Tech Bytes: The Value Of Software Quality With Arista Networks (Sponsored)

Tech Bytes: The Value Of Software Quality With Arista Networks (Sponsored)

Software is essential to networking and on today's Tech Bytes podcast, sponsored by Arista, we examine how software quality affects operations, upgrades, security and more. Our guest is Doug Gourlay, VP and General Manager of Cloud Networking at Arista.

The post Tech Bytes: The Value Of Software Quality With Arista Networks (Sponsored) appeared first on Packet Pushers.

Inspur Pushes Data Center AI With Latest OCP Contributions

Nokia Wields Single Carrier Terabit Connection Power

Talking 5G and the Next Big Networking Revolution with Claus Pedersen, Hewlett Packard Enterprise

IoT roundup: Security holes abound, GE Digital makes noise and more

This week, we look at IoT security holes -- both usual and unusual -- an IIoT player makes a move, and mergers and partnerships worth noting.

IoT roundup: Security holes abound, GE Digital makes noise and more

This week, we look at IoT security holes -- both usual and unusual -- an IIoT player makes a move, and mergers and partnerships worth noting.

KDDI Molds 5G Plans With Ericsson, Nokia, and Samsung

Building Your First Certified Kubernetes Cluster On-Premises, Part 1

This is the first in a series of guest blog posts by Docker Captain Ajeet Raina diving in to how to run Kubernetes on Docker Enterprise. You can follow Ajeet on Twitter @ajeetsraina and read his blog at http://www.collabnix.com. 

There are now a number of options for running certified Kubernetes in the cloud. But let’s say you’re looking to adopt and operationalize Kubernetes for production workloads on-premises. What then? For an on-premises certified Kubernetes distribution, you need an enterprise container platform that allows you to leverage your existing team and processes. 

Enter Docker Kubernetes Service

At DockerCon 2019, Docker announced the Docker Kubernetes Service (DKS). It is a certified Kubernetes distribution that is included with Docker Enterprise 3.0 and is designed to solve this fundamental challenge.

In this blog series, I’ll explain Kubernetes support and capabilities under Docker Enterprise 3.0, covering these topics:

1. Deploying certified Kubernetes Cluster using Docker Enterprise 3.0 running on a Bare Metal System
2. Support of Kubernetes on Windows Server 2019 with Docker Enterprise 3.0
3. Implementing Persistent storage for Kubernetes workload using iSCSI
4. Implementing Cluster Ingress for Kubernetes
5. Deploying Istio Service Mesh under Docker Enterprise 3.0

So About Continue reading

¡Bienvenidos a Latinflare!

Our Story

When I first began interviewing with Cloudflare in the Spring of 2019, I came across a Cloudflare blog post announcing Proudflare, the company’s LGBTQIA+ Employee Resource Group (ERG). The post gave me a clear sense of the company’s commitment to diversity and inclusion. I could tell this was a place that values and celebrates diversity, which really appealed to me as I progressed through the interview process with Cloudflare, and ultimately accepted the role.

Fast forward to my Cloudflare new hire orientation, two weeks of training and introductions at our San Francisco HQ. We learned about the various ERGs at Cloudflare including one for Latinx employees. While I had a strong desire to be part of a Latinx ERG, it was clear that the group was actually in need of someone to lead the effort and rally the troops. At Cloudflare, we have offices across the country and around the world. I wasn’t really sure how to launch an ERG that would be global in scope. After meeting with leads from other Cloudflare ERGs, understanding the landscape, and attending an external workshop, everything started to come together.

In early August, we officially gave ourselves Continue reading

How the Linux screen tool can save your tasks – and your sanity – if SSH is interrupted

If you’ve ever had to restart a time-consuming process because your SSH session was disconnected, you might be very happy to learn about an interesting tool that you can use to avoid this problem – the screen tool.Screen, which is a terminal multiplexor, allows you to run many terminal sessions within a single ssh session, detaching from them and reattaching them as needed. The process for doing this is surprising simple and involves only a handful of commands. [ Two-Minute Linux Tips: Learn how to master a host of Linux commands in these 2-minute video tutorials ] To start a screen session, you simply type screen within your ssh session. You then start your long-running process, type Ctrl+A Ctrl+D to detach from the session and screen -r to reattach when the time is right.To read this article in full, please click here

How the Linux screen tool can save your tasks — and your sanity — if SSH is interrupted

If you’ve ever had to restart a time-consuming process because your SSH session was disconnected, you might be very happy to learn about an interesting tool that you can use to avoid this problem — the screen tool.Screen, which is a terminal multiplexor, allows you to run many terminal sessions within a single ssh session, detaching from them and reattaching them as needed. The process for doing this is surprising simple and involves only a handful of commands. [ Two-Minute Linux Tips: Learn how to master a host of Linux commands in these 2-minute video tutorials ] To start a screen session, you simply type screen within your ssh session. You then start your long-running process, type Ctrl+A Ctrl+D to detach from the session and screen -r to reattach when the time is right.To read this article in full, please click here

The Week in Internet News: The New Internet Space Race

Broadband in space: The Associated Press, via the New York Post, has a story on the new space race involving Amazon, SpaceX, and other companies. The competition is to be first to deploy new satellite networks to provide broadband service to all corners of the Earth. Still, there are some questions about these low-Earth orbit satellites, with the multi-billion-dollar cost of deployment being the biggest concern.

Secure by algorithm: Researchers at Princeton University have developed algorithms that they say can prevent hacker attacks on power grids, DownToEarth reports. The new algorithms target power spikes that could be driven by IoT-based attacks. One algorithm would prevent connections overloading by balancing power, and the other would help grids restore their functionality after an attack.

Please help: A column at ZDNet asks network operators to using existing tools to fix security problems with the Border Gateway Protocol, which routers use to tell each other the best way to route traffic. The BGP standard includes Route Origin Authorizations (ROAs) to confirm the accuracy of routing messages, but those tools aren’t as widely deployed as they could be, the column suggests.

Lost jobs: A nearly two-month Internet shutdown in the India-controlled Kashmir region Continue reading

Junos Primary and Preferred Interface Commands

This blog post was spurred on by a recent real-world experience where I had to configure a primary IP address …

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The post Junos Primary and Preferred Interface Commands appeared first on Fryguy's Blog.

Recommended Networking Resources for September 2019 Third Week

There are so many good resources for Network Engineers out there. I started to share the ones I liked on beginning of this month. Click here to see previous Networking Recommended Resources. As you know, I share 5 resource every week. There are so many in my list already, I can’t wait for the next …

Continue reading "Recommended Networking Resources for September 2019 Third Week"

The post Recommended Networking Resources for September 2019 Third Week appeared first on Cisco Network Design and Architecture | CCDE Bootcamp | orhanergun.net.

Networking in Public Clouds – New ipSpace.net Online Course

I have exciting news I’d love to share with you: we’re launching a new online course focused on networking in public clouds starting in February 2020 (I’ve been mulling over this idea and polishing the concept for almost 18 months, and finally it all came together ;)

With Go To The Cloud becoming the answer to all questions (regardless of what the question is), you can find tons of materials describing various aspects of public clouds, so you might wonder why I decided to enter the fray. The answer is simple: with everyone being focused on developers, there’s not much that an infrastructure engineer could use to help him survive when the developers move on and he’s left to manage whatever they put in place.

Small world with high risks: a study of security threats in the npm ecosystem

Small world with high risks: a study of security threats in the npm ecosystem Zimmermann et al., USENIX Security Symposium 2019

This is a fascinating study of the npm ecosystem, looking at the graph of maintainers and packages and its evolution over time. It’s packed with some great data, and also helps us quantify something we’ve probably all had an intuition for— the high risks involved in depending on a open and fast-moving ecosystem. One the key takeaways for me is the concentration of reach in a comparatively small number of packages and maintainers, making these both very high value targets (event-stream, it turns out, wouldn’t even have made the top-1000 in a list of ranked targets!), but also high leverage points for defence. We have to couple this of course with an exceedingly long tail.

The npm ecosystem

As the primary source of third-party JavaScript packages for the client-side, server-side, and other platforms, npm is the centrerpiece of a large and important software ecosystem.

Npm is an open ecosystem hosting a collection of over 800,000 packages as of February 2019, and it continues to grow rapidly.

To share a package on npm, a maintainer creates Continue reading

Serverless Security Threats Loom as Enterprises Go Cloud Native

Worth Reading: Koding Academies

Every few weeks I stumble upon an article (or twitter storm) in which someone claims you don’t need formal education to get started as a Software Engineer (or whatever else) - all you need is a coding academy/bootcamp and you're all set.

George V. Neville-Neil wrote a hilarious rebuttal of this idea followed by some pretty good advice. Hope you’ll enjoy it as much as I did ;)

Run a script on virtual machines when the host is shut down

I want to show you how to configure a host server so, when it is shut down, it executes a script that runs commands on any running virtual machines before the host tries to stop them. I will configure the host server to wait until the script completes configuring the virtual machines before continuing with the shutdown process, shutting down the virtual machines, and eventually powering off.

I had to learn how Systemd service unit configuration files work and some more details about how Libvirt is configured in different Linux distributions. Read on to see the solution, plus some details about how to test the solution in Ubuntu and CentOS.

Solution Summary

Create a new Systemd service named graceful-shutdown that runs a script when the host system shuts down, but before Libvirt shuts down any virtual machines. Ensure that the libvirt-guests service is already started and enabled, and is configured appropriately.

The graceful-shutdown.service unit configuration file

Create a new Systemd unit configuration file named graceful-shutdown.service and save it in the directory, /etc/systemd/system, where it is advised you put custom configuration files.

For example:

# vi /etc/systemd/system/graceful-shutdown.service

Enter the following text into the file, then save it:

 Continue reading