How to Deploy Openshift in VM quickly? Is it possible to configure all the Openshift components in one node? How to experience the real Openshift web UI? Openshift is one of the Kubernetes’s variants and it’s developed and supported by Redhat. Origin is an upstream open source project to experience and test Openshift. This article will […]
How to install pip on RHEL 7 / CentOS 7 ?
Pip is a platform independent package management software. Pip stands for “Pip Installs Packages”. The Python Packaging Authority (PyPA) maintains many of the python relevant projects. The software developed through the PyPA is used to package, share, and install Python software and to interact with indexes of downloadable Python software such as PyPI, the Python […]
Downgrading Ansible Engine on CentOS 7/ RHEL 7
How to downgrade Ansible engine on RHEL 7 / CentOS 7 ?. If you install ansible engine from EPEL repository, it will install the latest ansible engine. I had a hard time with latest ansible engine due to incompatibility with specific tasks. For example, Openshift deployment works fine with Ansible engine 2.7 and fails with […]
Using Date and Timestamp Variable in Ansible Playbook
Timestamp plays a crucial role while automating any job. Timestamp variable would be helpful to capture the current date and time (While gathering facts). In Ansible, we might need to create a file or directory based on the timestamp to make it unique. By default, the ansible engine collects timestamp of the remote systems in […]
Kubernetes /Minikube – How to Deploy Application using Dashboard ?
How to deploy an application on Kubernetes using Dashboard? “Minikube“ is one of the Kubernetes’s variant to experience on a desktop/laptop. This article will walk through how to create deploy a new application on Kubernetes cluster. We could deploy a containerized applications on top of Kubernetes cluster using the various method. In this example, we […]
Kubernetes /Minikube – Enable Dashboard – RHEL 7 / CentOS 7
Are you missing Kubenertes Dashboard on Minikube deployment? This article will walk through how to enable the dashboard on Minikube deployment on localhost and remote client. The dashboard is a web-based user interface for Kubernetes. Web-UI is useful to deploy containerized applications in Kubernetes cluster and manage the cluster resources. It could also help to […]
How to Deploy Kubernetes ? Minikube on RHEL/CentOS
How to create a Kubernetes’s sandbox environment?. How to experience Kubernetes in Laptop/Desktop? MiniQube is developed for desktop/Laptop environment to experience the Kubernetes cluster. “Minikube” runs a single-node Kubernetes cluster inside the Virtual Machine on Laptop/Desktop with help of virtualization technology (Virtual Box, KVM, VMware Fusion). This article will walk through the deployment of Minikube […]
RHEL 7 / Cent OS 7 – “fwupdate-efi” conflicts with “grub2-common”
Have you got the package conflict error while installing the specific package on RHEL 7 /CentOS 7? Frequently, “fwupdate-efi” package conflicts with the “grub2-common” package in RHEL 7 / CentOS 7 environment. This article will provide the step by step procedure to resolve package conflict errors. In general, if you get such error, you must […]
Kubernetes – Overview of Pod and Service
This article will give a high-level view of Kubernetes Pods and Services. Kubernetes runs containers but always inside the pods. You can’t directly deploy container without pods in Kubernetes. The shared context of the pod is a set of Linux namespaces, cgroups, and other facets of isolation. Docker container does the same but the application gets the further sub-isolation since […]
Ansible – Reboot Server Using Playbook and Wait for come back
Ansible is a simple configuration management tool. Open source community keeps trying to make the code much simpler on the newer version. Prior to Ansible engine 2.7, To reboot the target hosts, we need to define a block of code to reboot the server and wait until the hosts to come back. Most of the time. making the configuration changes or installing […]