<html><body><div style="color:#000; background-color:#fff; font-family:Helvetica Neue-Light, Helvetica Neue Light, Helvetica Neue, Helvetica, Arial, Lucida Grande, Sans-Serif;font-size:16px"><div>Hi All, <br></div><div id="yui_3_16_0_1_1418216719429_2687"><br></div><div dir="ltr" id="yui_3_16_0_1_1418216719429_2688">Please recommend which stable Host OS to use for Controller and Compute node.</div><div id="yui_3_16_0_1_1418216719429_2690" dir="ltr">I have tried Fedora20 seems lot of tweaking is required, corerct me If I am wrong. <br></div><div id="yui_3_16_0_1_1418216719429_2691" dir="ltr">I see that most of it is tested on ubuntu and centos. <br></div><div id="yui_3_16_0_1_1418216719429_2692" dir="ltr">I am planning to use JUNO stable version. <br></div><div id="yui_3_16_0_1_1418216719429_2693" dir="ltr">Please help on this<br></div><div id="yui_3_16_0_1_1418216719429_2686"><span></span></div><div id="yui_3_16_0_1_1418216719429_2694"> </div><div><div>
<br>Regards
<br>Neelu</div></div> <div class="qtdSeparateBR"><br><br></div><div style="display: block;" class="yahoo_quoted"> <div style="font-family: Helvetica Neue-Light, Helvetica Neue Light, Helvetica Neue, Helvetica, Arial, Lucida Grande, Sans-Serif; font-size: 16px;"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, Sans-Serif; font-size: 12px;"> <div dir="ltr"> <font face="Arial" size="2"> On Wednesday, 10 December 2014 5:42 PM, Hannah Fordham <hfordham@radiantworlds.com> wrote:<br> </font> </div> <br><br> <div class="y_msg_container"><div id="yiv9566119554"><div>I'm afraid we didn't, we're still struggling with some VMs with this problem. Sorry!<br clear="none"><br clear="none"><div class="yiv9566119554gmail_quote">On 9 December 2014 14:09:32 GMT+00:00, "André Aranha" <andre.f.aranha@gmail.com> wrote:<blockquote class="yiv9566119554gmail_quote" style="margin:0pt 0pt 0pt 0.8ex;border-left:1px solid rgb(204, 204, 204);padding-left:1ex;">
<div dir="ltr">Hi,<div><br clear="none"></div><div>We are with the same issue here, and already try some solutions that didn't work at all. Did you solved this problem?</div><div><br clear="none"></div><div>Thank you,</div><div>Andre Aranha</div></div><div class="yiv9566119554gmail_extra"><br clear="none"><div class="yiv9566119554gmail_quote">On 27 August 2014 at 08:17, Hannah Fordham <span dir="ltr"><<a rel="nofollow" shape="rect" ymailto="mailto:hfordham@radiantworlds.com" target="_blank" href="mailto:hfordham@radiantworlds.com">hfordham@radiantworlds.com</a>></span> wrote:<br clear="none"><blockquote class="yiv9566119554gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><div lang="EN-GB"><div><div class="yiv9566119554MsoNormal">I’ve been trying to figure this one out for a while, so I’ll try and be as thorough as possible in this post but apologies if I miss anything pertinent out.<u></u><u></u></div><div class="yiv9566119554MsoNormal"><u></u> <u></u></div><div class="yiv9566119554MsoNormal">First off, I’m running a set up with one control node and 5 compute nodes, all created using the Stackgeek scripts
- <a rel="nofollow" shape="rect" target="_blank" href="http://www.stackgeek.com/guides/gettingstarted.html">http://www.stackgeek.com/guides/gettingstarted.html</a>. The first two (compute1 and compute 2) were created at the same time, compute3, 4 and 5 were added as needed later. My VMs are predominantly CentOS, while my Openstack nodes are Ubuntu 14.04.1<u></u><u></u></div><div class="yiv9566119554MsoNormal"><u></u> <u></u></div><div class="yiv9566119554MsoNormal"><b>The symptom: </b>irregular high latency/packet loss to VMs on all compute boxes except compute3. Mostly a pain when trying to do anything via ssh on a VM because the lag makes it difficult to do anything, but it shows itself quite nicely through pings as well:<u></u><u></u></div><div class="yiv9566119554MsoNormal">--- 10.0.102.47 ping statistics ---<u></u><u></u></div><div class="yiv9566119554MsoNormal">111 packets transmitted, 103 received, 7% packet loss, time 110024ms<u></u><u></u></div><div class="yiv9566119554MsoNormal">rtt min/avg/max/mdev = 0.096/367.220/5593.100/1146.920 ms, pipe 6<u></u><u></u></div><div class="yiv9566119554MsoNormal"><u></u> <u></u></div><div class="yiv9566119554MsoNormal"><br clear="none"><b>I have tested these pings:<u></u><u></u></b></div><div class="yiv9566119554MsoNormal">VM to itself (via its external IP) seems fine<u></u><u></u></div><div class="yiv9566119554MsoNormal">VM to another VM is not fine<u></u><u></u></div><div class="yiv9566119554MsoNormal">Hosting compute node to VM is not fine<u></u><u></u></div><div class="yiv9566119554MsoNormal">My PC to VM is not fine (however the other way round works fine)<u></u><u></u></div><div class="yiv9566119554MsoNormal"><u></u> <u></u></div><div class="yiv9566119554MsoNormal"><u></u> <u></u></div><div class="yiv9566119554MsoNormal"><b>Top on a (32 core) compute node with laggy VMs:<u></u><u></u></b></div><div class="yiv9566119554MsoNormal">top - 12:09:20 up 33 days, 21:35, 1 user, load average: 2.37, 4.95, 6.23<u></u><u></u></div><div class="yiv9566119554MsoNormal">Tasks: 431 total, 2 running, 429 sleeping, 0 stopped, 0 zombie<u></u><u></u></div><div class="yiv9566119554MsoNormal">%Cpu(s): 0.6 us, 3.4 sy, 0.0 ni, 96.0 id, 0.0 wa, 0.0 hi, 0.0 si, 0.0 st<u></u><u></u></div><div class="yiv9566119554MsoNormal">KiB Mem: 65928256 total, 44210348 used, 21717908 free, 341172 buffers<u></u><u></u></div><div class="yiv9566119554MsoNormal">KiB Swap: 7812092 total, 1887864 used, 5924228 free. 7134740 cached Mem<u></u><u></u></div><div class="yiv9566119554MsoNormal"><u></u> <u></u></div><div class="yiv9566119554MsoNormal"><b>And for comparison, on the one compute node that doesn’t seem to be suffering from this:<u></u><u></u></b></div><div class="yiv9566119554MsoNormal">top - 12:12:20 up 33 days, 21:38, 1 user, load average: 0.28, 0.18, 0.15<u></u><u></u></div><div class="yiv9566119554MsoNormal">Tasks: 399 total, 3 running, 396 sleeping, 0 stopped, 0 zombie<u></u><u></u></div><div class="yiv9566119554MsoNormal">%Cpu(s): 0.3 us, 0.1 sy, 0.0 ni, 98.9 id, 0.6 wa, 0.0 hi, 0.0 si, 0.0 st<u></u><u></u></div><div class="yiv9566119554MsoNormal">KiB Mem: 65928256 total, 49986064 used, 15942192 free, 335788 buffers<u></u><u></u></div><div class="yiv9566119554MsoNormal">KiB Swap: 7812092 total, 919392 used, 6892700 free. 39272312 cached Mem<u></u><u></u></div><div class="yiv9566119554MsoNormal"><u></u> <u></u></div><div class="yiv9566119554MsoNormal"><b>Top on a laggy VM:<u></u><u></u></b></div><div class="yiv9566119554MsoNormal">top - 11:02:53 up 27 days, 33 min, 3 users, load average: 0.00, 0.00, 0.00<u></u><u></u></div><div class="yiv9566119554MsoNormal">Tasks: 91 total, 1 running, 90 sleeping, 0 stopped, 0 zombie<u></u><u></u></div><div class="yiv9566119554MsoNormal">Cpu(s): 0.2%us, 0.1%sy, 0.0%ni, 99.5%id, 0.1%wa, 0.0%hi, 0.0%si, 0.0%st<u></u><u></u></div><div class="yiv9566119554MsoNormal">Mem: 1020400k total, 881004k used, 139396k free, 162632k buffers<u></u><u></u></div><div class="yiv9566119554MsoNormal">Swap: 1835000k total, 14984k used, 1820016k free, 220644k cached<u></u><u></u></div><div class="yiv9566119554MsoNormal"><u></u> <u></u></div><div class="yiv9566119554MsoNormal"><a rel="nofollow" shape="rect" target="_blank" href="http://imgur.com/blULjDa">http://imgur.com/blULjDa</a> shows the hypervisor panel of Horizon. As you can see, Compute 3 has fewer resources used, but none of the compute nodes should be anywhere near overloaded from
what I can tell.<u></u><u></u></div><div class="yiv9566119554MsoNormal"><u></u> <u></u></div><div class="yiv9566119554MsoNormal">Any ideas? Let me know if I’m missing anything obvious that would help with figuring this out! <u></u><u></u></div><div class="yiv9566119554MsoNormal"><u></u> <u></u></div><div class="yiv9566119554MsoNormal">Hannah<u></u><u></u></div><div class="yiv9566119554MsoNormal"><u></u> <u></u></div><div class="yiv9566119554MsoNormal"><u></u> <u></u></div><div class="yiv9566119554MsoNormal"><u></u> <u></u></div><div class="yiv9566119554MsoNormal"><u></u> <u></u></div></div><br clear="none">
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