Re: [Pacemaker] fencing best practices for virtual environments

2012-09-11 Thread Alberto Menichetti
Hi Lars, thank you very much for the deep explanation. Regards, Alberto On 09/10/2012 03:42 PM, Lars Marowsky-Bree wrote: On 2012-09-10T14:40:43, Alberto Menichetti wrote: Sorry, maybe I'm missing something, but suppose this scenario (also remember that, being a 2-node cluster, I had to set

Re: [Pacemaker] fencing best practices for virtual environments

2012-09-10 Thread Lars Marowsky-Bree
On 2012-09-10T14:40:43, Alberto Menichetti wrote: > Sorry, maybe I'm missing something, but suppose this scenario (also > remember that, being a 2-node cluster, I had to set > no-quorum-policy="ignore"): > 1. the virtual center is unavailable > 2. an event occurs that partition the cluster > 3. a

Re: [Pacemaker] fencing best practices for virtual environments

2012-09-10 Thread Alberto Menichetti
On 09/10/2012 12:15 PM, Lars Marowsky-Bree wrote: On 2012-09-10T10:45:30, Alberto Menichetti wrote: thank you for the quick response. Maybe SPOF is not the best definition, but when the vcenter is unavailable the safety of my data is not guaranteed. The safety remains guaranteed; the availabi

Re: [Pacemaker] fencing best practices for virtual environments

2012-09-10 Thread Lars Marowsky-Bree
On 2012-09-10T10:45:30, Alberto Menichetti wrote: > thank you for the quick response. > Maybe SPOF is not the best definition, but when the vcenter is > unavailable the safety of my data is not guaranteed. The safety remains guaranteed; the availability of your service wouldn't be ;-) > >>The f

Re: [Pacemaker] fencing best practices for virtual environments

2012-09-10 Thread Alberto Menichetti
On 09/09/2012 09:53 PM, Lars Marowsky-Bree wrote: On 2012-09-09T13:30:36, Alberto Menichetti wrote: I've successfully configured and tested the stonith plugin "external/vcenter"; but this plugin introduces a single point of failure in my cluster infrastructure because it depends on the availa

Re: [Pacemaker] fencing best practices for virtual environments

2012-09-09 Thread renayama19661014
Hi Alberto, I think that I should set plural external/vcenter if your problem is practice of stonith when vcenter falls and is not usable. Please refer to the next email and patch. * http://www.gossamer-threads.com/lists/linuxha/dev/78702 Best Regards, Hideo Yamauchi. --- On Sun, 2012/9/9, Al

Re: [Pacemaker] fencing best practices for virtual environments

2012-09-09 Thread Lars Marowsky-Bree
On 2012-09-09T13:30:36, Alberto Menichetti wrote: > I've successfully configured and tested the stonith plugin > "external/vcenter"; but this plugin introduces a single point of > failure in my cluster infrastructure because it depends on the > availability of the virtual center (which is, in the

[Pacemaker] fencing best practices for virtual environments

2012-09-09 Thread Alberto Menichetti
Hi all, I'm setting up a two-node pacemaker cluster (SLES-HA Extension) on vmware vsphere 5. I've successfully configured and tested the stonith plugin "external/vcenter"; but this plugin introduces a single point of failure in my cluster infrastructure because it depends on the availability o