Kubernetes – Networking

Kubernetes mangages many pods and containers. The management of networking in a cluster is not a simple matter. Kubernetes is doing the job using the CNI (Container Network Interface) plugins. There are many CNI providers, such as Flannel, Calico, Canal, and Weave Net.

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Kubernetes – Install and Test on CentOS8

This is how to install Kubernetes on the Linux machine (CentOS 8) – Master Node + Worker Node

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EKS (Elastic Kubernetes Service) is a managed service that runs Kubernetes on AWS.

  • Provision and scale your cluster automatically using AWS multi-AZs for HA (High Availability) and fault tolerance.
  • Compatible with all K8s plug-ins and applications
  • Self-Healing: detects unhealthy worker nodes and replaces them automatically
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[Kubernetes] Jobs & CronJobs

A Job creates one or more pods and will continue to retry execution of the Pods until a specified number of them successfully terminate. As pods successfully complete, the Job tracks the successful completions. When the specified number of successful completions is reached, the job is complete.

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[Kubernetes] Services

A Service is an abstraction which defines a logical set of Pods and a policy by which to access them (sometimes this pattern is called a micro-service).

Through services, you can expose applications running in a pod.
Pods are created and deleted dynamically so that it is not practical to communicate with pods directly. A service expose a set of pods and provides the load-balancing of the traffic across them.

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