Questions tagged [cloud]

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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118
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3answers
40k views

Why do we use a OS Base Image with Docker if containers have no Guest OS?

I've just started to study Docker and there's something that's being quite confusing for me. As I've read on Docker's website a container is different from a virtual machine. As I understood a ...
66
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2answers
23k views

Why does Heroku warn against “naked” domain names?

I ran across this page in the Heroku docs... Naked domains, also called bare or apex domains, are configured in DNS via A-records and have serious availability implications when used in highly ...
50
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6answers
59k views

How to move files between two S3 buckets with minimum cost?

I have millions of files in a Amazon S3 bucket and I'd like to move these files to other buckets and folders with minimum cost or no cost if possible. All buckets are in the same zone. How could I ...
49
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7answers
19k views

If a Windows shop moves “everything” to the cloud, does it still need Active Directory?

Taking a spin off of this question: Do I really need MS Active Directory? in a new direction for 2014. Taking into account a basic Windows infrastructure: domain controllers Exchange 2007/2010/2013 ...
44
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4answers
49k views

Is there a cloud-based reverse proxy solution in AWS?

The system I have an API deployed on EC2 machines on AWS. Incoming HTTPS requests are passed to an elastic load balancer. The load balancer handles the SSL, and passes the request to an Nginx server, ...
32
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3answers
13k views

What are the benefits of running chef-server instead of chef-solo?

I am looking at automated deployment solutions for my team and have been playing with Chef for the past few days. I've been able to get a simple web app up an running from a base Red Hat VM using chef-...
32
votes
8answers
17k views

What is the difference between a cloud server a virtual server and a dedicated server?

What exactly is the difference between a VPS (Virtual Private Server), a Cloud Server, and a Dedicated Server? I'm having trouble finding a concise explanation that isn't littered with advertising.
29
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8answers
12k views

Block employee access to public cloud

First of all, let me state that this is not my idea and I don't want to discuss whether such an action is reasonable. However, for a company, is there a way to prevent employees to access public ...
29
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5answers
20k views

Centralized management system for SSH keys?

We are looking to switch to key-based management of SSH logins, and wonder if there any key-management systems which would allow us to centrally manage the access keys world-wide. The system should ...
26
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4answers
8k views

How can I pre-sign puppet certificates?

Puppet requires certificates between the client (puppet) being managed and the server (puppetmaster). You can run manually on the client and then go onto the server to sign the certificate, but how do ...
23
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12answers
4k views

How can I determine if it is cost-effective to move my site to cloud solution?

I have a large, busy site; it currently runs completely on a dedicated server that I rent each month for ~$700. It has three parts that I think I could carve off to a cloud solution: Media (image/...
21
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3answers
8k views

Automatically Applying Security Updates for AWS Elastic Beanstalk

I've been a fan of Heroku since it's earliest days. But I like the fact that AWS Elastic Beanstalk gives you more control over the characteristics of the instances. One thing I love about Heroku is ...
20
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4answers
5k views

Why do cloud compute instances spin up VMs and not containers?

In AWS for example, when I spin up a new EC2 instance, it loads up a new VM, then populate the VM with a container image. This is the reason why spinning up new EC2 instances take 60-90 seconds to ...
19
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3answers
29k 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 ...
19
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9answers
85k views

Amazon EC2 - No SSH After Reboot, Connection Refused

I've replicated this two or three times, so I'm guessing there's something wrong with what I'm doing. Here are my steps: Launch new instance via EC2 Management console using: Ubuntu Server 13.10 - ...
17
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4answers
26k views

Fastest time to get an EC2 instance running

I am considering moving from a VPS to EC2. EC2 is elastic and so is its pricing; I could boot my instance on demand, then let it shut down if it isn't active by the end of some hourly period. How ...
15
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4answers
2k 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 ...
15
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2answers
2k views

Why does Google recommend removing SSH keys from GCE for security?

The below reference to Google documentation is no longer true. Google recommends removing SSH keys from GCE instance to secure SSH. That does not make any sense to me. The keys are there for a ...
13
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3answers
382 views

What do Virtual Private Server vs Dedicated Cloud run on?

Before you mark this duplicate I read all the suggestions an none answer my question. I am being told something by a hosting provider, however what they are telling me is contradictory to what I am ...
13
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4answers
4k views

Running a Small 64bit Amazon EC2?

I'm playing with Amazon EC2, and I've got a 64bit AMI, but when I launch it, the 'Instance Type' only has 'Large', 'Extra Large' and 'High-CPU Extra Large', no 'Small' which the documentation lists as ...
12
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4answers
6k views

What happens when a physical machine fails in a virtual environment? [closed]

I'm getting started with virtualization so bear with me. In virtual environments applications run in a hypervisor's layer. So a single physical machine could have many virtual machines on it running ...
12
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3answers
710 views

Which cloud services will be around in 2015? [closed]

There are several cloud service providers. But, if you're going to design an app that runs on their infrastructure, you have to have confidence that they are going to be around for a while, and that ...
12
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7answers
12k views

What is a practical way to mirror an Amazon S3 bucket?

I want to mirror my Amazon S3 buckets. I want to do this because 1) I don't want all my data only existing with one provider; and 2) in case of software error or security breach I want to have the ...
12
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2answers
12k views

Can I re-use an EBS volume with AWS ASG?

I want to create an ASG such that I can reuse existing EBS volumes (because I have persistent data on those volumes) to new EC2 instances that are instantiated via ASG. Is this possible? Update ...
12
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7answers
6k views

Cloud Providers that support FreeBSD? [closed]

NOTE: Even though I've accepted an answer for this, if you have a better one, please put it below. Thanks! I'm looking for recommendations from the wise and all-knowing Server Fault community on ...
11
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4answers
10k views

What's the difference between cloud hosting and normal hosting?

What's the difference between cloud hosting and normal hosting? And when do you use each? What are the benefits to the customer?
11
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4answers
812 views

Moving all internal servers to the cloud

Background One of my clients is an IT-dependent workflow-driven law firm with about 50 seats. They have been audited by one of their clients (an FSA regulated mortgage lender) and told that their ...
10
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5answers
4k views

Why use a print server?

We have 3 network-printers to manage for about 50 users. Until now we have used a Windows 2003 Server Domain Controller with print service as our print server, but we are migrating many services to ...
9
votes
4answers
803 views

issue when trying migration via Microsoft Virtual Machine Converter

I want to migrate my Esxi VM from on promise to Azure cloud. I've found solution which provides it to me. Microsoft Virtual Machine Converter, provides migrating to Azure Cloud. During migration ...
9
votes
1answer
684 views

How to replace a third party AWS cloud accounts provider with bespoke account governance?

My company (an inward-looking institution without customer or external interface) has moved all operations from a local data centre to AWS a few years back, mostly to a handful of large AWS accounts (...
9
votes
1answer
351 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 ...
8
votes
5answers
14k views

What does it mean 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 /sys/block/<drive>/queue/...
8
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4answers
12k views

How Ubuntu cloud version enforces the “no root login” over ssh?

I'm looking to tweak ubuntu cloud version default setup where is denies root login. Attempting to connect to such machine yields: maxim@maxim-desktop:~/workspace/integration/deployengine$ ssh root@...
8
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4answers
445 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 ...
8
votes
2answers
4k views

Is it safe to run do-release-upgrade on a cloud VM?

I have a few Ubuntu VMs on Azure running Server 17.10 and I'm wondering if it's safe to upgrade them to 18.04.1 LTS using do-release-upgrade. If so, what precautions should I take?
7
votes
2answers
9k views

How to estimate network data transfer volume for a mysql database

When planning to port my application (Java+Tomcat+MySql) to a cloud hosting, I've found that one important factor to consider is the volume of data transferred to/from the database, as it is limited ...
7
votes
1answer
2k 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 password-...
7
votes
4answers
1k views

What is the cheapest non-colocation way to serve about 10 static files at a rate of 100 megabits per second to the web? [closed]

I've looked at Amazon S3 and it costs roughly $4746 per month for 100 megabits/s (which translates into 31,640 Gigabytes of data transferred. That's at a rate of $0.15 per gig.) I haven't found a ...
7
votes
1answer
5k 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 sysadmin/...
7
votes
2answers
5k 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 Pay-...
6
votes
6answers
6k views

Where is the best place to buy fast CPU time? [closed]

I sometimes have some data processing jobs to run, but my laptop is not fast enough (2.4 Ghz Core 2 Duo) or don't have enough memory (4 GB). It may need to run for days. I want to buy fast computing ...
6
votes
1answer
113 views

Why is the pricing of my GCP instance going down every week and comes back up at the beginning of each month?

I'm running on Google Cloud. I was looking at the costs and I noticed something weird - every week the daily cost of running machines is going down, and then on the 1st day of the month, it goes back ...
6
votes
2answers
2k views

What are common strategies for configuration management on EC2?

Without using a 3rd party cloud configuration service, what are common patterns/strategies or whitepapers written on the subject of configuration management with EC2? Specifically on how to configure ...
6
votes
1answer
4k views

Amazon EC2 instance ssh problems

I`m new to EC2 and I'm having some problems setting up my first instance. I followed this guide: http://www.robertsosinski.com/2008/01/26/starting-amazon-ec2-with-mac-os-x/ with the difference that I ...
6
votes
1answer
9k views

What is the difference between OpenStack, CloudFoundry and Stackato?

I'm quite new to all this *aaS thing, and currently I'm trying to wrap my head around concepts and how things basically work. What puzzles me quite a bit at the moment is the difference between a ...
6
votes
2answers
854 views

Cloud vs traditional iSCSI, xen, drbd, etc

I was wondering, how does a 'traditional' virtual machine setup with storage on iSCSI, with a fallback using DRBD, nodes with Xen installed the 'normal way', storing their images on the iSCSI target, ...
6
votes
0answers
3k views

excessive glusterfs memory usage

I run a 3-node glusterfs 3.10 cluster based on Heketi to automatically provision and deprovision storage via Kubernetes. Currently, there are 20 volumes active - most with the minimum allowed size of ...
5
votes
4answers
7k views

Comparison of cloud hosting providers [closed]

Is there a place where we can compare* the many new arising cloud hosting providers? From reading into each of them, they seem very different and range from just hosting applications (google) to a ...
5
votes
2answers
8k views

Decreasing Root Disk Size of an “EBS Boot” AMI on EC2

So I have followed Eric's wonderful article here: http://alestic.com/2009/12/ec2-ebs-boot-resize This was the code basically that helped me increase the default size of the AMI: ec2-run-sintances ...
5
votes
1answer
2k views

I accidentaly enabled the UFW on my Google Cloud Computer

I accidentally enabled the UFW on my Google Cloud Compute debian instance and unfortunately port 22 is blocked now. I've tried every way to go inside the VM but I can't. I'm trying to access through ...

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