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Multi-Platform Docker Builds

This is a guest post from Docker Captain Adrian Mouat who is Chief Scientist at Container Solutions, a cloud-native consultancy and Kubernetes Certified Service Provider. Adrian is the author of “Using Docker,” published by O’Reilly Media. He is currently developing Trow, a container image registry designed to securely manage the flow of images in a Kubernetes cluster. Adrian is a regular conference speaker and trainer and he has spoken at several events including KubeCon EU, DockerCon, CraftConf, TuringFest and GOTO Amsterdam.

Docker images have become a standard tool for testing and deploying new and third-party software. I’m the main developer of the open source Trow registry and Docker images are the primary way people install the tool. If I didn’t provide images, others would end up rolling their own which would duplicate work and create maintenance issues.

By default, the Docker images we create run on the linux/amd64 platform. This works for the majority of development machines and cloud providers but leaves users of other platforms out in the cold. This is a substantial audience – think of home-labs built from Raspberry Pis, companies producing IoT devices, organisations running on IBM mainframes and clouds utilising low-power arm64 chips. Users of Continue reading

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Comcast’s Jeffrey Lewis: ‘Job No. 1 Is Customer Experience’

Comcast's Jeffery Lewis sat down to share his thoughts on ActiveCore and how it is improving the...

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Network Break 277: Juniper’s Mist Systems Announces Premium Analytics; Cato Launches Clientless Remote Access

Today's Network Break podcast examines a new analytics service from Juniper's Mist Systems for engineers and lines of business, a new clientless remote access service from Cato Networks, the impact of increased traffic on Facebook and cloud services, how co-lo sites are restricting physical access, and more.

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Network Break 277: Juniper’s Mist Systems Announces Premium Analytics; Cato Launches Clientless Remote Access

Today's Network Break podcast examines a new analytics service from Juniper's Mist Systems for engineers and lines of business, a new clientless remote access service from Cato Networks, the impact of increased traffic on Facebook and cloud services, how co-lo sites are restricting physical access, and more.

The post Network Break 277: Juniper’s Mist Systems Announces Premium Analytics; Cato Launches Clientless Remote Access appeared first on Packet Pushers.

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A Hackathon To Battle The Coronavirus Pandemic

Public-private partnerships are common when responding to national or international crises and the current coronavirus pandemic that is expanding around the globe is no different. …

A Hackathon To Battle The Coronavirus Pandemic was written by Jeffrey Burt at The Next Platform.

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Heavy Networking 508: Should Network Engineers Learn Advanced Programming Languages?

Today's Heavy Networking explores what it's like to get deeply into programming while still being attached to the world of networking. We discuss the transition from day-to-day networking tasks to spending more time with code, the role of programming in automation, and more. Our guests are Matt Stone, Brent Salisbury, Dave Tucker, and Daryn Johnson.

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Heavy Networking 508: Should Network Engineers Learn Advanced Programming Languages?

Today's Heavy Networking explores what it's like to get deeply into programming while still being attached to the world of networking. We discuss the transition from day-to-day networking tasks to spending more time with code, the role of programming in automation, and more. Our guests are Matt Stone, Brent Salisbury, Dave Tucker, and Daryn Johnson.

The post Heavy Networking 508: Should Network Engineers Learn Advanced Programming Languages? appeared first on Packet Pushers.

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Introducing Quicksilver: Configuration Distribution at Internet Scale

Cloudflare’s network processes more than fourteen million HTTP requests per second at peak for Internet users around the world. We spend a lot of time thinking about the tools we use to make those requests faster and more secure, but a secret-sauce which makes all of this possible is how we distribute configuration globally. Every time a user makes a change to their DNS, adds a Worker, or makes any of hundreds of other changes to their configuration, we distribute that change to 200 cities in 90 countries where we operate hardware. And we do that within seconds. The system that does this needs to not only be fast, but also impeccably reliable: more than 26 million Internet properties are depending on it. It also has had to scale dramatically as Cloudflare has grown over the past decade.

Historically, we built this system on top of the Kyoto Tycoon (KT) datastore. In the early days, it served us incredibly well. We contributed support for encrypted replication and wrote a foreign data wrapper for PostgreSQL. However, what worked for the first 25 cities was starting to show its age as we passed 100. In the summer of 2015 we decided to Continue reading

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Uneven or Unbalanced Sound Levels on AirPods and Microphones on MacOS

Random and hard to know

The post Uneven or Unbalanced Sound Levels on AirPods and Microphones on MacOS appeared first on EtherealMind.

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5 metrics you need to know about your backup and recovery system

Finding out whether backup and recovery systems work well is more complicated than just knowing how long backups and restores take; agreeing to a core set of essential metrics is the key to properly judging your system to determine if it succeeds or needs a redesign.Here are five metrics every enterprise should gather in order to insure that their systems meet the needs of the business.Storage capacity and usage Let's start with a very basic metric: Does your backup system have enough storage capacity to meet your current and future backup and recovery needs? Whether you are talking a tape library or a storage array, your storage system has a finite amount of capacity, and you need to monitor what that capacity is and what percentage of it you're using over time.To read this article in full, please click here

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Webinars in April 2020

With webinars being the only way to deliver training content these days, we’ll run one every week in April 2020:

• Starting on April 2nd I’ll talk about one of my favorite topics: switching, bridging and routing, covering almost everything ever invented from virtual circuits and source route bridging to so-called routing at layer-2 and IP forwarding based on host routes;

• I was planning to update the Introduction to Containers and Docker material for ages… but then had to move the December 2019 workshop to March 2020, only to cancel it a week before the coronavirus exploded for real in Switzerland. I hope I’ll manage to deliver the online version on April 9th ;)

• Dinesh Dutt is back on April 16th with an update of Network Automation Tools webinar, in which he’ll cover (among other things) the new network automation tools launched since we did the original webinar in 2016.

• On April 23rd Pete Lumbis plans to dive as deep into the intricacies of switching ASICs as he can without violating an NDA ;)

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Parallel Wireless CEO: Don’t Forget About Radios

“Everyone wants to forget the radios, and the radios are what makes wireless wireless," Steve...

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CEX (Code EXpress) 09. For loop + if conditional = while loop. And the most popular math functions.

Hello my friend,

So far you have learned about the for loop and if conditional. Both of these tools are very useful and have a wide area of the applicability inside the network automation filed. But what if we need to do some activities in your Python code continuously until a certain condition becomes False? The answer you will find in this blogpost.

Network automation training – boost your career

Don’t wait to be kicked out of IT business. Join our network automation training to secure your job in future. Come to NetDevOps side.

How does the training differ from this blog post series? Here you get the basics and learn some programming concepts in general, whereas in the training you get comprehensive set of knowledge with the detailed examples how to use Python for the network and IT automation. You need both.

What are we going to do today?

While loop is a specific type of the loop in Python, which is being executed infinitely while the associated condition is True. All the knowledge you got about the if conditionals are applicable here as well.

Read the if conditional blogpost for more details.

Therefore, while instruction requires careful planing Continue reading

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The 5G Economic Impact

Organizations are predicting a multi-trillion-dollar boost from 5G deployments, though...

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Migrating from VPN to Access

With so many people at Cloudflare now working remotely, it's worth stepping back and looking at the systems we use to get work done and how we protect them. Over the years we've migrated from a traditional "put it behind the VPN!" company to a modern zero-trust architecture. Cloudflare hasn’t completed its journey yet, but we're pretty darn close. Our general strategy: protect every internal app we can with Access (our zero-trust access proxy), and simultaneously beef up our VPN’s security with Spectrum (a product allowing the proxying of arbitrary TCP and UDP traffic, protecting it from DDoS).

Before Access, we had many services behind VPN (Cisco ASA running AnyConnect) to enforce strict authentication and authorization. But VPN always felt clunky: it's difficult to set up, maintain (securely), and scale on the server side. Each new employee we onboarded needed to learn how to configure their client. But migration takes time and involves many different teams. While we migrated services one by one, we focused on the high priority services first and worked our way down. Until the last service is moved to Access, we still maintain our VPN, keeping it protected with Spectrum.

Some of our services didn't Continue reading

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Dogfooding from Home: How Cloudflare Built our Cloud VPN Replacement

It’s never been more crucial to help remote workforces stay fully operational — for the sake of countless individuals, businesses, and the economy at large. In light of this, Cloudflare recently launched a program that offers our Cloudflare for Teams suite for free to any company, of any size, through September 1. Some of these firms have been curious about how Cloudflare itself uses these tools.

Here’s how Cloudflare’s next-generation VPN alternative, Cloudflare Access, came to be.

Rewind to 2015. Back then, as with many other companies, all of Cloudflare’s internally-hosted applications were reached via a hardware-based VPN. When one of our on-call engineers received a notification (usually on their phone), they would fire up a clunky client on their laptop, connect to the VPN, and log on to Grafana.

It felt a bit like solving a combination lock with a fire alarm blaring overhead.

But for three of our engineers enough was enough. Why was a cloud network security company relying on clunky on-premise hardware?

And thus, Cloudflare Access was born.

A Culture of Dogfooding

Many of the products Cloudflare builds are a direct result of the challenges our own team is looking to address, and Access is a Continue reading

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Daily Roundup: VMware Pulls FY21 Forecast

VMware withdrew FY21 guidance citing coronavirus concerns; Kubernetes 1.18 ramped up Windows...

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Amazon, Microsoft Dethroned in China’s Public Cloud Market

In China’s case, being bigger than the rest plays to its advantage in positioning three Chinese...

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Security Experts Battle Hackers, COVID-19 Cyberattacks

Threat researchers at Microsoft, ClearSky, and Okta are among the hundreds of security experts...

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Pushing PCI-Express Fabrics Up To The Next Level

While the long overdue upgrade to PCI-Express 4.0 is finally coming to servers, allowing for high bandwidth links between processors and peripherals. …

Pushing PCI-Express Fabrics Up To The Next Level was written by Timothy Prickett Morgan at The Next Platform.