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Category Archives for "Networking"

Day Two Cloud 175: Deploying Kubernetes And Managing Clusters

On today's Day Two Cloud we continue our Kubernetes conversation with guest Michael Levan. Today's show focuses on Kubernetes deployments and managing clusters once they're up and running. We discuss whether Kubernetes is really more complex than traditional application infrastructure; examine management options such as GitOps, manifests, and Kubectl; share useful tools, and talk about why Kubernetes is all about APIs.

Day Two Cloud 175: Deploying Kubernetes And Managing Clusters

On today's Day Two Cloud we continue our Kubernetes conversation with guest Michael Levan. Today's show focuses on Kubernetes deployments and managing clusters once they're up and running. We discuss whether Kubernetes is really more complex than traditional application infrastructure; examine management options such as GitOps, manifests, and Kubectl; share useful tools, and talk about why Kubernetes is all about APIs.

The post Day Two Cloud 175: Deploying Kubernetes And Managing Clusters appeared first on Packet Pushers.

Why Would You Need an Overlay Network?

I got this question from one of ipSpace.net subscribers:

My VP is not a fan of overlays and is determined to move away from our legacy implementation of OTV, VXLAN, and EVPN1. We own and manage our optical network across all sites; however, it’s hard for me to picture a network design without overlays. He keeps asking why we need overlays when we own the optical network.

There are several reasons (apart from RFC 1925 Rule 6a) why you might want to add another layer of abstraction (that’s what overlay networks are in a nutshell) to your network.

Network Automation with CUE – Working with YANG-based APIs

In the previous post, I mentioned that CUE can help you work with both “industry-standard” semi-structured APIs and fully structured APIs where data is modelled using OpenAPI or JSON schema. However, there was an elephant in the room that I conveniently ignored but without which no conversation about network automation would be complete. With this post, I plan to rectify my previous omission and explain how you can use CUE to work with YANG-based APIs. More specifically, I’ll focus on OpenConfig and gNMI and show how CUE can be used to write YANG-based configuration data, validate it and send it to a remote device.

Automating YANG-based APIs with CUE

Working with YANG-based APIs is not much different from what I’ve described in the two previous blog posts [1] and [2]. We’re still dealing with structured data that gets assembled based on the rules defined in a set of YANG models and sent over the wire using one of the supported protocols (Netconf, Restconf or gNMI). One of the biggest differences, though, is that data generation gets done in one of the general-purpose programming languages (e.g. Python, Go), since doing it in Ansible is not feasible due to the Continue reading

Gartner: What to do to make data centers more sustainable

Just a few weeks ago Gartner analysts said that sustainability and issues around it  would transcend all of the strategic technology trends for 2023.This week at its IT Infrastructure, Operations & Cloud Strategies Conference Gartner described how corporate data centers might make sustainability a practical reality.“IT leaders must avoid wasting value through the premature replacement of IT infrastructure,” said Philip Dawson, vice president and analyst at Gartner, at the conference. “They can do that by using real-time health analytics to maximize the useful life of data-center assets.”To read this article in full, please click here

Gartner: What to do to make data centers more sustainable

Just a few weeks ago Gartner analysts said that sustainability and issues around it  would transcend all of the strategic technology trends for 2023.This week at its IT Infrastructure, Operations & Cloud Strategies Conference Gartner described how corporate data centers might make sustainability a practical reality.“IT leaders must avoid wasting value through the premature replacement of IT infrastructure,” said Philip Dawson, vice president and analyst at Gartner, at the conference. “They can do that by using real-time health analytics to maximize the useful life of data-center assets.”To read this article in full, please click here

Ransomware attack knocks Rackspace’s Exchange servers offline

Cloud services and hosting provider Rackspace Technology acknowledged Tuesday that a recent incident that took most of its Hosted Exchange email server business offline was the product of a ransomware attack. The company shut the service down last Friday.It was not, initially, clear what had caused the outage, but Rackspace quickly moved to shift Exchange customers over to Microsoft 365, as this part of the company’s infrastructure was apparently unaffected.Rackpsace offers migration to Microsoft 365 Rackspace said today that there is “no timeline” for a restoration of Exchange service, but it is offering Exchange users technical assistance and free access to Microsoft 365 as a substitute, though it acknowledged that migration is unlikely to be a simple process for every user. Rackspace said that, while the migration is in progress, customers can forward email sent to their Hosted Exchange inboxes to an external server, as a temporary workaround.To read this article in full, please click here

Ransomware attack knocks Rackspace’s Exchange servers offline

Cloud services and hosting provider Rackspace Technology acknowledged Tuesday that a recent incident that took most of its Hosted Exchange email server business offline was the product of a ransomware attack. The company shut the service down last Friday.It was not, initially, clear what had caused the outage, but Rackspace quickly moved to shift Exchange customers over to Microsoft 365, as this part of the company’s infrastructure was apparently unaffected.Rackpsace offers migration to Microsoft 365 Rackspace said today that there is “no timeline” for a restoration of Exchange service, but it is offering Exchange users technical assistance and free access to Microsoft 365 as a substitute, though it acknowledged that migration is unlikely to be a simple process for every user. Rackspace said that, while the migration is in progress, customers can forward email sent to their Hosted Exchange inboxes to an external server, as a temporary workaround.To read this article in full, please click here

New! Free self-paced workshops for containers and Kubernetes 

There’s no better way to learn something than to get hands-on. Tigera is excited to present its brand new (and completely free!) self-paced workshops for containers and Kubernetes. Each workshop comes with your own provisioned sample application (Hipstershop) and Calico Cloud lab environment for a limited time.

The first self-paced workshop we’ve launched is on compliance for containers and Kubernetes. Let’s take a closer look at why you should enroll in our compliance workshop and what you’ll gain.

Why get hands-on with achieving compliance?

From the Payment Card Industry Data Security Standard (PCI DSS) to the Health Insurance Portability and Accountability Act (HIPAA) to the General Data Protection Regulation (GDPR), most industries must meet certain compliance requirements when it comes to handling personal data. This could mean implementing resource access control, isolating workloads with sensitive data, or enforcing more advanced security controls such as logging all customer confidential data transactions. No matter what sort of controls you need to implement, the compliance auditor will require proof of compliance, such as what security controls are currently in place, whether control changes can be detected, and if compliance can be verified on demand. The ephemeral nature of Kubernetes can make it Continue reading

12 killer (and free) tools for network engineers

The job of a network engineer just keeps getting more complicated. Mission critical applications are competing for bandwidth. The sheer number of devices is exploding, driven by IoT. And the network itself if being extended to the cloud, the edge and to the home office.  And then there’s cybersecurity to worry about. Attacks are on the rise across the board, and attackers are constantly looking for vulnerabilities or backdoors, upping the need for solid and secure networking to act as an early warning system for cybersecurity defenses.Thankfully, there are many great tools available to help network engineers complete their never-ending tasks. And many of them are available for free. Here’s our list of 12 killer network tools that won’t break the bank. To read this article in full, please click here

12 killer (and free) tools for network engineers

The job of a network engineer just keeps getting more complicated. Mission critical applications are competing for bandwidth. The sheer number of devices is exploding, driven by IoT. And the network itself if being extended to the cloud, the edge and to the home office.  And then there’s cybersecurity to worry about. Attacks are on the rise across the board, and attackers are constantly looking for vulnerabilities or backdoors, upping the need for solid and secure networking to act as an early warning system for cybersecurity defenses.Thankfully, there are many great tools available to help network engineers complete their never-ending tasks. And many of them are available for free. Here’s our list of 12 killer network tools that won’t break the bank. To read this article in full, please click here

BrandPost: How AI-driven Networks Can Ramp Up Operational Efficiencies

Automation represents perhaps the clearest embodiment of Benjamin Franklin’s legendary “time is money” aphorism -- and artificial intelligence (AI)-driven networks are one area where it’s relatively easy to see the near-term benefits that give new meaning to Franklin’s simple phrase.Network automation simplifies operations for network teams and reduces configuration errors. So, it stands to reason that greater automation through AI will deliver a more predictable and reliable network that seemingly can speed up time while saving lots of money. We turned to the CIO Experts Network of IT professionals and industry analysts to collect their views on AI-driven networks and how the technology is likely to change the lives of network teams.To read this article in full, please click here