This will probably not work for the vmware driver since it does not return a standard uptime string. Here's an example of what you would get:
$ nova hypervisor-uptime 1 +---------------------+--------------------------------------------+ | Property | Value | +---------------------+--------------------------------------------+ | hypervisor_hostname | domain-c7(OpenStackCluster) | | id | 1 | | uptime | Please refer to 10.0.7.1 for the uptime | +---------------------+--------------------------------------------+ On Feb 14, 2014, at 10:29 AM, sahid <[email protected]> wrote: > Greetings, > > I would like to add a new filter based on the load averages. > > This filter will use the command uptime and will provides an option to choice > a > period between 1, 5, and 15 minutes and an option to choice the max load > average (a float between 0 and 1). > > Why: > During a scheduling it could be useful to exclude a host that have a too > heavy load and the command uptime (available in all linux system) > can return a load average of the system in different periods. > > About the implementation: > Currently 'all' drivers (libvirt, xenapi, vmware) supports a method > get_host_uptime that returns the output of the command 'uptime'. We have to > add > in compute/stats.py a new method calculate_loadavg() that returns based on the > output of driver.get_host_uptime() from compute/ressource_tracker.py a well > formatted tuple of load averages for each periods. We also need to update > api/openstack/compute/contrib/hypervisors.py to take care of this new > field. > > The implementation will be divided in several parts: > * Add to host_manager the possibility to get the loads_averages > * Implement the filter based on this new property > * Implement the filter with a per-aggregate configuration > > The blueprint: > https://urldefense.proofpoint.com/v1/url?u=https://blueprints.launchpad.net/nova/%2Bspec/filter-based-uptime&k=oIvRg1%2BdGAgOoM1BIlLLqw%3D%3D%0A&r=2CQc966BQ6s3Cdd6nQ79uvWP17nF9g%2FX4m3XppGg1xQ%3D%0A&m=%2F2SxxIStRB5OioDQormYLfKPx3nAoxbjqTWRezbId4U%3D%0A&s=1c937276a79b45279a009231915f5cac684c565b7b6b1e1cd40c659404f83a03 > > I will be happy to get any comments about this filter, perharps it is not > implemented > yet because of something I didn't see or my thinking of the implementation is > wrong. > > PS: I have checked metrics and cpu_resource but It does not get an averages > of the > system load or perhaps I have not understand all. > > Thanks a lot, > s. > > _______________________________________________ > OpenStack-dev mailing list > [email protected] > https://urldefense.proofpoint.com/v1/url?u=http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev&k=oIvRg1%2BdGAgOoM1BIlLLqw%3D%3D%0A&r=2CQc966BQ6s3Cdd6nQ79uvWP17nF9g%2FX4m3XppGg1xQ%3D%0A&m=%2F2SxxIStRB5OioDQormYLfKPx3nAoxbjqTWRezbId4U%3D%0A&s=78d752c782f43b4e3ae29988f60c7cf1dc743190bddd55e732c73c378fb12e3d
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