Hot answers tagged

93 votes
Accepted

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

Since all Linux distributions run the same (yup, it's a bit simplified) Linux kernel and differ only in userland software, it's pretty easy to simulate a different distribution environment - by just ...
drookie's user avatar
  • 8,759
36 votes

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

Containers typically run only a single application and are immutable, i.e. and changes are not preserved across restarts. Containers also don't have their own kernel. VMs on the other hand run the ...
MLu's user avatar
  • 25.3k
20 votes
Accepted

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

Your question is, to some extent, looking at things backwards: EC2 isn't a general-purpose hosting solution that happens to use VMs; it is a service for hosting VMs. As such, there's a few ways to ...
IMSoP's user avatar
  • 500
17 votes

I accidentaly enabled the UFW on my Google Cloud Computer

This answer shows two methods of solving this problem. The first method is to create a startup-script that disables UFW. The second method attaches the boot disk to another instance and modifies the ...
John Hanley's user avatar
  • 4,904
17 votes

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

Security is definitely a reason. Containers share the same kernel between them and the host. So they are not considered 100% isolated. Yet cloud providers do provide containers also. AWS does it too. ...
Krackout's user avatar
  • 1,575
16 votes

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

Update AWS would charge $3300 a month for 35TB of outbound bandwidth. Five of the largest Lightsail instances would cost a bit over $800 and would include 35GB of traffic. I assume that you can use ...
Tim's user avatar
  • 32.6k
14 votes

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

Old topic, but this is for anyone investigating the same scenario. Along with the time it took me, for 20,000+ objects. Running on AWS Linux/Centos, each object being images for the most part, along ...
user1360528's user avatar
14 votes

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

IMO, you can try to do it like this (I do something similar but with Elastic Network Interfaces). This assumes either a knowledge of AWS CloudFormation service or AWS CLI: Create an EBS volume Create ...
dsmsk80's user avatar
  • 5,937
14 votes
Accepted

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

why would our internal cloud team not buy accounts straight from AWS? They probably get discounts. These large "billing consolidation providers" invoice their customers millions of dollars ...
MLu's user avatar
  • 25.3k
13 votes
Accepted

What do Virtual Private Server vs Dedicated Cloud run on?

If we are talking about hosting companies selling only Linux VPS, then in most cases they use OpenVZ/Virtuozzo for virtualization, which is not providing virtual machines but virtual containers, ...
ralz's user avatar
  • 2,781
13 votes
Accepted

Do I need to backup my data hosted on cloud services?

YES Often the backups a provider makes are not accessible to their customers but only to ensure the continuity of the service the provider offers. If, for whatever reason (accident, negligence, ...
HBruijn's user avatar
  • 80k
12 votes

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

There's several different approaches to containers, and the current accepted answer only seems to account for the OCI-style (docker-like) containers. There's many other types of containers, such as ...
ave's user avatar
  • 220
11 votes

What do Virtual Private Server vs Dedicated Cloud run on?

The statement that VMware gives you perfect isolation is not true at all. KVM does a better job, however isolation is about resources not about the hypervisor they use. If you share the same ...
Lucas's user avatar
  • 523
11 votes
Accepted

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

Yes I just did this to about 110 EC2 instances. I actually did it from Ubuntu 14.04 through 16.04 and up to 18.04 using an automated the process for that many instances. It turns out it is possible ...
JDS's user avatar
  • 2,608
11 votes
Accepted

Worker Group VS Node Group EKS

The difference is that node_groups are Amazon EKS managed nodes and worker_groups are self managed nodes. Check this Github issue for more details.
acid_fuji's user avatar
  • 573
10 votes
Accepted

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

No. Autoscaling groups start multiple EC2 instances. Each EBS volume can only be attached to a single EC2 instance. Therefore you shouldn't do this, and it's probably not possible. If you have ...
Tim's user avatar
  • 32.6k
9 votes

issue when trying migration via Microsoft Virtual Machine Converter

You can try out StarWind V2V converter to convert your VMware VM to Hyper-V (Windows) VM. StarWind V2V does support Windows Repair (in case if the VM is Windows-based) and does have possibility to ...
Net Runner's user avatar
  • 6,199
8 votes

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

Only one concern here when you mind about price: Public Cloud sells in terms of virtual CPUs (basically hyperthreads) with a number of different generations of CPUs. So, do not consider the: 1 on-prem ...
matteo nunziati's user avatar
7 votes

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

Looks like you can do this now #cloud-config users: - default - name: jdoe gecos: John Doe ssh-authorized-keys: - ssh-rsa ... - name: jroe gecos: Jane Roe ssh-authorized-...
Aaron McMillin's user avatar
7 votes

Migrating from AWS EBS to Co-Lo hosted SAN/NAS

SAN/NAS for < $3,600 per TB? This is totally doable. However, don't forget that apart from SAN hardware/software itself, there are lots of things that should be considered, such as: redundant ...
Strepsils's user avatar
  • 5,115
7 votes
Accepted

Alternative way to deploy Azure VM from generalised image with AzureRM

I second Wayne's answer. Azure cloud market provides you with functionally to create most common VMs but with limited VMs' customisation functions. To deploy generalized VM, all that you need is ...
Mr. Raspberry's user avatar
7 votes

issue when trying migration via Microsoft Virtual Machine Converter

Microsoft Virtual Machine Converter is dead in the water since mid-2016. It's not supported, not maintained anymore and while you can find binaries still it can't do anything with VMware ESXi versions ...
NISMO1968's user avatar
  • 1,062
7 votes
Accepted

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

The prices don't change, but an increasing discount is applied when your instances run longer. Google Compute offers a sustained use discount for running specific Compute Engine resources a ...
HBruijn's user avatar
  • 80k
7 votes

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

As no-one has mentioned Azure yet here are my two cents in that respect. In general I would recommend to tear things apart and move them to PaaS services whenever possible. This would prepare your ...
Matthias Güntert's user avatar
7 votes

AWS EC2 Windows server with S3 storage for Veeam backup

You can actually connect to S3 bucket from EC2 instance. https://aws.amazon.com/premiumsupport/knowledge-center/ec2-instance-access-s3-bucket/ So you can build it. However, in case you have Veeam ...
Stuka's user avatar
  • 5,680
7 votes
Accepted

How does network pricing work exactly in cloud platforms? And how should I avoid dedicated pricing attacks?

Cloud services provide awesome benefits for projects, which are specially built for using them. If we are talking about application/web hosting, then cloud pricing models suit businesses, which ...
Anubioz's user avatar
  • 3,717
6 votes

Automatically Applying Security Updates for AWS Elastic Beanstalk

As of April 2016, Elastic Beanstalk supports automatic platform updates: https://aws.amazon.com/about-aws/whats-new/2016/04/aws-elastic-beanstalk-introduces-managed-platform-updates/
jeffnappi's user avatar
6 votes

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

Take a look at Kong. Besides being open-source, you can operate it using its internal RESTful API, and you can extend it with custom plugins.
Mark's user avatar
  • 462
6 votes

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

The AWS CLI provides a way to copy one bucket to another in parallel processes. Taken from https://stackoverflow.com/a/40270349/371699: The following commands will tell the AWS CLI to use 1,000 ...
timetofly's user avatar
  • 215

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