Patching a Kubernetes deployment involves making updates or changes to an existing deployment. This can be useful for various reasons, such as fixing bugs, applying security updates, introducing new features, or making configuration changes. Kubernetes provides several mechanisms to patch deployments, and the choice depends on the nature of the changes you want to make. […]
DevOps
kubernetes – How to enable tanzu on VMware vSphere?
VMware Tanzu is a portfolio of products and services designed to help organizations build, run, and manage modern applications on Kubernetes. VMware Tanzu provides tools and solutions that enable enterprises to embrace containerization, microservices architecture, and cloud-native application development practices. It is part of VMware’s vision for supporting modern application development and deployment in a […]
k8s Certs – How to validate private key and TLS certificate?
In a Kubernetes cluster, certificates are crucial for securing communication between various components. For example, a Kube API server certificate secures communication between the Kubernetes API server and other components. It is used for authenticating and authorizing API requests. This article will help you to validate your private key and certificate. Sometimes, we would miss […]
How do we fix the vCLS VM issue in VMware vSphere?
Are you facing a challenge in cleaning up vCLS VMs in vSphere 7.x? vCLS is part of the vSphere Cluster Services (vCLS) framework introduced in VMware vSphere 7.0. This framework is designed to provide a set of common infrastructure services that can be used by various vSphere features. The primary purpose of vCLS is to […]
Download BDRSuite v7.0.0 for Free – Protect Hybrid Cloud
BDRSuite v7.0.0 has released a lot of enhanced features. Backup and disaster recovery are critical aspects of data management and system resilience. Organizations use backup and disaster recovery solutions to protect their data, applications, and systems from potential data loss or system failures. These solutions often involve a combination of data backup, replication, and recovery […]
How to create banner messages in Linux quickly?
The banner message refers to the text that is displayed when a user logs into the system. This message is typically displayed before the login prompt and can be used to convey important information or notices to users. MOTD (Message of the Day): The MOTD is a dynamic message that is displayed to users after […]
How to renew Kubernetes expired certificates?
How do you renew the kubernetes expired certificate? Kubernetes uses various certificates for secure communication within the cluster. These certificates are essential for securing communication between various components, such as API servers, kubelets, and etcd. Environment: root@kmaster1:~# kubectl version –shortClient Version: v1.22.0Server Version: v1.22.15root@kmaster1:~# Here are some of the important certificates used in Kubernetes: How […]
How do you create a first helm chart? Kubernetes Package Manager
Helm is a package manager for Kubernetes that allows you to define, install, and upgrade even the most complex Kubernetes applications. Helm is one of the most vital tools in DevOps. Kustomize is a built-in tool for Kubernetes that allows you to customize raw, template-free YAML files for multiple purposes, including managing multiple versions of […]
kubectl – Let’s colourize the output
kubectl is a command-line tool for interacting with Kubernetes clusters. It is the primary interface for managing and controlling Kubernetes clusters, including deploying applications, inspecting cluster resources, scaling workloads, debugging, and performing various administrative tasks. kubecolor is an alternative command-line tool to interact with kubernetes clusters and provide the colorized output, unlike the kubectl command. […]
How to secure Kubernetes cluster ? Why etcd backup is important ?
Securing etcd in a Kubernetes cluster is crucial as etcd is a distributed key-value store that holds the cluster’s configuration data, including sensitive information. It acts as a reliable and highly available database that stores information about the cluster’s configuration, its current state, and metadata. What “etcd” does in kubernetes ? 1. Configuration Data Store: […]