GitHub user akrasnov-drv created a discussion: I'd like a clarification on CS 
planner algorythms

Hi,
I have quite a weird problem. 
I want each new VM to start on another host.
I tried using random planner, then switched to userdispersing, added the 
setting also to storage, everything to no avail.
VMs are created on the same host in blocks, e.g. 5 VMs on the same host in a 
raw, then another host, but keeping use just of this 2. And just after some 
time it continues to additional host.
I have no problem to start VM on particular host by specifying it in VM 
deployment. But if I allow CS to choose, it does the above.
If it changes anything, I have single cluster and single pod, and I use local 
storage for VMs.

Here are settings I tried:
+ vm.allocation.algorithm (random, userdispersing)
+ vm.deployment.planner (userdispersing)
+ deployment.planners.exclude (removed some defalut values keeping just 
SkipHeuresticsPlanner)
+ deployment.planners.order (moved UserDispersingPlanner to be the 1st)
+ image.store.allocation.algorithm (random)

Please explain/advise. 



GitHub link: https://github.com/apache/cloudstack/discussions/11412

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