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 […]
RHEL7
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 […]
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 […]
Packer Automation – Build Redhat/CentOS VM on VMware vSphere
In this article, we will be walking through the building of Redhat Enterprise Linux 7/CentOS 7 VM using ISO on VMware vSphere environment. Packer is very useful to build your base images on the cloud and on-premise. Packer is an opensource tool and developed by HashiCorp. HashiCorp owns very famous tools like Vagrant, Consul, and […]
Docker Basic Operations – Images and Containers
This article will help you to understand the basic operations of dockers images and containers. Images and containers are two basic components of Docker’s architecture. A container is launched using an image. An image is a fully packed stack which has everything that needed by an application i.e runtime libraries, environment variable, and configuration files. […]
How to Install docker on Redhat Linux (RHEL)- CentOS ?
How to install docker on Redhat Linux (RHEL) and CentOS? How to setup the docker environment to start the first container to start exploring the container world? In this article, we are going to demonstrate the docker community edition deployment on RHEL/CentOS. We will also launch the Docker containers to test the deployment. Docker […]
RHEL7/CentOS 7 – Recover/Reinstall GRUB2 with UEFI
This article will provide the step by step procedure to recover the GRUB RHEL7 / CentOS7 which uses UEFI. In last article, we have demonstrated the BIOS-based system’s GRUB recovery. The newer system ships with UEFI firmware and here is the way to identify BIOS vs UEFI on Linux servers. To recover GRUB2 on RHEL7 /CentOS 7 with […]
How to Recover GRUB on RHEL 7 / CentOS 7 ?
This article will provide the step by step procedure to recover the GRUB on REHL 7 / CentOS 7. GRUB corruption / lost is one of the most common issues on Linux servers/workstations. The possible reasons for grub corruption could be due to bad disk/bug on the firmware or powered off the system abruptly. Systems ships […]
How to find Linux is under BIOS or UEFI mode ?
How would you find your Linux server booted in BIOS mode or UEFI mode? What’s the main difference between BIOS and UEFI? Servers which had shipped prior to the 2011 year have only BIOS firmware installed by default. BIOS is legacy firmware used only on X86 hardware and its 16-bit code. BIOS will take more time for […]
How to Install Python 3 on Redhat Enterprise Linux 7.x ?
Python is available on most of the operating systems in the world. By default Redhat provides 2.7x version on Redhat Enterprise Linux 7.x. But the new development is mostly happening on Python 3.x version since 2.x is legacy. If you need python 3.x, then you need to install it using the Redhat software repository (if […]