Merge "Clarified example architectures"
This commit is contained in:
Jenkins
Gerrit Code Review
commit
d95fcf1f5e
@ -22,21 +22,35 @@
|
||||
<xi:include href="../common/section_getstart_conceptual_arch.xml"/>
|
||||
<xi:include href="../common/section_getstart_logical_arch.xml"/>
|
||||
<section xml:id="overview-architecture">
|
||||
<title>Sample architectures</title>
|
||||
<title>Example architectures</title>
|
||||
<para>This guide enables you to choose your own OpenStack
|
||||
adventure. OpenStack is highly configurable to meet different
|
||||
needs with various storage and networking options.</para>
|
||||
<para>This guide offers the following sample architecture
|
||||
examples:</para>
|
||||
needs with various compute, networking, and storage options.</para>
|
||||
<para>This guide uses the following example architectures:</para>
|
||||
<itemizedlist>
|
||||
<listitem>
|
||||
<para>Example basic architecture. This architecture has two
|
||||
nodes. A cloud controller node runs the control services,
|
||||
such as database, message queue, and API services for the
|
||||
Identity Service, Image Service, and Compute. A compute node
|
||||
runs the hypervisor where virtual machines live.</para>
|
||||
<figure xml:id="basic-architecture">
|
||||
<title>Basic architecture</title>
|
||||
<para>Basic architecture with legacy networking</para>
|
||||
<itemizedlist>
|
||||
<listitem>
|
||||
<para>The controller node runs the Identity Service, Image Service,
|
||||
Dashboard, and management portion of Compute. It also contains
|
||||
the associated API services, MySQL databases, and messaging
|
||||
system.</para>
|
||||
</listitem>
|
||||
<listitem>
|
||||
<para>The compute node runs the hypervisor portion of Compute,
|
||||
which operates tenant virtual machines. By default, Compute uses
|
||||
KVM as the hypervisor. Compute also provisions and operates
|
||||
tenant networks and implements security groups. You may run more
|
||||
than one compute node.</para>
|
||||
</listitem>
|
||||
<listitem>
|
||||
<para>When implementing this architecture, skip
|
||||
<xref linkend="ch_neutron" />.</para>
|
||||
</listitem>
|
||||
</itemizedlist>
|
||||
<figure xml:id="basic-architecture-with-legacy-networking">
|
||||
<title>Basic Architecture with Legacy Networking</title>
|
||||
<mediaobject>
|
||||
<imageobject>
|
||||
<imagedata contentwidth="6in"
|
||||
@ -44,35 +58,47 @@
|
||||
</imageobject>
|
||||
</mediaobject>
|
||||
</figure>
|
||||
<para>Technical details: Compute with KVM, local ephemeral
|
||||
storage, <systemitem class="service">nova-network</systemitem> in multi-host flatDHCP mode, MySQL,
|
||||
nova-api, default scheduler, <phrase os="fedora;rhel;centos"
|
||||
>Qpid for messaging,</phrase><phrase
|
||||
os="ubuntu;debian;opensuse">RabbitMQ for
|
||||
messaging,</phrase> Identity Service with SQL back end, Image Service with
|
||||
local storage, Dashboard (optional extra). Uses as many
|
||||
default options as possible.</para>
|
||||
</listitem>
|
||||
<listitem>
|
||||
<para>Example architecture from the <link
|
||||
xlink:href="http://docs.openstack.org/trunk/openstack-ops/content/"
|
||||
><citetitle>OpenStack Operations
|
||||
Guide</citetitle></link>. Same as the basic architecture
|
||||
but with the Block Storage Service LVM/iSCSI back end, <systemitem class="service">nova-network</systemitem> in
|
||||
multi-host with FlatDHCP, Live Migration back end, shared
|
||||
storage with NFS, and Object Storage. One controller node
|
||||
and multiple compute nodes.</para>
|
||||
</listitem>
|
||||
<listitem>
|
||||
<para>Example architecture with Identity Service and Object
|
||||
Storage: Four-node installation with Identity Service on the
|
||||
proxy node and three replications of object servers.
|
||||
Dashboard does not support this configuration so examples
|
||||
are with CLI.</para>
|
||||
</listitem>
|
||||
<listitem>
|
||||
<para>Example architecture with OpenStack Networking.</para>
|
||||
<para>Basic architecture with OpenStack Networking (Neutron)</para>
|
||||
<itemizedlist>
|
||||
<listitem>
|
||||
<para>The controller node runs the Identity Service, Image Service,
|
||||
Dashboard, and management portions of Compute and Networking.
|
||||
It also contains the associated API services, MySQL databases,
|
||||
and messaging system.</para>
|
||||
</listitem>
|
||||
<listitem>
|
||||
<para>The network node runs the Networking plug-in agent and
|
||||
several layer 3 agents that provision tenant networks and
|
||||
provide services to them, including routing, NAT, and DHCP.
|
||||
It also handles external (internet) connectivity for tenant
|
||||
virtual machines.</para>
|
||||
</listitem>
|
||||
<listitem>
|
||||
<para>The compute node runs the hypervisor portion of Compute,
|
||||
which operates tenant virtual machines. By default, Compute uses
|
||||
KVM as the hypervisor. The compute node also runs the Networking
|
||||
plug-in agent, which operates tenant networks and implements
|
||||
security groups. You may run more than one compute node.</para>
|
||||
</listitem>
|
||||
<listitem>
|
||||
<para>When implementing this architecture, skip
|
||||
<xref linkend="nova-network" />.</para>
|
||||
</listitem>
|
||||
</itemizedlist>
|
||||
<figure xml:id="basic-architecture-with-virtual-networking">
|
||||
<title>Basic Architecture with OpenStack Networking (Neutron)</title>
|
||||
<mediaobject>
|
||||
<imageobject>
|
||||
<imagedata contentwidth="5in"
|
||||
fileref="../common/figures/Neutron-PhysNet-Diagram.png"/>
|
||||
</imageobject>
|
||||
</mediaobject>
|
||||
</figure>
|
||||
</listitem>
|
||||
</itemizedlist>
|
||||
<para>You may add nodes that run Block Storage or Object Storage to
|
||||
either of these architectures.</para>
|
||||
</section>
|
||||
</chapter>
|
||||
|
||||
Loading…
Reference in New Issue
Block a user