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Hi Alex,
El 5/7/21 a las 13:18, Alex K escribió:
Hi all,
I'm new to proxmox and trying to setup a 2 + 1 node active/active HA
cluster on top glusterfs using latest community pve-manager/6.4-4/337d6701
(running kernel: 5.4.106-1-pve). The third node is used for gluster
arbitration and perhaps I have to configure in it a quorum disk also to
keep quorum in case of a node failure (not clear yet at my mind, still
reading the docs).
If you have 3 nodes, you want all them in Proxmox cluster for proper
quorum majority. No need for quorum disk that way. (note that I don't
know how gluster works).
I am stuck at the moment at the fencing part of the setup. Reading through
the docs it seems that I have only the option to setup hardware watchdog
fencing. I would expect to be able to use external media such as IPMI,
iDrac, HP iLO or UPS based power management (APC) though I can't find any
info how these are configured at current version of Proxmox.
Currently by default Proxmox uses a software watchdog. I'm not sure if
hardware watchdog support was introduced, others may help with this.
In case of a network partition and not a node hardware issue, how is the
watchdog going to behave? Is a healthy but disconnected node going to be
power cycled? I will soon proceed with testing as soon as I manage to setup
fencing though I wanted to better understand this part of fencing.
The node that drops out of quorum will be rebooted. If there where
CM/CTs configured for HA in that node, Proxmox will attempt to restart
them in another node.
Cheers
Eneko Lacunza
Zuzendari teknikoa | Director técnico
Binovo IT Human Project
Tel. +34 943 569 206 | https://www.binovo.es
Astigarragako Bidea, 2 - 2º izda. Oficina 10-11, 20180 Oiartzun
https://www.youtube.com/user/CANALBINOVO
https://www.linkedin.com/company/37269706/
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