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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Hi,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Approach I am following is not cleaning blindly, there is utility in cleanup which I’ll use<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">To get eligible namespace candidates for cleanup (need to deep dive this logic how effective is that)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Then will extract id from namespace either using namespace manager or l3 agent code,
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">And call on l3 agent to cleanup respective namespaces.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">and to check cleanup, I am creating a router and setting just a gateway which create namespace,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">don’t add any interface, I see it cleans up qrouter-namespace but and I can still see router when I do router-list, which shouldn’t be there, people having knowledge
on this pls correct me if I am wrong ? <o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Thanks and Regards !<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D">Manjeet Singh Bhatia<o:p></o:p></span></p>
<p class="MsoNormal"><a name="_MailEndCompose"><span style="font-size:11.0pt;font-family:"Calibri",sans-serif;color:#1F497D"><o:p> </o:p></span></a></p>
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<p class="MsoNormal"><a name="_____replyseparator"></a><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"> Sergey Belous [mailto:sbelous@mirantis.com]
<br>
<b>Sent:</b> Tuesday, October 11, 2016 3:54 AM<br>
<b>To:</b> OpenStack Development Mailing List (not for usage questions) <openstack-dev@lists.openstack.org><br>
<b>Subject:</b> Re: [openstack-dev] [neutron] proper cleanup of l3 resources (neutron-netns-cleanup)<o:p></o:p></span></p>
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<p class="MsoNormal">Hi, Miguel.<o:p></o:p></p>
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<p class="MsoNormal">As I can see, Manjeet Singh Bhatia already proposed the change on review [1]—this patch adds the invoking a cleanup provided by l3-agent.<br>
Actually, I like the option 2. And I'm going to implement it and compare to Manjeet's solution.<o:p></o:p></p>
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<p class="MsoNormal">But can anybody suggest me, how can I manually reproduce the situation where netns-clean is needed to run for cleanup l3 namespaces? In which state should be these namespaces?<o:p></o:p></p>
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<p class="MsoNormal">[1] <a href="https://review.openstack.org/#/c/383936/">https://review.openstack.org/#/c/383936/</a><o:p></o:p></p>
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<p class="MsoNormal">On 7 Oct 2016, at 15:38, Miguel Angel Ajo Pelayo <<a href="mailto:majopela@redhat.com">majopela@redhat.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal">Hi Sergey!,<br>
<br>
This was my point of view on a possible solution:<br>
<br>
<a href="https://bugs.launchpad.net/neutron/+bug/1403455/comments/12">https://bugs.launchpad.net/neutron/+bug/1403455/comments/12</a><br>
<br>
"""<br>
After much thinking (and quite little doing) I believe the option "2"<br>
I proposed is a rather reasonable one:<br>
<br>
2) Before cleaning a namespace blindly in the end, identify any<br>
network service in the namespace (via netstat), kill those processes,<br>
so they aren't orphaned, and then, kill the namespace.<br>
<br>
Any process should be safely killed that way, and if it's not, we can<br>
complicate our lifes and code with "1":<br>
1) Use stevedore HookManager to let out-of-tree repos register netns<br>
prefixes declaration, and netns cleaners,<br>
so every piece of code (in-tree or out-of-tree) declare which<br>
netns prefixes they use, and provide a netns cleanup<br>
hook to be called.<br>
<br>
"""<br>
<br>
Let me know what you think<br>
<br>
On Fri, Oct 7, 2016 at 2:15 PM, Sergey Belous <<a href="mailto:sbelous@mirantis.com">sbelous@mirantis.com</a>> wrote:<br>
<br>
<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">Hello everyone.<br>
<br>
I’m very interesting in this one<br>
<a href="https://bugs.launchpad.net/neutron/+bug/1403455">https://bugs.launchpad.net/neutron/+bug/1403455</a><br>
Can anybody tell me, what is the current status of this bug? Is anybody<br>
working on it now?<br>
And as I can see, there are some options, that was discussed in comments to<br>
this bug and… did anybody decide which solution is the best?<br>
<br>
<br>
--<br>
Best Regards,<br>
Sergey Belous<br>
<br>
<br>
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<p class="MsoNormal"><span style="color:black">--<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:black">Best Regards,<br>
Sergey Belous<o:p></o:p></span></p>
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