Highest scored 'cloud' questions

135 votes

4 answers

49k 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 ...

user1620696

1,463

asked Feb 11, 2016 at 16:39

67 votes

2 answers

24k 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 ...

Agvorth

2,439

asked Jul 16, 2012 at 4:55

53 votes

6 answers

68k 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 ...

Daniel Cukier

823

asked Jan 12, 2012 at 22:33

49 votes

7 answers

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 ...

TheCleaner

32.8k

asked Jan 24, 2014 at 20:41

49 votes

5 answers

66k views

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

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, ...

Adam Matan

13.7k

asked Jul 30, 2015 at 20:59

33 votes

5 answers

25k 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 ...

SyRenity

3,189

asked Aug 23, 2011 at 20:06

32 votes

3 answers

14k 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-...

linusthe3rd

625

asked Jun 23, 2011 at 15:37

32 votes

8 answers

18k 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.

smartcaveman

695

asked Jun 9, 2011 at 1:31

29 votes

8 answers

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 ...

marsze

467

asked Feb 10, 2014 at 12:04

26 votes

4 answers

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 ...

Ranguard

681

asked Oct 2, 2008 at 16:32

24 votes

9 answers

101k 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 - ...

SteadH

676

asked Jan 18, 2014 at 18:51

23 votes

12 answers

5k 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/...

Eric

1,147

asked Aug 12, 2020 at 7:07

21 votes

4 answers

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 ...

user3667125

349

asked Jul 1, 2020 at 7:13

21 votes

3 answers

9k 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 ...

Eric Anderson

255

asked Jun 26, 2013 at 18:17

19 votes

3 answers

37k 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 ...

Cera

553

asked Jan 15, 2013 at 1:30

19 votes

3 answers

18k 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 ...

steve landiss

399

asked Feb 11, 2017 at 6:25

17 votes

4 answers

33k 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 ...

Tobu

4,466

asked Sep 9, 2010 at 22:26

15 votes

4 answers

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 ...

chx

1,715

asked Oct 31, 2012 at 16:53

15 votes

7 answers

18k 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 ...

Ben

183

asked Sep 27, 2010 at 18:28

15 votes

2 answers

3k 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 ...

Martin Prikryl

7,980

asked Aug 29, 2014 at 5:42

13 votes

3 answers

490 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 ...

Anthony Fornito

9,588

asked Jan 5, 2017 at 19:26

13 votes

4 answers

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 ...

Amandasaurus

32.5k

asked Aug 10, 2009 at 10:52

12 votes

4 answers

7k 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 ...

Sherif

255

asked Aug 22, 2015 at 21:23

12 votes

3 answers

717 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 ...

Jim

1,555

asked Apr 30, 2009 at 13:16

12 votes

7 answers

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 ...

Jed Daniels

7,402

asked May 14, 2010 at 18:02

12 votes

2 answers

6k 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?

georgiosd

299

asked Sep 18, 2018 at 15:13

11 votes

5 answers

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 ...

Douglas

229

asked Jan 24, 2014 at 15:18

11 votes

4 answers

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?

abdul

121

asked Oct 2, 2009 at 21:26

11 votes

4 answers

917 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 ...

Alasdair C-S

329

asked Jan 20, 2012 at 18:12

10 votes

5 answers

18k 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/...

Ha Son Hai

305

asked May 20, 2015 at 15:45

9 votes

4 answers

992 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 ...

Amir Damirov

99

asked Jun 1, 2018 at 7:42

9 votes

1 answer

721 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 (...

BuZz

193

asked Oct 18, 2020 at 21:29

9 votes

1 answer

360 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 ...

awfm9

91

asked Jun 18, 2015 at 14:30

8 votes

4 answers

14k 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@...

Maxim Veksler

2,795

asked Dec 26, 2010 at 8:44

8 votes

4 answers

467 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 ...

Rens Groenveld

191

asked Nov 16, 2012 at 15:01

8 votes

1 answer

8k views

Worker Group VS Node Group EKS

I am trying to use https://registry.terraform.io/modules/terraform-aws-modules/eks/aws/12.2.0(Terraform AWS EKS provider) What is the difference between worker nodes and node group?

Alex Kok

83

asked Sep 8, 2020 at 19:41

8 votes

2 answers

11k 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 ...

pablochacin

210

asked Aug 12, 2013 at 7:03

8 votes

1 answer

7k 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/...

MechaStorm

207

asked Feb 12, 2015 at 2:06

7 votes

2 answers

12k 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. I'...

Mike Deck

183

asked Feb 4, 2013 at 17:30

7 votes

1 answer

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-...

larsks

45.6k

asked Oct 24, 2012 at 13:43

7 votes

4 answers

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 ...

Mark172

217

asked Jun 6, 2010 at 6:30

7 votes

2 answers

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-...

Michael Bullut

71

asked Feb 25, 2015 at 13:44

7 votes

0 answers

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 ...

Lars

458

asked Dec 5, 2017 at 22:55

6 votes

1 answer

5k 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 ...

Zoeldjian Wantogia

61

asked Dec 18, 2018 at 15:14

6 votes

2 answers

403 views

Alternative way to deploy Azure VM from generalised image with AzureRM

I am wondering in what way should I spin-up windows VM for Azure from generalized image, in order to add custom settings (from what I know it's impossible to customise the VM which was deployed from ...

fopsik

615

asked Aug 29, 2017 at 14:04

6 votes

6 answers

7k 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 ...

physicistjedi

asked Nov 10, 2010 at 0:25

6 votes

1 answer

388 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 ...

ssobczak

163

asked Aug 6, 2019 at 12:43

6 votes

2 answers

20k views

Resize LVM without data loss

I have Cloud Linux Serwer with LVM with two disk (40 + 50). For today, I do not need a second drive and I would like to unplug it by keeping LVM for the future. # vgdisplay --- Volume group --- ...

erdys

63

asked Mar 27, 2018 at 8:53

6 votes

2 answers

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 ...

James

195

asked Jun 3, 2012 at 22:21

6 votes

1 answer

5k 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 ...

ThePiachu

229

asked Oct 8, 2011 at 14:45

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