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Kubernetes

Kubernetes PersistentVolume and PersistentVolumeClaim using NFS volume types

ByRajesh Kumar December 1, 2019November 15, 2021

Save the definition to a file, for example nfs-pv.yaml, and create the PV:

$ kubectl create -f nfs-pv.yaml
persistentvolume “pv0001” created

$ get pv

$ kubectl create -f nfs-claim.yaml

Pods using PVC

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Rajesh Kumar

I’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.

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Kubernetes

How to Autoscale pods based on CPU/Memory in Kubernetes?
ByRajesh Kumar October 30, 2018November 17, 2021

CPU Based Scaling With Horizontal Pod Autoscaling, Kubernetes automatically scales the number of pods in a replication controller, deployment or replica set based on observed CPU utilisation. [code]$ kubectl get deployment $ kubectl autoscale deployment <deployment-name> –min=2 –max=5 –cpu-percent=80 $ kubectl get hpa[/code] So, now we have a hpa running for our deployment “tomcat02”. It…

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Kubernetes

What is CRI Plugins in Kubernetes?
ByRajesh Kumar September 29, 2023January 23, 2025

CRI plugins, or Container Runtime Interface plugins, are a set of tools that allow you to use different container runtimes with Kubernetes. By default, Kubernetes uses the Docker container runtime. However, you can use other container runtimes, such as containerd or CRI-O, by installing a CRI plugin. CRI plugins are written in Go and use…

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Kubernetes

Kubernetes Interview Questions and Answer Part – 8
ByRajesh Kumar January 15, 2020November 13, 2021

What is the primary application transport mechanism for the Kubernetes API Server? Server side RPC calls Javascript over WebSockets TCP multiplexing over HTTP/S JSON Over HTTP/S (Ans) Objects in the Kubernetes API are organized by which following methods? Kind, Group and API Version (Ans) etcd’s concurrency model Object level resourceVersion Key value store Which kubectl…

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Kubernetes

Getting Started with Cloud Foundry for Kubernetes using cf-for-k8s in Linux(Ubuntu)
ByRajesh Kumar August 3, 2021January 23, 2025

Step 1- Install the cf CLI Using a Package Manager Step 2- You will need kubectl to interact with your cluster kubectl install instructions Step 3 – KinD (Kubernetes in Docker) to instantiate your local cluster Step 4 – Install Bosh CLI Bosh CLI the ./hack/generate-values.sh script will use the Bosh CLI to generate certificates,…

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Kubernetes

Working with multiple virtual Kubernetes clusters aka Namespaces
ByRajesh Kumar July 23, 2019November 16, 2021

Kubernetes supports multiple virtual clusters backed by the same physical cluster. These virtual clusters are called namespaces. Namespaces ca be used in multiple environment with many users spread across multiple teams, or projects. Names of resources need to be unique within a namespace, but not across namespaces. Namespaces are a way to divide cluster resources…

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Kubernetes

An Overview of Kubernetes
ByRajesh Kumar September 12, 2020April 13, 2022

Kubernetes is a powerful container management tool that automates the deployment and management of containers. Kubernetes is container-runtime agnostic. Kubernetes will keep those containers running and handle deploying changes (such as updating the image or changing environment variables) with a “rollout.” You can pause, resume, and rollback changes as you like. Kubernetes can automatically expose…

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