8:59 p.m.
VM to VM affinity will try and run the VMs on the same host if positive, and different
hosts if negative.
VM to Host affinity will try and run the VM on a specific set of Hosts if positive, and
not on those hosts if negative.
Enforcing will keep the scheduler from launching a VM if it can’t meet those criteria, and
will try and make changes to which hosts are running where if it can. If you don’t set it,
it will still try and launch VMs on different hosts, but if it can’t, it will still launch
the VM. It also won’t make changes to bring all VMs into compliance with the Affinity
rules, from what I can tel.
On Oct 14, 2018, at 8:15 AM, Hari Prasanth Loganathan
<hariprasanth.l(a)msystechnologies.com> wrote:
Hi Team,
I tried to follow up the affinity rules using this tutorial :
https://www.youtube.com/watch?v=rs_5BSqacWE
<https://www.youtube.com/watch?v=rs_5BSqacWE> but I have few clarifications in it.,
1) I understand the VM to VM affinity, It means both the individual VMs needs to run on a
single common host, Say I have 2 hosts, so what happens in case of failure of host running
the VMs?
2) If I create a affinity group and I get the following data,
i) What is host rule / vms rule - enabled, enforcing and positive ?
"enforcing": "true",
"hosts_rule": {
"enabled": "true",
"enforcing": "true",
"positive": "false"
},
"vms_rule": {
"enabled": "false",
"enforcing": "true",
"positive": "false"
}
3) What is the difference between VM to VM affinity and VM to Host affinity?
Doc's are not very clear, so please any help is appreciated.
Thanks,
Hari
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