjoberg@slu.se<mailto:karli.sjoberg@adm.slu.se> --_000_A2F257DF259A4657B72BD4FD2F4DBD74sluse_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable <html><head></head><body style=3D"word-wrap: break-word; -webkit-nbsp-mode:= space; -webkit-line-break: after-white-space; "><br><div><div>30 jul 2012 = kl. 17.18 skrev Itamar Heim:</div><br class=3D"Apple-interchange-newline"><= blockquote type=3D"cite"><div>On 07/30/2012 04:25 PM, Karli Sj=F6berg wrote= :<br><blockquote type=3D"cite"><br></blockquote><blockquote type=3D"cite">3= 0 jul 2012 kl. 12.26 skrev Itamar Heim:<br></blockquote><blockquote type=3D= "cite"><br></blockquote><blockquote type=3D"cite"><blockquote type=3D"cite"= blockquote type=3D"cite"><blockquote type=3D"cite">30 jul 2012 kl. 11.01 sk= rev Itamar Heim:<br></blockquote></blockquote></blockquote><blockquote type= =3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite"><br></blockqu= ote></blockquote></blockquote><blockquote type=3D"cite"><blockquote type=3D= "cite"><blockquote type=3D"cite"><blockquote type=3D"cite">On 07/30/2012 08= :56 AM, Karli Sj=F6berg wrote:<br></blockquote></blockquote></blockquote></= blockquote><blockquote type=3D"cite"><blockquote type=3D"cite"><blockquote = type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite"><br></blo= ckquote></blockquote></blockquote></blockquote></blockquote><blockquote typ= e=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite"><blockquote = type=3D"cite"><blockquote type=3D"cite">28 jul 2012 kl. 14.11 skrev Moti As= ayag:<br></blockquote></blockquote></blockquote></blockquote></blockquote><= blockquote type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite= "><blockquote type=3D"cite"><blockquote type=3D"cite"><br></blockquote></bl= ockquote></blockquote></blockquote></blockquote><blockquote type=3D"cite"><= blockquote type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite= "><blockquote type=3D"cite"><blockquote type=3D"cite">On 07/26/2012 02:53 P= M, Karli Sj=F6berg wrote:<br></blockquote></blockquote></blockquote></block= quote></blockquote></blockquote><blockquote type=3D"cite"><blockquote type= =3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite"><blockquote t= ype=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite">Hi,<br></b= lockquote></blockquote></blockquote></blockquote></blockquote></blockquote>= </blockquote><blockquote type=3D"cite"><blockquote type=3D"cite"><blockquot= e type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite"><blockq= uote type=3D"cite"><blockquote type=3D"cite"><br></blockquote></blockquote>= </blockquote></blockquote></blockquote></blockquote></blockquote><blockquot= e type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite"><blockq= uote type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite"><blo= ckquote type=3D"cite">In my DC, I have three hosts added:<br></blockquote><= /blockquote></blockquote></blockquote></blockquote></blockquote></blockquot= e><blockquote type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"c= ite"><blockquote type=3D"cite"><blockquote type=3D"cite"><blockquote type= =3D"cite"><blockquote type=3D"cite"><br></blockquote></blockquote></blockqu= ote></blockquote></blockquote></blockquote></blockquote><blockquote type=3D= "cite"><blockquote type=3D"cite"><blockquote type=3D"cite"><blockquote type= =3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite"><blockquote t= ype=3D"cite">hostA<br></blockquote></blockquote></blockquote></blockquote><= /blockquote></blockquote></blockquote><blockquote type=3D"cite"><blockquote= type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite"><blockqu= ote type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite">hostB= <br></blockquote></blockquote></blockquote></blockquote></blockquote></bloc= kquote></blockquote><blockquote type=3D"cite"><blockquote type=3D"cite"><bl= ockquote type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite">= <blockquote type=3D"cite"><blockquote type=3D"cite">hostC<br></blockquote><= /blockquote></blockquote></blockquote></blockquote></blockquote></blockquot= e><blockquote type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"c= ite"><blockquote type=3D"cite"><blockquote type=3D"cite"><blockquote type= =3D"cite"><blockquote type=3D"cite"><br></blockquote></blockquote></blockqu= ote></blockquote></blockquote></blockquote></blockquote><blockquote type=3D= "cite"><blockquote type=3D"cite"><blockquote type=3D"cite"><blockquote type= =3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite"><blockquote t= ype=3D"cite">I want a way to force only to use hostA as a proxy for power<b= r></blockquote></blockquote></blockquote></blockquote></blockquote></blockq= uote></blockquote><blockquote type=3D"cite"><blockquote type=3D"cite"><bloc= kquote type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite"><b= lockquote type=3D"cite"><blockquote type=3D"cite">commands.<br></blockquote= blockquote type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite= "><blockquote type=3D"cite"><blockquote type=3D"cite"><br></blockquote></bl= ockquote></blockquote></blockquote></blockquote><blockquote type=3D"cite"><= blockquote type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite= "><blockquote type=3D"cite"><br></blockquote></blockquote></blockquote></bl= ockquote></blockquote><blockquote type=3D"cite"><blockquote type=3D"cite"><= blockquote type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite= ">Let me explain a little to make you better understand my reasoning<br></b= lockquote></blockquote></blockquote></blockquote></blockquote><blockquote t= ype=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite"><blockquot= e type=3D"cite"><blockquote type=3D"cite">behind this configuration.<br></b= lockquote></blockquote></blockquote></blockquote></blockquote><blockquote t= ype=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite"><blockquot= e type=3D"cite"><blockquote type=3D"cite"><br></blockquote></blockquote></b= lockquote></blockquote></blockquote><blockquote type=3D"cite"><blockquote t= ype=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite"><blockquot= e type=3D"cite">We work with segmented, separated networks. One network for= public<br></blockquote></blockquote></blockquote></blockquote></blockquote= blockquote type=3D"cite"><blockquote type=3D"cite">power-management, the no= des would require three interfaces each,<br></blockquote></blockquote></blo= ckquote></blockquote></blockquote><blockquote type=3D"cite"><blockquote typ= e=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite"><blockquote = type=3D"cite">and the<br></blockquote></blockquote></blockquote></blockquot= e></blockquote><blockquote type=3D"cite"><blockquote type=3D"cite"><blockqu= ote type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite">metal= we are using for hosts just don=B4t have that. But if we can<br></blockquo= te></blockquote></blockquote></blockquote></blockquote><blockquote type=3D"= cite"><blockquote type=3D"cite"><blockquote type=3D"cite"><blockquote type= =3D"cite"><blockquote type=3D"cite">use the<br></blockquote></blockquote></= blockquote></blockquote></blockquote><blockquote type=3D"cite"><blockquote = type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite"><blockquo= te type=3D"cite">engine to do that, the hosts would only require two interf= aces, which<br></blockquote></blockquote></blockquote></blockquote></blockq= uote><blockquote type=3D"cite"><blockquote type=3D"cite"><blockquote type= =3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite">most 1U serve= rs are equipped with as standard (plus one<br></blockquote></blockquote></b= lockquote></blockquote></blockquote><blockquote type=3D"cite"><blockquote t= ype=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite"><blockquot= e type=3D"cite">iLO/IPMI/whatev), so we can use them as hosts without issue= . Then the<br></blockquote></blockquote></blockquote></blockquote></blockqu= ote><blockquote type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D= "cite"><blockquote type=3D"cite"><blockquote type=3D"cite">backend has one = extra interface that it can use to communicate over the<br></blockquote></b= lockquote></blockquote></blockquote></blockquote><blockquote type=3D"cite">= <blockquote type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cit= e"><blockquote type=3D"cite">power management network to the respective ser= vice processor with.<br></blockquote></blockquote></blockquote></blockquote= blockquote></blockquote></blockquote></blockquote></blockquote><blockquote = type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite"><blockquo= te type=3D"cite"><blockquote type=3D"cite">Is there a "better" way to achie= ve what we are aiming for? Ideally, I<br></blockquote></blockquote></blockq= uote></blockquote></blockquote><blockquote type=3D"cite"><blockquote type= =3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite"><blockquote t= ype=3D"cite">would like to set up the two NICs in a bond and create VLAN-in= terfaces<br></blockquote></blockquote></blockquote></blockquote></blockquot= e><blockquote type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"c= ite"><blockquote type=3D"cite"><blockquote type=3D"cite">on top of that bon= d. That way, I can have as many virtual interfaces as<br></blockquote></blo= ckquote></blockquote></blockquote></blockquote><blockquote type=3D"cite"><b= lockquote type=3D"cite"><blockquote type=3D"cite"><blockquote type=3D"cite"= blockquote></blockquote><blockquote type=3D"cite"><blockquote type=3D"cite"= the engine as a host as well.<br></blockquote></blockquote></blockquote></b= lockquote><blockquote type=3D"cite"><blockquote type=3D"cite"><blockquote t= ype=3D"cite"><br></blockquote></blockquote></blockquote><blockquote type=3D= "cite"><blockquote type=3D"cite"><blockquote type=3D"cite">Exactly, I can l= ive with #2, as I have the engine added as hostA in my DC<br></blockquote><= /blockquote></blockquote><blockquote type=3D"cite"><blockquote type=3D"cite= "><br></blockquote></blockquote><blockquote type=3D"cite"><blockquote type= =3D"cite">well, the question is if choosing another host to use for fencing= <br></blockquote></blockquote><blockquote type=3D"cite"><blockquote type=3D= "cite">would/should be limited to hosts from same DC, then engine can only = be<br></blockquote></blockquote><blockquote type=3D"cite"><blockquote type= =3D"cite">used to fence one DC.<br></blockquote></blockquote><blockquote ty= pe=3D"cite"><br></blockquote><blockquote type=3D"cite">I=B4m quoting you he= re:<br></blockquote><blockquote type=3D"cite">"1. power management is DC wi= de, not cluster."<br></blockquote><blockquote type=3D"cite"><br></blockquot= e><blockquote type=3D"cite">So this wouldn=B4t be any different from it=B4s= current state.<br></blockquote><br>true, but if you have multiple DCs, eng= ine as a host can be used to <br>fence only one DC.<br>while if engine is '= special', it can be used to fence in all DCs<br></div></blockquote><div><br= href=3D"mailto:karli.sjoberg@slu.se">karli.sjoberg@slu.se</a> <<a href= =3D"mailto:karli.sjoberg@adm.slu.se">mailto:karli.sjoberg@adm.slu.se</a>>= ;<br></blockquote><blockquote type=3D"cite"><br></blockquote><br><br></div>= </blockquote></div><br><div> <span class=3D"Apple-style-span" style=3D"border-collapse: separate; color:= rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: no= rmal; font-weight: normal; letter-spacing: normal; line-height: normal; orp= hans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; = white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizonta= l-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorati= ons-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-wi= dth: 0px; font-size: medium; "><div><br class=3D"Apple-interchange-newline"=

<br></div><div>Med V=E4nliga H=E4lsningar<br>-----------------------------= --------------------------------------------------<br>Karli Sj=F6berg<br>Sw= edish University of Agricultural Sciences<br>Box 7079 (Visiting Address Kro= n=E5sv=E4gen 8)<br>S-750 07 Uppsala, Sweden<br>Phone:  +46-(0)18-67 15= 66</div><div><a href=3D"mailto:karli.sjoberg@adm.slu.se">karli.sjoberg@slu= .se</a></div></span> </div> <br></body></html>=

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