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observability

    Teams increasingly adopt new technologies as companies transform and modernize applications to leverage container- and microservices development. IT infrastructure monitoring has always been difficult to do well but is even more challenging with the changing software architecture and the new technology needed to support it. Many of your …

Cisco ACI

    The goal of today’s data center architecture is policy-based automation of network management and operations functions that can live in both the virtual and physical worlds. With data center designs, we are moving to designs that distribute redundancy and performance via protocols to many devices across the network. …

SASE

    In a cloud-centric world, users and devices require access to services everywhere. The focal point has changed. Now it is the identity of the user and device as opposed to the traditional model that focused solely on the data center. These environmental changes have created a new landscape …

SD-WAN

    Digital transformation is changing businesses in every industry. Both network performance and agility are key to the success of a digital transformation initiative. However, the WAN ( Wide Area Network ) has not enjoyed much innovation over the last decade compared to other parts of the infrastructure, such …

SD-WAN

SD WAN | SD-WAN Tutorial

    Both SD-WAN and SASE incorporate a level of abstraction into the WAN in the form of virtual WANs. Now imagine these virtual WANs individually holding a single application running over the WAN but instead of being in one location, i.e., on a server, consider them end to end. …

Zero Trust

    The drive for Zero Trust is again gaining momentum. The bad actors are getting increasingly sophisticated, resulting in a pervasive sense of unease in traditional networking and security methods. So why are our network infrastructure and applications open to such severe security risks? This Zero Trust tutorial will …

Ansible Variables

For your automation journey, you want to be as flexible as possible. For this reason, in Ansible we have a process known as decoupling. Here we are separating site-specific code from static code. Anything specific to a server or any type of managed device, such as an IP address, can …

Ansible Architecture

As a best practice, you don’t want your Ansible architecture that consists of playbooks and Inventory to be too specific. But, on the other hand, you need to have a certain level of abstraction and keep out very specific information. Therefore, to develop flexible code, you must separate site-specific information …

OpenShift Networking SDN

OpenShift Networking SDN

When considering OpenShift and how OpenShift networking SDN works, you need to fully understand how application exposure works and the different ways you can expose yourself to the external world for external clients to access your internal application. For most use cases, the applications running in Kubernetes pods’ containers need …

Chaos Engineering Kubernetes

When considering Chaos Engineering kubernetes, we must start from the beginning. It was not too long ago that applications were running in single private data centers, potentially two data centers for high availability. These data centers were on-premises and all components were housed internally. Life was easy and troubleshooting and …

docker container security

The building blocks of containers, such as the Kernel primitives, have been around for a long time, so they are not all new when considering their security. However, the container itself is not a kernel construct; it is an abstraction of using features of the host operating system kernel. For …

zero

For Prometheus monitoring, we want as many metrics as possible. These need to be stored so we can follow trends, understand what has been happening in a historical view, and better predict any issues. So, there are several parts to a Prometheus monitoring solution; we must collect the metrics, known …