thanks gong and sandy for your brief and clear explanation. really helps<br><div class="gmail_extra"><br clear="all">-----------------------------------------------------------------<br>韦远科 <div>中国科学院 计算机网络信息中心</div><div>
北京市海淀区中关村南四街四号 349信箱(100190)</div><div style="text-align:-webkit-left"><font color="#4b4b4b" face="����"><span style="font-size:14px;line-height:24px"><br></span></font></div><div>Yuanke Wei (Wei)</div><div>Computer Network Information Center,Chinese Academy of Sciences</div>
<div>4 Zhongguancun Nansijie, Haidian District, Beijing 100190, China</div><div>P.O. Box 349</div><div>gtalk: <a href="mailto:weiyuanke123@gmail.com" target="_blank">weiyuanke123@gmail.com</a></div><div><div>msn: <a href="mailto:weiyuanke123@hotmail.com" target="_blank">weiyuanke123@hotmail.com</a></div>
</div><br>
<br><br><div class="gmail_quote">On Tue, Oct 30, 2012 at 7:43 PM, gong yong sheng <span dir="ltr"><<a href="mailto:gongysh@linux.vnet.ibm.com" target="_blank">gongysh@linux.vnet.ibm.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div text="#000000" bgcolor="#FFFFFF">
<div>Following is my understanding:<br>
usage:<br>
scheduler queue is used for compute api server. For example of
nova boot, API server will send a msg to scheduler queue for a
booting<br>
scheduler_<b style="font-family:Verdana,sans-serif;font-weight:normal"><font>fanout_xxxx
is used for service<b>s to report service capability. For
example, nova compute </b></font></b>will use
scheduler_fanout to publish its capabilities.<br>
<br>
scheduler.{hostname} seemingly is not used now.<br>
we can deploy many schedulers into a Openstack cloud. All the
schedulers will listen on scheduler msg queue. AMQP server
(rabbitmq) will adopt round robin way to <br>
dispatch the msg to these schedulers. But since the capabilities
are fan outed, all the schedulers can receive these capabilities.<div><div class="h5"><br>
<br>
On 10/30/2012 06:55 PM, 韦远科 wrote:<br>
</div></div></div>
<blockquote type="cite"><div><div class="h5">
<div>hi all,</div>
<div><br>
</div>
<div>I read into the source code for nova-scheduler and found
there actually exists three msg queues, like</div>
<div>"scheduler"</div>
<div>"scheduler.node70"</div>
<div>"scheduler_<b style="font-family:Verdana,sans-serif;font-weight:normal"><font>fanout_bd738fedcdf344d9bb3cb580657f54e0</font></b>".</div>
<div><br>
</div>
<div>what's the functions for each queue and are there
connections??</div>
<div><br>
</div>
<div><br>
</div>
<div>thanks,</div>
<div><br>
</div>
<div><br>
</div>
<div><br>
</div>
<br>
<br>
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</div></div><pre>_______________________________________________
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