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<p class="MsoNormal" style="margin-left:36.0pt"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif"">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif""> ext Tim Bell [mailto:Tim.Bell@cern.ch]
<br>
<b>Sent:</b> Tuesday, January 07, 2014 8:22 AM<br>
<b>To:</b> OpenStack Development Mailing List (not for usage questions)<br>
<b>Subject:</b> Re: [openstack-dev] [Ceilometer] Dynamic Meters in Ceilometer<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-GB" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-GB" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Thinking using inotify/configuration file changes to implement dynamic meters, this would be limited to administrators
of ceilometer itself (i.e. with write access to the file) rather than the project administrators (as defined by keystone roles). Thus, as a project administrator who is not the cloud admin, I could not enable/disable the meter for a project only.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-GB" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-GB" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">It would mean that scripting meter on/off would not be possible if there was not an API to perform this.<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-GB" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-GB" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Not sure if these requirements are significant and the associated impact on implementation complexity, but they may
be relevant in scoping out the blueprint and subsequent changes<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-GB" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-GB" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Tim<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Tim,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Agree with your suggestion. I have updated the design by adding APIs. Whenever an API request is received by the ceilometer-api, it shall modify
the config file and inform the ceilometer agents.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">You can find detailed information at<o:p></o:p></span></p>
<p class="MsoNormal"><a href="https://etherpad.openstack.org/p/dynamic-meters">https://etherpad.openstack.org/p/dynamic-meters</a><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-GB" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">Regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-GB" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D">VijayKumar<o:p></o:p></span></p>
<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-GB" style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif"">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri","sans-serif""> Doug Hellmann [<a href="mailto:doug.hellmann@dreamhost.com">mailto:doug.hellmann@dreamhost.com</a>]
<br>
<b>Sent:</b> 06 January 2014 23:35<br>
<b>To:</b> OpenStack Development Mailing List (not for usage questions)<br>
<b>Subject:</b> Re: [openstack-dev] [Ceilometer] Dynamic Meters in Ceilometer<o:p></o:p></span></p>
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<span lang="EN-GB"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-GB">On Tue, Dec 31, 2013 at 4:53 AM, Kodam, Vijayakumar (EXT-Tata Consultancy Ser - FI/Espoo) <<a href="mailto:vijayakumar.kodam.ext@nsn.com" target="_blank">vijayakumar.kodam.ext@nsn.com</a>> wrote:<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-GB" style="font-size:11.0pt;font-family:"Calibri","sans-serif"">Hi,<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-GB" style="font-size:11.0pt;font-family:"Calibri","sans-serif""> <o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-GB" style="font-size:11.0pt;font-family:"Calibri","sans-serif"">Currently there is no way to enable or disable meters without restarting ceilometer.
<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-GB" style="font-size:11.0pt;font-family:"Calibri","sans-serif""> <o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-GB" style="font-size:11.0pt;font-family:"Calibri","sans-serif"">There are cases where operators do not want to run all the meters continuously.
<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-GB" style="font-size:11.0pt;font-family:"Calibri","sans-serif"">In these cases, there should be a way to disable or enable them dynamically.<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-GB" style="font-size:11.0pt;font-family:"Calibri","sans-serif""> <o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-GB" style="font-size:11.0pt;font-family:"Calibri","sans-serif"">We are working on this feature right now. I have also created a blueprint for the same.
<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-GB" style="font-size:11.0pt;font-family:"Calibri","sans-serif""><a href="https://blueprints.launchpad.net/ceilometer/+spec/dynamic-meters" target="_blank">https://blueprints.launchpad.net/ceilometer/+spec/dynamic-meters</a><o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-GB" style="font-size:11.0pt;font-family:"Calibri","sans-serif""> <o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-GB" style="font-size:11.0pt;font-family:"Calibri","sans-serif"">We would love to hear your views on this feature.<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-GB"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-GB">There isn't much detail in the blueprint. Do you have a more comprehensive document you can link to that talks about how you intend for it to work?<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-GB">Doug<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-GB"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-GB"> <o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-GB" style="font-size:11.0pt;font-family:"Calibri","sans-serif""> <o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-GB" style="font-size:11.0pt;font-family:"Calibri","sans-serif"">Regards,<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-GB" style="font-size:11.0pt;font-family:"Calibri","sans-serif"">VijayKumar Kodam<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-GB" style="font-size:11.0pt;font-family:"Calibri","sans-serif""> <o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-GB" style="font-size:11.0pt;font-family:"Calibri","sans-serif""> <o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-left:36.0pt"><span lang="EN-GB" style="font-size:11.0pt;font-family:"Calibri","sans-serif""> <o:p></o:p></span></p>
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<span lang="EN-GB"><br>
_______________________________________________<br>
OpenStack-dev mailing list<br>
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<a href="http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev" target="_blank">http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev</a><o:p></o:p></span></p>
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