Re: [Users] Fencing virtual machines
Hi, I just wanted to thank you on this issue as my recent works with it were successful. Have a nice day. -- Nicolas Ecarnot Le 08/11/2013 09:43, René Koch (ovido) a écrit : On Fri, 2013-11-08 at 08:49 +0100, Nicolas Ecarnot wrote: Le 08/11/2013 08:23, Eli Mesika a écrit : - Original Message - From: "Mike Burns" To: "Nicolas Ecarnot" , users@ovirt.org Sent: Thursday, November 7, 2013 4:10:36 PM Subject: Re: [Users] Fencing virtual machines On 11/07/2013 09:03 AM, Nicolas Ecarnot wrote: Hi, In the case I want to setup a virtual cluster amongst many virtual machines, and this virtual cluster needs to fence some VM, what is the best way to achieve this? I guess this has to use something like vdsClient to "unplug" the VM, but I found it hard to find any more information about this. I haven't tried but the fence-agents package (fence-agents-rhevm on Fedora) has a fence_rhevm tool that will probably work for you. Please let us know if that worked for you. Thank you all for your answer. I installed it and began to try to play with it, and it seems to be EXACTLY what I was looking for. It's still not clear for me to see what I have to install on the "stonith" targets - or who is eventually in charge of applying the kill action (the manager, one node, any node ?) but I promise I'm still reading and testing on my own. Your vms are killed/restarted by ovirt-engine using the REST-API (on behalf of one of the cluster members of course). So you don't have to install anything except the fence-agents on all your cluster members (vms) and make sure they can reach port 443 (or 8443 depending on your setup) of ovirt-engine... Regards, René Thank you, have a nice day. -- Nicolas Ecarnot ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Re: [Users] Fencing virtual machines
On Fri, 2013-11-08 at 08:49 +0100, Nicolas Ecarnot wrote: > Le 08/11/2013 08:23, Eli Mesika a écrit : > > > > > > - Original Message - > >> From: "Mike Burns" > >> To: "Nicolas Ecarnot" , users@ovirt.org > >> Sent: Thursday, November 7, 2013 4:10:36 PM > >> Subject: Re: [Users] Fencing virtual machines > >> > >> On 11/07/2013 09:03 AM, Nicolas Ecarnot wrote: > >>> Hi, > >>> > >>> In the case I want to setup a virtual cluster amongst many virtual > >>> machines, and this virtual cluster needs to fence some VM, what is the > >>> best way to achieve this? > >>> > >>> I guess this has to use something like vdsClient to "unplug" the VM, but > >>> I found it hard to find any more information about this. > >>> > >> > >> I haven't tried but the fence-agents package (fence-agents-rhevm on > >> Fedora) has a fence_rhevm tool that will probably work for you. > > > > Please let us know if that worked for you. > > Thank you all for your answer. I installed it and began to try to play > with it, and it seems to be EXACTLY what I was looking for. > > It's still not clear for me to see what I have to install on the > "stonith" targets - or who is eventually in charge of applying the kill > action (the manager, one node, any node ?) but I promise I'm still > reading and testing on my own. Your vms are killed/restarted by ovirt-engine using the REST-API (on behalf of one of the cluster members of course). So you don't have to install anything except the fence-agents on all your cluster members (vms) and make sure they can reach port 443 (or 8443 depending on your setup) of ovirt-engine... Regards, René > > Thank you, have a nice day. > ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Re: [Users] Fencing virtual machines
Le 08/11/2013 08:23, Eli Mesika a écrit : - Original Message - From: "Mike Burns" To: "Nicolas Ecarnot" , users@ovirt.org Sent: Thursday, November 7, 2013 4:10:36 PM Subject: Re: [Users] Fencing virtual machines On 11/07/2013 09:03 AM, Nicolas Ecarnot wrote: Hi, In the case I want to setup a virtual cluster amongst many virtual machines, and this virtual cluster needs to fence some VM, what is the best way to achieve this? I guess this has to use something like vdsClient to "unplug" the VM, but I found it hard to find any more information about this. I haven't tried but the fence-agents package (fence-agents-rhevm on Fedora) has a fence_rhevm tool that will probably work for you. Please let us know if that worked for you. Thank you all for your answer. I installed it and began to try to play with it, and it seems to be EXACTLY what I was looking for. It's still not clear for me to see what I have to install on the "stonith" targets - or who is eventually in charge of applying the kill action (the manager, one node, any node ?) but I promise I'm still reading and testing on my own. Thank you, have a nice day. -- Nicolas Ecarnot ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Re: [Users] Fencing virtual machines
- Original Message - > From: "Mike Burns" > To: "Nicolas Ecarnot" , users@ovirt.org > Sent: Thursday, November 7, 2013 4:10:36 PM > Subject: Re: [Users] Fencing virtual machines > > On 11/07/2013 09:03 AM, Nicolas Ecarnot wrote: > > Hi, > > > > In the case I want to setup a virtual cluster amongst many virtual > > machines, and this virtual cluster needs to fence some VM, what is the > > best way to achieve this? > > > > I guess this has to use something like vdsClient to "unplug" the VM, but > > I found it hard to find any more information about this. > > > > I haven't tried but the fence-agents package (fence-agents-rhevm on > Fedora) has a fence_rhevm tool that will probably work for you. Please let us know if that worked for you. > ___ > 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: [Users] Fencing virtual machines
On 11/07/2013 09:03 AM, Nicolas Ecarnot wrote: Hi, In the case I want to setup a virtual cluster amongst many virtual machines, and this virtual cluster needs to fence some VM, what is the best way to achieve this? I guess this has to use something like vdsClient to "unplug" the VM, but I found it hard to find any more information about this. I haven't tried but the fence-agents package (fence-agents-rhevm on Fedora) has a fence_rhevm tool that will probably work for you. ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
Re: [Users] Fencing virtual machines
On Thu, 2013-11-07 at 15:03 +0100, Nicolas Ecarnot wrote: > Hi, > > In the case I want to setup a virtual cluster amongst many virtual > machines, and this virtual cluster needs to fence some VM, what is the > best way to achieve this? > > I guess this has to use something like vdsClient to "unplug" the VM, but > I found it hard to find any more information about this. > If you're using e.g. Red Hat Cluster there's a fence agent named fence_rhevm which can be used to fence virtual machines in RHEV or oVirt environments. Regards, René ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
[Users] Fencing virtual machines
Hi, In the case I want to setup a virtual cluster amongst many virtual machines, and this virtual cluster needs to fence some VM, what is the best way to achieve this? I guess this has to use something like vdsClient to "unplug" the VM, but I found it hard to find any more information about this. -- Nicolas Ecarnot ___ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users
