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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18 views

Use domain name with multiple IPs in Varnish reverse proxy

I am having an issue with my varnish reverse proxy setup. We have a domain that points to different IPs root@vproxy:~# service varnish restart Message from VCC-compiler: Backend host ...
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35 views

Is “The Cloud” one thing? Is there one Cloud or are there many? [closed]

The definite article "the" makes it seem like it's one single entity (made up of discretely distributed nodes, obviously). But it also seems like Google, Amazon, and Microsft all have their own cloud ...
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0answers
14 views

Cloud server - why downscaling requires restart

I'm using a cloud server that has the ability of autoscaling (vertical scaling). Depending on the current load it is capable of adding or removing CPU's and/or memory banks (virtual of course) to the ...
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0answers
26 views

Google Cloud DNS top level domain [duplicate]

I would like to host a static site on google cloud storage and I'm using Cloud DNS. lets say I have a domain: example.com, I can create a bucket with a subdomain: www.example.com and it works well but ...
4
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0answers
41 views

Best Foundation for Mesos Deployment

We are currently in the process of designing the architecture of our new Apache Mesos cloud setup. The goal is to unify our systems by moving different stacks onto the same architecture. The main ...
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0answers
11 views

Doubts about OpenStack nova and swap files

I have some doubts about the qcow2 swap files created by nova when launching instances. I've launched two instances with respectively 1G and 8G of swap memory. So, I verified that four disks where ...
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0answers
9 views

Windows server cloud hosting with firewall for IPSEC

I am trying to setup a Windows server with an IPSec tunnel to a remote location. First I tried vps.net after a sales person told me it would be no problem. Then it was a problem. So I tried to ...
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1answer
11 views

Openstack Nova Compute cluster [duplicate]

how to glue multiple CPUs together, I mean How openstack achieves it. What do they really mean when they say create CPU cluster using Openstack Nova. Openstack is written in Python, Any example ( ...
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1answer
22 views

Snapshot failing in a fresh Kilo install

I have a fresh OpenStack Kilo installation. When I try to create a snapshot from the dashboard or from the nova cli, the snapshot isn't being created. The local snapshot ends with success, but nova ...
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0answers
6 views

Where the openstack machine images are stored?

In Openstack cloud the machine images are stored inside the database as a blob object or it will be stored in filesystems? and where the machine images are stored in glance filesystem or in shift ...
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1answer
30 views

Migrate to Azure Active Directory [closed]

We intend to migrate all our on-premises active directory accounts and resources to Azure AD. Then follow by migrating files and printers as well as on-premises applications, i.e. sql onto the cloud. ...
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0answers
25 views

Automatically upgrade virtual machine in load balanced set on Windows Azure

I have been serving web content off of a Linux VM running in Windows Azure, and now want to make a duplicate virtual machine and create a load-balanced set to handle more load and avoid downtime. I've ...
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22 views

Does it make sense to define a VNC server in an OpenStack controller node?

I have some doubts about the vncserver_listen and the vncserver_proxyclient_address options in the nova.conf config file. In the OpenStack install guide, the session Chapter 5. Add the Compute ...
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1answer
57 views

What it means when Linux has no I/O scheduler

I have some virtual machines running Ubuntu cloud-based image 14.04-1 LTS version. I wanted to see the IO performance of different IO schedulers on the VM so I went to ...
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2answers
28 views

awstats server in dynamic infrastructure

I have a linux server dedicated to awstats. This server hosts awstats application and generate/publish statistics for several websites hosted by several webservers deployed in my infrastructure. In ...
1
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0answers
41 views

Azure VM - HTTP GET to Rackspace server is too slow [closed]

I'm testing a web service from my Azure VM and the test involves just doing an HTTP GET which returns JSON data from a Rackspace-hosted server. When performing this test from ANYWHERE but Azure, the ...
0
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1answer
43 views

Steps for upgrading ubuntu production cloud server

I have a site running on a cloud server with Ubuntu 13.04. I want to upgrade to 14.04 as seamlessly as possible. I found this answer but I wanted to flesh it out so I can be more confident. My plan ...
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0answers
29 views

Magento VM Instance on Google Cloud Platform doesn't allow uploading any files

Decided to give the Google Cloud Launcher a try by launching a one click Magento installation. Everything went smoothly and it did get up and running, however I have encountered one glaring fault that ...
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1answer
57 views

Should I deploy hadoop on physical machines or virtual machines?

We will deploy a hadoop cluster on hundreds(say 300) of physical x86 nodes. Since we have no much production deployment experience, there is a simple question as the title we want to hear response ...
1
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1answer
137 views

Azure backup VPN tunnel

Is it possible to set up a failover site to site VPN tunnel in Azure? I have one tunnel already established to local network "MyLocalNet". I want to set up a second tunnel with a different endpoint ...
1
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1answer
41 views

options for storing relatively large amount of data [closed]

I'm currently doing a bit of research for a multinational company, as part of my thesis. Truth be told, I'm more of a software/programmer kind of guy, so I'm not quite in my element here. My question ...
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2answers
40 views

URLs and cloud providers [closed]

Lets say that there is the url www.example.com This url holds an web application with a cloud provider other than Google. Lets say there is a second url, an extension of the first url: ...
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votes
1answer
221 views

How to secure OwnCloud? [closed]

I am not literate when it comes to servers, but I like the idea of having my own cloud storage for privacy reasons. OwnCloud is targeting (at least a little bit) the "DIY-home-user" so it seemed to be ...
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1answer
56 views

Current setup maxing CPU. Need help designing AWS architecture and MySQL Clustering via AWS RDS instances

My company runs a mid-sized eCommerce (30,000-50,000 unique views monthly) shopping cart using X-Cart as a back-end. We are in the processing of redesigning and upgrading our back-end software. We are ...
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votes
1answer
102 views

Office 365: is it fully online solution (i.e. syncing isn't required)? Can it be used with other cloud storage services? [closed]

For some reason unknown I just can't find a good techical explanation of how exactly Office 365 functions, and, particularily, can I completely disable all kinds of local ...
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1answer
59 views

Use of volume backing file size use in devstack?

I am trying to set up openstack on a single machine using devstack scripts. In configuration for cinder this parameter is given VOLUME_BACKING_FILE_SIZE. I am not able to understand what is the use of ...
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votes
1answer
43 views

Azure Cloud Services Running 4 hours straight [closed]

I've deployed some WCF services to the Azure Cloud Services, but it shows every day that it runs for 4 hours, when no-one is using the services. The only thing I thought was maybe it was hackers ...
0
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1answer
161 views

Can I replace local Microsoft Active Directory with AWS Directory Service?

We have a very basic AD usage (basically manage user password reset) and for that we have to maintain a old Windows server. All the services our internal users access are on the cloud (GMail, Google ...
0
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1answer
116 views

How to install AV on existing Azure VM using agent tools?

If I already deployed a VM, how can I use the VM agent to install an antivirus software from the Azure marketplace (i.e. McAfee)? There must be some Powershell command or something but everything I've ...
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0answers
102 views

Ubuntu MySQL/Jetty unexpected server halt - hardware or software?

I have a MySQL 5.7, jetty 9, and NGINX 1.6 server running ubuntu 14.04.1 in digital ocean. It has zero security updates waiting to be installed and iptables blocking access to everything except for 80 ...
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0answers
81 views

How to power down Cloudstack configured with XenServer Hypervisors

I have three XenServers(6.2) configured in a single pool. I also have a Cloudstack (CentOS 6.5) Management interface controlling them all. Everything is up and running but I can not figure out how to ...
1
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1answer
46 views

cloud-init not executing on rackspace cloud

I was trying to pass a bash script to cloud-init on rackspace-cloud with 'nova boot' via --user-data. I used the following command: nova boot --key-name mykey1 --image "Ubuntu 14.04 LTS (Trusty Tahr) ...
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1answer
106 views

Migrating resources between different Azure subscriptions

I have a few questions for the Azure gurus out there. I work for a software development house and I have been asked with coming up with our Azure infrastructure. The idea I had is to set up three ...
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82 views

Google Cloud: Connection Refused upon reset/shutdown

I recently signed up with Google Cloud to host a small VM instance. I created a basic instance with Ubuntu Server 14.04 LTS as its OS, installed apache2, MySQL and Wordpress to it and worked on a ...
2
votes
1answer
128 views

Google Cloud AutoScaler usage and instance health detection

I find it a bit confusing how Google Cloud Auto Scaler, Managed Instance Group, Target Pools and Network Load Balancers work together. The documentation is a bit sparse and there is no explicit ...
0
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1answer
54 views

Test cloud VM performance

I have a linux VM hosted in a cloud environment. I suspect the provider to do too much overprovisioning with CPU and IO, from time to time. For example postgresql's reports 300ms+ queries that are ...
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votes
1answer
33 views

What are the MOST Important Things to Configure on a WAF? Specifically Barracuda Web Application Firewall

I will be hosting a web application on a cloud provider. This will be protected behind a WAF specifically Barracuda's Web Application Firewall Vx. I do not have too much experience with WAF ...
0
votes
1answer
401 views

How to the set the hostname in an AWS ec2 instance to a unique value in an autoscale group?

I wanted to find out what is the best practice of setting the hostname of an Ec2 instance that is in an autoscale group. I am looking for a method that is generally acceptable in the ...
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votes
1answer
41 views

How should my company bring its product, a line-of-business MVC application, into the cloud? [closed]

I am a recently-hired junior software engineer at a small company that develops and sells a normal client/server MVC application to small and mid-level enterprise clients in a particular line of ...
1
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2answers
91 views

Reliably send small amount of mail from possibly blacklisted cloud IPs

So you boot a new cloud server. Only to discover that its IP is blacklisted by misbehavior of the previous owner. How to make sure your mail gets delivered for a modest price? Context: I provide my ...
2
votes
1answer
263 views

Azure public endpoint SSL termination

In Azure, is there any way to set up an HTTPS endpoint directly on the public VIP, as opposed to joining each VM to a load balanced set, so that I can associate this endpoint with the SSL certificate ...
0
votes
1answer
983 views

OpenStack Cinder: iSCSI login negotiation failure after reboot

I have a Cinder storage and controller node running on the same CentOS 7 box as Nova compute. Everything worked fine, until I rebooted. Now my instances can't mount volumes and I get the errors below. ...
0
votes
1answer
70 views

Why is clock synchronization on servers difficult?

See: Clock synchronization quality on Windows Azure? This is not meant as a rant, it is just curiosity. Is a computer really drifting more than a second in a single day? I can barely imagine that. ...
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2answers
76 views

Eucalyptus can't find ssl certs

I've installed eucalyptus-cloud, -cc, -sc, -walrus on a single computer to test it, with the intent to install node controllers on my other servers. When I start eucalyptus-nc it outputs Cannot find ...
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votes
1answer
35 views

Why can't I see public ip on my cloud server? [closed]

I have recently applied for a cloud-based server. I am not very experienced in system admin. So pardon me if this is silly. I was using ifconfig command to view available network interface. But I ...
0
votes
1answer
134 views

Backup Hyper-V To Google Drive?

I was thinking about backing up a Hyper-V host to the cloud and a potentially crazy idea came to mind. With Google Drive, you can get 1TB of storage for 2 bucks a month. This would be more than ...
0
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1answer
118 views

OpenStack error when converting a glance image to a cinder volume

/var/log/cinder/volume.log shows the following error when converting a glance-registered QCOW2 image to a cinder volume. local variable 'tmp' referenced before assignment failed to copy image to ...
0
votes
1answer
85 views

VMware Grails application on one VM can't access MongoDB on another VM

I have two VMs in a VMware cloud that belong to the same VApp and so are behind the same edge gateway. The both have their own different internal ip addresses but I route services from the outside to ...
0
votes
1answer
63 views

Openstack Cloud [closed]

I have 30 servers of misc types, with different CPU, RAM, HDD etc. Thinking of using Openstack to make all the servers into a big cloud --- and then use Openstack to make several (say 20 VM's) ...
1
vote
1answer
35 views

IP forwading amazon ec2 another server IP

I use this command in windows azure (NAT), to redirect all requests to another server with other IP iptables -t nat -A PREROUTING -i eth0 -d 10.240.154.15 -j DNAT --to-destination 192.188.47.63 ¿ ...