Designing Your First App in Kubernetes, Part 2: Setting up Processes

I reviewed the basic setup for building applications in Kubernetes in part 1 of this blog series. In this post, I’ll explain how to use pods and controllers to create scalable processes for managing your applications.

Processes as Pods & Controllers in Kubernetes

The heart of any application is its running processes, and in Kubernetes we fundamentally create processes as pods. Pods are a bit fancier than individual containers, in that they can schedule whole groups of containers, co-located on a single host, which brings us to our first decision point:

Decision #1: How should our processes be arranged into pods?

The original idea behind a pod was to emulate a logical host – not unlike a VM. The containers in a pod will always be scheduled on the same Kubernetes node, and they’ll be able to communicate with each other via localhost, making pods a good representation of clusters of processes that need to work together closely. 

But there’s an important consideration: it’s not possible to scale individual containers in a pod separately from each other. If you need to scale Continue reading

How Operators Can Work With Developers to Monetize Edge

In Colombia: Latin American Summit on Community Networks

The University of Cundinamarca will host the Second Latin American Summit of Community Networks September 24-28. The event is organized by the Community Networks Special Interest Group, the Fusa Libre Collective, and the Colombia Chapter, with backing from the Internet Society.

The Summit, which will include representatives of 24 organizations that operate community networks in different countries, is meant to be a resource for the region. On the first day there will be 12 presentations that will share experiences from projects developed in countries such as Argentina, Colombia, Ecuador, and Mexico.

During the rest of the Summit, attendees will explore topics that will help strengthen their projects and enhance their development. The topics addressed in these working sessions have been defined collaboratively: gender-related issues, regulatory frameworks, local content, methodological strategies for community work, and actions for the promotion and deployment of new community networks. It could not be otherwise in a community where collaboration has stood out. In addition, attendees can share their experiences and best practices.

Although many people are familiar with the term “community networks,” their collaborative nature can be a surprise to those who are learning about how they function. Seeing people working together to plan, Continue reading

Heavy Networking 473: Synthetic Transactions, SD-WAN Readiness, And Internet Outage Autopsies With ThousandEyes (Sponsored)

ThousandEyes sponsors today's Heavy Networking for a wide-ranging episode that explores a new synthetic transaction monitoring feature, discusses why performance monitoring is essential to prepare for SD-WAN rollouts, and walks through postmortems on 2019's biggest Internet outages. Guests Alex Henthorn-Iwane and Angelique Medina join us.

The post Heavy Networking 473: Synthetic Transactions, SD-WAN Readiness, And Internet Outage Autopsies With ThousandEyes (Sponsored) appeared first on Packet Pushers.

Europeans Push FPGA-Powered Exascale Prototype Out the Door

The European Exascale System InterconNect and Storage (ExaNeSt) project has wrapped up, having completed development of its prototype system and run a series of application benchmarks on it. …

Europeans Push FPGA-Powered Exascale Prototype Out the Door was written by Michael Feldman at The Next Platform.

Introducing Red Hat Ansible Automation Platform

We are excited to introduce Red Hat Ansible Automation Platform, a new offering that combines the simple and powerful Ansible solutions with new capabilities for cross-team collaboration, governance and analytics, resulting in a platform for building and operating automation at scale. 

Over the past several years, we’ve listened closely to the community, customers and partners and their needs. We’ve also looked carefully at how the market is changing and where we see automation headed. One of the most common requests we’ve heard from customers is the need to bring together separate teams using automation. Today’s organizations are often automating different areas of their business (such as on-premises IT vs. cloud services vs. networks) each with their own set of Ansible Playbooks and little collaboration between the different domains. While this may still get the task accomplished, it can be a barrier to realizing the full value of automation. 

We’ve also found that even within a single organization, teams are often at different stages of automation maturity. Organizations are often recreating the wheel - automating processes that have already been done.

Organizations need a solution they can use across teams and domains, and a solution they can Continue reading

Inside the Web Browser’s Performance API

Building a beautiful, feature-rich website is easier than ever before. Not long ago, you’d have to fire up a text editor and hand-craft a lot of HTML, CSS, and JavaScript. Today, you can use WYSIWYG tools and third-party libraries that make development much simpler. The flip side of this is that it can be hard to see everything that’s going into your website — and the performance can suffer.

The good news is that modern web browsers expose lots of performance data that can help you understand how your web page performs. With the launch of Browser Insights today, we can analyze the performance from the perspective of the web browser and what the end user actually experiences. In this post, we’ll dive into how we think about performance and utilize the timing APIs in the web browser.

How web browsers measure performance

In the old days, the only way for a developer to profile performance was to intercept requests and measure the time from the beginning of the page load until the end of the load event.

Today, we can use Web APIs that are supported by modern browsers. This is part of the web standard called the Performance Continue reading

Introducing Browser Insights

Speed matters. We know that when your website or app gets faster, users have a better experience and you get more conversions and more revenue. At Cloudflare, we spend our days obsessing about speed and building new features to squeeze out as much performance as possible.

But to improve speed, you first need to measure it. That’s why we’re launching Browser Insights: a new tool that measures the performance of your website from the perspective of your users. Browser Insights lets you dive in to understand where, when, and why web pages are slow. And you can enable it today, for free, with one click.

Why did we build Browser Insights?

Let’s say you run an e-commerce site, and you want to make your conversion rates better. You’ve noticed that there’s a lot of traffic from visitors in Peru, but they have worse conversion than users in North America. Maybe you theorize that it takes a long time to load your checkout page, which causes customers to drop off before checking out. How would you verify that this is happening?

There are a few ways you could do this: you could check your server logs to look at timing Continue reading

BrandPost: How a business-driven SD-WAN can deliver a multiplier effect on your cloud investments

I just left another CIO meeting with a Fortune 100 prospect who was wondering, “why Silver Peak versus the 800-pound gorilla in the networking space that offers several different ‘SD-WAN’ offerings?” The challenge she faced wasn’t about whether it was the best solution or not - Silver Peak cruised through the technical evaluation, easily winning the technical recommendation. What she really wanted to know is if she should trust the future of her next Wide Area Network (WAN) to a private company.This is a challenge we at Silver Peak face in seemingly every account we earn. The technical part isn’t the hard part, as we consistently win product evaluations and bakeoffs. What we have to prove is that it’s actually less risky to choose Silver Peak as the platform to build their next generation WAN on when compared to trying to stretch a Cisco router-centric model. To read this article in full, please click here

Cisco ACI – API Calls vs JSON POST

API Calls method The fancy way of configuring Cisco ACI Fabric is by using Python script for generating API calls. Those API calls are then used to configure Cisco ACI by pushing those calls to APIC controller using POSTMAN (or similar tool). Configuration changes done this way are those that you are doing often and without much chance of making mistakes. You write a Python script and that script will take your configuration variables and generate API call that will configure the system quickly and correctly every time. The thing is that you need to take the API call example

The post Cisco ACI – API Calls vs JSON POST appeared first on How Does Internet Work.

What do I run at home?

I have decided to do a little series on “What I run at home” with regards to networking, labs, and …

Continue reading →

The post What do I run at home? appeared first on Fryguy's Blog.

vlog. Episode 6. Closed-loop automation [LIVE]

Hello my friend,

This vlog episode I’m alone. Eh… But I have an opportunity to share with you the talk I’ve delivered an the NetLdn #6 event two weeks ago. Now you have an opportunity to watch this talk as well!

In this episode you will see the high-level description of the Data Centre Fabric Project I’ve been doing this year with the focus on the closed-loop automation using open-source tools. Additionally, you will see LIVE DEMO of the closed-loop automation as an extension to ZTP, where the full data centre fabric running Cumulus switches will be provisioned from zero to full operational state.

If you’ve recently read about Mellanox/Cumulus, the same approach perfectly fits this pair.

But it is not only about Cumulus. Any network supplier we’ve discussed (Arista, Nokia, Cisco and much more) can be provisioned in such a way, and you can find the sample templates in the GitHub repo.

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On the Usability of OSI Layered Networking Model

Two weeks ago I replied to a battle-scar reaction to 7-layer OSI model, this time I’ll address a much more nuanced view from Russ White. Please read his article first (as always, it’s well worth reading) and when you come back we’ll focus on this claim:

The OSI Model does not accurately describe networks.

Like with any tool in your toolbox, you can view the 7-layer OSI model in a number of ways. In the case of OSI model, it can be used:

On the Usability of OSI Layered Networking Model

Two weeks ago I replied to a battle-scar reaction to 7-layer OSI model, this time I’ll address a much more nuanced view from Russ White. Please read his article first (as always, it’s well worth reading) and when you come back we’ll focus on this claim:

The OSI Model does not accurately describe networks.

Like with any tool in your toolbox, you can view the 7-layer OSI model in a number of ways. In the case of OSI model, it can be used:

BrandPost: Take the Intelligent Route with Consumption-Based Storage

Data is at the center of everything we do today. It’s a massive resource that you can use to fuel innovation, steer the business with greater insights, and rev up people to do their best work. But data overload, unpredictable workload demands, and growing maintenance and security requirements can stall important initiatives when storage systems lack the performance, scale, agility, and e­fficiency to keep up.But there’s good news. The agility and economics of HPE storage combined with HPE GreenLake let you run IT like a finely tuned engine: Improve economics with no up-front payment and 100% economic storage utilization Reduce risk of running out of capacity or wasting money by overprovisioning Accelerate value with on-demand storage solutions aligned to your workload needs Ensure control over performance, security, and compliance. Click here to view the complete infographic. To read this article in full, please click here

BrandPost: How HPE Metering Technology Delivers a Better Way to Consume IT

HPE GreenLake is a true pay-as-you-go, consumption-based approach to hybrid IT. It’s different from anything else on the market, so it’s not surprising that customers tend to have lots of questions. Here are some that I hear quite often:Do I have to purchase the infrastructure?No. HPE GreenLake is an “as-a-service” model, so we own and manage the equipment for you at your site, and we provide a buffer of capacity right-sized to your business. Then we measure how much you use, and we charge based on that usage.What if I run out of capacity?To read this article in full, please click here

How HPE Metering Technology Delivers a Better Way to Consume IT

HPE GreenLake is a true pay-as-you-go, consumption-based approach to hybrid IT. It’s different from anything else on the market, so it’s not surprising that customers tend to have lots of questions. Here are some that I hear quite often:Do I have to purchase the infrastructure?No. HPE GreenLake is an “as-a-service” model, so we own and manage the equipment for you at your site, and we provide a buffer of capacity right-sized to your business. Then we measure how much you use, and we charge based on that usage.What if I run out of capacity?To read this article in full, please click here

Take the Intelligent Route with Consumption-Based Storage

Data is at the center of everything we do today. It’s a massive resource that you can use to fuel innovation, steer the business with greater insights, and rev up people to do their best work. But data overload, unpredictable workload demands, and growing maintenance and security requirements can stall important initiatives when storage systems lack the performance, scale, agility, and e­fficiency to keep up.But there’s good news. The agility and economics of HPE storage combined with HPE GreenLake let you run IT like a finely tuned engine: Improve economics with no up-front payment and 100% economic storage utilization Reduce risk of running out of capacity or wasting money by overprovisioning Accelerate value with on-demand storage solutions aligned to your workload needs Ensure control over performance, security, and compliance. Click here to view the complete infographic. To read this article in full, please click here

BrandPost: More Elbow-Room for Innovation: Reducing the Ops Load with HPE Adaptive Management Services

We’re hearing a lot these days about how CIOs are becoming more strategic partners with executive management – how IT is moving closer to the core of the business and earning a seat at the table in strategy discussions. I’m a bit skeptical that it’s happening on anything like a broad scale. It’s certainly true that there’s an awareness that IT is “mission critical,” that you absolutely cannot afford to have the network go down even for a second, or a security slip-up that results in losing hundreds of thousands of credit card records. Those are hugely important discussions, but they’re not seen as directly related to business outcomes.Many in the C-Suite still see at least a percentage of IT expenditures as almost like a tax on the business. When IT leaders get into investment conversations, their colleagues are often about as excited as the rest of us are when it’s time to pay our personal income tax bill.To read this article in full, please click here

BrandPost: Optimizing your Hybrid Cloud Environment: Key Considerations for Workload Placement, Cost Control, and Cloud Management

 This video is hosted by Owen Rogers of 451 Research and discusses key considerations for workload placement, cost control, and management of hybrid cloud environments. It is based on research conducted for HPE GreenLake Hybrid Cloud. Click here to watch the video. To read this article in full, please click here