A Blog of the ZHAW Zurich University of Applied Sciences
Since our servers have been set up for live migration with Openstack Icehouse, we wondered how live migration would perform. We measured the duration of the migration process, VM downtime duration and the amount of data transfered via the ethernet during a live migration. All tests were performed across 5 different VM flavors to examine the impact […]
[Update 8.12.2014] Since OpenStack’s Juno release hasn’t introduced any changes regarding live migration, Juno users should be able to follow this tutorial as well as the Icehouse users. If you experience any issues let us know. The same setup can be used for newer versions of QEMU and Libvirt as well. Currently we are using QEMU 2.1.5 […]
In one of our earlier blog posts, we described some test we performed to determine how server power consumption increases with compute load; this post is something of a variation on that post, but here we put the focus on work taking place within VMs rather than work taking place within the host OS. The […]
In some of our projects we need to understand the energy consumption of our servers in an Openstack cluster. The first step in this process was to collect energy consumption data from our IBM servers; we stored this in Ceilometer for further study. In this blog post we will cover how we do this. First, […]
We are using ceilometer to collect data energy from our servers. As noted previously we were having some performance issues and we needed to investigate further. In this blog post we will cover our approach to performing profiling on ceilometer API to determine where the problems arose. Of course, the first step was to take […]
We are changing our ceilometer backend from mysql to mongodb in one of our experimental Openstack installations. The reason for this change is that mongo seems to deliver better ceilometer performance than mysql; further ceilometer data structures are a more natural fit with mongo (and indeed, this is largely where they came from). This can […]
Introduction The Ceilometer project is a core OpenStack service that provide collection of metering data on managed virtual resources (e.g. compute, storage, networking). Before it was only possible to collect data from OpenStack virtual resources which are running upon an OpenStack deployment. The work presented hereafter addresses this issue outlines a means to monitor both virtual […]
From “Icehouse” release on Openstack has been added monitoring physical devices. At this moment available only one inspector – SNMP Inspector. IPMI Inspector will be add soon. Schlagwörter: Ceilometer, CodeContribution, openstack, Tutorial
The release of Icehouse brought a few enhancements that were of particular interest in our work – notably Ceilometer/Telemetry developments both in terms of data models as well as performance and improved support for live VM migration. As we had a positive experience with installing Openstack using Mirantis Openstack 4.x (based on Fuel 4.x), we thought […]
Update: This does not apply to Icehouse. This flag was to activate an experimental feature -this option no longer exists in Icehouse. (It is in Havana, however). There have been some criticisms of the implementation of Ceilometer (or Telemetry as of Icehouse) – however, it’s still the main show in town for understanding what’s going […]