how to reset kubernetes cluster
You might have come across some situation to reconfigure or reset your existing Kubernetes cluster. And you may try with the kubeadm reset command but which won’t reset the Kubernetes cluster fully, where you...
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minikube-addons
Minikube is a kind of tool which lets you run the Kubernetes cluster on your local machine. This helps you to develop and test on Kubernetes. Follow this link to how to set up...
kubescape – Kubernetes Security tool
Recently CISA and NSA have released guidance on security measures that need to be followed using Kubernetes. As per NSA and CISA hackers are targeting Kubernetes for 3 things, Data Theft Computational theft Denial...
How to renew kubernetes certificates
During the setup of the Kubernetes cluster, you might have seen a folder called /etc/kubernetes/pki is created. If you go inside that folder you can see many certificates and Keys have been created. These...
upgrade from acme v1 to v2
Recently there was a change from letsencrypt that ACME client v1 is deprecated and updated the users whoever using the v1 to upgrade to v2 version. They have sent emails to the users who...
create users and define RBAC in Kubernetes
When you deploy the Kubernetes cluster for your microservice deployment, there will be some use case that you need to provide some access to other users( it can be developers) to the Kubernetes cluster...
how to remove corrupted disk from LVM?
There are certain cases either physical /logical disk gets failed due to some reasons. Recently in my case, I was using 3 disks to create a logical volume in my Linux server for storing...
The connection to the server localhost:8080 was refused – did you specify the right host or port?
You might have encountered the below error when you are trying to access the Kubernetes cluster from any nodes. This is because you don’t have the kube/.confg file to connect the Kubernetes cluster. You...
How to change Kubernetes master and worker node IP address
In this tutorial, we explain what steps need to be taken during changing the IP address of the Kubernetes master and worker node. This kind of situation comes up when you are reorganizing your...
How to upgrade Kubernetes cluster
In this tutorial, we are upgrading the Kubernetes cluster from 1.17.x to 1.18.20. Below are the steps which need to be taken care during the upgrade Its always recommended to perform a backup of...
Enable elasticsearch slow log
As a DevOps engineer, you might see some users complaining about the elastic search that searching the logs is very slow. And in some scenarios, this situation is cannot be reproducible. So it will...
