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<DIV><FONT color=#000000 face=宋体>Hi,Biro</FONT></DIV>
<DIV><FONT face=宋体></FONT> </DIV>
<DIV><FONT face=宋体>You raised many questions. Some are openNebula specific
and others seems general to all cloud
computing environments. </FONT></DIV>
<DIV><FONT face=宋体></FONT> </DIV>
<DIV><FONT face=宋体>
<LI>>As I understand so far, OpenNebula has two types of users: the
administrator, who >basically has control over "everything", and the users,
who can authenticate >securely, instantiate some VM's, and do the work
necessary for them. My question: can >OpenNebula have another "layer" of
users, some kind of "end-users"? What I mean is: >suppose I, as a user of
OpenNebula, using my created VM's, create a Web Service, >which I publish on
the Internet. Can anyone access this (someone who has no idea >about the
private cloud, someone who is simply accessing the URL), and by this way
>uses my Web Service (created on the VM's by the means of OpenNebula), so,
basically, >uses OpenNebula "remotely" (without knowing it)? Or this just
doesn't make sense, >since the whole idea of a private cloud is not to
provide/publish information and >services to the outside world, and this is
not even possible since the virtual >context?</LI></DIV>
<DIV> </DIV>
<DIV>To my understanding, this is a general question for all clouds. A cloud
must have users to manage and maintain the cloud itself(cloud infrastructure),
such users ard administrators. A cloud should also have cloud customers to which
the cloud provide services(e.g. VMs, storages). Such users are cloud users who
can login into the cloud and use cloud provided resources. The last kind of
users are application users who are the customers of your applications.
OpenNebula cann't know such users in advance, so it doesn't provide any
mechanism to support this kinds of users.</DIV>
<DIV>(These are just my personal understanding!)</DIV>
<DIV> </DIV>
<DIV> </DIV></FONT>
<DIV><FONT face=宋体>>Are the most important reasons for installing OpenNebula
the performance needs? Is >there any other reason because of which I may want
to install it, besides the fact >that I might need multiple VM's (that I can
manage) to perform a task (and to achieve >platform interoperability)? I mean
this has be the main point of it, right?</FONT></DIV>
<DIV><FONT face=宋体></FONT> </DIV>
<DIV><FONT face=宋体>The main reason for using cloud is have many characters:
on-demond self service, improving physical server utilization and so on. you can
refer to this cloud definition to have a deeper understanding:</FONT></DIV>
<DIV><FONT face=宋体><SPAN
style="FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 12pt; mso-fareast-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"
lang=EN-US><A
href="http://csrc.nist.gov/groups/SNS/cloud-computing/index.html">http://csrc.nist.gov/groups/SNS/cloud-computing/index.html</A>
</SPAN></FONT></DIV>
<DIV><FONT face=宋体><SPAN
style="FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 12pt; mso-fareast-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"
lang=EN-US></SPAN></FONT> </DIV>
<DIV><FONT face=宋体><SPAN
style="FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 12pt; mso-fareast-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"
lang=EN-US>>When the load reaches its maximum (on a task which a user tries
to perform on OpenNebula VM's), are new >VM's created automatically (it the
physical resources allow this) to support the performace needs? Or the only
>way of creating VM's is the "manual" one?</SPAN></FONT></DIV>
<DIV><FONT face=宋体><SPAN
style="FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 12pt; mso-fareast-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"
lang=EN-US></SPAN></FONT> </DIV>
<DIV><FONT face=宋体><SPAN
style="FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 12pt; mso-fareast-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"
lang=EN-US>untial now, OpenNebula can't do such job automatically, but you may
implement such function based on it. (in fact Amazon EC2 have implemented such
functions).</SPAN></FONT></DIV>
<DIV><FONT face=宋体><SPAN
style="FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 12pt; mso-fareast-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"
lang=EN-US></SPAN></FONT> </DIV>
<DIV><FONT face=宋体><SPAN
style="FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 12pt; mso-fareast-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"
lang=EN-US></SPAN></FONT> </DIV>
<DIV><FONT face=宋体><SPAN
style="FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 12pt; mso-fareast-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"
lang=EN-US>>Can OpenNebula be installed on any type of physical network, or
does it have some special needs? Suppose I >have an intranet in a company
environment, with more interconnected physical machine that I'm actually going
to >use, does this change anything? Do I have to set up a separate physical
network for the physical machines that I>'m planning to include in the
private cloud?</SPAN></FONT></DIV>
<DIV><FONT face=宋体><SPAN
style="FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 12pt; mso-fareast-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"
lang=EN-US></SPAN></FONT> </DIV>
<DIV><FONT face=宋体><SPAN
style="FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 12pt; mso-fareast-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"
lang=EN-US>OpenNebula can installed smothly to ethernet physical networks
(I am not sure exactly about other types of network).</SPAN></FONT></DIV>
<DIV><FONT face=宋体><SPAN
style="FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 12pt; mso-fareast-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"
lang=EN-US></SPAN></FONT> </DIV>
<DIV><FONT face=宋体><SPAN
style="FONT-FAMILY: 'Times New Roman','serif'; FONT-SIZE: 12pt; mso-fareast-font-family: 宋体; mso-ansi-language: EN-US; mso-fareast-language: ZH-CN; mso-bidi-language: AR-SA"
lang=EN-US></SPAN></FONT> </DIV>
<DIV><FONT color=#000000 face=宋体>Sha</FONT></DIV>
<DIV align=left><FONT color=#c0c0c0 size=2
face=Verdana>2011-12-15</FONT></DIV><FONT size=2 face=Verdana>
<DIV>
<HR style="WIDTH: 122px; HEIGHT: 2px" align=left SIZE=2>
</DIV>
<DIV><FONT color=#c0c0c0 size=2 face=Verdana><SPAN
id=_FlashSignName>shamaya</SPAN></FONT></DIV></FONT>
<DIV>
<HR>
</DIV>
<DIV>发件人: biro lehel <lehel.biro@yahoo.com></DIV>
<DIV>发送时间: 2011-12-15 16:54</DIV>
<DIV>主 题: Re: [one-users] application integration (service publishing) in
OpenNebula?</DIV>
<DIV>收件人: users@lists.opennebula.org</DIV>
<DIV><BR><BR></DIV>
<DIV>
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<TR>
<TD vAlign=top>Hello Fabian. Thanks again for your reply. I really
appreciate you for taking the time.<BR><BR>I read what you wrote a couple
of times, and (I think) it helped me to clarify some things. But still, I
have a few questions and issues for which I am looking for a clear answer.
I put them in bullets:<BR><BR>
<UL>
<LI>As I understand so far, OpenNebula has two types of users: the
administrator, who basically has control over "everything", and the
users, who can authenticate securely, instantiate some VM's, and do the
work necessary for them. My question: can OpenNebula have another
"layer" of users, some kind of "end-users"? What I mean is: suppose I,
as a user of OpenNebula, using my created VM's, create a Web Service,
which I publish on the Internet. Can anyone access this (someone who has
no idea about the private cloud, someone who is simply accessing the
URL), and by this way uses my Web Service (created on the VM's by the
means of OpenNebula), so, basically, uses OpenNebula "remotely" (without
knowing it)? Or this just doesn't make sense, since the whole idea of a
private cloud is not to provide/publish information and services to the
outside world, and this is not even possible since the virtual context?
<LI>Are the most important reasons for installing OpenNebula the
performance needs? Is there any other reason because of which I may want
to install it, besides the fact that I might need multiple VM's (that I
can manage) to perform a task (and to achieve platform
interoperability)? I mean this has be the main point of it, right?
<LI>When the load reaches its maximum (on a task which a user tries to
perform on OpenNebula VM's), are new VM's created automatically (it the
physical resources allow this) to support the performace needs? Or the
only way of creating VM's is the "manual" one?
<LI>Can OpenNebula be installed on any type of physical network, or does
it have some special needs? Suppose I have an intranet in a company
environment, with more interconnected physical machine that I'm actually
going to use, does this change anything? Do I have to set up a separate
physical network for the physical machines that I'm planning to include
in the private cloud?<BR></LI></UL><BR><BR>That's it for now, I don't want
to ask for too much information all at once.:) I really hope that these
questions are easy-to-answer for a professional, and will not take much
time (for you Fabian, or for anyone else who thinks that can help
me).<BR><BR>Thank you, and waiting for your response,<BR>Biro
Lehel.<BR><BR><BR>--- On <B>Sun, 12/11/11, Fabian Wenk
<I><fabian@wenks.ch></I></B> wrote:<BR>
<BLOCKQUOTE
style="BORDER-LEFT: rgb(16,16,255) 2px solid; PADDING-LEFT: 5px; MARGIN-LEFT: 5px"><BR>From:
Fabian Wenk <fabian@wenks.ch><BR>Subject: Re: [one-users]
application integration (service publishing) in OpenNebula?<BR>To:
users@lists.opennebula.org<BR>Date: Sunday, December 11, 2011, 7:04
PM<BR><BR>
<DIV class=plainMail>Hello Lehel<BR><BR>On 11.12.2011 14:33, biro lehel
wrote:<BR>> what I've been referring to. I will have OpenNebula set
up,<BR>> and (as common sense would tell) I will have my
application<BR>> installed on the created VM's. My question only
referred to:<BR>> how can I install an application on these VM's
(should I only<BR>> just copy it, or is it more complex than this),
or stuff like:<BR><BR>Look at the VM like at any other physical
computer. It is just a container (eg. a virtual computer) where you can
install the OS of your choice. The installation of your application
inside the OS of your VM needs to be done the same as you would do it on
a physical computer. But the installation of the OS in the VM needs to
be done first. See my recent posting "Re: Creating virtual machines from
scratch" [1] to this mailing list.<BR><BR> [1] <A
href="http://lists.opennebula.org/pipermail/users-opennebula.org/2011-December/007156.html"
target=_blank>http://lists.opennebula.org/pipermail/users-opennebula.org/2011-December/007156.html</A><BR><BR>Look
at an OpenNeubla cluster / cloud like on an additional abstraction layer
between a physical computer and your OS installation.<BR><BR>An
example:<BR>If you have 3 computers, you can install on each one the OS
of your choice and run it, but then you have only 3 concurrent running
OS installation available. With OpenNebula you need to install Linux on
all 3 computers (1x front-end and 2x cluster nodes). The cluster nodes
also need to support some kind of hypervisor (eg. KVM or XEN). Then you
install OpenNebula on the front-end and then adjust the configuration
for the shared file systems to be used by the cluster nodes. Then you
can create VMs (virtual machines / virtual computers) and deploy them
through the front-end (with Sunstone you also have a web GUI). Now you
can create as many VMs as the two cluster nodes can support (depending
on CPU power an available memory). You even can stop or terminate VMs
and reuse them (with persistent image) at a later time.<BR><BR>> can
the different tiers of the application (interface,<BR>> business
logic, and data repository) be on different VM's, but<BR><BR>Sure, they
can.<BR><BR>> most importantly: how can an end-user (not the
administrator,<BR>> but a potencial client) use the application? Or
there is no<BR>> such thing as the "end-user / client" concept in
OpenNebula,<BR>> since the only user is the administrator who has
control over<BR>> the infrastructure? If OpenNebula provides IaaS
support, I<BR><BR>In OpenNebula the administrator has full control over
the running VMs, eg. he can stop (pause), resume or even shutdown /
destroy them. OpenNebula also knows users, which eg. could create their
own VMs (with their choice of OS installation) or can use pre-created
shared system image to boot a VM. But as far as I know, out of the box
OpenNebula is not able to provide virtualization on application level.
But it has a very open and flexible design and you should be able to
customize it to your needs, eg. with contextualization.<BR><BR>>
suppose this means that he does not have control over the<BR>>
application only as a service, but rather he, as the admin,<BR>> has
control over the whole "physical" application?<BR><BR>What do you
understand as "physical" application?<BR><BR>OpenNebula controls the
distribution and monitoring of the VMs. It will place a newly created VM
on a cluster node which has the requested requirements and resources
available. It also manages all the system images (persistent and public
/ shared) and network interfaces (done through bridges) which the VMs
need to
run.<BR><BR><BR>bye<BR>Fabian<BR>_______________________________________________<BR>Users
mailing list<BR><A href="/mc/compose?to=Users@lists.opennebula.org"
ymailto="mailto:Users@lists.opennebula.org">Users@lists.opennebula.org</A><BR><A
href="http://lists.opennebula.org/listinfo.cgi/users-opennebula.org"
target=_blank>http://lists.opennebula.org/listinfo.cgi/users-opennebula.org</A><BR></DIV></BLOCKQUOTE></TD></TR></TBODY></TABLE></DIV></STATIONERY></BODY></HTML>