Arch Design: Edits on compute_focus and storage_focus
Edits to follow conventions. Change-Id: I640d27ac6d6b1bc1878b6f196b6c4936f316c914
This commit is contained in:
Andreas Jaeger
parent
3499f2de60
commit
e5ba83585d
@ -11,7 +11,7 @@
|
||||
provides particle accelerators and other infrastructure for
|
||||
high-energy physics research.</para>
|
||||
<para>As of 2011 CERN operated these two compute centers in Europe
|
||||
with plans to add a third:</para>
|
||||
with plans to add a third.</para>
|
||||
<para>To support a growing number of compute heavy users of
|
||||
experiments related to the Large Hadron Collider (LHC) CERN
|
||||
ultimately elected to deploy an OpenStack cloud using
|
||||
|
||||
@ -1,4 +1,8 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<!DOCTYPE section [
|
||||
<!ENTITY % openstack SYSTEM "../../common/entities/openstack.ent">
|
||||
%openstack;
|
||||
]>
|
||||
<section xmlns="http://docbook.org/ns/docbook"
|
||||
xmlns:xi="http://www.w3.org/2001/XInclude"
|
||||
xmlns:xlink="http://www.w3.org/1999/xlink"
|
||||
@ -9,24 +13,33 @@
|
||||
<para>Compute intensive workloads are defined by their high
|
||||
utilization of CPU, RAM, or both. User requirements will
|
||||
determine if a cloud must be built to accommodate anticipated
|
||||
performance demands.</para>
|
||||
<itemizedlist>
|
||||
performance demands.
|
||||
</para>
|
||||
<variablelist>
|
||||
<varlistentry>
|
||||
<term>Cost</term>
|
||||
<listitem>
|
||||
<para>Cost: Cost is not generally a primary concern for a
|
||||
<para>Cost is not generally a primary concern for a
|
||||
compute-focused cloud, however some organizations
|
||||
might be concerned with cost avoidance. Repurposing
|
||||
existing resources to tackle compute-intensive tasks
|
||||
instead of needing to acquire additional resources may
|
||||
offer cost reduction opportunities.</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
<varlistentry>
|
||||
<term>Time to market</term>
|
||||
<listitem>
|
||||
<para>Time to Market: Compute-focused clouds can be used
|
||||
<para>Compute-focused clouds can be used
|
||||
to deliver products more quickly, for example,
|
||||
speeding up a company's software development life cycle
|
||||
(SDLC) for building products and applications.</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
<varlistentry>
|
||||
<term>Revenue opportunity</term>
|
||||
<listitem>
|
||||
<para>Revenue Opportunity: Companies that are interested
|
||||
<para>Companies that are interested
|
||||
in building services or products that rely on the
|
||||
power of the compute resources will benefit from a
|
||||
compute-focused cloud. Examples include the analysis
|
||||
@ -35,7 +48,8 @@
|
||||
rendering, scientific computation, or
|
||||
simulations.</para>
|
||||
</listitem>
|
||||
</itemizedlist>
|
||||
</varlistentry>
|
||||
</variablelist>
|
||||
<section xml:id="legal-requirements-compute-focus">
|
||||
<title>Legal requirements</title>
|
||||
<para>Many jurisdictions have legislative and regulatory
|
||||
@ -57,33 +71,41 @@
|
||||
jurisdictions.</para>
|
||||
</listitem>
|
||||
<listitem>
|
||||
<para>Data compliance - certain types of information needs
|
||||
to reside in certain locations due to regular issues -
|
||||
and more important cannot reside in other locations
|
||||
<para>Data compliance—certain types of information needs
|
||||
to reside in certain locations due to regular issues—and
|
||||
more important cannot reside in other locations
|
||||
for the same reason.</para>
|
||||
</listitem>
|
||||
</itemizedlist>
|
||||
<para>Examples of such legal frameworks include the data
|
||||
protection framework of the European Union
|
||||
(http://ec.europa.eu/justice/data-protection/ ) and the
|
||||
requirements of the Financial Industry Regulatory Authority
|
||||
(http://www.finra.org/Industry/Regulation/FINRARules/ ) in the
|
||||
United States. Consult a local regulatory body for more
|
||||
<para>
|
||||
Examples of such legal frameworks include the <link
|
||||
xlink:href="http://ec.europa.eu/justice/data-protection/">data
|
||||
protection framework</link> of the European Union and the
|
||||
requirements of the <link
|
||||
xlink:href="http://www.finra.org/Industry/Regulation/FINRARules/">Financial
|
||||
Industry Regulatory Authority</link> in the United
|
||||
States. Consult a local regulatory body for more
|
||||
information.</para></section>
|
||||
<section xml:id="technical-considerations-compute-focus-user">
|
||||
<title>Technical considerations</title>
|
||||
<para>The following are some technical requirements that need to
|
||||
be incorporated into the architecture design.</para>
|
||||
<itemizedlist>
|
||||
be incorporated into the architecture design.
|
||||
</para>
|
||||
<variablelist>
|
||||
<varlistentry>
|
||||
<term>Performance</term>
|
||||
<listitem>
|
||||
<para>Performance: If a primary technical concern is for
|
||||
<para>If a primary technical concern is for
|
||||
the environment to deliver high performance
|
||||
capability, then a compute-focused design is an
|
||||
obvious choice because it is specifically designed to
|
||||
host compute-intensive workloads.</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
<varlistentry>
|
||||
<term>Workload persistence</term>
|
||||
<listitem>
|
||||
<para>Workload persistence: Workloads can be either
|
||||
<para>Workloads can be either
|
||||
short-lived or long running. Short-lived workloads
|
||||
might include continuous integration and continuous
|
||||
deployment (CI-CD) jobs, where large numbers of
|
||||
@ -104,8 +126,11 @@
|
||||
workloads is legacy applications that typically are
|
||||
persistent over time.</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
<varlistentry>
|
||||
<term>Storage</term>
|
||||
<listitem>
|
||||
<para>Storage: Workloads targeted for a compute-focused
|
||||
<para>Workloads targeted for a compute-focused
|
||||
OpenStack cloud generally do not require any
|
||||
persistent block storage (although some usages of
|
||||
Hadoop with HDFS may dictate the use of persistent
|
||||
@ -118,8 +143,11 @@
|
||||
scale the object store or shared file system to match
|
||||
the storage demand.</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
<varlistentry>
|
||||
<term>User interface</term>
|
||||
<listitem>
|
||||
<para>User Interface: Like any other cloud architecture, a
|
||||
<para>Like any other cloud architecture, a
|
||||
compute-focused OpenStack cloud requires an on-demand
|
||||
and self-service user interface. End users must be
|
||||
able to provision computing power, storage, networks
|
||||
@ -127,8 +155,11 @@
|
||||
scaling the infrastructure up to a substantial level
|
||||
without disrupting host operations.</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
<varlistentry>
|
||||
<term>Security</term>
|
||||
<listitem>
|
||||
<para>Security: Security is going to be highly dependent
|
||||
<para>Security is going to be highly dependent
|
||||
on the business requirements. For example, a
|
||||
computationally intense drug discovery application
|
||||
will obviously have much higher security requirements
|
||||
@ -137,11 +168,14 @@
|
||||
recommendations and guidelines provided in the
|
||||
OpenStack Security Guide are applicable.</para>
|
||||
</listitem>
|
||||
</itemizedlist></section>
|
||||
</varlistentry>
|
||||
</variablelist>
|
||||
</section>
|
||||
<section xml:id="operational-considerations-compute-focus-user">
|
||||
<title>Operational considerations</title>
|
||||
<para>The compute intensive cloud from the operational perspective
|
||||
is similar to the requirements for the general-purpose cloud.
|
||||
More details on operational requirements can be found in the
|
||||
general-purpose design section.</para></section>
|
||||
general-purpose design section.</para>
|
||||
</section>
|
||||
</section>
|
||||
|
||||
@ -1,4 +1,8 @@
|
||||
<?xml version="1.0" encoding="UTF-8"?>
|
||||
<!DOCTYPE section [
|
||||
<!ENTITY % openstack SYSTEM "../../common/entities/openstack.ent">
|
||||
%openstack;
|
||||
]>
|
||||
<section xmlns="http://docbook.org/ns/docbook"
|
||||
xmlns:xi="http://www.w3.org/2001/XInclude"
|
||||
xmlns:xlink="http://www.w3.org/1999/xlink"
|
||||
@ -31,14 +35,19 @@
|
||||
performance and scalability of the design architecture. A
|
||||
number of different factors must be considered in the design
|
||||
process:</para>
|
||||
<itemizedlist>
|
||||
<variablelist>
|
||||
<varlistentry>
|
||||
<term>Cost</term>
|
||||
<listitem>
|
||||
<para>Cost: The overall cost of the solution will play a
|
||||
<para>The overall cost of the solution will play a
|
||||
major role in what storage architecture and the
|
||||
resulting storage hardware that is selected.</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
<varlistentry>
|
||||
<term>Performance</term>
|
||||
<listitem>
|
||||
<para>Performance: The performance of the solution,
|
||||
<para>The performance of the solution,
|
||||
measured by observing the latency of storage I-O
|
||||
requests, also plays a major role. In a
|
||||
compute-focused OpenStack cloud storage latency could
|
||||
@ -48,10 +57,11 @@
|
||||
storage can have a significant impact on the overall
|
||||
performance of the application.</para>
|
||||
</listitem>
|
||||
</itemizedlist>
|
||||
<itemizedlist>
|
||||
</varlistentry>
|
||||
<varlistentry>
|
||||
<term>Scalability</term>
|
||||
<listitem>
|
||||
<para>Scalability: "Scalability" refers to how well the
|
||||
<para>"Scalability" refers to how well the
|
||||
storage solution performs as it is expanded up to its
|
||||
maximum size. A storage solution that performs well in
|
||||
small configurations but has degrading performance as
|
||||
@ -61,8 +71,11 @@
|
||||
ability of the storage solution to continue to perform
|
||||
well as it expands is important.</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
<varlistentry>
|
||||
<term>Expandability</term>
|
||||
<listitem>
|
||||
<para>Expandability: Here we are referring to the overall
|
||||
<para>Here we are referring to the overall
|
||||
ability of the solution to grow. A storage solution
|
||||
that expands to 50 PB is considered more expandable
|
||||
than a solution that only scales to 10 PB. Note that
|
||||
@ -70,7 +83,8 @@
|
||||
scalability which is a measure of the solution's
|
||||
performance as it expands.</para>
|
||||
</listitem>
|
||||
</itemizedlist>
|
||||
</varlistentry>
|
||||
</variablelist>
|
||||
<para>Latency is one of the key considerations in a
|
||||
storage-focused OpenStack cloud . Using solid-state disks
|
||||
(SSDs) to minimize latency for instance storage and reduce CPU
|
||||
@ -97,9 +111,11 @@
|
||||
<para>Some potential impacts that might affect a particular
|
||||
storage architecture (and corresponding storage hardware) of a
|
||||
Storage-focused OpenStack cloud:</para>
|
||||
<itemizedlist>
|
||||
<variablelist>
|
||||
<varlistentry>
|
||||
<term>Connectivity</term>
|
||||
<listitem>
|
||||
<para>Connectivity: Based on the storage solution
|
||||
<para>Based on the storage solution
|
||||
selected, ensure the connectivity matches the storage
|
||||
solution requirements. If a centralized storage array
|
||||
is selected it is important to determine how the
|
||||
@ -109,48 +125,70 @@
|
||||
characteristics will minimize latency to boost the
|
||||
overall performance of the design.</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
<varlistentry>
|
||||
<term>Latency</term>
|
||||
<listitem>
|
||||
<para>Latency: Determine if the use case will have
|
||||
<para>Determine if the use case will have
|
||||
consistent or highly variable latency.</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
<varlistentry>
|
||||
<term>Throughput</term>
|
||||
<listitem>
|
||||
<para>Throughput: Ensure that the storage solution
|
||||
<para>Ensure that the storage solution
|
||||
throughput is optimized based on application
|
||||
requirements.</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
<varlistentry>
|
||||
<term>Server hardware</term>
|
||||
<listitem>
|
||||
<para>Server Hardware: Use of DAS impacts the server
|
||||
<para>Use of DAS impacts the server
|
||||
hardware choice and affects host density, instance
|
||||
density, power density, OS-hypervisor, and management
|
||||
tools, to name a few.</para>
|
||||
</listitem>
|
||||
</itemizedlist>
|
||||
</varlistentry>
|
||||
</variablelist>
|
||||
<section xml:id="compute-server-hardware-selection">
|
||||
<title>Compute (server) hardware selection</title>
|
||||
<para>Compute (server) hardware must be evaluated against four
|
||||
opposing dimensions:</para>
|
||||
<itemizedlist>
|
||||
<variablelist>
|
||||
<varlistentry>
|
||||
<term>Server density</term>
|
||||
<listitem>
|
||||
<para>Server density: A measure of how many servers can
|
||||
<para>A measure of how many servers can
|
||||
fit into a given measure of physical space, such as a
|
||||
rack unit [U].</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
<varlistentry>
|
||||
<term>Resource capacity</term>
|
||||
<listitem>
|
||||
<para>Resource capacity: The number of CPU cores, how much
|
||||
<para>The number of CPU cores, how much
|
||||
RAM, or how much storage a given server will
|
||||
deliver.</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
<varlistentry>
|
||||
<term>Expandability</term>
|
||||
<listitem>
|
||||
<para>Expandability: The number of additional resources
|
||||
<para>The number of additional resources
|
||||
that can be added to a server before it has reached
|
||||
its limit.</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
<varlistentry>
|
||||
<term>Cost</term>
|
||||
<listitem>
|
||||
<para>Cost: The relative of the hardware weighted against
|
||||
<para>The relative of the hardware weighted against
|
||||
the level of design effort needed to build the
|
||||
system.</para>
|
||||
</listitem>
|
||||
</itemizedlist>
|
||||
</varlistentry>
|
||||
</variablelist>
|
||||
<para>The dimensions need to be weighed against each other to
|
||||
determine the best design for the desired purpose. For
|
||||
example, increasing server density can mean sacrificing
|
||||
@ -231,31 +269,40 @@
|
||||
<para>Other factors that will strongly influence server hardware
|
||||
selection for a storage-focused OpenStack design
|
||||
architecture:</para>
|
||||
<itemizedlist>
|
||||
<variablelist>
|
||||
<varlistentry>
|
||||
<term>Instance density</term>
|
||||
<listitem>
|
||||
<para>Instance density: In this architecture, instance
|
||||
<para>In this architecture, instance
|
||||
density and CPU-RAM oversubscription are lower. More
|
||||
hosts will be required to support the anticipated
|
||||
scale, especially if the design uses dual-socket
|
||||
hardware designs.</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
<varlistentry>
|
||||
<term>Host density</term>
|
||||
<listitem>
|
||||
<para>Host density: Another option to address the higher
|
||||
<para>Another option to address the higher
|
||||
host count is to use a quad socket platform. Taking
|
||||
this approach will decrease host density which also
|
||||
increases rack count. This configuration affects the
|
||||
number of power connections and also impacts network
|
||||
and cooling requirements.</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
<varlistentry>
|
||||
<term>Power and cooling density</term>
|
||||
<listitem>
|
||||
<para>Power and cooling density: The power and cooling
|
||||
<para>The power and cooling
|
||||
density requirements might be lower than with blade,
|
||||
sled, or 1U server designs due to lower host density
|
||||
(by using 2U, 3U or even 4U server designs). For data
|
||||
centers with older infrastructure, this might be a
|
||||
desirable feature.</para>
|
||||
</listitem>
|
||||
</itemizedlist>
|
||||
</varlistentry>
|
||||
</variablelist>
|
||||
<para>Storage-focused OpenStack design architecture server
|
||||
hardware selection should focus on a "scale up" versus "scale
|
||||
out" solution. The determination of which will be the best
|
||||
@ -267,17 +314,22 @@
|
||||
<title>Networking hardware selection</title>
|
||||
<para>Some of the key considerations that should be included in
|
||||
the selection of networking hardware include:</para>
|
||||
<itemizedlist>
|
||||
<variablelist>
|
||||
<varlistentry>
|
||||
<term>Port count</term>
|
||||
<listitem>
|
||||
<para>Port count: The user will require networking
|
||||
<para>The user will require networking
|
||||
hardware that has the requisite port count.</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
<varlistentry>
|
||||
<term>Port density</term>
|
||||
<listitem>
|
||||
<para>Port density: The network design will be affected by
|
||||
<para>The network design will be affected by
|
||||
the physical space that is required to provide the
|
||||
requisite port count. A switch that can provide 48 10
|
||||
GbE ports in 1U has a much higher port density than a
|
||||
switch that provides 24 10 GbE ports in 2U. On a
|
||||
requisite port count. A switch that can provide 48 10 GbE
|
||||
ports in 1U has a much higher port density than a
|
||||
switch that provides 24 10 GbE ports in 2U. On a
|
||||
general scale, a higher port density leaves more rack
|
||||
space for compute or storage components which is
|
||||
preferred. It is also important to consider fault
|
||||
@ -285,13 +337,19 @@
|
||||
switches are more expensive, therefore it is important
|
||||
not to over design the network.</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
<varlistentry>
|
||||
<term>Port speed</term>
|
||||
<listitem>
|
||||
<para>Port speed: The networking hardware must support the
|
||||
proposed network speed, for example: 1 GbE, 10 GbE, or
|
||||
40 GbE (or even 100 GbE).</para>
|
||||
<para>The networking hardware must support the
|
||||
proposed network speed, for example: 1 GbE, 10 GbE, or
|
||||
40 GbE (or even 100 GbE).</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
<varlistentry>
|
||||
<term>Redundancy</term>
|
||||
<listitem>
|
||||
<para>Redundancy: The level of network hardware redundancy
|
||||
<para>The level of network hardware redundancy
|
||||
required is influenced by the user requirements for
|
||||
high availability and cost considerations. Network
|
||||
redundancy can be achieved by adding redundant power
|
||||
@ -300,22 +358,30 @@
|
||||
User requirements will determine if a completely
|
||||
redundant network infrastructure is required.</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
<varlistentry>
|
||||
<term>Power requirements</term>
|
||||
<listitem>
|
||||
<para>Power requirements: Make sure that the physical data
|
||||
<para>Make sure that the physical data
|
||||
center provides the necessary power for the selected
|
||||
network hardware. This is not typically an issue for
|
||||
top of rack (ToR) switches, but may be an issue for
|
||||
spine switches in a leaf and spine fabric, or end of
|
||||
row (EoR) switches.</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
<varlistentry>
|
||||
<term>Protocol support</term>
|
||||
<listitem>
|
||||
<para>Protocol support: It is possible to gain even more
|
||||
<para>It is possible to gain even more
|
||||
performance out of a single storage system by using
|
||||
specialized network technologies such as RDMA, SRP,
|
||||
iSER and SCST. The specifics for using these
|
||||
technologies is beyond the scope of this book.</para>
|
||||
</listitem>
|
||||
</itemizedlist></section>
|
||||
</varlistentry>
|
||||
</variablelist>
|
||||
</section>
|
||||
<section xml:id="software-selection-arch-storage">
|
||||
<title>Software selection</title>
|
||||
<para>Selecting software to be included in a storage-focused
|
||||
@ -346,9 +412,11 @@
|
||||
support it.</para>
|
||||
<para>Some areas that could be impacted by the selection of OS and
|
||||
hypervisor include:</para>
|
||||
<itemizedlist>
|
||||
<variablelist>
|
||||
<varlistentry>
|
||||
<term>Cost</term>
|
||||
<listitem>
|
||||
<para>Cost: Selection of a commercially supported
|
||||
<para>Selection of a commercially supported
|
||||
hypervisor, such as Microsoft Hyper-V, will result in
|
||||
a different cost model rather than selected a
|
||||
community-supported open source hypervisor like
|
||||
@ -358,8 +426,11 @@
|
||||
requirements might dictate a specific or commercially
|
||||
supported hypervisor.</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
<varlistentry>
|
||||
<term>Supportability</term>
|
||||
<listitem>
|
||||
<para>Supportability: Whichever hypervisor is chosen, the
|
||||
<para>Whichever hypervisor is chosen, the
|
||||
staff needs to have appropriate training and knowledge
|
||||
to support the selected OS and hypervisor combination.
|
||||
If they do not training will need to be provided,
|
||||
@ -372,8 +443,11 @@
|
||||
resources. Either decision has a cost that will have
|
||||
an impact on the design.</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
<varlistentry>
|
||||
<term>Management tools</term>
|
||||
<listitem>
|
||||
<para>Management tools: The management tools used for
|
||||
<para>The management tools used for
|
||||
Ubuntu and Kinstance differ from the management tools
|
||||
for VMware vSphere. Although both OS and hypervisor
|
||||
combinations are supported by OpenStack, there will
|
||||
@ -381,16 +455,22 @@
|
||||
design as a result of the selection of one combination
|
||||
versus the other.</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
<varlistentry>
|
||||
<term>Scale and performance</term>
|
||||
<listitem>
|
||||
<para>Scale and performance: Make sure that selected OS
|
||||
<para>Make sure that selected OS
|
||||
and hypervisor combination meet the appropriate scale
|
||||
and performance requirements needed for this general
|
||||
purpose OpenStack cloud. The chosen architecture will
|
||||
need to meet the targeted instance-host ratios with
|
||||
the selected OS-hypervisor combination.</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
<varlistentry>
|
||||
<term>Security</term>
|
||||
<listitem>
|
||||
<para>Security: Make sure that the design can accommodate
|
||||
<para>Make sure that the design can accommodate
|
||||
the regular periodic installation of application
|
||||
security patches while maintaining the required
|
||||
workloads. The frequency of security patches for the
|
||||
@ -398,8 +478,11 @@
|
||||
on performance and the patch installation process
|
||||
could affect maintenance windows.</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
<varlistentry>
|
||||
<term>Supported features</term>
|
||||
<listitem>
|
||||
<para>Supported features: Determine what features of
|
||||
<para>Determine what features of
|
||||
OpenStack are required. This will often determine the
|
||||
selection of the OS-hypervisor combination. Certain
|
||||
features are only available with specific OSs or
|
||||
@ -407,8 +490,11 @@
|
||||
available, the design might need to be modified to
|
||||
meet the user requirements.</para>
|
||||
</listitem>
|
||||
</varlistentry>
|
||||
<varlistentry>
|
||||
<term>Interoperability</term>
|
||||
<listitem>
|
||||
<para>Interoperability: Consideration should be given to
|
||||
<para>Consideration should be given to
|
||||
the ability of the selected OS-hypervisor combination
|
||||
to interoperate or co-exist with other OS-hypervisors
|
||||
,or other software solutions in the overall design, if
|
||||
@ -419,7 +505,9 @@
|
||||
address if the two sets of tools need to interoperate.
|
||||
</para>
|
||||
</listitem>
|
||||
</itemizedlist></section>
|
||||
</varlistentry>
|
||||
</variablelist>
|
||||
</section>
|
||||
<section xml:id="openstack-components-arch-storage">
|
||||
<title>OpenStack components</title>
|
||||
<para>The selection of OpenStack components has a significant
|
||||
@ -439,36 +527,36 @@
|
||||
following components would typically be used:</para>
|
||||
<itemizedlist>
|
||||
<listitem>
|
||||
<para>Keystone</para>
|
||||
<para>OpenStack Identity (keystone)</para>
|
||||
</listitem>
|
||||
<listitem>
|
||||
<para>Horizon</para>
|
||||
<para>OpenStack dashboard (horizon)</para>
|
||||
</listitem>
|
||||
<listitem>
|
||||
<para>Nova (including the use of multiple hypervisor
|
||||
<para>OpenStack Compute (nova) (including the use of multiple hypervisor
|
||||
drivers)</para>
|
||||
</listitem>
|
||||
<listitem>
|
||||
<para>Swift (or another object storage solution)</para>
|
||||
<para>OpenStack Object Storage (swift) (or another object storage solution)</para>
|
||||
</listitem>
|
||||
<listitem>
|
||||
<para>Cinder</para>
|
||||
<para>OpenStack Block Storage (cinder)</para>
|
||||
</listitem>
|
||||
<listitem>
|
||||
<para>Glance</para>
|
||||
<para>OpenStack Image Service (glance)</para>
|
||||
</listitem>
|
||||
<listitem>
|
||||
<para>Neutron or nova-network</para>
|
||||
<para>OpenStack Networking (neutron) or nova-network</para>
|
||||
</listitem>
|
||||
</itemizedlist>
|
||||
<para>The exclusion of certain OpenStack components may limit or
|
||||
constrain the functionality of other components. If a design
|
||||
opts to include Heat but exclude Ceilometer, then the design
|
||||
will not be able to take advantage of Heat's auto scaling
|
||||
functionality (which relies on information from Ceilometer).
|
||||
Due to the fact that you can use Heat to spin up a large
|
||||
opts to include Orchestration but exclude Telemetry, then the design
|
||||
will not be able to take advantage of Orchestration's auto scaling
|
||||
functionality (which relies on information from Telemetry).
|
||||
Due to the fact that you can use Orchestration to spin up a large
|
||||
number of instances to perform the compute-intensive
|
||||
processing, including Heat in a compute-focused architecture
|
||||
processing, including Orchestration in a compute-focused architecture
|
||||
design is strongly recommended.</para></section>
|
||||
<section xml:id="supplemental-software-arch-storage">
|
||||
<title>Supplemental software</title>
|
||||
@ -478,18 +566,21 @@
|
||||
any given OpenStack design.</para></section>
|
||||
<section xml:id="networking-software-arch-storage">
|
||||
<title>Networking software</title>
|
||||
<para>OpenStack Neutron provides a wide variety of networking
|
||||
<para>OpenStack Networking (neutron) provides a wide variety of networking
|
||||
services for instances. There are many additional networking
|
||||
software packages that may be useful to manage the OpenStack
|
||||
components themselves. Some examples include HAProxy,
|
||||
keepalived, and various routing daemons (like Quagga). Some of
|
||||
these software packages, HAProxy in particular, are described
|
||||
in more detail in the OpenStack HA Guide (refer to Chapter 8
|
||||
of the OpenStack High Availability Guide). For a general
|
||||
purpose OpenStack cloud, it is reasonably likely that the
|
||||
OpenStack infrastructure components will need to be highly
|
||||
available, and therefore networking software packages like
|
||||
HAProxy will need to be included.</para></section>
|
||||
in more detail in the <citetitle>OpenStack High Availability
|
||||
Guide</citetitle> (refer to the <link
|
||||
xlink:href="http://docs.openstack.org/high-availability-guide/content/ch-network.html">Network
|
||||
controller cluster stack chapter</link> of the OpenStack High
|
||||
Availability Guide). For a general purpose OpenStack cloud, it
|
||||
is reasonably likely that the OpenStack infrastructure
|
||||
components will need to be highly available, and therefore
|
||||
networking software packages like HAProxy will need to be
|
||||
included.</para></section>
|
||||
<section xml:id="management-software-arch-storage">
|
||||
<title>Management software</title>
|
||||
<para>This includes software for providing clustering, logging,
|
||||
@ -504,8 +595,8 @@
|
||||
Therefore, the impact of including (or not including) these
|
||||
software packages is determined by the availability of the
|
||||
cloud infrastructure and the complexity of supporting the
|
||||
configuration after it is deployed. The OpenStack High
|
||||
Availability Guide provides more details on the installation
|
||||
configuration after it is deployed. The <citetitle>OpenStack High
|
||||
Availability Guide</citetitle> provides more details on the installation
|
||||
and configuration of Corosync and Pacemaker, should these
|
||||
packages need to be included in the design.</para>
|
||||
<para>Requirements for logging, monitoring, and alerting are
|
||||
@ -526,7 +617,7 @@
|
||||
design impacts include:</para>
|
||||
<itemizedlist>
|
||||
<listitem>
|
||||
<para>OS - Hypervisor combination: Ensure that the
|
||||
<para>OS-Hypervisor combination: Ensure that the
|
||||
selected logging, monitoring, or alerting tools
|
||||
support the proposed OS-hypervisor combination.</para>
|
||||
</listitem>
|
||||
@ -545,7 +636,7 @@
|
||||
of the OpenStack services.</para>
|
||||
<para>MySQL is generally considered to be the de facto database
|
||||
for OpenStack, however, other compatible databases are also
|
||||
known to work. Note, however, that Ceilometer uses
|
||||
known to work. Note, however, that Telemetry uses
|
||||
MongoDB.</para>
|
||||
<para>The solution selected to provide high availability for the
|
||||
database will change based on the selected database. If MySQL
|
||||
@ -570,4 +661,6 @@
|
||||
components might require it depending on the specific
|
||||
implementation.</para>
|
||||
</listitem>
|
||||
</itemizedlist></section></section>
|
||||
</itemizedlist>
|
||||
</section>
|
||||
</section>
|
||||
|
||||
@ -58,13 +58,16 @@
|
||||
other locations for the same reason.</para>
|
||||
</listitem>
|
||||
</itemizedlist>
|
||||
<para>Examples of such legal frameworks include the data
|
||||
protection framework of the European Union
|
||||
(http://ec.europa.eu/justice/data-protection/ ) and the
|
||||
requirements of the Financial Industry Regulatory Authority
|
||||
(http://www.finra.org/Industry/Regulation/FINRARules/ ) in the
|
||||
United States. Consult a local regulatory body for more
|
||||
information.</para></section>
|
||||
<para>
|
||||
Examples of such legal frameworks include the <link
|
||||
xlink:href="http://ec.europa.eu/justice/data-protection/">data
|
||||
protection framework</link> of the European Union and the
|
||||
requirements of the <link
|
||||
xlink:href="http://www.finra.org/Industry/Regulation/FINRARules/">Financial
|
||||
Industry Regulatory Authority</link> in the United
|
||||
States. Consult a local regulatory body for more information.
|
||||
</para>
|
||||
</section>
|
||||
<section xml:id="technical-requirements-storage-focus">
|
||||
<title>Technical requirements</title>
|
||||
<para>The following are some technical requirements that could be
|
||||
|
||||
Loading…
Reference in New Issue
Block a user