[ClusterLabs] Fencing with a 3-node (1 for quorum only) cluster

I'm setting up an HA NFS server to serve up storage to a couple of vsphere hosts. I have a virtual IP, and it depends on a ZFS resource agent which imports or exports a pool. So far, with stonith disabled, it all works perfectly. I was dubious about a 2-node solution, so I created a 3rd

Re: [ClusterLabs] Fencing with a 3-node (1 for quorum only) cluster

On 2016-08-04 19:03, Digimer wrote: On 04/08/16 06:56 PM, Dan Swartzendruber wrote: I'm setting up an HA NFS server to serve up storage to a couple of vsphere hosts. I have a virtual IP, and it depends on a ZFS resource agent which imports or exports a pool. So far, with stonith disabled

Re: [ClusterLabs] Fencing with a 3-node (1 for quorum only) cluster

On 2016-08-04 19:33, Digimer wrote: On 04/08/16 07:21 PM, Dan Swartzendruber wrote: On 2016-08-04 19:03, Digimer wrote: On 04/08/16 06:56 PM, Dan Swartzendruber wrote: I'm setting up an HA NFS server to serve up storage to a couple of vsphere hosts. I have a virtual IP, and it depends

Re: [ClusterLabs] Fencing with a 3-node (1 for quorum only) cluster

A lot of good suggestions here. Unfortunately, my budget is tapped out for the near future at least (this is a home lab/soho setup). I'm inclined to go with Digimer's two-node approach, with IPMI fencing. I understand mobos can die and such. In such a long-shot, manual intervention is

Re: [ClusterLabs] Fencing with a 3-node (1 for quorum only) cluster

On 2016-08-06 21:59, Digimer wrote: On 06/08/16 08:22 PM, Dan Swartzendruber wrote: On 2016-08-06 19:46, Digimer wrote: On 06/08/16 07:33 PM, Dan Swartzendruber wrote: (snip) What about using ipmitool directly? I can't imagine that such a long time is normal. Maybe there is a firmware

Re: [ClusterLabs] Fencing with a 3-node (1 for quorum only) cluster

Okay, I almost have this all working. fence_ipmilan for the supermicro host. Had to specify lanplus for it to work. fence_drac5 for the R905. That was failing to complete due to timeout. Found a couple of helpful posts that recommended increase the retry count to 3 and the timeout to

Re: [ClusterLabs] Fencing with a 3-node (1 for quorum only) cluster

On 2016-08-06 21:59, Digimer wrote: On 06/08/16 08:22 PM, Dan Swartzendruber wrote: On 2016-08-06 19:46, Digimer wrote: On 06/08/16 07:33 PM, Dan Swartzendruber wrote: (snip) What about using ipmitool directly? I can't imagine that such a long time is normal. Maybe there is a firmware

Re: [ClusterLabs] Solved: converting configuration

On 2016-08-25 10:24, Gabriele Bulfon wrote: YESSS!!! That was it! :))) Upgraded to 1.1.15, rebuilt and the rng files contain a lot more stuff. Packaged, published, installed on the test machine: got all my instructions as is!!! :))) ...now last stepsmaking our custom agents/shells work on

Re: [ClusterLabs] fence_apc delay?

On 2016-09-02 10:09, Ken Gaillot wrote: On 09/02/2016 08:14 AM, Dan Swartzendruber wrote: So, I was testing my ZFS dual-head JBOD 2-node cluster. Manual failovers worked just fine. I then went to try an acid-test by logging in to node A and doing 'systemctl stop network'. Sure enough

Re: [ClusterLabs] fence_apc delay?

It occurred to me folks reading this might not have any knowledge about ZFS. Think of my setup as an mdraid pool with a filesystem mounted on it, shared out via NFS. Same basic idea... ___ Users mailing list: Users@clusterlabs.org

[ClusterLabs] fence_apc delay?

So, I was testing my ZFS dual-head JBOD 2-node cluster. Manual failovers worked just fine. I then went to try an acid-test by logging in to node A and doing 'systemctl stop network'. Sure enough, pacemaker told the APC fencing agent to power-cycle node A. The ZFS pool moved to node B as

Re: [ClusterLabs] fence_apc delay?

On 2016-09-03 08:41, Marek Grac wrote: Hi, There are two problems mentioned in the email. 1) power-wait Power-wait is a quite advanced option and there are only few fence devices/agent where it makes sense. And only because the HW/firmware on the device is somewhat broken. Basically, when we

Re: [ClusterLabs] Antw: Re: fence_apc delay?

On 2016-09-05 03:04, Ulrich Windl wrote: Marek Grac schrieb am 03.09.2016 um 14:41 in Nachricht : Hi, There are two problems mentioned in the email. 1) power-wait Power-wait is a quite advanced option and

Re: [ClusterLabs] fence_apc delay?

On 2016-09-06 10:59, Ken Gaillot wrote: [snip] I thought power-wait was intended for this situation, where the node's power supply can survive a brief outage, so a delay is needed to ensure it drains. In any case, I know people are using it for that. Are there any drawbacks to using

Re: [ClusterLabs] Location constraints for fencing resources?

On 2016-09-12 10:48, Dan Swartzendruber wrote: Posting this as a separate thread from my fence_apc one. As I said in that thread, I created two fence_apc agents, one to fence node A and one to fence node B. Each was configured using a static pcmk node mapping, and constrained to only run

Re: [ClusterLabs] Location constraints for fencing resources?

On 2016-09-13 00:20, Klaus Wenninger wrote: Location-constraints for fencing-resources are definitely supported and don't just work by accident - if this was the question. On 09/13/2016 02:43 AM, Dan Swartzendruber wrote: On 2016-09-12 10:48, Dan Swartzendruber wrote: Posting

[ClusterLabs] Location constraints for fencing resources?

Posting this as a separate thread from my fence_apc one. As I said in that thread, I created two fence_apc agents, one to fence node A and one to fence node B. Each was configured using a static pcmk node mapping, and constrained to only run on the other node. In the process of testing

Re: [ClusterLabs] ClusterLabs] Failing over NFSv4/TCP exports

Thanks for the info. I only use esxi, which likely explains why I never had issues... Patrick Zwahlen wrote: >Hi, > >> -Original Message- >> From: Andreas Kurz [mailto:andreas.k...@gmail.com] >> Sent: mercredi, 17 août 2016 23:16 >> To: Cluster Labs - All topics

Re: [ClusterLabs] connection timed out fence_virsh monitor stonith

On 2020-02-24 12:17, Strahil Nikolov wrote: On February 24, 2020 4:56:07 PM GMT+02:00, Luke Camilleri wrote: Hello users, I would like to ask for assistance on the below setup please, mainly on the monitor fence timeout: I notice that the issue happens at 00:00 on both days . Have you

Re: [ClusterLabs] 2 node clusters - ipmi fencing

I believe you in fact want each fence agent to run on the other node, yes. On February 20, 2020, at 6:23 PM, Ricardo Esteves wrote: Hi, I have a question regarding fencing, i have 2 physical servers: node01, node02, each one has an ipmi card so i create 2 fence devices: fence_ipmi_node01

[ClusterLabs] fence-scsi question

I have a 2-node CentOS7 cluster running ZFS. The two nodes (vsphere appliances on different hosts) access 2 SAS SSD in a Supermicro JBOD with 2 mini-SAS connectors. It all works fine - failover and all. My quandary was how to implement fencing. I was able to get both of the vmware SOAP

Re: [ClusterLabs] fence-scsi question

On 2020-02-10 00:06, Strahil Nikolov wrote: On February 10, 2020 2:07:01 AM GMT+02:00, Dan Swartzendruber wrote: I have a 2-node CentOS7 cluster running ZFS. The two nodes (vsphere appliances on different hosts) access 2 SAS SSD in a Supermicro JBOD with 2 mini-SAS connectors. It all works

Re: [ClusterLabs] Stonith configuration

On 2020-02-14 13:06, Strahil Nikolov wrote: On February 14, 2020 4:44:53 PM GMT+02:00, "BASDEN, ALASTAIR G." wrote: Hi Strahil, Note2: Consider adding a third node /for example a VM/ or a qdevice on a separate node (allows to be on a separate network, so a simple routing is the only

Re: [ClusterLabs] How to unfence without reboot (fence_mpath)

Many people don't have red hat access, so linking those urls is not useful. On February 17, 2020, at 1:40 AM, Strahil Nikolov wrote: Hello Ondrej, thanks for your reply. I really appreciate that. I have picked fence_multipath as I'm preparing for my EX436 and I can't know what agent will be

Re: [ClusterLabs] 2 node clusters - ipmi fencing

On 2020-02-21 08:51, Ricardo Esteves wrote: Hi, I'm trying to understand what is the objective of the constraints to have the fencing devices running on opposite node or on its own node or running all on the same node. Can you explain the difference? IPMI fencing involves the instance

Re: [ClusterLabs] Preferred node for a service (not constrained)

On 2020-11-30 23:21, Petr Bena wrote: Hello, Is there a way to setup a preferred node for a service? I know how to create constrain that will make it possible to run a service ONLY on certain node, or constrain that will make it impossible to run 2 services on same node, but I don't want any of