What happens when all virtual machine “slots” are allocated?
The SLAs (Service Level Agreements) implemented by the cloud controller are bare-bones simple. Our intention is for Eucalyptus sites and development teams to come up with their own (we have a few in mind we’d like to try) but in the current release, the simple SLAs supplied enforce no restrictions on occupancy duration. This type of SLA is comparable to the Amazon SLA with the exception that Amazon’s will “time out” when charges to the registered credit card are no longer postable. We have implemented no such time out analogy at present, so if users or the cloud administrator do not terminate running instances, eventually Eucalyptus will run out of VM slots to allocate. In this case, user requests fail and the EC2 tools report no instances available when the command “ec2-describe-availability-zones” is invoked.
Related Questions
- Does the Availability Manager Java GUI depend on a particular Java Virtual Machine (JVM)? What happens if I load a different JVM on my system?
- Do the ILMT agents run continuously? What happens if I increase a virtual machine in the morning and I decrease in the evening?
- What happens when all virtual machine "slots" are allocated?
