1.Ceilometer监控不能监控虚机内存，社区有BP支持Ceilometer监控虚机内存，libvirt，qemu有版本要求

• libvirt 1.1.1+
• qemu 1.5+
• guest driver that supports memory balloon stats

    https://specs.openstack.org/openstack/ceilometer-specs/specs/kilo/libvirt-memory-utilization-inspector.html

    https://blueprints.launchpad.net/ceilometer/+spec/libvirt-memory-utilization-inspector

2.使用Distributed Alarm提升ceilometer 告警服务的性能及高可用.

    http://blog.csdn.net/hackerain/article/details/38172941

Ceilometer 问题小记