shwstppr opened a new issue #5046:
URL: https://github.com/apache/cloudstack/issues/5046
<!--
Verify first that your issue/request is not already reported on GitHub.
Also test if the latest release and master branch are affected too.
Always add information AFTER of these HTML comments, but no need to delete
the comments.
-->
##### ISSUE TYPE
<!-- Pick one below and delete the rest -->
* Improvement Request
##### COMPONENT NAME
<!--
Categorize the issue, e.g. API, VR, VPN, UI, etc.
-->
~~~
VMware
~~~
##### CLOUDSTACK VERSION
<!--
New line separated list of affected versions, commit ID for issues on master
branch.
-->
~~~
4.15.0, master
~~~
##### CONFIGURATION
<!--
Information about the configuration if relevant, e.g. basic network,
advanced networking, etc. N/A otherwise
-->
Advanced zone with vSphere Datacenter, multiple ESXi 6.7 hosts
DRS enabled on the vSphere cluster
##### OS / ENVIRONMENT
<!--
Information about the environment if relevant, N/A otherwise
-->
N/A
##### SUMMARY
<!-- Explain the problem/feature briefly -->
When the vSphere cluster has DRS enabled, VMs created from CloudStack with
anti-affinity rules get migrated to the same host(s) by the VMware. This makes
use of affinity groups useless at CloudStack end when DRS is enabled in VMware.
##### STEPS TO REPRODUCE
<!--
For bugs, show exactly how to reproduce the problem, using a minimal
test-case. Use Screenshots if accurate.
For new features, show how the feature would be used.
-->
<!-- Paste example playbooks or commands between quotes below -->
~~~
1. Enable DRS at VMware end, have sufficient load that it can kick in
2. Create an affinity group with type anti-affinity
3. Deploy multiple VMs using that group
4. Observe VMs getting started on different hosts
5. When DRS kicks in, VMs may get migrated depending on load-balancing
6. CloudStack updates new host for the VM on power sync
~~~
<!-- You can also paste gist.github.com links for larger files -->
##### EXPECTED RESULTS
<!-- What did you expect to happen when running the steps above? -->
~~~
VM remains on different hosts
~~~
##### ACTUAL RESULTS
<!-- What actually happened? -->
<!-- Paste verbatim command output between quotes below -->
~~~
VMs end up on same host(s)
~~~
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
For queries about this service, please contact Infrastructure at:
[email protected]
