HP Matrix 7.2 KVM Private Cloud Getting Started Guide

Deployed instance does not boot
Apply the recommendations that pertain to your situation.
Possible cause and recommendationSymptom
No VM hosts in active state
1. Navigate to the Hosts screen and ensure that at least one host is in the
Active state.
See “Activate a host” (page 24)
Insufficient resources available on active VM hosts
1. Ensure that you have sufficient cloud resources on the host. On the Hosts
screen, verify the number of hosted VMs, CPU, memory, and storage
usage and compare those values to the resources that will be allocated
to the instance. If sufficient resources are not available:
• Add compute resources to the host.
• Free space on the host by deleting existing cloud instances.
• Verify the physical to virtual oversubscription rates.
See “Calculating the number of VMs that can be provisioned to a host”
(page 20)
NOTE: The Hosts screen displays the percent of resources in use and
the total amount of resources. However, the actual available resources of
a host are calculated by subtracting allocated resources (the virtual
machine instances already provisioned to a host) from the capacity of the
host.
Note the number of hosted virtual machine instances when evaluating
whether resources on a particular host are available, even if the instances
are not consuming all allocated resources or are powered down. If one
or more virtual machine instances in a host are powered down, the host
appears to have a high percentage of free resources, but the available
resources are in fact already allocated to the powered down instances.
You see Unable to create
instance. No available host
can provide the specified
resources
Create image operation is unsuccessful
Apply the recommendations that pertain to your situation.
Possible cause and recommendationSymptom
Oversubscription rates might be incorrect for the load on the
virtual and physical servers
1. Verify the physical to virtual oversubscription rates.
See “Calculating the number of VMs that can be provisioned to a host”
(page 20)
You see an indication that the VM host
capacity has been exceeded
Start instance operation is unsuccessful
Apply the recommendations that pertain to your situation.
Possible cause and recommendationSymptom
The instance might be in Shutoff state
1. Select Actions→Reboot.
You cannot start the instance
42 Troubleshooting