freeCodeCamp provide a 3 hour introductory course to Kubernetes. Further reading The Kubernetes Handbook – Learn Kubernetes for Beginners Notes Pod is the smallest unit in the Kubernetes world Link One container per pod is the most common use case Link A Kubernetes cluster consists of nodes (a node is simply a server, whether virtual or bare metal) Link ...
Kubernetes Secrets provide a secure way to manage sensitive information, such as passwords, tokens, or keys, by storing and then accessing them separately from application code. This reduces the risk that the secret is exposed when working with pods or containers. Best Practice Good practices for Kubernetes Secrets (Official Documentation) Best practices for Kubernetes Secrets management (Snyk) How to Handle Secrets in Kubernetes (GitGuardian) Further Reading Kubernetes Secrets (Official Documentation) ...
Red Hat OpenShift is a Kubernetes-based platform for building, deploying, and managing containerised applications at scale. OpenShift can be hosted on-premises, in public or private clouds, or as a fully managed service. Hosting vendors include AWS, Microsoft Azure, Google Cloud, IBM Cloud, and as well as Red Hat OpenShift Dedicated. Learning Paths Red Hat Developer - OpenShift Learning Path. A guided learning path including use of the Red Hat developer sandbox. (Sign up required) Further reading Red Hat OpenShift (redhat.com) OpenShift (wikipedia.com) OpenShift Documentation (docs.redhat.com) [Openshift (developers.redhat.com)](https://developers.redhat.com/products/openshift/ Red Hat OpenShift Dedicatedoverview) Red Hat OpenShift security guide (PDF) Related pages Kubernetes
Containers are portable, self-contained software packages that include an application and all its dependencies, such as libraries and configuration files, allowing consistent execution across different environments; containers are effectively code that defines the environment in which the application runs. Portable: Containers bundle everything an application needs to run, allowing them to be moved between environments — such as laptops, servers, or the cloud. – Self-contained: Each container includes its own file system, processes, and network interfaces, isolating it from the host system and other containers. Consistent execution: By including all dependencies within the container, applications run reliably and consistently, regardless of the underlying infrastructure. Effectively code that defines the environment: A container image serves as a blueprint, specifying the operating system libraries, environment variables and settings, effectively acting as “code” that defines the runtime environment. Further reading The History of Containers (Red Hat Blog) Securing Containers: Keeping pace with change (ISF) Related Kubernetes
What is Kubernetes? Kubernetes, often abbreviated as K8s, is an open-source platform designed to automate the deployment, scaling, and management of containerised applications. It orchestrates clusters of machines, ensuring that application components run reliably and efficiently across diverse environments. At its core, Kubernetes abstracts the underlying infrastructure, allowing developers and operators to define the desired state of their applications. The system then works to maintain this state, handling tasks like load balancing, scaling, and self-healing without manual intervention. ...