The Kubernetes platform is fundamentally different from earlier compute infrastructures and IaaS. In Kubernetes, there is no mapping of applications to servers or VMs. so the backup solution needs to understand this Kubernetes-native architectural pattern, and be able to deal with continuous change. High-velocity application development and deployment cycles are the norms in Kubernetes environments. […]
DevOps
Kubernetes – CKA Exam – Sample question 3
Here is yet another interesting and useful sample question for the CKA exam. The Certified Kubernetes Administration exam is a performance-based exam, unlike other professional exams. Hence, you need to make your hands dirty by building a new Kubernetes cluster and trying all the sample questions. In UnixArena, I have shared sample questions and detailed […]
Kubernetes – Stateful vs Stateless applications
Kubernetes is very famous to host stateless applications. With the growth in popularity of containers, companies began to provide ways to manage both stateless and stateful containers in Kubernetes. Stateful applications stores information locally or on the remote storage. Stateful apps use the same servers/pods each time they process a request from a user. Stateful […]
Kubernetes – CKA Exam – Sample questions 2
Here are the second set of sample questions for CKA (Certified Kubernetes exams). This set of questions are related to Kubernetes secrets. A secret is an object that contains a small amount of sensitive data such as a password, a token, or a key. This helps to avoid the plain text passwords in the application […]
GKE – Install and Configure Prometheus – Kubernetes
Prometheus is an open-source monitoring framework. It provides out-of-the-box monitoring capabilities for the Kubernetes container orchestration platform. It is the most widely used monitoring tool for the Kubernetes cluster. There are some unique challenges to monitor the Kubernetes cluster. This needs to be addressed by deploy reliable monitoring, alerting and graphing architecture. Prometheus covers a […]
Why Kubernetes Backup is so important ?
Containers are a flexible and efficient way to run IT tasks. Kubernetes is one of the most widely adopted container orchestration platforms. Containers have expanded to run a much wider range of processes, including full-scale applications. Docker Swarn and Apache Mesos are other container orchestration platform exist in the market. In recent times, most enterprise […]
GitOps – Install and Configure Argo CD for Kubernetes
Managing the Kubernetes cluster is very simple if you use the right toolsets. Argo CD is one of the popular tools to manage the Kubernetes clusters in a declarative way. It’s a GitOps continuous delivery tool for Kubernetes. Argo CD helps to manage Application definitions, configurations, and environments in a declarative fashion and version controlled […]
Why it’s still worth it to learn Java?
While there are many programming languages out there, Java beats them all in terms of popularity. There are so many reasons behind this immense popularity of Java, while the major ones are object-orientation, platform independence, rich Java API, robust development tools, rich community support, and excellent documentation. So, even with the competition from new languages, […]
How to Install and Configure Jenkins on Redhat/ CentOS 7?
Installing and configuring Jenkins on Redhat Linux / CentOS is very straight forward. Jenkins is a very famous tool among developers. Jenkins is an open source automation platform written in Java. The creator of Jenkins is Kohsuke Kawaguchi and it has been developed when he was working at Sun Microsystems. Jenkins supports most of the […]
Ansible – How to Store Playbook Result in Variable ?
Ansible playbooks/roles often used to complete the specific task which does not require an output. In some cases, you might need to capture the complex command output as results. The output would help to generate the required reports. In some cases, you might require to store configuration backup of the hosts. In this article, we will walk […]