1) What is Apache Kafka? Apache Kafka is a publish-subscribe open source message broker application. This messaging application was coded in “Scala”. Basically, this project was started by the Apache software. Kafka’s design pattern is mainly based on the transactional logs design. 2) Enlist the several components in Kafka. The most important elements of Kafka…
1) What is RabbitMQ? RabbitMQ is an open-source message-broker software is also known as message queueing technology. It defines queues to which applications communicate for data transfer, or message transmission. Any kind of information could be included in a message. This message is processed by the recipient application. 2) When and why to use RabbitMQ?…
1) What Is Checkpoint? / Does Consul Call Home? Consul makes use of a HashiCorp service called Checkpoint which is used to check for updates and critical security bulletins. Only anonymous information, which cannot be used to identify the user or host, is sent to Checkpoint. An anonymous ID is sent which helps de-duplicate warning…
1) What is Istio and how it works? An Istio service mesh is logically split into a data plane and a control plane. The data plane is composed of a set of intelligent proxies (Envoy ) deployed as sidecars. These proxies mediate and control all network communication between microservices. They also collect and report telemetry…
1) What is Helm? Helm Charts assist you in defining, installing, and upgrading even the most complicated Kubernetes application. … Helm is a CNCF-graduated project that is supported by the Helm community. 2) What are the advantages of Helm? Helm helps in three ways: increases productivity, reduces the complexity of microservice deployments, and allows for…
What is Rancher? Rancher is an open source platform for Kubernetes Management. It makes it really simple to create clusters, manage multiple Kubernetes clusters and gives a nice user interface for monitoring and managing them. It also address the operational and security challenges of managing multiple Kubernetes clusters over any infrastructure, while providing DevOps teams…
Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I have worked at Cotocus. I share tech blog at DevOps School, travel stories at Holiday Landmark, stock market tips at Stocks Mantra, health and fitness guidance at My Medic Plus, product reviews at TrueReviewNow , and SEO strategies at Wizbrand. Do you want…
Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I have worked at Cotocus. I share tech blog at DevOps School, travel stories at Holiday Landmark, stock market tips at Stocks Mantra, health and fitness guidance at My Medic Plus, product reviews at TrueReviewNow , and SEO strategies at Wizbrand. Do you want…
RHEL / Centos Ubuntu How to remove or cleanup kubernetes worker nodes in Centos 7? How to remove or cleanup kubernetes worker nodes in Ubuntu? Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I have worked at Cotocus. I share tech blog at DevOps School, travel stories at Holiday Landmark, stock market…
What is Kubeadm? Kubeadm helps you bootstrap a minimum viable Kubernetes cluster that conforms to best practices. Kubeadm is a tool built to provide kubeadm init and kubeadm join as best-practice “fast paths” for creating Kubernetes clusters. Goal To Install a single master Kubernetes cluster To Install a high availability master Kubernetes cluster To Install…
When an Amazon EKS cluster is created, the IAM entity (user or role) that creates the cluster is added to the Kubernetes RBAC authorization table as the administrator (with system:master permissions. Initially, only that IAM user can make calls to the Kubernetes API server using kubectl. If you use the console to create the cluster,…