To start the new year 2022 tasks, Today I upgraded my Jenkins cluster. But It didn’t go well. 😧 After the Jenkins and Plugin upgrade, I was getting the following error on my pipeline executions. To give more context, We are using Kubernetes Jenkins plugins to dynamically create Jenkins agents…

It's critical to measure and monitor, of course then take mitigating actions on how our applications behave in case of CPU and memory spike. So as part of application chaos/reliability testing, We need to generate CPU, memory spikes on our systems. There are so many tools out there in the…

Context: We are running several applications like Jenkins, Grafana, InfluxDB,..etc on the Amazon EKS Kubernetes cluster. Also, those applications use Amazon EFS as persistent storage. For example, Jenkins builds data get stores on an EFS file system. EFS provisioner service running on to keep the connection between EFS and Kubernetes…

I was trying to install an application on the Ubuntu18.04 machine and was trying to get GPG Key installed as a pre-requisite. Btw GPG is the Gnu Privacy Guard and it is an implementation of OpenPGP (Open Pretty Good Privacy). It is an encryption technique that is used in a…

InfluxDB is an open-source time series database developed by InfluxData. InfluxDB is purpose-built to collect, store, process and visualize metrics and events, specially used lot on the operations monitoring, application metrics, Internet of Things sensor data, and real-time analytics fields. As of writing InfluDb v2.0.6 is the latest version and…

Recently I wanted to do a Jenkins deployment using the Jenkins community Helm chart. Also I wanted to use a proper storage mount for my Jenkins storage so that I can make sure my build data is safe. In Amazon, We can use either EBS or EFS storage for this…

Recently, I created a Kubernetes 1.18 cluster using Amazon EKS service, following the steps listed in my article https://gvasanka.medium.com/how-to-create-a-kubernetes-cluster-using-amazon-eks-da0911ea62e2 Though the Control plane and worker nodes successfully created, I noticed worker nodes haven't joined with the cluster. kubectl get nodes and kubectl get pods commands were giving empty results.

Kubernetes, also known as K8s, is an open-source system for automating deployment, scaling, and management of containerized applications. Kubernetes can be deployed on several approaches, also there are a lot of providers who provide Kubernetes as a service. Public cloud vendors like Amazon, Google, Azure have their own approaches to…

JMeter API can be used to write JMeter scripts in a programmatic manner. Specially when some test cases written on Java need to be executed as a load script, JMeter API can be utilized. Here, though my target is not to explain how to use JMeter API, adding the following…