In a KVM cluster, CloudStack sees 100% of the compute node's RAM and treats it as allocatable space which eventually leads to OOM killing guests.
There is an agent property named host.reserved.mem.mb which is able to be set in the agent.properties file and passed to the management server. This value is stored as dom0MinMem, however, it appears to be ignored. If we could tweak the host capacity calculation and have it take this into account, I believe that would be ideal. Side note: the variable dom0MinMem is declared as an int and can be overflowed. Suggested change would be make it a long and add a check especially if we are going to make this a configurable parameter. Josh Harshman Cloud Engineer Intrinium Tel: (509) 465-1234 x5259 Fax: (866) 565-4578 Lync / Skype: josh.harsh...@intrinium.com Web: http://intrinium.com<http://intrinium.com/> [Intrinium Long Sig Logo]<http://intrinium.com/> [Facebook]<http://www.facebook.com/pages/intrinium/154891544582822> [Twitter] <http://twitter.com/intrinium> [Linkedin] <http://www.linkedin.com/company/intrinium_networks_it_security?trk=fc_badge> [Youtube] <http://www.youtube.com/user/intrinium> [Blog] <http://intrinium.com/blog/> Information Security and Compliance Consulting | Managed IT and Security Services | Cloud Services ________________________________ This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This message contains confidential information and is intended only for the individual named. If you are not the named addressee you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately by e-mail if you have received this e-mail by mistake and delete this e-mail from your system. If you are not the intended recipient you are notified that disclosing, copying, distributing or taking any action in reliance on the contents of this information is strictly prohibited.
