Re: [ClusterLabs] Antw: Re: meatware stonith
On 2018-09-27 03:13 AM, Kristoffer Grönlund wrote: > On Thu, 2018-09-27 at 02:49 -0400, Digimer wrote: >> On 2018-09-27 01:54 AM, Ulrich Windl wrote: >> Digimer schrieb am 26.09.2018 um 18:29 in >> Nachricht >>> >>> <1c70b5e2-ea8e-8cbe-3d83-e207ca47b...@alteeve.ca>: On 2018-09-26 11:11 AM, Patrick Whitney wrote: > Hey everyone, > > I'm doing some pacemaker/corosync/dlm/clvm testing. I'm > without a power > fencing solution at the moment, so I wanted to utilize > meatware, but it > doesn't show when I list available stonith devices (pcs stonith > list). > > I do seem to have it on the system, as cluster-glue is > installed, and I > see meatware.so and meatclient on the system, and I also see > meatware > listed when running the command 'stonith -L' > > Can anyone guide me as to how to create a stonith meatware > resource > using pcs? > > Best, > -Pat The "fence_manual" agent was removed after EL5 days, a lng time ago, because it so often led to split-brains because of misuse. Manual fencing is NOT recommended. There are new options, like SBD (storage-based death) if you have a watchdog timer. >>> >>> And even if you do not ;-) >> >> I've not used SBD. How, without a watchdog timer, can you be sure the >> target node is dead? > > You can't. You can use the Linux softdog module though, but since it is > a pure software solution it is limited and not ideal. That was my understanding, thank you. -- Digimer Papers and Projects: https://alteeve.com/w/ "I am, somehow, less interested in the weight and convolutions of Einstein’s brain than in the near certainty that people of equal talent have lived and died in cotton fields and sweatshops." - Stephen Jay Gould ___ Users mailing list: Users@clusterlabs.org https://lists.clusterlabs.org/mailman/listinfo/users Project Home: http://www.clusterlabs.org Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf Bugs: http://bugs.clusterlabs.org
Re: [ClusterLabs] Antw: Re: meatware stonith
On Thu, 2018-09-27 at 02:49 -0400, Digimer wrote: > On 2018-09-27 01:54 AM, Ulrich Windl wrote: > > > > > Digimer schrieb am 26.09.2018 um 18:29 in > > > > > Nachricht > > > > <1c70b5e2-ea8e-8cbe-3d83-e207ca47b...@alteeve.ca>: > > > On 2018-09-26 11:11 AM, Patrick Whitney wrote: > > > > Hey everyone, > > > > > > > > I'm doing some pacemaker/corosync/dlm/clvm testing. I'm > > > > without a power > > > > fencing solution at the moment, so I wanted to utilize > > > > meatware, but it > > > > doesn't show when I list available stonith devices (pcs stonith > > > > list). > > > > > > > > I do seem to have it on the system, as cluster-glue is > > > > installed, and I > > > > see meatware.so and meatclient on the system, and I also see > > > > meatware > > > > listed when running the command 'stonith -L' > > > > > > > > Can anyone guide me as to how to create a stonith meatware > > > > resource > > > > using pcs? > > > > > > > > Best, > > > > -Pat > > > > > > The "fence_manual" agent was removed after EL5 days, a lng > > > time ago, > > > because it so often led to split-brains because of misuse. Manual > > > fencing is NOT recommended. > > > > > > There are new options, like SBD (storage-based death) if you have > > > a > > > watchdog timer. > > > > And even if you do not ;-) > > I've not used SBD. How, without a watchdog timer, can you be sure the > target node is dead? You can't. You can use the Linux softdog module though, but since it is a pure software solution it is limited and not ideal. > -- Cheers, Kristoffer ___ Users mailing list: Users@clusterlabs.org https://lists.clusterlabs.org/mailman/listinfo/users Project Home: http://www.clusterlabs.org Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf Bugs: http://bugs.clusterlabs.org
Re: [ClusterLabs] Antw: Re: meatware stonith
On 2018-09-27 01:54 AM, Ulrich Windl wrote: Digimer schrieb am 26.09.2018 um 18:29 in Nachricht > <1c70b5e2-ea8e-8cbe-3d83-e207ca47b...@alteeve.ca>: >> On 2018-09-26 11:11 AM, Patrick Whitney wrote: >>> Hey everyone, >>> >>> I'm doing some pacemaker/corosync/dlm/clvm testing. I'm without a power >>> fencing solution at the moment, so I wanted to utilize meatware, but it >>> doesn't show when I list available stonith devices (pcs stonith list). >>> >>> I do seem to have it on the system, as cluster-glue is installed, and I >>> see meatware.so and meatclient on the system, and I also see meatware >>> listed when running the command 'stonith -L' >>> >>> Can anyone guide me as to how to create a stonith meatware resource >>> using pcs? >>> >>> Best, >>> -Pat >> >> The "fence_manual" agent was removed after EL5 days, a lng time ago, >> because it so often led to split-brains because of misuse. Manual >> fencing is NOT recommended. >> >> There are new options, like SBD (storage-based death) if you have a >> watchdog timer. > > And even if you do not ;-) I've not used SBD. How, without a watchdog timer, can you be sure the target node is dead? -- Digimer Papers and Projects: https://alteeve.com/w/ "I am, somehow, less interested in the weight and convolutions of Einstein’s brain than in the near certainty that people of equal talent have lived and died in cotton fields and sweatshops." - Stephen Jay Gould ___ Users mailing list: Users@clusterlabs.org https://lists.clusterlabs.org/mailman/listinfo/users Project Home: http://www.clusterlabs.org Getting started: http://www.clusterlabs.org/doc/Cluster_from_Scratch.pdf Bugs: http://bugs.clusterlabs.org
