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Kubernetes Unpacked 014: Using GitOps And AKS To Build And Deploy Applications

In today's episode of Kubernetes Unpacked, Michael catches up with Steve Buchanan, Principal Program Manager at Microsoft, to talk about using GitOps and Azure Kubernetes Service (AKS) to automate the building and deployment of applications. Microsoft has been working incredibly hard on AKS, including integrating different tools and platforms to make the lives of DevOps and Platform Engineers easier.

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The Case for Hybrid Networks: Wired + Wireless

Do we foresee a world where one day all IT will be wireless – or will ethernet continue to coexist with it?

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IPv6 Buzz 115: DNS And IPv6

In this episode, Ed, Scott, and Tom talk about DNS and IPv6. We cover legacy IPv6 brokeness and DNS, how DNS performs over v6, and how DNS works with v6-only networks.

The post IPv6 Buzz 115: DNS And IPv6 appeared first on Packet Pushers.

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IPv6 Buzz 115: DNS And IPv6

In this episode, Ed, Scott, and Tom talk about DNS and IPv6. We cover legacy IPv6 brokeness and DNS, how DNS performs over v6, and how DNS works with v6-only networks.

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IPv6 flow analytics with Containerlab

CONTAINERlab is a Docker orchestration tool for creating virtual network topologies. The sflow-rt/containerlab project contains a number of topologies demonstrating industry standard streaming sFlow telemetry with realistic data center topologies. This article extends the examples in Real-time telemetry from a 5 stage Clos fabric and Real-time EVPN fabric visibility to demonstrate visibility into IPv6 traffic flows.

docker run --rm -it --privileged --network host --pid="host" \
  -v /var/run/docker.sock:/var/run/docker.sock -v /run/netns:/run/netns \
  -v $(pwd):$(pwd) -w $(pwd) \
  ghcr.io/srl-labs/clab bash

Run the above command to start Containerlab if you already have Docker installed. Otherwise, Installation provides detailed instructions for a variety of platforms.

curl -O https://raw.githubusercontent.com/sflow-rt/containerlab/master/clos5.yml

Download the topology file for the 5 stage Clos fabric shown above.

containerlab deploy -t clos5.yml

Finally, deploy the topology.

The screen capture shows a real-time view of traffic flowing across the network during an iperf3 test. Click on the sFlow-RT Apps menu and select the browse-flows application, or click here for a direct link to a chart with the settings shown above.

docker exec -it clab-clos5-h1 iperf3 -c 2001:172:16:4::2

Each of the hosts in the network has an iperf3 server, so running the above command will test bandwidth between Continue reading

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Researchers found security pitfalls in IBM’s cloud infrastructure

A demonstrated attack by cybersecurity researchers in IBM’s cloud infrastructure allowed them access to the internal server used to build database images for customer deployments.

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Researchers found security pitfalls in IBM’s cloud infrastructure

A demonstrated attack by cybersecurity researchers in IBM’s cloud infrastructure allowed them access to the internal server used to build database images for customer deployments.

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Software projects face supply chain security risk due to insecure artifact downloads via GitHub Actions

Cybersecurity researchers found risks in the GitHub Actions platform that could enable attackers to inject malicious code into software projects and initiate a supply chain attack.

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Is SASE right for your organization? 5 key questions to ask

Secure access service edge (SASE) is a network architecture that provides a security-focused alternative to SD-WAN. First outlined by Gartner in 2019, SASE converges SD-WAN services with a range of Security-as-a-Service offerings. Gartner now forecasts that by 2024 at least 40% of enterprises will consider adopting SASE.The leading SASE vendors are a mix of networking incumbents and well-funded startups. These include Cato Networks, Cisco, Fortinet, HPE, Palo Alto Networks, Perimeter 81, Versa, VMware, and Zscaler.To read this article in full, please click here

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Are DPUs Any Good?

After VMware launched DPU-based acceleration for VMware NSX, marketing-focused websites frantically started discussing the benefits of DPUs. Although I’ve been writing about SmartNICs and DPUs for years, it’s time for another closer look at the emperor’s clothes.

What Is a DPU

DPU (Data Processing Unit) is a fancier name for a network adapter formerly known as SmartNIC – a server repackaged into an interface card form factor. We had them for decades (anyone remembers iSCSI offload adapters?)

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Are DPUs Any Good?

After VMware launched DPU-based acceleration for VMware NSX, marketing-focused websites frantically started discussing the benefits of DPUs. Although I’ve been writing about SmartNICs and DPUs for years, it’s time for another closer look at the emperor’s clothes.

What Is a DPU

DPU (Data Processing Unit) is a fancier name for a network adapter formerly known as SmartNIC – a server repackaged into an interface card form factor. We had them for decades (anyone remembers iSCSI offload adapters?)

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Linux bash tips: Many ways to loop using bash

The bash shell provides a superb functionality when it comes to writing scripts. This includes many ways to loop through a pile of data so that you can get a lot done with one running of a script. Whether you’re looping through a large group of numeric values, days of the week, usernames, words, files, or something else entirely, bash has an option that can make it easy for you.for, while, and until loops The first thing you need to know about looping in bash is that there are several basic commands to use. The while loop will loop as long as some particular condition holds true. The until loop will loop until some condition becomes true, and the for loop will run through a series of values regardless of their origin.To read this article in full, please click here

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Linux bash tips: Many ways to loop using bash

The bash shell provides a superb functionality when it comes to writing scripts. This includes many ways to loop through a pile of data so that you can get a lot done with one running of a script. Whether you’re looping through a large group of numeric values, days of the week, usernames, words, files, or something else entirely, bash has an option that can make it easy for you.for, while, and until loops The first thing you need to know about looping in bash is that there are several basic commands to use. The while loop will loop as long as some particular condition holds true. The until loop will loop until some condition becomes true, and the for loop will run through a series of values regardless of their origin.To read this article in full, please click here

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Eufy Camera Shenanigans

https://codingpackets.com/blog/eufy-camera-shenanigans

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pfSense Qemu Guest Agent

https://codingpackets.com/blog/pfsense-qemu-guest-agent

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Eufy Camera Shenanigans

https://codingpackets.com/blog/eufy-camera-shenanigans

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AWS launches new chips, replacement for TCP

Amazon Web Services has introduced a new CPU customized for high-performance computing (HPC) and the next generation of its Nitro smart networking chip, plus instances that take full advantage of the hardware.The Arm-based CPU is called the Graviton3E and has been optimized for floating point math, key in HPC, the company announced at AWS re:Invent conference. Amazon said Hpc7g instances powered by the new Graviton3E chips offer up to double the floating point and vector performance compared to the current generation of instances.The vast datasets that accompany HPC need to be moved around, so Amazon also introduced the fifth generation of its Nitro smartNICs, offering up to twice the network bandwidth and up to 50% higher packet processing-per-second performance compared to current generation networking-optimized instances.To read this article in full, please click here

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Commands for finding out if compressed Linux files are the same

Compressed Linux files are helpful because they save disk space, but what should you do when you have a series of compressed files and want to determine if any are duplicates? The zdiff and zcmp commands can help.To begin, if a directory contains two files like those below, it’s easy to tell just from the listing that they are not identical. After all, the file sizes are a little different. The files look like this:$ ls -l total 200 -rw-r--r--. 1 shs shs 102178 Nov 22 2021 2021.gz -rw-r--r--. 1 shs shs 102181 Nov 22 11:19 2022.gz If you compare the files with the diff command, it will confirm that the files differ:To read this article in full, please click here

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Commands for finding out if compressed Linux files are the same

Compressed Linux files are helpful because they save disk space, but what should you do when you have a series of compressed files and want to determine if any are duplicates? The zdiff and zcmp commands can help.To begin, if a directory contains two files like those below, it’s easy to tell just from the listing that they are not identical. After all, the file sizes are a little different. The files look like this:$ ls -l total 200 -rw-r--r--. 1 shs shs 102178 Nov 22 2021 2021.gz -rw-r--r--. 1 shs shs 102181 Nov 22 11:19 2022.gz If you compare the files with the diff command, it will confirm that the files differ:To read this article in full, please click here

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In IT, Good Fences Don’t Make Good Neighbors

To remain agile – not to mention secure, audit-ready, and compliant – IT needs to re-tool how they manage today's new technology environment. This is where Enterprise Technology Management (ETM) comes in.