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No. of CPU Cores in Compute Cluster doesnt display correctly when Cluster has oversubscription more than 1 #9693
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@btzq |
@weizhouapache i see, is this expected? And if it doesnt take overprovisioning into account, does this mean the global settings will not work as intended for clusters with overprovisioning?
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@btzq |
@weizhouapache Does this mean that:
Only triggers if the 'CPU' Field (Not # of CPU Cores) exceed the threshold? But not all CPUs are 2,000Mhz. AMD 9554 is 3.1Ghz. And in the scenario of a mix cluster, it becomes even more complicated? And when a node fails, how does cloudstack determine which remaining nodes the VM should failover to? |
all operations are based on "CPU". the |
@weizhouapache I went through this explanation: In this case, would it make sense for us to set 1.0Ghz all CPU? This would mean all instance have the same share. That way, the 'CPU' field will display the same value as the number of core allocated and remaining. We just have to make sure that 'CPU Cap' in the Compute Offering is disabled? That way, the number of remaining CPU is the same as the # of Cores left, and there will be no change to the guest VM performances? |
Yes, I think so.
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ISSUE TYPE
COMPONENT NAME
CLOUDSTACK VERSION
CONFIGURATION
OS / ENVIRONMENT
SUMMARY
We have 2 Compute Clusters:
Refering to the screenshot below, Cluster 1 is showing the correct No. of CPU Cores allocated.
But for Cluster 2, it seems inaccurate. The number of allocation exceeded whats available. Resulting in a UI error.
But the bigger problem now, is that both clusters have exceeded the allocation threshold, but there was no notification sent. And neither did cloudstack stop users from creating new virtual machines from the clusters.
Without this, Admins would not be able to ensure n+1 sufficient capacity in the event of a node failure.
In summary, there are 3 Issues:
STEPS TO REPRODUCE
EXPECTED RESULTS
ACTUAL RESULTS
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