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Re: Re: [Xen-users] constuct saas with xcp+hadoop

To: 59497363 <59497363@xxxxxx>, xenList <xen-users@xxxxxxxxxxxxxxxxxxx>
Subject: Re: Re: [Xen-users] constuct saas with xcp+hadoop
From: Henrik Andersson <henrik.j.andersson@xxxxxxxxx>
Date: Sat, 30 Jul 2011 16:34:58 +0300
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2011/7/30 59497363 <59497363@xxxxxx>
thanks for you advice very much.  
     your mean is that: in order to construct the saas, in additon to the xcp(olny a tool  provided the management the cloud plantform), we should use a number of others tools to manage the cloud platform such as openstack, XenCenter,vpn,  envn include the tools for backup's, disaster recovery etc.

well I didn't actually say that. I said you could use some of those or other tools to manage xcp. You could ofcourse (very bad idea, extremely bad idea) also have your xcp machines management interface on a public internet, ssh in and use command line tools. OR you could have VM that you ssh into and then use ssh from there to reach your dom0 machines. OR you could have vpn you log into that provides you access to the private management network. See where I'm going with this? There are plenty of ways to achieve the same thing. Many of them are dangerous done wrong. 

Backup's are not obsolete because of cloud. If you want to be deploy any application resposibly, you need to have some kind of strategy for the backups. "cloud" doesn't change this in any way, atleast that's what I think. 
    but i had read  the xcp adminstator guid, we can manage the cloud platfrom to complete the vast majority of the function you hava tallde above  by using the xco command line tools
     weather we need other tools? or they are olny aided tools?

You can use command line tools to manage xcp cluster, but many times it is more convenient to provide some sort of web interface. Would you for example give your customers root access to your dom0, so that he can manage his own virtual machines? I'm not saying that it would even be needed in your scenario, it was just an example.
and my further question is: how to access my windows os in the vm in the resouce pool of the xcp,   the access means: using the matlab  of the windows os, visual studion 2008  of the windwos etc.
     using the virtual desktop technology can solve my question?

Well some of the tools that provide you the ability to create, copy, clone, move, start, stop and so on, provide you concole access. For example xenCenter includes vnc client. Or you could have vnc (or some other) server running on the windows VM. I haven't done any desktop virtualisation, so I'm not the best person to give you more instructions on that.



发件人: Henrik Andersson
发送时间: 2011-07-30  12:12:30
收件人: 59497363
抄送: xen-users; Samuli Samuli
主题: Re: [Xen-users] constuct saas with xcp+hadoop

2011/7/26 59497363 <59497363@xxxxxx>
hi, everybody
     i want construct the saas of cloud computing with xcp+hadoop,  that's ok?

Ok by me, tho I think you should really familiarize your self with XCP and whole concept of cloud computing before deploying anything, just a suggestion.  Just saying this because there is no install xcp, do this, do that and now you are on your way providing reliable cloud platform for your customers. Well, I quess there are "do this and do that" (plenty of do that's) and after that you are done, like in anything that can be done but if there actually is some kind of universal easy to deliver how-to for cloud platform, I've yet to come in contact with it. 

if it's ok, then how to do it? the installation step like the folloing? :install  linux, then install hadoop, at last install the xcp?

I think it's ok, but I doubt that there will ever be answer to your question that actually would help you. Well, actually what Todd said is answer to your question, but I doubt that you are any closer to your SaaS goal. One could and many propably have written books about individual components of "cloud", so it would be really hard to answer your question. 

What I'm trying to say is, that XCP is just one component of the "cloud platform". Besides having computer nodes availeable for your virtual machines, you need a shared storage (iscsi, nfs, etc.) if you plan to be able to move live instances and do pretty much all the "cloud stuff" with XCP. 

And just to clarify, XCP it self isn't and doesn't contain the fancy web page you can access using your favourite browser to create virtual machines and manage them. You need some sort of tool to do that also. You could have openstack manage your XCP cluster(s), you could have vpn access to your management network and use XenCenter to manage the instances, you could have some web interface that you your self developed or many other options.

And we haven't even touched networking, backup's, disaster recovery, scaling and those easy and hard to predict problems that are always going to be there, when you are combining such a huge amount of different technologies.

This is not to say that it can't be done or that you couldn't do it. I'm just saying that I would be really impressed if some one could answer your question with a simple posting.

    thanks for any advice

Hope something I said helps. 


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