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Retrieving the Kubeconfig for a Cluster API Workload Cluster

Using Cluster API allows users to create new Kubernetes clusters easily using manifests that define the desired state of the new cluster (also referred to as a workload cluster; see here for more terminology). But how does one go about accessing this new workload cluster once it’s up and running? In this post, I’ll show you how to retrieve the Kubeconfig file for a new workload cluster created by Cluster API.

(By the way, there’s nothing new or revolutionary about the information in this post; I’m simply sharing it to help folks who may be new to Cluster API.)

Once CAPI has created the new workload cluster, it will also create a new Kubeconfig for accessing this cluster. This Kubeconfig will be stored as a Secret (a specific type of Kubernetes object). In order to use this Kubeconfig to access your new workload cluster, you’ll need to retrieve the Secret, decode it, and then use it with kubectl.

First, you can see the secret by running kubectl get secrets in the namespace where your new workload cluster was created. If the name of your workload cluster was “workload-cluster-1”, then the name of the Secret created by Cluster API would Continue reading

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BrandPost: The Silver Peak SD-WAN Edge Platform: It’s Way Better Than Fast Food

In my most recent blog post, I talked about the difficulty SD-WAN vendors have in finding their voice and clearly differentiating their value. My point was that if Wendy’s, Burger King, and McDonald’s could figure out how to differentiate their burgers and fries, we should be able articulate why customers choose our solutions over the 60+ vendors competing for their business. I started out talking about the business reasons why companies select Silver Peak. Now it’s time to talk about our differentiation at a product level.How is our SD-WAN edge platform, Unity EdgeConnect™, unique? I’ll frame the differentiation around what our customers are telling us. You’ll notice a significant emphasis on our ability to improve application performance for any type of application traversing any type of transport. We’re the only company that first tries to fix problems with the underlying network, allowing customers to fully leverage all of their circuits, even in instances of degraded performance. Unlike others, we don’t just re-route packets in the event of transport brownouts and blackouts.To read this article in full, please click here

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Intel Slashes Jobs Despite Record Quarter

The layoffs, which will affect between 128 and 1,100 Intel employees around the world, come after a...

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Daily Roundup: Google Gobbles Cornerstone

Google gobbled up Cornerstone; Blue Planet boosted Ciena's 5G routers; and SentinelOne scored $200M...

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The Three Levels of Heterogeneous Integration

At The Next FPGA Platform event in San Jose, California on January 22, Jose Alvarez, Intel PSG CTO, Jose Alvarez outlined the three levels of heterogeneous integration. …

The Three Levels of Heterogeneous Integration was written by Josh Gibson at The Next Platform.

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AMD Tweaks Rome Epyc Server Chip Lineup

With the ramping of volumes, the maturing of the manufacturing process, and the widening number of use cases in the field, there is always an opportunity for the lineup of every type and generation of compute engine to get some tweaks here and there. …

AMD Tweaks Rome Epyc Server Chip Lineup was written by Timothy Prickett Morgan at The Next Platform.

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Banks and the Digital Revolution: Can this arranged marriage lead to love?

Networks at financial branches like banks require high security, low latency and constant...

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How To Prevent Dry Throat Due To Public Speaking

Whether required to speak to the public occasionally, or more or less a regular basis, most people suffer from nerves, which ends up with their saliva drying up, and many speakers stating that they experience severe dry throat that “feels like a hairball in my throat.” 

Speaking around this hairball feeling can be difficult. In other cases, colds and allergies can result in sore dry throats that makes it difficult to talk, which can affect teachers and other professionals who need to do a lot of public speaking during the course of any day. This makes it essential that people who need to speak in public find something that will help to prevent that dry throat due to public speaking.

What to Do if It Feels Like a Hairball in My Throat

Learn Some Relaxation Techniques

If you are one of those people who gets nervous speaking in public and complains that it  “feels like a hairball in my throat,” then learning some relaxation techniques that you can use just minutes before getting up in public and speaking may help calm your nerves and ease or prevent that dry feeling in your throat.

Make Sure You Are Well Hydrated

Continue reading

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Moore’s Law is not Ending Soon and the Reason May Surprise You

 

 

Jim Keller recently gave a fascinating and far ranging interview on the AI Podcast. You can find it at Moore's Law, Microprocessors, Abstractions, and First Principles.

One of the many topics of discussion was the often predicted death of Moore's Law. In case you've never heard of Jim Keller before, from this intro you can immediately understand why he may have special insight on the topic:

Jim Keller is a legendary microprocessor engineer, having worked at AMD, Apple, Tesla, and now Intel. He's known for his work on the AMD K7, K8, K12 and Zen microarchitectures, Apple A4, A5 processors, and co-author of the specifications for the x86-64 instruction set and HyperTransport interconnect.

Before we can understand why Moore's Law is not ending soon, we need to understand the idea of a diminishing return curve (this is a gloss of the talk, any errors or omissions are mine, but I tried to get the feel of it):

A project first goes up and then shows diminishing returns over time. To get to the next level you need to start a new project. The initial starting point of that new project will be lower than the return of the Continue reading

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Nokia Buys Elenion to Tighten Optical Integration

Elenion designs system-on-chip silicon photonics technology targeted at telecom operators, data...

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SONiC

SONiC is part of the Open Compute Project (OCP), creating "an open source network operating system based on Linux that runs on switches from multiple vendors and ASICs." The latest SONiC.201911 release of the open source SONiC network operating system adds sFlow support.

SONiC: sFlow High Level Design

The diagram shows the elements of the implementation.

1. The open source Host sFlow agent running in the sFlow container monitors the Redis database (in the Database container) for sFlow related configuration changes.
2. The syncd container monitors the configuration database and pushes hardware settings (packet sampling) to the ASIC using the SAI (Switch Abstraction Inteface) driver (see SAI 1.5).
3. The ASIC driver hands sampled packet headers and associated metadata captured by the ASIC to user space via the Linux PSAMPLE netlink channel (see Linux 4.11 kernel extends packet sampling support).
4. The Host sFlow agent receives the PSAMPLE messages and forwards them to configured sFlow collector(s) as standard sFlow packet samples.
5. In addition, the Host sFlow agent streams telemetry (interface counters and host metrics gathered from the Redis database and Linux kernel) to the collector(s) as standard sFlow counter records.

The following CLI commands enable sFlow Continue reading

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Day Two Cloud 036: The Container Contrarian

Are containers a fad? Or maybe just the wrong answer to a problem you're trying to solve. On today's Day Two Cloud podcast, container contrarian Dave Tucker discusses the problems containers solve, the new ones they create, and why you might want to think twice before you immediately adopt containers as your next application platform.

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Day Two Cloud 036: The Container Contrarian

Are containers a fad? Or maybe just the wrong answer to a problem you're trying to solve. On today's Day Two Cloud podcast, container contrarian Dave Tucker discusses the problems containers solve, the new ones they create, and why you might want to think twice before you immediately adopt containers as your next application platform.

The post Day Two Cloud 036: The Container Contrarian appeared first on Packet Pushers.

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Huawei Fails to Reverse Federal Ban

"Contracting with the federal government is a privilege, not a constitutionally guaranteed right,"...

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BrandPost: The Silver Peak SD-WAN Edge Platform – It’s subtle but we enable people to build an SD-WAN, we don’t offer an SD-WAN

In my most recent blog post, I talked about the difficulty SD-WAN vendors have in finding their voice and clearly differentiating their value. My point was that if Wendy’s, Burger King, and McDonald’s could figure out how to differentiate their burgers and fries, we should be able articulate why customers choose our solutions over the 60+ vendors competing for their business. I started out talking about the business reasons why companies select Silver Peak. Now it’s time to talk about our differentiation at a product level.How is our SD-WAN edge platform, Unity EdgeConnect™, unique? I’ll frame the differentiation around what our customers are telling us. You’ll notice a significant emphasis on our ability to improve application performance for any type of application traversing any type of transport. We’re the only company that first tries to fix problems with the underlying network, allowing customers to fully leverage all of their circuits, even in instances of degraded performance. Unlike others, we don’t just re-route packets in the event of transport brownouts and blackouts.To read this article in full, please click here

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Ciena Unveils Blue Planet-Enhanced 5G Router Haul

The optical giant says the routers will help network operators achieve the low-latency,...

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Cohesity Goes ROBO on Data Management

Customers can manage hundreds of ROBO locations through Cohesity Helios similar to how they manage...

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Deep Dive on VLANS Resource Modules for Network Automation

In October of 2019, as part of Red Hat Ansible Engine 2.9, the Ansible Network Automation team introduced the concept of resource modules.  These opinionated network modules make network automation easier and more consistent for those automating various network platforms in production.  The goal for resource modules was to avoid creating overly complex jinja2 templates for rendering network configuration. This blog post goes through the eos_vlans module for the Arista EOS network platform.  I walk through several examples and describe the use cases for each state parameter and how we envision these being used in real world scenarios.

Before starting let’s quickly explain the rationale behind naming of the network resource modules. Notice for resource modules that configure VLANs there is a singular form (eos_vlan, ios_vlan, junos_vlan, etc) and a plural form (eos_vlans, ios_vlans, junos_vlans).  The new resource modules are the plural form that we are covering today. We have deprecated the singular form. This was done so that those using existing network modules would not have their Ansible Playbooks stop working and have sufficient time to migrate to the new network automation modules.

 

VLAN Example

Let's start with an example of the eos_vlans Continue reading

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The Continuum From Edges To Datacenters

Enterprise IT continues to cast its attentions – and sometimes its aspersions – out to the edge, that place outside of traditional datacenters and beyond that cloud where data is increasingly being generated and processed. …

The Continuum From Edges To Datacenters was written by Jeffrey Burt at The Next Platform.

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How 1500 bytes became the MTU of the internet

How 1500 bytes became the MTU of the internet