Kubernetes 001. Building Cluster on Ubuntu Linux with Docker and Calico in 2022
Hello my friend,
The last Black Friday (in 2021) I’ve purchased some Kubernetes trainings from Linux Foundation with quite a huge discount. I’ve purchased and then has been doing nothing in their regard for quite a bit until I’ve received a notification in the beginning of the September that I have only 3 months to use the training and pass exam or it will expire. Moreover, I have 2 exams to pass, so… All my blogs for a bit will be dedicated to Kubernetes only, as I don’t have time to look into anything else for the time being. I will be using these blogs as a brain dump for me during preparation for CKA (Certified Kubernetes Administrator) and CKAD (Certified Kubernetes Application Developer). Whether I will manage it in 2,5 months, the time will show. Let’s get started.
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How Is Kubernetes Related to Network Automation?
Kubernetes is one of the most popular platforms to build Continue reading
Google Jupiter Data Center Network Fabric – New Way of Building Data Center Network Underlay
Google’s Datacenter Optical Circuit Switches and Jupiter network fabric Google’s data centers are unlike any other. It seems they have windows like normal houses because as from the last SIGCOMM’22 presentation, they took their SPINE switches and threw them right out of that window. Google worked on the Micro Electro Mechanical Systems (MEMS) for years in order to build an Optical Circuit Switch (OCS) that would enable dynamic reconfiguration of optical connections between switches in the data center. Optical Circuit Switch enables on-the-fly data center fabric aggregation block switch connections reconfiguration without the need for physical rewiring. And most interestingly, the
The post Google Jupiter Data Center Network Fabric – New Way of Building Data Center Network Underlay appeared first on How Does Internet Work.
Heavy Networking 647: Fortinet’s ZTNA Differentiation Starts With The OS (Sponsored)
A full zero trust architecture goes up and down the stack, bringing in policy and enforcement strategies from the application layer, all the way down into the network. On today's Heavy Networking podcast we discuss zero trust network access, or ZTNA, with sponsor Fortinet. ZTNA is but one part of a robust zero trust architecture, but what a crucial component it is. Alex Samonte, Director of Technical Architecture, joins us to get into nerdy specifics about Fortinet’s ZTNA.
The post Heavy Networking 647: Fortinet’s ZTNA Differentiation Starts With The OS (Sponsored) appeared first on Packet Pushers.
Heavy Networking 647: Fortinet’s ZTNA Differentiation Starts With The OS (Sponsored)
A full zero trust architecture goes up and down the stack, bringing in policy and enforcement strategies from the application layer, all the way down into the network. On today's Heavy Networking podcast we discuss zero trust network access, or ZTNA, with sponsor Fortinet. ZTNA is but one part of a robust zero trust architecture, but what a crucial component it is. Alex Samonte, Director of Technical Architecture, joins us to get into nerdy specifics about Fortinet’s ZTNA.FRnOG #36: Akvorado
Here are the slides I presented for FRnOG #36 in September 2022. They are about Akvorado, a tool to collect network flows and visualize them. It was developped by Free. I didn’t get time to publish a blog post yet, but it should happen soon!
The presentation, in French, was recorded. I have added English subtitles.
Redundancy Is Not Resiliency
Most people carry a spare tire in their car. It’s there in case you get a flat and need to change the tire before you can be on your way again. In my old VAR job I drove a lot away from home and to the middle of nowhere so I didn’t want to rely on roadside assistance. Instead I just grabbed the extra tire out of the back if I needed it and went on my way. However, the process wasn’t entirely hitless. Even the pit crew for a racing team needs time to change tires. I could probably get it done in 20 minutes with appropriate cursing but those were 20 minutes that I wasn’t doing anything else beyond fixing a tire.
Spare tires are redundant. You have an extra thing to replace something that isn’t working. IT operations teams are familiar with redundant systems. Maybe you have a cold spare on the shelf for a switch that might go down. You might have a cold or warm data center location for a disaster. You could even have redundant devices in your enterprise to help you get back in to your equipment if something causes it to go Continue reading
6 SASE Components and their Impact on Network Security
SASE combines network and security functions into a single multi-tenant cloud platform that improves performance and strengthens security.The Basics of Network Address Translation (NAT)
The last video in the 2-hour-long Network Addressing part of How Networks Really Work discusses Network Address Translation.
After watching it, you might want to spend some extra quality time (with a bit of soap opera vibe) enjoying the recent Dual ISP deployment operational issues and uncertainties thread on the v6ops mailing list with a “surprising” result: NPTv6 or NAT66 is the least horrible way to do it.
You need Free ipSpace.net Subscription to watch the video, and the Standard ipSpace.net Subscription to register for upcoming live sessions.
The Basics of Network Address Translation (NAT)
The last video in the 2-hour-long Network Addressing part of How Networks Really Work discusses Network Address Translation.
After watching it, you might want to spend some extra quality time (with a bit of soap opera vibe) enjoying the recent Dual ISP deployment operational issues and uncertainties thread on the v6ops mailing list with a “surprising” result: NPTv6 or NAT66 is the least horrible way to do it.
You need Free ipSpace.net Subscription to watch the video, and the Standard ipSpace.net Subscription to register for upcoming live sessions.
Juniper Apstra Freeform Supports New Topologies, Protocols For Data Center Automation–With Caveats
Juniper Apstra has introduced Freeform, a new way to consume Apstra's data center automation platform without being tied to stringent reference architectures. While Freeform expands the network topologies and protocols Apstra can work with, it comes with its own tradeoffs.
The post Juniper Apstra Freeform Supports New Topologies, Protocols For Data Center Automation–With Caveats appeared first on Packet Pushers.
Kubernetes Unpacked 009: Kubernetes Automation And Repeatability
In this episode, host Michael Levan talks with Ned Bellavance about why orchestration is important in today’s world, how the HashiCorp stack (primarily Terraform and Vault) fit into Kubernetes, and more.
The post Kubernetes Unpacked 009: Kubernetes Automation And Repeatability appeared first on Packet Pushers.
Kubernetes Unpacked 009: Kubernetes Automation And Repeatability
In this episode, host Michael Levan talks with Ned Bellavance about why orchestration is important in today’s world, how the HashiCorp stack (primarily Terraform and Vault) fit into Kubernetes, and more.Low latency flow analytics
Real-time analytics on network flow data with Apache Pinot describes LinkedIn's flow ingestion and analytics pipeline for sFlow and IPFIX exports from network devices. The solution uses Apache Kafka message queues to connect LinkedIn's InFlow flow analyzer with the Apache Pinot datastore to support low latency queries. The article describes the scale of the monitoring system, InFlow receives 50k flows per second from over 100 different network devices on the LinkedIn backbone and edge devices and states InFlow requires storage of tens of TBs of data with a retention of 30 days. The article concludes, Following the successful onboarding of flow data to a real-time table on Pinot, freshness of data improved from 15 mins to 1 minute and query latencies were reduced by as much as 95%.
