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<p class="MsoNormal"><span style="color:#1F497D">In principle I like the idea and concept, a lot. In practice I don’t think glance code is ready in a state that we could say SIGHUP reloads our configs. Even more my concern is that based on the behavior seen
some config options gets picked up and some does not.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">As long as we do not have definite list documented what options gets updated on the fly and what is the actual behavior at the point when new config is picked up (lets say we have some locks in place and locking
folder gets updated, what happens?) I don’t think we should be taking this functionality in. Even the current behavior is fundamentally broken, at least it’s broken in a way that it is consistent and the behavior is known.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l1 level1 lfo3"><![if !supportLists]><span style="color:#1F497D"><span style="mso-list:Ignore">-<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span style="color:#1F497D">Erno (jokke_) Kuvaja<o:p></o:p></span></p>
<p class="MsoListParagraph"><span style="color:#1F497D">kuvaja@hp.com<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b>From:</b> Kekane, Abhishek [mailto:Abhishek.Kekane@nttdata.com]
<br>
<b>Sent:</b> 03 September 2014 14:39<br>
<b>To:</b> OpenStack Development Mailing List (not for usage questions)<br>
<b>Subject:</b> Re: [openstack-dev] [glance][feature freeze exception] Proposal for using Launcher/ProcessLauncher for launching services<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span lang="EN-IN" style="color:black">Hi All,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-IN" style="color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-IN" style="color:black">Please give your support me for applying the freeze exception for using oslo-incubator service framework in glance, based on the following blueprint:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-IN"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-IN"><a href="https://blueprints.launchpad.net/glance/+spec/use-common-service-framework">https://blueprints.launchpad.net/glance/+spec/use-common-service-framework</a><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-IN"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-IN">I have ensured that after making these changes everything is working smoothly.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-IN"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-IN" style="color:black">I have done the functional testing for following three scenarios:<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo2"><![if !supportLists]><span lang="EN-IN" style="color:black"><span style="mso-list:Ignore">1.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-IN" style="color:black">Enabled SSL and checked requests are processed by the Api service before and after SIGHUP signal<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo2"><![if !supportLists]><span lang="EN-IN" style="color:black"><span style="mso-list:Ignore">2.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-IN" style="color:black">Disabled SSL and checked requests are processed by the Api service before and after SIGHUP signal<o:p></o:p></span></p>
<p class="MsoListParagraph" style="text-indent:-18.0pt;mso-list:l0 level1 lfo2"><![if !supportLists]><span lang="EN-IN" style="color:black"><span style="mso-list:Ignore">3.<span style="font:7.0pt "Times New Roman"">
</span></span></span><![endif]><span lang="EN-IN" style="color:black">I have also ensured reloading of the parameters like ilesystem_store_datadir, filesystem_store_datadirs are working effectively after sending the SIGHUP signal.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-IN" style="color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-IN" style="color:black">To test 1<sup>st</sup> and 2<sup>nd</sup> I have created a python script which will send multiple requests to glance at a time and added a chron job to send a SIGHUP signal to the parent process.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-IN" style="color:black">I have tested above script for 1 hour and confirmed every request has been processed successfully.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-IN" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-IN" style="color:black">Please consider this feature to be a part of Juno release.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-IN" style="color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-IN" style="color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-IN" style="color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-IN" style="color:black">Thanks & Regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-IN" style="color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-IN" style="color:black">Abhishek Kekane<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-IN" style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-IN" style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";mso-fareast-language:EN-IN">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";mso-fareast-language:EN-IN"> Kekane, Abhishek [<a href="mailto:Abhishek.Kekane@nttdata.com">mailto:Abhishek.Kekane@nttdata.com</a>]
<br>
<b>Sent:</b> 02 September 2014 19:11<br>
<b>To:</b> OpenStack Development Mailing List (<a href="mailto:openstack-dev@lists.openstack.org">openstack-dev@lists.openstack.org</a>)<br>
<b>Subject:</b> [openstack-dev] [glance][feature freeze exception] Proposal for using Launcher/ProcessLauncher for launching services<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-IN"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-IN">Hi All,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-IN"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-IN">I'd like to ask for a feature freeze exception for using oslo-incubator service framework in glance, based on the following blueprint:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-IN"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-IN"><a href="https://blueprints.launchpad.net/glance/+spec/use-common-service-framework">https://blueprints.launchpad.net/glance/+spec/use-common-service-framework</a><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-IN"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-IN"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-IN">The code to implement this feature is under review at present.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-IN"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-IN">1. Sync oslo-incubator service module in glance:
<a href="https://review.openstack.org/#/c/117135/2">https://review.openstack.org/#/c/117135/2</a><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-IN">2. Use Launcher/ProcessLauncher in glance:
<a href="https://review.openstack.org/#/c/117988/">https://review.openstack.org/#/c/117988/</a><o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-IN"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-IN"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-IN">If we have this feature in glance then we can able to use features like reload glance configuration file without restart, graceful shutdown etc.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-IN">Also it will use common code like other OpenStack projects nova, keystone, cinder does.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-IN"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-IN"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-IN">We are ready to address all the concerns of the community if they have any.<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-IN"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-IN"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-IN">Thanks & Regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-IN"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-IN">Abhishek Kekane<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-IN" style="font-size:12.0pt;font-family:"Times New Roman","serif";mso-fareast-language:EN-IN"><br>
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