Cloud computing is the delivery of computing as a service rather than a product, whereby shared resources, software, and information are provided to computers and other devices as a utility (like the electricity grid) over a network (typically the Internet)

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-5
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2answers
67 views

What level of email security in cloud is sufficient to protect from tampering

I setup cloud server with encrypted volumes, I installed mail server with SMTP and IMAP, I allow only SSL connections (the latest TLS). I was wondering if this configuration will prevent from others ...
3
votes
2answers
641 views

How does a geographically distributed web app handle stored data?

Hypothetically... I log in to a web app from Australia and change some data. In the US my colleague is using the same system and wants to view the data I've changed. How could the web app be deployed ...
-2
votes
1answer
50 views

Densely packed Xeon 5400 processors [closed]

I'm doing lots of data crunching in a private cloud. I really like the price point of the Intel Xeon 5420 processor so I would like to run as many of these as possible. I have some running in ...
2
votes
1answer
373 views

Use CloudInit cloud-config file to add authorized_keys for multiple users

Is it possible to add ssh authorized keys for multiple users using a #cloud-config file with CloudInit? I'm trying to initialize a new EC2 instance created from an Amazon Linux AMI using CloudInit. ...
0
votes
2answers
54 views

What's the difference between scaling memory and scaling instances in cloud hosting?

I've been playing around with a free account on appfog.com and this question came to mind. What's the difference between scaling memory and scaling instances? For example, what is the real world ...
-3
votes
1answer
128 views

How much RAM and CPU throughput can handle 20GE in Cloud? [closed]

We're going to build a cloud infrastructure and would like to use the HP DL160 G8 with a 20GE NIC (2x10GE LACP). How much RAM and CPU can handle this NIC? The server will have at least 2x Intel ...
0
votes
1answer
150 views

First-time Developer's Basic Cloud & Node.js Questions

I'm trying to get a handle on the concepts and best practices of cloud development with Node.js, because I haven't found a good explanation. When you buy a virtual machine from Rackspace or ...
9
votes
3answers
5k views

Issues with EC2 Elastic Load Balancer DNS and routing

We're trying to run a fairly straightforward setup on Amazon EC2 - several HTTP servers sitting behind an Amazon Elastic Load Balancer (ELB). Our domain is managed in Route53, and we have a CNAME ...
1
vote
1answer
282 views

Thin clients over WAN - Capacity planning [duplicate]

Possible Duplicate: Can you help me with my capacity planning? How reliable is it to run thin clients such as Citrix XenDesktop over the WAN. I am designing an IT solution where the client ...
0
votes
2answers
42 views

servers pool synchronization an management for serving videos [closed]

I would like to serve videos from a pool of servers and have a minimum of 2 copy of each to prevent server crash and lose data. The goal is to have a kind of cloud where I can add as many server as I ...
-1
votes
1answer
106 views

Which hardware gives us better redundancy, performance, and cost efficiency for a large Enterprise Cloud Solution? [closed]

We are going to build a Large Enterprise Cloud Solution and would like to know in which configuration we would have a better redundancy/performance and cost efficient. Here are 2 examples which we're ...
-1
votes
1answer
306 views

On-premise VMware vSphere vs Amazon VPC for small business [closed]

Background I have been managing all the IT for a small business (owned by a family member) of ~5 users for about 10 years. Since about 2 years the infrastructure is 100% virtual running on VMware ...
0
votes
3answers
122 views

Provider claiming “all web servers in the cloud are automatically kept in sync” - should I be skeptical?

I'm no expert in cloud computing - I've spent a fair bit of time researching it and various providers but am yet to get any hands-on experience with it. From what I've read about AWS and auto-scaling ...
4
votes
2answers
90 views

Letting users make their own dns changes? Any software available to manage this tricky situation?

I currently waste a lot of time making dns changes for my organization. DDNS of course helps for workstations, but we still have a few thousand unique servers with still more applications needing ...
0
votes
1answer
126 views

How do projects manage chef cookbooks when multiple teams manage multiple sets of cookbooks?

I am wondering how projects that have multiple component teams manage their sets of cookbooks? We are trying to figure out how we can have an ops team provide a set of "common component" cookbooks ...
2
votes
5answers
332 views

Master - Slave MySQL setup on a VMWare Cloud — Is it needed?

We currently are in the research phase of building a "Master" database for our e-commerce business that will centralize all data, including product information, vendor information, Magento ...
3
votes
1answer
159 views

Monitoring E-Mail Alerts Scalably

Anyone know of a way to monitor e-mail alerts scalably? For many of my on site services I have them e-mail me on success (and failure) of critical tasks. The reason I have it e-mail on success, is ...
1
vote
2answers
76 views

Experienced Lagging Issue on 2 x 2 MBps E1 link

From client pc to server (Windows Server 2008), the WAN connection is using 2 x 2 MBps E1 link. 1 <1ms <1ms <1ms 10.101.7.254 2 4ms 15ms 4ms ...
0
votes
1answer
170 views

Guaranteed HTTP forwarding frontend service (reliable cloud load balancer) [closed]

My situation is fairly simple and, I guess, it's encountered fairly often. I have several projects which all look pretty much the same - a single project consists of: Static content servers - there ...
0
votes
1answer
74 views

Swap files in Cloud Infrastructures

At our company we set up an OpenStack Cloud and are currently creating internal guidelines for creation of OS templates / images. One controversial topic was if we should provide swap inside the VM ...
3
votes
1answer
1k views

Migrating to AWS Cloud with auto-scaling - where to put Redis and ElasticSearch?

I've been trying to research this topic but haven't found anywhere that recommends where to install services such as Redis and ElasticSearch when migrating to a cloud framework. I'm currently running ...
0
votes
1answer
165 views

unable to login in stackops [closed]

I have new installation of stackops distribution. When I tried logging into the stackops portal with user information "head/stackops"(as described in the documentation) , but it says "invalid user". ...
-6
votes
1answer
105 views

Newsletter Emails Sent + Write-back = Very high IOPS [closed]

Here's the scenario. We create a campaign in our database of email addresses ( around 200K emails per campaign). We send 4 such campaigns (newsletters) daily. The emails are such that a lot of users ...
8
votes
4answers
343 views

What's the exact technical difference between a public and private cloud?

I'm trying to figure out for a while now what the exact technical difference is between a public and a private cloud. I'd think I could find an article that describes exactly how it works, but so far ...
4
votes
1answer
446 views

How do I register only internal NIC address in AD DNS, with servers with multiple NICs?

I'm hosting some Windows servers on Rackspace, and have added them to a domain. Each server has two NICs, a public and private NIC. The public NIC has a public IPv4 and IPv6 address, while the private ...
1
vote
1answer
112 views

How can I set up a load balancer to direct all Search Engine Bot traffic to one server?

We have a simple load balancer set up on Rackspace to 3 web server nodes. After reviewing our traffic and expenses, the largest bandwidth hog is Google Bot. Since on Rackspace we pay for bandwidth ...
2
votes
2answers
72 views

Application-transparent encryption among cloud-deployed servers

I'm a software engineer and not necessarily an ops guy aside from having done a developer's share of dealing with deployment issues. The individual components of the web app I'm working on will be ...
14
votes
4answers
1k views

How to distribute torrent files?

I am doing some distributed work with RackSpace cloud servers and I am using bittorrent to distribute my files. It works surprisingly well. However, distributing the torrent files themselves are not ...
3
votes
1answer
540 views

Automatically monitor new cloud servers using Open Monitoring Distro (OMD)?

I've been spending some time getting my head around using Nagios, Check_mk and some other very useful tools installed as part of the OMD package. WATO is especially useful for administrating all of ...
6
votes
2answers
617 views

Creating a pseudoterminal to make sudo happy

I need to automate the provisioning of a cloud instance (running Fedora 17) for which the following initial facts are true: I have ssh-key based access to a remote user (cloud) That user has ...
1
vote
1answer
412 views

Serving multiple SSL Websites from a limited number of IPs using load balancers?

We currently host multiple sitecore sites on a rackspace cloud server, we have 5 sites, with 5 IPs and with 5 SSLs. Because rackspace will only allow 4 additional IPv4 addresses on a box we're at the ...
3
votes
2answers
592 views

Monitoring AWS Systems Behind ElasticBeanStalk

So I'm getting a company set up in the Amazon Cloud -- creating IAAS protocol/solutions/standardized implementation, etc while also being the SysAdmin for individual systems, app environments, and ...
2
votes
2answers
632 views

Cloudstack missing templates

I have installed several templates in cloudstack and I can see them in TEMPLATES module of management. But when I try to add an instance all the templates are missing. Did anyone experienced the same ...
2
votes
1answer
109 views

Performance issue in using Amazon S3 for run-time updates

I have a web application hosted in Amazon EC2 as well as in Rackspace. Users can upload files through this application and also modify them. Those files are stored in local storage in each of these ...
1
vote
2answers
254 views

Steal time in KVM reported as 0

I am trying to get the steal time with 2 VMs (each with 1 Vcpu) pinned to same core. I run the same application on these 2 VMs simultaneously and see the performance difference. I am trying to read ...
0
votes
3answers
74 views

Letting tenants host their own data [closed]

We are developing a web app and planning to deploy it in a multi-tenant model. However, some of our potential customers are having a great deal of discomfort with the idea of not having the control ...
1
vote
3answers
162 views

How to make a vm scale when demand for resource increases

i am having a server with 16 virtual core and 24G RAM,using Xen virtualization and ubuntu as dom0 Created 4 VMs (in para mode),each with different applications. CPU Load vary on each vm,somtimes ...
1
vote
0answers
148 views

Can you set up a private Azure-like “web/worker role” PaaS cloud on-premises with Microsoft technology?

It's so hard to google for the answer to this question because I get a bagillion hits about using Azure and hints that PaaS is supported for private data centers, but no concrete information. I'm ...
1
vote
1answer
273 views

Running OpenShift Origin directly on hardware?

To anyone with OpenShift Origin experience, is there any benefit in skipping any IaaS infrastructure (like OpenStack), and installing the PaaS layer right on top of hardware? What would be the ...
1
vote
1answer
151 views

Does no output from euca-describe-images mean I'm not connected to the Eucalyptus cloud?

I am trying to setup a Eucalyptus cloud. While using the euca-describe-images, I do not get any output. Does this mean it is not connected to the Eucalyptus cloud or am I doing something wrong ? The ...
-3
votes
1answer
129 views

Azure Linux Virtual Machines Price per Hour, Computation or Running? [closed]

first of all, I couldn't find a StackExchange site on Cloud Computing. I think this is the most appropriate site, because some of you might be using Azure. So I just wanted to know: The Windows Azure ...
0
votes
1answer
93 views

Application to monitor traffic spikes on cloud server?

I was wondering if anybody knew of any software (preferably free if possible) that monitors server traffic for spikes? Something that, say, might send out notifications via email or anything for that ...
1
vote
4answers
215 views

How can a cloud be created from virtualization or how is it different from virtualization?

I have heard that virtualization is the basis of Cloud,so If i have a machine with xen as virtualizing environment and many vms running on it,then can that be called as a cloud. Is it true that vms ...
-4
votes
2answers
65 views

Does cloud computing offer this? [closed]

I have some newb questions I want answering please about cloud hosting - we are currently looking at Rackspace and getting a windows box. This is the situation: We have 15 computers in our office. ...
1
vote
1answer
913 views

why i cannot run screen command on openshift?

i am using redhat openshift, and find some problems now: a) why default screen can not support path which contains too much characters [xxname-xxname.rhcloud.com ~]\> which screen /usr/bin/screen ...
-1
votes
2answers
299 views

Amazon - install a complete server on EBS

is it possible to install a full working OS with a webserver, db, and all needed stuff on an EBS storage? If so, would I immediatly gain benefits by mounting this EBS on a better instance? Otherwise ...
1
vote
1answer
674 views

Possible to setup OpenVPN between two servers? And how?

Apologies if this is a FAQ but I did not find it in the answers, hence, I'm positing it here. I have a following scenario and I am curious how can I use OpenVPN-(AS) to solve my issue. I have two ...
1
vote
1answer
650 views

KVM Windows Guest Vlan Tagging

Right now, I'm trying a new cloud provider which facilitates private networking, this is a feature on which you can run multiple vlan's. Because the platform that we are going to build is a ...
3
votes
1answer
757 views

SCOM vs. Windows System Center vs. HP Operations Manager

(I asked this question over on Stack Overflow and they sent me here. Sorry for the very basic question, but I have purely coding experience - no server management stuff at all - and this is ...
2
votes
2answers
426 views

Cannot connect to Windows Azure virtual network with netgear router

Has anyone sucessfully connected to a Windows Azure Virtual network using a Netgear router? I am attempting to connect to a Windows Azure virtual network using a Netgear FVS318G VPN firewall router. ...