Merge "Improved network interface configuration"

doc/install-guide/figures/installguide_arch-neutron.svg

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doc/install-guide/figures/installguide_arch-nova.svg

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doc/install-guide/section_basics-networking-neutron.xml

@@ -13,6 +13,14 @@
     <glossterm>external network</glossterm>. The compute node contains
     one network interface on the management network and one on the
     instance tunnels network.</para>
+  <note>
+    <para>Network interface names vary by distribution. Traditionally,
+      interfaces use "eth" followed by a sequential number. To cover all
+      variations, this guide simply refers to the first interface as the
+      interface with the lowest number, the second interface as the
+      interface with the middle number, and the third interface as the
+      interface with the highest number.</para>
+  </note>
   <figure>
     <title>Three-node architecture with OpenStack Networking (neutron)</title>
     <mediaobject>
@@ -39,7 +47,7 @@
     <procedure>
       <title>To configure networking:</title>
       <step>
-        <para>Configure the management interface:</para>
+        <para>Configure the first interface as the management interface:</para>
         <para>IP address: 10.0.0.11</para>
         <para>Network mask: 255.255.255.0 (or /24)</para>
         <para>Default gateway: 10.0.0.1</para>
@@ -70,43 +78,48 @@
     <procedure>
       <title>To configure networking:</title>
       <step>
-        <para>Configure the management interface:</para>
+        <para>Configure the first interface as the management interface:</para>
         <para>IP address: 10.0.0.21</para>
         <para>Network mask: 255.255.255.0 (or /24)</para>
         <para>Default gateway: 10.0.0.1</para>
       </step>
       <step>
-        <para>Configure the instance tunnels interface:</para>
+        <para>Configure the second interface as the instance tunnels
+          interface:</para>
         <para>IP address: 10.0.1.21</para>
         <para>Network mask: 255.255.255.0 (or /24)</para>
       </step>
       <step>
         <para>The external interface uses a special configuration without an
-          IP address assigned to it. Configure the external interface:</para>
+          IP address assigned to it. Configure the third interface as the
+          external interface:</para>
+        <para>Replace <replaceable>INTERFACE_NAME</replaceable> with the
+          actual interface name. For example, <emphasis>eth2</emphasis> or
+          <emphasis>ens256</emphasis>.</para>
         <substeps>
           <step os="ubuntu;debian">
             <para>Edit the <filename>/etc/network/interfaces</filename> file
               to contain the following:</para>
             <programlisting># The external network interface
-auto eth2
+auto <replaceable>INTERFACE_NAME</replaceable>
-iface eth2 inet manual
+iface <replaceable>INTERFACE_NAME</replaceable> inet manual
         up ip link set dev $IFACE up
         down ip link set dev $IFACE down</programlisting>
           </step>
           <step os="rhel;centos;fedora">
             <para>Edit the
-              <filename>/etc/sysconfig/network-scripts/ifcfg-eth2</filename>
+              <filename>/etc/sysconfig/network-scripts/ifcfg-<replaceable>INTERFACE_NAME</replaceable></filename>
               file to contain the following:</para>
             <para>Do not change the <literal>HWADDR</literal> and
               <literal>UUID</literal> keys.</para>
-            <programlisting>DEVICE=eth2
+            <programlisting>DEVICE=<replaceable>INTERFACE_NAME</replaceable>
 TYPE=Ethernet
 ONBOOT="yes"
 BOOTPROTO="none"</programlisting>
           </step>
           <step os="sles;opensuse">
             <para>Edit the
-              <filename>/etc/sysconfig/network/ifcfg-eth2</filename> file to
+              <filename>/etc/sysconfig/network/ifcfg-<replaceable>INTERFACE_NAME</replaceable></filename> file to
               contain the following:</para>
             <programlisting>STARTMODE='auto'
 BOOTPROTO='static'</programlisting>
@@ -144,7 +157,7 @@ BOOTPROTO='static'</programlisting>
     <procedure>
       <title>To configure networking:</title>
       <step>
-        <para>Configure the management interface:</para>
+        <para>Configure the first interface as the management interface:</para>
         <para>IP address: 10.0.0.31</para>
         <para>Network mask: 255.255.255.0 (or /24)</para>
         <para>Default gateway: 10.0.0.1</para>
@@ -154,7 +167,8 @@ BOOTPROTO='static'</programlisting>
         </note>
       </step>
       <step>
-        <para>Configure the instance tunnels interface:</para>
+        <para>Configure the second interface as the instance tunnels
+          interface:</para>
         <para>IP address: 10.0.1.31</para>
         <para>Network mask: 255.255.255.0 (or /24)</para>
         <note>

doc/install-guide/section_basics-networking-nova.xml

@@ -10,6 +10,13 @@
     <glossterm>management network</glossterm>. The compute node contains
     one network interface on the management network and one on the
     <glossterm>external network</glossterm>.</para>
+  <note>
+    <para>Network interface names vary by distribution. Traditionally,
+      interfaces use "eth" followed by a sequential number. To cover all
+      variations, this guide simply refers to the first interface as the
+      interface with the lowest number and the second interface as the
+      interface with the highest number.</para>
+  </note>
   <figure>
     <title>Two-node architecture with legacy networking (nova-network)</title>
     <mediaobject>
@@ -36,7 +43,7 @@
     <procedure>
       <title>To configure networking:</title>
       <step>
-        <para>Configure the management interface:</para>
+        <para>Configure the first interface as the management interface:</para>
         <para>IP address: 10.0.0.11</para>
         <para>Network mask: 255.255.255.0 (or /24)</para>
         <para>Default gateway: 10.0.0.1</para>
@@ -64,7 +71,7 @@
     <procedure>
       <title>To configure networking:</title>
       <step>
-        <para>Configure the management interface:</para>
+        <para>Configure the first interface as the management interface:</para>
         <para>IP address: 10.0.0.31</para>
         <para>Network mask: 255.255.255.0 (or /24)</para>
         <para>Default gateway: 10.0.0.1</para>
@@ -75,32 +82,36 @@
       </step>
       <step>
         <para>The external interface uses a special configuration without an
-          IP address assigned to it. Configure the external interface:</para>
+          IP address assigned to it. Configure the second interface as the
+          external interface:</para>
+        <para>Replace <replaceable>INTERFACE_NAME</replaceable> with the
+          actual interface name. For example, <emphasis>eth1</emphasis> or
+          <emphasis>ens224</emphasis>.</para>
         <substeps>
           <step os="ubuntu;debian">
             <para>Edit the <filename>/etc/network/interfaces</filename> file
               to contain the following:</para>
             <programlisting># The external network interface
-auto eth1
+auto <replaceable>INTERFACE_NAME</replaceable>
-iface eth1 inet manual
+iface <replaceable>INTERFACE_NAME</replaceable> inet manual
         up ip link set dev $IFACE up
         down ip link set dev $IFACE down</programlisting>
           </step>
           <step os="rhel;centos;fedora">
             <para>Edit the
-              <filename>/etc/sysconfig/network-scripts/ifcfg-eth1</filename>
+              <filename>/etc/sysconfig/network-scripts/ifcfg-<replaceable>INTERFACE_NAME</replaceable></filename>
               file to contain the following:</para>
             <para>Do not change the <literal>HWADDR</literal> and
               <literal>UUID</literal> keys.</para>
-            <programlisting>DEVICE=eth1
+            <programlisting>DEVICE=<replaceable>INTERFACE_NAME</replaceable>
 TYPE=Ethernet
 ONBOOT="yes"
 BOOTPROTO="none"</programlisting>
           </step>
           <step os="sles;opensuse">
             <para>Edit the
-              <filename>/etc/sysconfig/network/ifcfg-eth1</filename> file to
+              <filename>/etc/sysconfig/network/ifcfg-<replaceable>INTERFACE_NAME</replaceable></filename>
-              contain the following:</para>
+              file to contain the following:</para>
             <programlisting>STARTMODE='auto'
 BOOTPROTO='static'</programlisting>
               </step>

doc/install-guide/section_neutron-ml2-network-node.xml

@@ -456,8 +456,11 @@ enable_security_group = True</programlisting>
     </step>
     <step>
       <para>Add a port to the external bridge that connects to the physical
-        external network interface (eth2):</para>
+        external network interface:</para>
-      <screen><prompt>#</prompt> <userinput>ovs-vsctl add-port br-ex eth2</userinput></screen>
+      <para>Replace <replaceable>INTERFACE_NAME</replaceable> with the
+        actual interface name. For example, <emphasis>eth2</emphasis> or
+        <emphasis>ens256</emphasis>.</para>
+      <screen><prompt>#</prompt> <userinput>ovs-vsctl add-port br-ex <replaceable>INTERFACE_NAME</replaceable></userinput></screen>
       <note>
         <para>Depending on your network interface driver, you may need to
           disable <glossterm>Generic Receive Offload (GRO)</glossterm> to
@@ -465,7 +468,7 @@ enable_security_group = True</programlisting>
           network.</para>
         <para>To temporarily disable GRO on the external network interface
           while testing your environment:</para>
-        <screen><prompt>#</prompt> <userinput>ethtool -K eth2 gro off</userinput></screen>
+        <screen><prompt>#</prompt> <userinput>ethtool -K <replaceable>INTERFACE_NAME</replaceable> gro off</userinput></screen>
       </note>
     </step>
   </procedure>

doc/install-guide/section_nova-compute.xml

@@ -15,60 +15,7 @@
     guide uses KVM.</para>
   <procedure>
     <step>
-      <para>
+      <para>Install the Compute packages:</para>
-        Configure the system.  Use the instructions in <xref
-        linkend="ch_basics"/>, but note the following differences from
-        the controller node:</para>
-      <itemizedlist>
-        <listitem>
-          <para>Use different IP addresses when you configure
-              <filename>eth0</filename>. This guide uses
-              <literal>10.0.0.31</literal> for the management
-            network of the first compute node.
-            </para>
-            <para>
-              If you run OpenStack Networking (neutron), configure
-              <literal>eth1</literal> as instance tunnels interface
-              with IP address <literal>10.0.1.31</literal> for the
-              first compute node. For details, see the instructions in
-              <xref linkend="basics-neutron-networking-compute-node"/>
-          </para>
-            <para>
-              If you run legacy networking (nova-network), do not
-              configure <literal>eth1</literal> with a static IP
-              address. The networking component of OpenStack assigns
-              and configures an IP address. For details, see the
-              instructions in <xref
-              linkend="basics-networking-node-compute-node"/>.
-            </para>
-        </listitem>
-        <listitem>
-          <para>Set the host name to <literal>compute1</literal>. To
-            verify, use the <code>uname -n</code> parameter. Ensure
-            that the IP addresses and host names for both nodes are
-            listed in the <filename>/etc/hosts</filename> file on each
-            system.</para>
-        </listitem>
-        <listitem>
-          <para>Synchronize from the controller node. Follow the
-            instructions in <xref linkend="basics-ntp"/>.</para>
-        </listitem>
-        <listitem>
-          <para>Install the MySQL client libraries. You do not need to
-            install the MySQL database server or start the MySQL
-            service.</para>
-        </listitem>
-        <listitem>
-          <para>Enable the OpenStack packages for the distribution
-            that you are using. See <xref linkend="basics-packages"
-            />.</para>
-        </listitem>
-      </itemizedlist>
-    </step>
-    <step>
-      <para>After you configure the operating system, install the
-        appropriate packages for the Compute service.</para>
-      <para os="ubuntu;debian">Run this command:</para>
       <screen os="ubuntu;debian"><prompt>#</prompt> <userinput>apt-get install nova-compute-kvm python-guestfs</userinput></screen>
       <para os="ubuntu;debian">When prompted to create a
           <literal>supermin</literal> appliance, respond

doc/install-guide/section_nova-networking-compute-node.xml

@@ -21,6 +21,9 @@
     <title>To configure legacy networking</title>
     <step os="rhel;centos;fedora;sles;opensuse">
       <para>Run the following commands:</para>
+      <para>Replace <replaceable>INTERFACE_NAME</replaceable> with the
+        actual interface name for the external network. For example,
+        <emphasis>eth1</emphasis> or <emphasis>ens224</emphasis>.</para>
       <screen><prompt>#</prompt> <userinput>openstack-config --set /etc/nova/nova.conf DEFAULT \
   network_api_class nova.network.api.API</userinput>
 <prompt>#</prompt> <userinput>openstack-config --set /etc/nova/nova.conf DEFAULT \
@@ -41,16 +44,19 @@
   share_dhcp_address True</userinput>
 <prompt>#</prompt> <userinput>openstack-config --set /etc/nova/nova.conf DEFAULT \
   force_dhcp_release True</userinput>
-<prompt>#</prompt> <userinput>openstack-config --set /etc/nova/nova.conf DEFAULT \
-  flat_interface eth1</userinput>
 <prompt>#</prompt> <userinput>openstack-config --set /etc/nova/nova.conf DEFAULT \
   flat_network_bridge br100</userinput>
 <prompt>#</prompt> <userinput>openstack-config --set /etc/nova/nova.conf DEFAULT \
-  public_interface eth1</userinput></screen>
+  flat_interface <replaceable>INTERFACE_NAME</replaceable></userinput>
+<prompt>#</prompt> <userinput>openstack-config --set /etc/nova/nova.conf DEFAULT \
+  public_interface <replaceable>INTERFACE_NAME</replaceable></userinput></screen>
     </step>
     <step os="ubuntu;debian">
       <para>Edit the <filename>/etc/nova/nova.conf</filename> file and add the
         following keys to the <literal>[DEFAULT]</literal> section:</para>
+      <para>Replace <replaceable>INTERFACE_NAME</replaceable> with the
+        actual interface name for the external network. For example,
+        <emphasis>eth1</emphasis> or <emphasis>ens224</emphasis>.</para>
       <programlisting language="ini">[DEFAULT]
 ...
 network_api_class = nova.network.api.API
@@ -64,8 +70,8 @@ send_arp_for_ha = True
 share_dhcp_address = True
 force_dhcp_release = True
 flat_network_bridge = br100
-flat_interface = eth1
+flat_interface = <replaceable>INTERFACE_NAME</replaceable>
-public_interface = eth1</programlisting>
+public_interface = <replaceable>INTERFACE_NAME</replaceable></programlisting>
     </step>
     <step>
       <para os="ubuntu;debian">Restart the services:</para>