please give documentation about DRS rules

[Zugschlus]

Hi,
I would like to create virtual machines with a DRS rule to not place two machines (culster nodes) together on the same ESX server if possible. I have seen in the change log that fog-vsphere supports DRS rules but there is absolutly no documentation. Is it possible to have docs or even examples, so that I can try making sense out of things with the help of my VMware people?
Thanks!
Greetings
Marc

[jrgarcia]

While I did approve and go through the change, I don't remember exactly how it was done. I'll see if I can pull that up and write something up for you. Thanks for reporting!

[pedantic-git]

It's been a long time but I think it was me that added the DRS rules, although I think only cluster affinity is supported (adding others should be easy).

There are examples of usage in the test file: https://github.com/fog/fog-vsphere/blob/master/tests/models/compute/rules_tests.rb

[Zugschlus]

Hi, @jrgarcia, anything new happening here?
@pedantic-git, I obviously don't have enough VMware knowledge to guess what the example code means :-(

[carlospuga]

I also added code to the DRS rules but for anti-affinity.
It too was a long time ago but the following is an implementation that you can use as a sample.
The add_node.rb calls the drs_rule_manager.rb which leverages the fog-vsphere-1.5.1.gem.
Hope it can help.
https://github.com/oneops/circuit-oneops-1/blob/master/components/cookbooks/vsphere/recipes/add_node.rb
https://github.com/oneops/circuit-oneops-1/blob/master/components/cookbooks/vsphere/libraries/drs_rule_manager.rb

[pedantic-git]

Hi @Zugschlus - it's been a long time, but from the example code I'm pretty sure you can just create a new rule by calling cluster.rules.new and then assign VMs to it:

rule = cluster.rules.new(name: 'affinity-foo', enabled: true, type: RbVmomi::VIM::ClusterAffinityRuleSpec)
rule.vms = [server1, server2] # server objects
rule.save

The RbVmomi::VIM::ClusterAffinityRuleSpec is a rule type constant taken from RbVmomi. If you need something different from affinity you could take a look at the constants in that library.

The cluster is a fog cluster object retrieved by datacenter.clusters.get('ClusterName').