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Multi-arch build and images, the simple way

“Build once, deploy anywhere” is really nice on the paper but if you want to use ARM targets to reduce your bill, such as Raspberry Pis and AWS A1 instances, or even keep using your old i386 servers, deploying everywhere can become a tricky problem as you need to build your software for these platforms. To fix this problem, Docker introduced the principle of multi-arch builds and we’ll see how to use this  and put it into production.

Quick setup

To be able to use the docker manifest command, you’ll have to enable the experimental features.

On macOS and Windows, it’s really simple. Open the Preferences > Command Line panel and just enable the experimental features.

On Linux, you’ll have to edit ~/.docker/config.json and restart the engine.

Under the hood

OK, now we understand why multi-arch images are interesting, but how do we produce them? How do they  work?

Each Docker image is represented by a manifest. A manifest is a JSON file containing all the information about a Docker image. This includes references to each of its layers, their corresponding sizes, the hash of the image, its size and also the platform it’s supposed to work on. Continue reading

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Microsoft Cloud Surge Counters COVID-19 Impact

The cloud and computing giant did admit to a slowdown in business as the quarter came to an end,...

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From Isolation to Preparedness and Empowerment in Rural Argentina

Nelso Rodríguez is a nurse and one of the founders of the community network in El Cuy, Patagonia, Argentina.

A little over a year ago, there was no Internet or mobile connection in my isolated town of El Cuy, population 540.

After several unsuccessful attempts by the provincial government to bring in satellite Internet – which was of very poor quality, at very high costs – our people began to demand an Internet for all.

After a newspaper article exposed our lack of connectivity, the Internet Society offered to help us set up a community network. There was a fiber-optic cable passing through a village just 50 kilometers away, which also had a tower with an Internet signal. So, a group of residents volunteered to dig the trenches for the anchors and lay the concrete. The Internet Society financed all the material and provided the technical expertise. After making a connection between two antennas, we managed to bring community Internet to El Cuy.

Our network has been up and running since February 2019, reaching almost 400 residents in El Cuy and another 100 in the nearby town of Cerro Policía. This has been spectacular in so many ways!

Our community Continue reading

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DDoS attacks have evolved, and so should your DDoS protection

The proliferation of DDoS attacks of varying size, duration, and persistence has made DDoS protection a foundational part of every business and organization’s online presence. However, there are key considerations including network capacity, management capabilities, global distribution, alerting, reporting and support that security and risk management technical professionals need to evaluate when selecting a DDoS protection solution.

Gartner’s view of the DDoS solutions; How did Cloudflare fare?

Gartner recently published the report Solution Comparison for DDoS Cloud Scrubbing Centers (ID G00467346), authored by Thomas Lintemuth, Patrick Hevesi and Sushil Aryal. This report enables customers to view a side-by-side solution comparison of different DDoS cloud scrubbing centers measured against common assessment criteria.  If you have a Gartner subscription, you can view the report here. Cloudflare has received the greatest number of ‘High’ ratings as compared to the 6 other DDoS vendors across 23 assessment criteria in the report.

The vast landscape of DDoS attacks

From our perspective, the nature of DDoS attacks has transformed, as the economics and ease of launching a DDoS attack has changed dramatically. With a rise in cost-effective capabilities of launching a DDoS attack, we have observed a rise in the number of under 10 Gbps DDoS Continue reading

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Ansible Linting with GitHub Actions

Want to trigger linting to your Ansible deployment on every Pull Request?

In this blog, I will show you how to add some great automation into your Ansible code pipeline. 

CI/CD is currently a pretty hot topic for developers. Operations teams can get started with some automated linting with GitHub actions. If you use GitHub you can lint your playbooks during different stages including git pushes or pull requests.

If you’re following good git flow practices and have an approval committee reviewing pull requests, this type of automated testing can save you a lot of time and keep your Ansible code nice and clean.

 

What is Ansible Lint?

Ansible Lint is an open source project that lints your Ansible code. The docs state that it checks playbooks for practices and behavior that could potentially be improved. It can be installed with pip and run manually on playbooks or set up in a pre-commit hook and run when you attempt a commit on your repo from the CLI.

The project can be found under the Ansible org on GitHub.

 

What are GitHub Actions?

From the GitHub documentation: GitHub actions enable you to create custom workflows to automate Continue reading

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Empowering our Customers and Service Partners

Last year, Cloudflare announced the planned expansion of our partner program to help managed and professional service partners efficiently engage with Cloudflare and join us in our mission to help build a better Internet. Today, we want to highlight some of those amazing partners and our growing support and training for MSPs around the globe. We want to make sure service partners have the enablement and resources they need to bring a more secure and performant Internet experience to their customers.

This partner program tier is specifically designed for professional service firms and Managed Service Providers (MSPs and MSSPs) that want to build value-added services and support Cloudflare customers. While Cloudflare is hyper-focused on building highly scalable and easy to use products, we recognize that some customers may want to engage with a professional services firm to assist them in maximizing the value of our offerings. From building Cloudflare Workers, implementing multi-cloud load balancing, or managing WAF and DDoS events, our partner training and support enables sales and technical teams to position and support the Cloudflare platform as well as enhance their services businesses.

Training

Our training and certification is meant to help partners through each stage of Cloudflare adoption, Continue reading

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Stressing the network when it’s already down

Stressing the network when it’s already down

[Impact by Eric Wienke, edits by Ben Cartwright-

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Linux Network Observability: Building Blocks

As developers, operators and devops people, we are all hungry for visibility and efficiency in our workflows. As Linux reigns the “Open-Distributed-Virtualized-Software-Driven-Cloud-Era”— understanding what is available within Linux in terms of observability is essential to our jobs and careers.

Linux Community and Ecosystem around Observability

More often than not and depending on the size of the company it’s hard to justify the cost of development of debug and tracing tools unless it’s for a product you are selling. Like any other Linux subsystem, the tracing and observability infrastructure and ecosystem continues to grow and advance due to mass innovation and the sheer advantage of distributed accelerated development. Naturally, bringing native Linux networking to the open networking world makes these technologies readily available for networking.

There are many books and other resources available on Linux system observability today…so this may seem no different. This is a starter blog discussing some of the building blocks that Linux provides for tracing and observability with a focus on networking. This blog is not meant to be an in-depth tutorial on observability infrastructure but a summary of all the subsystems that are available today and constantly being enhanced by the Linux networking community for networking. Continue reading

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Video: Cisco SD-WAN Fundamentals and Definitions

After setting the stage clarifying the current Cisco SD-WAN deployment scenarios, David Penaloza focused on definitions and fundamentals that must be considered before dealing with solutions that hide and abstract complexity like overlays, routing, and network virtualization from the network administrator.

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Up Your Productivity with these DockerCon LIVE 2020 Sessions

DockerCon LIVE 2020 is the opportunity for the Docker Community to connect while socially distancing, have fun, and learn from each other. From beginner to expert, DockerCon speakers are getting ready to share their tips and tricks for becoming more productive and finding joy while building apps.

From the Docker team, Engineer Dave Scott will share how recent updates to Docker Desktop helps to deliver quicker edit-compile-test cycles to developers. He’ll dive into the New Docker Desktop Filesharing Features that enabled this change and how to use them effectively to speed up your dev workflow.

Docker Engineer Anca Lordache will cover Best Practices for Compose-managed Python Applications, from bootstrapping your project to how to reproduce your builds and make them more optimized.

If you are a Node.js developer, Digital Ocean’s Kathleen Juell will share How to Build and Run Node Apps with Docker and Compose.

And for PHP devs, Erika Heidi from Digital Ocean will demonstrate How to Create PHP Development Environments with Docker Compose, using a Laravel 6 application as case study. She’ll demonstrate how to define and integrate services, share files between containers, and manage your environment with Docker Compose commands.

Or if it’s Continue reading

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10ish ways to explore your network with Suzieq

10ish ways to explore your network with Suzieq Suzieq is new software for Network Observability. In this blog I will be going over some of the things you can do with Suzieq to help you explore and understand your network. We have suzieq-data that you can use to investigate Suzieq....

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Trouble with troubleshooting: Network-management tools are letting IT pros down

(Root-cause analysis is one of the features least supported by network troubleshooting tools, according to Enterprise Management Associates’ recent research Network Management Megatrends 2020, that surveyed 350 network-management professionals about these tools. This article by EMA Vice President of Research Networking Shamus McGillicuddy discusses this finding and recommends how management pros should evaluate this feature. A recording of a webinar covering the research is here.)Troubleshooting is perhaps the most vital responsibility of a network operations team. When IT services are interrupted or degraded, engineers and admins race to diagnose and remediate the problem. Every minute counts, because transactions, employee productivity, and customer satisfaction all suffer while the network team is doing this work.To read this article in full, please click here

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Daily Roundup: Google Cloud Revenue Soars 52%

Google cloud revenue soared 52%; Cisco supported SONiC on 8000 series routers; and Microsoft...

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NetApp Jumps on CloudJumper

The deal combines with NetApp's recent Talon acquisition to provide an integrated "modern...

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Supply-chain woes put the brakes on hyperscale data centers

While data-center staff have been classified as essential, like medical staff and grocery store staff, construction is taking a bit of a hit. In recent weeks, Facebook, Google, and Apple have announced a slowing of construction of major new data centers in the U.S. and Europe.The problem, as it turns out, is not because construction is being ordered halted, or even due to a lack of IT equipment, but because other components of the supply chain like fiber optics, batteries, and racks are scarce, according to Rick Villars, vice president of data center and cloud research at IDC.To read this article in full, please click here

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Juniper Q1 Revenues Flat as COVID-19 Derails Supply

Juniper's supply-constrained earnings resulted in flat revenues of $998 million during the first...

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The Steady Patience Of AMD In The Datacenter

We have said more than once in recent weeks that recessions accelerate technology transitions but they do not cause them. …

The Steady Patience Of AMD In The Datacenter was written by Timothy Prickett Morgan at The Next Platform.

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Who Cares About Networking At A Time Like This

We find ourselves recording this in the middle of the coronavirus pandemic and I have to be honest that it’s been a bit challenging finding motivation to talk about networking when there’s so many other important things on people’s minds. I mean, who really cares about networking at a time like this? But as I started thinking about that very question the reality hit me, it’s everyone. Everyone cares about networking at a time like this because everyone, young and old, is using technology, networking, and specifically the Internet to hold on to whatever normalcy they can in these crazy times. The fact is that networking, and other core infrastructure skill sets have never been more important than they are right now. The real question I was challenged with wasn’t who cares about networking at a time like this, it’s who cares about a networking podcast at a time like this. I imagine some do, and some don’t, but we’re going to take today’s episode a bit lightly and just talk about what’s top of mind. We hope you’ll listen along. 

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Outro Music:
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How to Transfer Data from SD Card to Phone

These are the general steps you should typically use to transfer data from your SD card to your phone, or you could check your user manual for the particular phone’s specific steps. This is because different phones have different ways of moving their data from the SD card to the phone.

Android Phones: How to Transfer Data from SD Card to Phone

HTC Android

For a normal HTC Android, to transfer your data from your SD card to your phone, you should connect the USB to the device than to a computer. Make sure you use the USB that came with the HTC for the fastest results. Open a folder and view the files and then click OK. Get the data you want to move, cut, copy or paste the data you need from the SD card to the internal storage of the phone. From here you tap disconnect from the PC. And you enjoy your files.

LG Android

For LG Android, you tap on the file manager, go to all files, tap SD card, find the folder you want to move to your internal memory, tap the manage files icon (the down arrow) then check the box, Continue reading

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The Edge is Edgy!

This blog will provide insights to help you on your journey by exploring key considerations...

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