0

Building an elastic query engine on disaggregated storage

0

Essential things to know about container networking

Containers have emerged over the past several years to provide an efficient method of storing and delivering applications reliably across different computing environments. By containerizing an application platform and its dependencies, differences in OS distributions and underlying infrastructures are abstracted away. Networking has emerged as a critical element within the container ecosystem, providing connectivity between containers running on the same host as well as on different hosts, says Michael Letourneau, an IT architect at Liberty Mutual Insurance. "Putting an application into a container automatically drives the need for network connectivity for that container," says Letourneau, whose primary focus is on building and operating Liberty Mutual's container platform. To read this article in full, please click here

0

Isambard 2 Is About Driving Technology Diversity

It’s been just more than a decade since Arm executives began to talk about bringing the company’s system-on-a-chip (SoC) architecture, which has long been the dominant design for processors found in billions of smartphones and other mobile device, into the datacenter. …

Isambard 2 Is About Driving Technology Diversity was written by Jeffrey Burt at The Next Platform.

0

Modifying Visual Studio Code’s Bracketing Behavior

There are two things I’ve missed since I switched from Sublime Text to Visual Studio Code (I switched in 2018). First, the speed. Sublime Text is so much faster than Visual Studio Code; it’s insane. But, the team behind Visual Studio Code is working hard to improve performance, so I’ve mostly resigned myself to it. The second thing, though, was the behavior of wrapping selected text in brackets (or parentheses, curly braces, quotes, etc.). That part has annoyed me for two years, until this past weekend I’d finally had enough. Here’s how I modified Visual Studio Code’s bracketing behaviors.

Before I get into the changes, allow me to explain what I mean here. With Sublime Text, I used a package (similar to an extension in the VS Code world) called Bracketeer, and one of the things it allowed me to do was highlight a section of text, wrap it in brackets/braces/parentheses, and then—this part is the missing bit—it would deselect the selected text and place my insertion point outside the closing character. Now, this doesn’t sound like a big deal, but let me assure you that it is. I didn’t have to use any extra keystrokes to keep Continue reading

0

Fixing a Thinkpad T420 battery problem on Linux

I upgraded my T420 because Ubuntu Mate 19.10 now supports the Nvidia Optimus drivers and includes a utility that lets me switch between Intel and Nvidia graphics cards. However, the upgrade seemed to break the power management on my laptop. When running on the battery, the laptop would suddenly lose power after only 10 minutes, even when the battery still shows ninety percent charge.

I installed Linux Advanced Power Management, TLP. TLP solved my problem. Also, for good measure, I upgraded the BIOS because, while troubleshooting this issue, I discovered is was very out of date.

In his post, I describe how to install and configure TLP and how to upgrade the BIOS on a Lenovo Thinkpad T420.

Install TLP

The Mate Power Management utility is part of the Mate desktop environment and provides basic configurations for power management. I don’t know why installing TLP solved my battery problem. I can only suggest that, if you are seeing a similar problem with your battery, try installing TLP before you spend money on a new battery.

TLP is in the Ubuntu repositories. Install TLP using the following command:

$ sudo apt update
$ sudo apt install tlp tlp-rdw
$ sudo  Continue reading

0

CEX (Code EXpress) 06. Look into your dictionary.

Hello my friend,

We have discussed so far ordinary variables in string, numeric and Boolean formats and list variables. Today we’ll close the review of the variables by covering the last, and definitely not least, type of variables called Python dictionary. In fact, this one of the most useful for us from the network automation perspective.

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?

The Python dictionary is a structured data. At a glance it might be similar to the list from the syntax prospective. However, it has a significant difference: in the list each element has an index (numerical value starting from 0), whereas in the dictionary each element has a key (string value you define based on your logic). Continue reading

0

Why the 100th Anniversary of Women’s Right to Vote in the U.S. is Important to Celebrate on International Women’s Day

Seven months ago, I joined Cloudflare to work on the Public Policy Team focusing on our democracy projects such as Project Galileo, Athenian Project and Cloudflare for Campaigns. Since I joined the team, I have learned a lot about how important cybersecurity protections are for organizations that are the target of sophisticated cyberattacks, while also learning about the complex election security environment in the United States and abroad.

It seems fitting that on International Women’s Day, a day people throughout the world are celebrating the achievements of women, we also celebrate the Centennial Anniversary of the Women’s Suffrage Movement which was the tipping point that gave many women voting rights in the United States.

Since I have been working on Cloudflare’s election security projects, this day means something extra special to me and many of my colleagues who believe that voting is the cornerstone of democracy and that having access to information regarding voting and elections is essential.

Here are five reflections that I want to share on International Women’s Day and the Centennial Anniversary of the Nineteenth Amendment which granted women the right to vote in the United States:

1. The Women’s Suffrage Movement in the United States was Continue reading

0

Microsoft, Intel, Fortanix Execs Get Confidential at RSA

“Confidential computing is one of the most important and relevant new paradigms that you folks...

Read More »

0

The Serious Business Of Being A Server OEM

Not everybody is a hyperscaler or large public cloud builder, and no two companies are happier about that than Dell Technologies and Hewlett Packard Enterprise, the two largest original equipment manufacturers in the world for servers and storage and also the two companies that chased plenty of sales at these webscale datacenter operators in years gone by but which have learned, of necessity, to walk away from deals where they can’t make money or even lose money. …

The Serious Business Of Being A Server OEM was written by Timothy Prickett Morgan at The Next Platform.

0

Daily Roundup: OCP Blesses AT&T’s Disaggregated Security

AT&T works with Palo Alto Networks and Broadcom on a Disaggregated Scalable Firewall; serious...

Read More »

0

OCP Blesses AT&T’s Disaggregated Security Architecture Push

This programmable fabric with embedded security functions will allow network operators to deploy...

Read More »

0

Intel Vulnerability Serious But Unlikely, Experts Say

The bug would allow an attacker to exploit a known vulnerability in Intel's CSME to gain access to...

Read More »

0

How Cloudflare keeps employees productive from any location

Cloudflare employs more than 1,200 people in 13 different offices and maintains a network that operates in 200 cities. To do that, we used to suffer through a traditional corporate VPN that backhauled traffic through a physical VPN appliance. It was, frankly, horrible to work with as a user or IT person.

With today’s mix of on-prem, public cloud and SaaS and a workforce that needs to work from anywhere, be it a coffee shop or home, that model is no longer sustainable. As we grew in headcount, we were spending too much time resolving VPN helpdesk tickets. As offices around the world opened, we could not ask our workforce to sit as every connection had to go back through a central location.

We also had to be ready to scale. Some organizations are currently scrambling to load test their own VPN in the event that their entire workforce needs to work remotely during the COVID-19 outbreak. We could not let a single physical appliance constrain our ability to deliver 26M Internet properties to audiences around the world.

To run a network like Cloudflare, we needed to use Cloudflare’s network to stay fast and secure.

We built Cloudflare Access, part Continue reading

0

Huawei backdoors explanation, explained

Today Huawei published a video explaining the concept of "backdoors" in telco equipment. Many are criticizing the video for being tone deaf. I don't understand this concept of "tone deafness". Instead, I want to explore the facts.

Does the word “#backdoor” seem frightening? That’s because it’s often used incorrectly – sometimes to deliberately create fear. Watch to learn the truth about backdoors and other types of network access. #cybersecurity pic.twitter.com/NEUXbZbcqw

— Huawei (@Huawei) March 4, 2020

This video seems in response to last month's story about Huawei misusing law enforcement backdoors from the Wall Street Journal. All telco equipment has backdoors usable only by law enforcement, the accusation is that Huawei has a backdoor into this backdoor, so that Chinese intelligence can use it.

That story was bogus. Sure, Huawei is probably guilty of providing backdoor access to the Chinese government, but something is deeply flawed with this particular story.

We know something is wrong with the story because the U.S. officials cited are anonymous. We don't know who they are or what position they have in the government. If everything they said was true, they wouldn't insist on being anonymous, but would stand up Continue reading

0

SD-WAN Summit 2020 : Call for Proposals

The 5th SD-WAN Summit will take place from 22nd to 24th September 2020. The SD-WAN Summit will...

Read More »

0

Heavy Networking 505: Achieving Consistent Multi-Cloud Network Policy With VeloCloud (Sponsored)

Today's Heavy Networking dives into a multitude of topics with sponsor VeloCloud (a VMware company), including getting consistent network policies in a multi-cloud world, the emerging SASE category and what it means for SD-WAN and security, and how VeloCloud is incorporating analytics from Nyansa, which VMware recently acquired. Our guest is Craig Connors, Chief Architect at VeloCloud.

0

Heavy Networking 505: Achieving Consistent Multi-Cloud Network Policy With VeloCloud (Sponsored)

Today's Heavy Networking dives into a multitude of topics with sponsor VeloCloud (a VMware company), including getting consistent network policies in a multi-cloud world, the emerging SASE category and what it means for SD-WAN and security, and how VeloCloud is incorporating analytics from Nyansa, which VMware recently acquired. Our guest is Craig Connors, Chief Architect at VeloCloud.

The post Heavy Networking 505: Achieving Consistent Multi-Cloud Network Policy With VeloCloud (Sponsored) appeared first on Packet Pushers.

0

CentOS 8

CentOS 8 / RHEL 8 come with Linux kernel version 4.18. This version of the kernel includes efficient in-kernel packet sampling that can be used to provide network visibility for production servers running network heavy workloads, see Berkeley Packet Filter (BPF).
This article provides instructions for installing and configuring the open source Host sFlow agent to remotely monitor servers using the industry standard sFlow protocol. The sFlow-RT real-time analyzer is used to demonstrate the capabilities of sFlow telemetry.

Find the latest Host sFlow version on the Host sFlow download page.

wget https://github.com/sflow/host-sflow/releases/download/v2.0.26-3/hsflowd-centos8-2.0.26-3.x86_64.rpm
sudo rpm -i hsflowd-centos8-2.0.26-3.x86_64.rpm
sudo systemctl enable hsflowd

The above commands download and install the software.

sflow {
  collector { ip=10.0.0.30 }
  pcap { speed=1G-1T }
  tcp { }
  systemd { }
}

Edit the /etc/hsflowd.conf file. The above example sends sFlow to a collector at 10.0.0.30, enables packet sampling on all network adapters, adds TCP performance information, and exports metrics for Linux services. See Configuring Host sFlow for Linux for the complete set of configuration options.

sudo systemctl restart hsflowd

Restart the Host sFlow daemon to Continue reading

0

Weekly Wrap: AT&T Puts More Jobs on the Chopping Block

SDxCentral Weekly Wrap for March 6, 2020: The telecom giant cited "headcount rationalization" as a...

Read More »

0

There Are No More Green Fields

I’ve looked at quite a few pieces of technology in the past few years. Some have addressed massive issues that I had when I was a practicing network engineer. Others have shown me new ways to do things I never thought possible. But one category of technology still baffles me to this day: The technology that assumes greenfield deployment.

For those not familiar, “greenfield” is a term that refers to a project that is built on a site completely from scratch. It originally comes from a day when the project in question was a factory or other capital improvement that was literally being built in a field with green grass growing on top. The alternative to that project was one where something was being built in a location where there was existing infrastructure or other form of site pollution. And, of course because everyone in humanity never gets older than twelve, this is called a “brownfield” site.

Getting back to the technology side of things, let’s talk about greenfield deployments. When was the last time you walked into a building and found zero technology of any kind? Odds are good that’s not the case. Sure, there are some SMBs that Continue reading