piedthepiper
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When enabling HA on a cluster some VMs try to failover and fail? vCenter 5.5u3b ESXi5.1
So I upgraded vCenter from 5.1 to 5.5u3b, I disabled HA/DRS before the upgrade and when I re-enabled HA post upgrade on the cluster (ESXi5.1) 4 hosts in the cluster started to attempt HA failover. This happened at the exact same time the HA agents were being installed on all the hosts in the cluster?
Nothing actually failed over, but I got a bunch of "vSphere HA virtual machine failover failed" cluster level alarms.
The cluster is a mix of dell r710 and dell r720 hosts, and it was only the r720 hosts that this happened on. Yet I have another cluster with just r720 hosts where this didn't happen. They all run ESXI 5.1 and are all on the same firmware/BIOS etc.
Since it happened as the HA agent was being installed on the all the hosts in the cluster, I am assuming it was some kind of glitch? I haven't found any KB articles relating to it
Nothing actually failed over, but I got a bunch of "vSphere HA virtual machine failover failed" cluster level alarms.
The cluster is a mix of dell r710 and dell r720 hosts, and it was only the r720 hosts that this happened on. Yet I have another cluster with just r720 hosts where this didn't happen. They all run ESXI 5.1 and are all on the same firmware/BIOS etc.
Since it happened as the HA agent was being installed on the all the hosts in the cluster, I am assuming it was some kind of glitch? I haven't found any KB articles relating to it
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I would recommend you test VMware HA, before Production, and be brutal, and just power OFF a Host!
It does not have to have Production VMs, Test VMs, will do, but then at least you know, what to expect, if it all works!
It does not have to have Production VMs, Test VMs, will do, but then at least you know, what to expect, if it all works!
ASKER
I agree pulling the plug is the best way to test it.
Cheers Andrew!
Cheers Andrew!
VMware
VMware, a software company founded in 1998, was one of the first commercially successful companies to offer x86 virtualization. The storage company EMC purchased VMware in 1994. Dell Technologies acquired EMC in 2016. VMware’s parent company is now Dell Technologies. VMware has many software products that run on desktops, Microsoft Windows, Linux, and macOS, which allows the virtualizing of the x86 architecture. Its enterprise software hypervisor for servers, VMware vSphere Hypervisor (ESXi), is a bare-metal hypervisor that runs directly on the server hardware and does not require an additional underlying operating system.
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Actually HA was never even enabled before I started here lol I have configured % failover on the clusters for N+1. But it hasn't been fully tested,.....yet. it is on my list along with getting SRM up and running!