Hi, I have a created a sample web role application using cloud service. Before hosting my application in cloud, i want to test the application in dev fabric. I am sure that when we run the application from VS, it creates an environment that simulates the cloud. But if i want to give my application for testing to QA, do i still need t...
Hi, I have developed a cloud application with one Webrole and a WCF role. My WCF service will act as model and gets me the data from the database. I am able get the Service Referece of my WCF service in my webrole when it running either in localhost or from IIS. But when i run my webrole and wcf service in Dev Fabric, i am unable to t...
I am using Boto library to write scripts for automating our jobs on AWS. My script actually starts a hadoop cluster using cloudera scripts and then does some customization. I am having a problem with retries. Seems like very command in my script fails once couple of days. I started adding retry to all the commands, but then the code is v...
We are running Hadoop on Amazon EC2 cluster. We start the master, slaves and attach the ebs volumes and finally waiting for hadoop jobtracker, tasktracker etc to start and we have timeout of 3600 seconds. We are noticing 50% of the time that job tracker is not able to start before the timeout. Reason being, hdfs is not initialized proper...
I need a demo application to demonstrate about Windows Azure Platform. I tried myTODO project , but because it's not updated since Aug/2009, it cannot work properly (even after installing and configuring all needed components) . Very appreciated if you can suggest me an open-source, free project build for Windows Azure Platform, which ...
I am starting a web app considering scalability as one of the top priorities. What would be the benefits of this: cassandra scala lift vs the traditional LAMP on the cloud? Since from what I've read, please correct me, the cloud itself is scalable I have never seen anyone deploy scala on the cloud before. Is it worth the effort to lear...
The code below only prints one instance id per instance even though I'm running 4 instances. Is this a bug in development fabric or this is how it is supposed to be? public override void Run() { foreach (RoleInstance roleInst in RoleEnvironment.CurrentRoleInstance.Role.Instances) { Trace.WriteLine("Instance ID: " + roleI...
We're not a windows shop, but one of our products is going to need to optionally integrate with Active Directory - things like SSO etc. I'd really rather not go through the rigamarole of setting up a whole server just to develop against it and then leave it hanging around for testing purposes. Is there a simple cloud-based service wher...
Hi, We are running our cluster on Amazon EC2. we are using cloudera scripts to setup hadoop. On the master node, we start below services. 609 $AS_HADOOP '"$HADOOP_HOME"/bin/hadoop-daemon.sh start namenode' 610 $AS_HADOOP '"$HADOOP_HOME"/bin/hadoop-daemon.sh start secondarynamenode' 611 $AS_HADOOP '"$HADOOP_HOME"/bin/hadoop-daemon...
Hi, I want to know if there is any open source testing tool for cloud computing. We have built a cloud framework with Xen, Eucalyptus, Hadoop, HBase as different layers. I am not looking at testing each of these tools separately, but i want to test them from the perspective of fitting into a cloud environment (for example scalability of...
Hi, I have a very basic doubt regarding cloud computing that is catching up pretty fast these days. To my understanding, cloud computing is a paradigm in which companies put up their data and applications on somebody else's machines aka 'The Cloud'. I want to know just how secure is it to put up my data on some third party machines, esp...
Hi, writing a article about development cloud computing applications, and i dont know how a call cloud software, the title article is architeture and design of (eg. On demand Application), how definition i can use??i am very confused about this definition wanna know the difference of this concepts: Cloud Application,On demand applicati...
Hi, I've been reviewing Windows Azure platform for some time, and can't find answer to one very important question. If I deploy my application within a cloud, how it will be reached from different places worldwide? For example if I have a web application with a database and want it to be accessible to users in UK, US, China and etc. C...
Which cloud providers accept the shipping of disks with very large amounts of data (say, several Terabytes) for data migration (instead of having to transfer massive quantities of data over wires)? I know that AWS currently offers this kind of service; even so, I was not able to get answers for this question with respect to Azure, Force...
Cloud App has this neat feature wherein it automatically uploads new screenshots as they are added to the Desktop. Any ideas how this is done? ...
I am considering building several C#/.NET4 applications all using a central, cloud based database. In addition, several LAMP (MySQL) web shops will be accessing the cloud DB. MySQL is the database that I'm most familiar with, and my default selection for the cloud DB would be MySQL on Amazon or Joyent. However, I was wondering what deve...
I launched a hadoop cluster and submitted a job to the master. The jar file is only contained in the master. Does hadoop ship the jar to all the slave machines at the start of the job? Is there a possibility that slave machine will run with previous version of code shipped during last run? Thank you Bala ...
Since the launch of .net 4.0 the buzz word has been cloud computing. But very little is said and discussed about it in perspective of .net technologies. Further is it really the worth to invest or do we have sufficient current technologies that can handle what cloud computing offers ? Can you please describe it and an example would be q...
In Zabbix, there is a well documented (although in Draft status) API for instantiating targets and controlling them. Does such an API exist in Nagios? The need for this is a cloud-based implementation. I would like to be able to scale monitoring targets dynamically so that on Monday it would be monitoring 10 targets and Tuesday it w...
Lets say I have a cluster of HTTPD's on a Cloud and they all share the same database. Is setting up MySQL over SSL reasonable paranoia? Or is it security masturbation? What are the pro's and con's of SSL on the cloud? What about ARP Spoofing? ...