openstack/openstack-manuals
Code Issues Proposed changes

Arch Design: Small edits

Browse Source 
Fix capitalization and markup.

Change-Id: I38a4a20cf9830fa07c769c34eb1ffd7578948317
This commit is contained in:
Andreas Jaeger 2014-08-07 20:28:18 +02:00
parent 5659c36a2b
commit 32e98f5045
4 changed files with 87 additions and 38 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
doc/arch-design/ch_compute_focus.xml
View File

@ -31,13 +31,13 @@
<para>Platform-as-a-Service (PaaS)</para> <para>Platform-as-a-Service (PaaS)</para>
</listitem> </listitem>
<listitem> <listitem>
<para>Signal processing for Network Function Virtualization (NFV)</para> <para>Signal processing for network function virtualization (NFV)</para>
</listitem> </listitem>
</itemizedlist> </itemizedlist>
<para>Based on the use case requirements, such clouds might need to provide <para>Based on the use case requirements, such clouds might need to provide
additional services such as a virtual machine disk library, file or object additional services such as a virtual machine disk library, file or object
storage, firewalls, load balancers, IP addresses, and network connectivity storage, firewalls, load balancers, IP addresses, and network connectivity
in the form of overlays or virtual Local Area Networks (VLANs). A in the form of overlays or virtual local area networks (VLANs). A
compute-focused OpenStack cloud will not typically use raw block storage compute-focused OpenStack cloud will not typically use raw block storage
services since the applications hosted on a compute-focused OpenStack services since the applications hosted on a compute-focused OpenStack
cloud generally do not need persistent block storage.</para> cloud generally do not need persistent block storage.</para>

61
doc/arch-design/ch_network_focus.xml
View File

@ -10,16 +10,18 @@
network communication in order to function properly due to a network communication in order to function properly due to a
service-based nature. In some cases, however, use cases service-based nature. In some cases, however, use cases
dictate that the network is elevated beyond simple dictate that the network is elevated beyond simple
infrastructure. This section is a discussion of architectures infrastructure. This chapter is a discussion of architectures
that are more reliant or focused on network services. These that are more reliant or focused on network services. These
architectures are heavily dependent on the network architectures are heavily dependent on the network
infrastructure and need to be architected so that the network infrastructure and need to be architected so that the network
services perform and are reliable in order to satisfy user and services perform and are reliable in order to satisfy user and
application requirements.</para> application requirements.</para>
<para>Some possible use cases include:</para> <para>Some possible use cases include:</para>
<itemizedlist> <variablelist>
<varlistentry>
<term>Content delivery network</term>
<listitem> <listitem>
<para>Content Delivery Network: This could include <para>This could include
streaming video, photographs or any other cloud based streaming video, photographs or any other cloud based
repository of data that is distributed to a large repository of data that is distributed to a large
number of end users. Mass market streaming video will number of end users. Mass market streaming video will
@ -36,21 +38,30 @@
as well as the WAN architecture and the cache as well as the WAN architecture and the cache
methodology.</para> methodology.</para>
</listitem> </listitem>
</varlistentry>
<varlistentry>
<term>Network management functions</term>
<listitem> <listitem>
<para>Network Management Functions: A cloud that provides <para>A cloud that provides
network service functions would be built to support network service functions would be built to support
the delivery of back-end network services such as DNS, the delivery of back-end network services such as DNS,
NTP or SNMP and would be used by a company for NTP or SNMP and would be used by a company for
internal network management.</para> internal network management.</para>
</listitem> </listitem>
</varlistentry>
<varlistentry>
<term>Network service offerings</term>
<listitem> <listitem>
<para>Network Service Offerings: A cloud can be used to <para>A cloud can be used to
run customer facing network tools to support services. run customer facing network tools to support services.
For example, VPNs, MPLS private networks, GRE tunnels For example, VPNs, MPLS private networks, GRE tunnels
and others.</para> and others.</para>
</listitem> </listitem>
</varlistentry>
<varlistentry>
<term>Web portals or web services</term>
<listitem> <listitem>
<para>Web portals / Web Services: Web servers are a common <para>Web servers are a common
application for cloud services and it is recommended application for cloud services and it is recommended
to have an understanding of the network requirements. to have an understanding of the network requirements.
The network will need to be able to scale out to meet The network will need to be able to scale out to meet
@ -59,8 +70,11 @@
bandwidth must be considered depending on the details bandwidth must be considered depending on the details
of the portal architecture.</para> of the portal architecture.</para>
</listitem> </listitem>
</varlistentry>
<varlistentry>
<term>High speed and high volume transactional systems</term>
<listitem> <listitem>
<para>High Speed and High Volume Transactional Systems: <para>
These types of applications are very sensitive to These types of applications are very sensitive to
network configurations. Examples include many network configurations. Examples include many
financial systems, credit card transaction financial systems, credit card transaction
@ -73,8 +87,11 @@
performance database back ends that need to be performance database back ends that need to be
accessed.</para> accessed.</para>
</listitem> </listitem>
</varlistentry>
<varlistentry>
<term>High availability</term>
<listitem> <listitem>
<para>High Availability: These types of use cases are <para>These types of use cases are
highly dependent on the proper sizing of the network highly dependent on the proper sizing of the network
to maintain replication of data between sites for high to maintain replication of data between sites for high
availability. If one site becomes unavailable, the availability. If one site becomes unavailable, the
@ -83,8 +100,11 @@
important to size network capacity to handle the loads important to size network capacity to handle the loads
that are desired.</para> that are desired.</para>
</listitem> </listitem>
</varlistentry>
<varlistentry>
<term>Big data</term>
<listitem> <listitem>
<para>Big Data: Clouds that will be used for the <para>Clouds that will be used for the
management and collection of big data (data ingest) management and collection of big data (data ingest)
will have a significant demand on network resources. will have a significant demand on network resources.
Big data often uses partial replicas of the data to Big data often uses partial replicas of the data to
@ -94,8 +114,11 @@
NuoDB, RIAK and other No-SQL and distributed NuoDB, RIAK and other No-SQL and distributed
databases.</para> databases.</para>
</listitem> </listitem>
</varlistentry>
<varlistentry>
<term>Virtual desktop infrastructure (VDI)</term>
<listitem> <listitem>
<para>Virtual Desktop Infrastructure (VDI): This use case <para>This use case
is very sensitive to network congestion, latency, is very sensitive to network congestion, latency,
jitter and other network characteristics. Like video jitter and other network characteristics. Like video
streaming, the user experience is very important streaming, the user experience is very important
@ -105,8 +128,11 @@
caching for the delivery of the application to the end caching for the delivery of the application to the end
user.</para> user.</para>
</listitem> </listitem>
</varlistentry>
<varlistentry>
<term>Voice over IP (VoIP)</term>
<listitem> <listitem>
<para>Voice over IP (VoIP): This is extremely sensitive to <para>This is extremely sensitive to
network congestion, latency, jitter and other network network congestion, latency, jitter and other network
characteristics. VoIP has a symmetrical traffic characteristics. VoIP has a symmetrical traffic
pattern and it requires network quality of service pattern and it requires network quality of service
@ -116,8 +142,11 @@
jitter fluctuations and can detect them at very low jitter fluctuations and can detect them at very low
levels.</para> levels.</para>
</listitem> </listitem>
</varlistentry>
<varlistentry>
<term>Video Conference or web conference</term>
<listitem> <listitem>
<para>Video Conference / Web Conference: This also is <para>This also is
extremely sensitive to network congestion, latency, extremely sensitive to network congestion, latency,
jitter and other network flaws. Video Conferencing has jitter and other network flaws. Video Conferencing has
a symmetrical traffic pattern, but unless the network a symmetrical traffic pattern, but unless the network
@ -126,8 +155,11 @@
Similar to VOIP, users will be sensitive to network Similar to VOIP, users will be sensitive to network
performance issues even at low levels.</para> performance issues even at low levels.</para>
</listitem> </listitem>
</varlistentry>
<varlistentry>
<term>High performance computing (HPC)</term>
<listitem> <listitem>
<para>High Performance Computing (HPC): This is a complex <para>This is a complex
use case that requires careful consideration of the use case that requires careful consideration of the
traffic flows and usage patterns to address the needs traffic flows and usage patterns to address the needs
of cloud clusters. It has high East-West traffic of cloud clusters. It has high East-West traffic
@ -135,7 +167,8 @@
substantial North-South traffic depending on the substantial North-South traffic depending on the
specific application.</para> specific application.</para>
</listitem> </listitem>
</itemizedlist> </varlistentry>
</variablelist>
<xi:include href="network_focus/section_user_requirements_network_focus.xml"/> <xi:include href="network_focus/section_user_requirements_network_focus.xml"/>
<xi:include href="network_focus/section_tech_considerations_network_focus.xml"/> <xi:include href="network_focus/section_tech_considerations_network_focus.xml"/>

56
doc/arch-design/ch_specialized.xml
View File

@ -17,34 +17,50 @@
for each use case:</para> for each use case:</para>
<itemizedlist> <itemizedlist>
<listitem> <listitem>
<para>Specialized Networking: This describes running <para>
networking-oriented software that may involve reading <link
packets directly from the wire or participating in linkend="specialized-networking-example">Specialized
routing protocols.</para> Networking</link>: This describes running
networking-oriented software that may involve reading
packets directly from the wire or participating in
routing protocols.
</para>
</listitem> </listitem>
<listitem> <listitem>
<para>Software-Defined Networking: This use case details <para>
both running an SDN controller from within OpenStack <link
as well as participating in a software-defined linkend="software-defined-networking-sdn">Software-defined
network.</para> networking (SDN)</link>: This use case details both
running an SDN controller from within OpenStack as well
as participating in a software-defined network.
</para>
</listitem> </listitem>
<listitem> <listitem>
<para>Desktop-as-a-Service: This is for organizations that <para>
want to run a virtualized desktop environment on a <link
cloud. This can apply to private or public linkend="desktop-as-a-service">Desktop-as-a-Service</link>:
clouds.</para> This is for organizations that want to run a virtualized
desktop environment on a cloud. This can apply to
private or public clouds.
</para>
</listitem> </listitem>
<listitem> <listitem>
<para>OpenStack on OpenStack: Some organizations are <para>
finding that it makes technical sense to build a <link
multi-tiered cloud by running OpenStack on top of an linkend="arch-guide-openstack-on-openstack">OpenStack on
OpenStack installation.</para> OpenStack</link>: Some organizations are finding that it
makes technical sense to build a multi-tiered cloud by
running OpenStack on top of an OpenStack
installation.
</para>
</listitem> </listitem>
<listitem> <listitem>
<para>Specialized Hardware: Some highly specialized <para>
situations will require the use of specialized <link linkend="specialized-hardware">Specialized
hardware devices from within the OpenStack hardware</link>: Some highly specialized situations will
environment.</para> require the use of specialized hardware devices from
within the OpenStack environment.
</para>
</listitem> </listitem>
</itemizedlist> </itemizedlist>

4
doc/arch-design/specialized/section_software_defined_networking_specialized.xml
View File

@ -5,8 +5,8 @@
version="5.0" version="5.0"
xml:id="software-defined-networking-sdn"> xml:id="software-defined-networking-sdn">
<?dbhtml stop-chunking?> <?dbhtml stop-chunking?>
<title>Software Defined Networking</title> <title>Software-defined networking</title>
<para>Software Defined Networking (SDN) is the separation of the data <para>Software-defined networking (SDN) is the separation of the data
plane and control plane. SDN has become a popular method of plane and control plane. SDN has become a popular method of
managing and controlling packet flows within networks. SDN managing and controlling packet flows within networks. SDN
uses overlays or directly controlled layer 2 devices to uses overlays or directly controlled layer 2 devices to