<html><head><meta http-equiv="Content-Type" content="text/html charset=iso-8859-1"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">I was about to reply, but Anne covered it up perfectly :) (as usual)<div><br><div apple-content-edited="true">
<span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: 'Lucida Grande'; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><span class="Apple-style-span" style="font-family: Helvetica; "><span class="Apple-style-span" style="font-family: Helvetica; "><b style="color: rgb(19, 112, 138); ">Nuage & Co - Razique Mahroua</b></span><span class="Apple-style-span" style="color: rgb(19, 112, 138); font-family: Helvetica; "><b> </b></span><span class="Apple-style-span" style="border-collapse: separate; font-family: Helvetica; font-style: normal; font-variant: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><span class="Apple-style-span" style="border-collapse: separate; font-variant: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><span class="Apple-style-span" style="border-collapse: separate; font-variant: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; "><div style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: medium; font-weight: normal; font-style: normal; "><font class="Apple-style-span" color="#13708a"><a href="mailto:razique.mahroua@gmail.com">razique.mahroua@gmail.com</a></font></div></span><br class="Apple-interchange-newline"><span></span><span style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: medium; font-weight: normal; font-style: normal; "></span><span style="color: rgb(0, 0, 0); font-weight: normal; "></span></span><span><img height="125" width="125" id="3b00ee81-3845-4840-98ca-4a00066b4017" apple-width="yes" apple-height="yes" src="cid:00E07450-433E-43E6-9005-48B8FD5C669F@la.fabrique"></span>
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<br><div><div>Le 15 nov. 2012 à 20:49, Anne Gentle <<a href="mailto:anne@openstack.org">anne@openstack.org</a>> a écrit :</div><br class="Apple-interchange-newline"><blockquote type="cite">On Thu, Nov 15, 2012 at 1:40 PM, Ahmed Al-Mehdi <<a href="mailto:ahmed@coraid.com">ahmed@coraid.com</a>> wrote:<br><blockquote type="cite">Is your statement based on the setup noted in the "OpenStack Install and<br>Deploy Manual"? I am question was more specific to the setup covered in<br>the afore mentioned document.<br></blockquote><br>Specific to that guide, the controller node also contains<br>nova-compute. Any node with that service (nova-compute) can act as a<br>Compute node and launch VMs.<br><br>This all-services-on-one-node setup on the controller node is not a<br>typical deployment for large-scale clouds (public or private).<br><br><blockquote type="cite">In general, does the answer not depend on what services are installed on the<br>controller node, to give it "ability" to be a compute node also?<br></blockquote><br>The services installed do define its abilities, yes. Often a<br>"Controller node" contains items like databases (such as MySQL),<br>messaging queues (such as Rabbit-MQ), identity, images, all<br>nova-services minus nova-compute, volumes, and the dashboard. Often a<br>"Compute node" offers the hypervisor, nova-compute, the API metadata<br>service (nova-api-metadata) and possibly the networking services,<br>either nova-network or Quantum.<br><br>You could also review the "Basic install guide" at<br><a href="https://review.openstack.org/#/c/16096/">https://review.openstack.org/#/c/16096/</a> which outlines it quite<br>prescriptively.<br><br>In your environment you may have reasons for splitting out services<br>differently, how that division is done depends on your use case. The<br>"Controller" and "Compute" nodes are an easy nomenclature and pattern<br>for many cases.<br><br>Hope this helps,<br>Anne<br><br><blockquote type="cite">Regards,<br>Ahmed.<br><br><br>From: Pengjun Pan <<a href="mailto:panpengjun@gmail.com">panpengjun@gmail.com</a>><br>Date: Thursday, November 15, 2012 11:58 AM<br>To: Ahmed Al-Mehdi <<a href="mailto:ahmed@coraid.com">ahmed@coraid.com</a>><br>Cc: "<a href="mailto:openstack@lists.launchpad.net">openstack@lists.launchpad.net</a>" <<a href="mailto:openstack@lists.launchpad.net">openstack@lists.launchpad.net</a>><br>Subject: Re: [Openstack] Controller node vs. compute node terminology<br><br>The controller node can not host vms. But an All-in-one node can, because it<br>is a combination of controller and compute.<br><br><br>On Thu, Nov 15, 2012 at 12:53 PM, Ahmed Al-Mehdi <<a href="mailto:ahmed@coraid.com">ahmed@coraid.com</a>> wrote:<br><blockquote type="cite"><br>Hello,<br><br>I am following the document "OpenStack Deploy and Install Guide" to bring<br>up a OpenStack setup. Per the instructions in the document, is the<br>controller node also acting as the compute node. By that I mean when a VM<br>is created, it created on the controller node. Is that right? And then<br>there are steps to create additional (sole) compute nodes. Is that a<br>correct view of looking at the setup described in the document.<br><br>Server 1 : Controller node / Compute node<br>Server 2: Compute node<br><br>If so, is that the usual deployment scenario?<br><br>Any thoughts would be highly appreciated.<br><br>Regards,<br>Ahmed.<br><br><br>_______________________________________________<br>Mailing list: <a href="https://launchpad.net/~openstack">https://launchpad.net/~openstack</a><br>Post to : <a href="mailto:openstack@lists.launchpad.net">openstack@lists.launchpad.net</a><br>Unsubscribe : <a href="https://launchpad.net/~openstack">https://launchpad.net/~openstack</a><br>More help : <a href="https://help.launchpad.net/ListHelp">https://help.launchpad.net/ListHelp</a><br><br></blockquote><br><br>_______________________________________________<br>Mailing list: <a href="https://launchpad.net/~openstack">https://launchpad.net/~openstack</a><br>Post to : <a href="mailto:openstack@lists.launchpad.net">openstack@lists.launchpad.net</a><br>Unsubscribe : <a href="https://launchpad.net/~openstack">https://launchpad.net/~openstack</a><br>More help : <a href="https://help.launchpad.net/ListHelp">https://help.launchpad.net/ListHelp</a><br><br></blockquote><br>_______________________________________________<br>Mailing list: <a href="https://launchpad.net/~openstack">https://launchpad.net/~openstack</a><br>Post to : <a href="mailto:openstack@lists.launchpad.net">openstack@lists.launchpad.net</a><br>Unsubscribe : <a href="https://launchpad.net/~openstack">https://launchpad.net/~openstack</a><br>More help : <a href="https://help.launchpad.net/ListHelp">https://help.launchpad.net/ListHelp</a><br></blockquote></div><br></div></body></html>