What is PowerShellGet and How to Install PowerShellGet 3.0
PowerShellGet is a PowerShell module with commands for discovering, installing, updating and publishing the PowerShell artifacts like Modules, Scripts, and DSC Resources. PowerShellGet require PowerShell 5.0 or…
How to login Linux server using ssh?
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…
What is Observability?
Observability is a term that originates from control theory, but in the context of software engineering and operations, it refers to the ability to understand the internal…
Create Jenkins jobs using build parameters tutorial
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…
Example of sonar-project.properties file
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…
Common & Popular Ports Number used in OS
The most 50 significant ports are listed here: The following are some of the most common service names, transport protocol names, and port numbers used to differentiate…
Best DNS Monitoring Tools
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…
What is DNS records? Most Common DNS records?
DNS Record Description A Maps domain names to IPv4 addresses AAAA Maps domain names to IPv6 addresses CNAME Redirects a domain to a different domain PTR Resolves…
Prometheus Tutorial Demo
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…
Kubernetes 1.23.6 Cluster Setup Master and Worker in Ubuntu 20.04 on Google Cloud
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…
Kubernetes CKS: Understanding Kubernetes PKI certificates & Security Best Practices
Kubernetes requires PKI certificates for authentication over TLS. If you install Kubernetes with kubeadm, the certificates that your cluster requires are automatically generated. You can also generate your…
Kubernetes CKS: Kubernetes Security Best Practices
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…
What is Container Runtime Interface (CRI)?
Container Runtime Interface (CRI) Container runtime interface (CRI) is a plugin interface that lets the kubelet—an agent that runs on every node in a Kubernetes cluster—use more…
Docker Support is Removed from Kubernetes 1.23 version
The Kubernetes 1.24 release. The release will deprecate several (beta) APIs in favor of stable versions of the same APIs. The major change coming in the Kubernetes…
Kubernetes 1.22.9 Cluster Setup Master and Worker in Ubuntu 20.04
Sample Code – https://github.com/certifications-tutorials/cks-course-environment/tree/master/cluster-setup/previous 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,…
Kubernetes Tutorials: What is Network Policy & Example Code
If you want to control traffic flow at the IP address or port level (OSI layer 3 or 4), then you might consider using Kubernetes NetworkPolicies for…
Kubernetes Assignment for Administrator
Write a Summary post on following Questions – Top 10 k8 API Resources which is being by Kubernetes Admin – Top 10 kubectl commands to troubleshoot Kubernetes…
Install & Configure Prometheus in Kubernetes Cluster
Step 1- Create 2 PV for Prometheus server & Alert Manager Step 2 – Install using Helm Step 3 – How to access? Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud…
Service Mesh Dummies Ebooks Tutorial
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…
Kubernetes Clusters Troubleshooting Guide
Source Code – https://github.com/devopsschool-demo-labs-projects/kubernetes-lab-demo/tree/main/Clusters-Troubleshooting Troubleshooting Kubernetes Nodes Troubleshooting Kubernetes Control Plane Troubleshooting Kubernetes Workloads Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I have…
Logging and Monitoring in kubernetes clusters
Source Code – https://github.com/devopsschool-demo-labs-projects/kubernetes-lab-demo/tree/main/logging-monitoring 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,…
Kubernetes Cluster Upgrade Tutorials
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…
Kubernetes Backup and Restore Complete Reference
Kubernetes cluster backup and restore using “etcdctl” tool Kubernetes cluster backup and restore using Velero Rajesh KumarI’m a DevOps/SRE/DevSecOps/Cloud Expert passionate about sharing knowledge and experiences. I…
Kubernetes Tutorials & Lab: Ingress with NodePort
Sample Code – https://github.com/devopsschool-demo-labs-projects/kubernetes-lab-demo/tree/main/Ingress 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,…
Kubernetes Tutorials & Lab: Ingress with Loadbalancer
Sample Code – https://github.com/devopsschool-demo-labs-projects/kubernetes-lab-demo/tree/main/Ingress 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,…
Kubernetes Lab: Services & Service Discovery
Sample Code – https://github.com/devopsschool-demo-labs-projects/kubernetes-lab-demo/tree/main/Services-ServiceDiscovery 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,…
Kubernetes Tutorial – Create AKS Cluster
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…
Kubernetes Tutorial – Create GKE Cluster
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…
Kubernetes Lab – Investigating Networking & DNS
Sample Code – https://github.com/devopsschool-demo-labs-projects/kubernetes-lab-demo/tree/main/networking-dns 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,…
Terraform Project – Assignment – Exercise – Lab#4: Datasource
How to submit Assignment? Please submit assignment @https://www.debug.school/ and POST url share in the comments of this post. Using Datasource, list out following info List of Images…