This article describes how to find and replace text in Vim / Vi. Vim is the most popular command-line text editor. It comes preinstalled on macOS and most Linux distributions. Finding and replacing text in Vim is quick and easy. Basic Find and Replace # In Vim, you can find and replace text using the
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How to Set Up High Availability for Resource Manager – Part 6
YARN is the Processing Layer of Hadoop, which consists of the Master (Resource Manager) and Slave (Node Manager) services to process the data. Resource Manager (RM) is the critical component that is responsible for resource allocation and management among all the jobs running in Hadoop Cluster. It is always recommended and best practice to have
How to Create Virtual Machines in KVM Using Virt-Manager
As you get started, ensure that the KVM hypervisor is installed on your system. An acronym for Kernel-based Virtual Machine, KVM is a combination of kernel modules & utilities needed to run virtual machines on a host system. These include QEMU, virt-install, libvirtd daemon, virt-manager and so many more. We have elaborate articles on: How
How to Manage Virtual Machines in KVM Using Virt-Manager
The virt-manager application provides an easy-to-use interface that allows users to perform a wide range of tasks including creating guest machines and assigning critical virtual resources such as CPU, memory, and disk space. Users can also configure networking, pause, and resume the guest machines as well as monitor performance. As you get started, make sure
How to Install Apache CouchDB in Ubuntu 20.04
Implemented in Erlang, Apache CouchDB, simply referred to as CouchDB, is an open-source NoSQL database that focuses on data storage in JSON format. CouchDB is a perfect choice for operation teams and businesses looking for a high-performance NoSQL database solution. Unlike relational databases such as MySQL, CouchDB uses a schema-free data model, simplifying records management
How to Install Apache Kafka in CentOS/RHEL 7
Apache Kafka is a powerful messaging engine, which is widely used in BigData projects and the Data Analytics life cycle. It is an Open-source platform to build real-time data streaming pipelines. It is a distributed publish-subscribe platform with Reliability, Scalability, and Durability. We can have Kafka as a standalone or as a cluster. Kafka stores
Managing KVM Virtual Machines with Cockpit Web Console in Linux
Cockpit is a free and open-source front-end tool that provides administrative access to Linux systems. It allows system administrators to monitor, manage, and troubleshoot Linux servers. It provides an intuitive web interface that easy to navigate and keep track of the salient system features and resources. There’s a whole lot of things you can do
Bash: Write to File
One of the most common tasks when writing Bash scripts or working on the Linux command line is reading and writing files. This article explains how to write text to a file in Bash, using the redirection operators and tee command. Writing to a File using Redirection Operators # In Bash, the redirection of output
How To Migrate Virtualbox VMs Into KVM VMs In Linux
Are you considering making a switch from VirtualBox to KVM hypervisor? One of your greatest concerns would be starting all over again by creating new virtual machines in KVM – an arduous task to say the least. The good news is that instead of creating new KVM guest machines, you can easily migrate the VirtualBox
How to Install PHP 8 on Debian 10
PHP is a most popular server scripting language used for creating dynamic and interactive Web pages. PHP is widely-used programming language in the Web. This tutorial explains how to install PHP 8.0 on Debian 10 system. PHP 8.0 is the latest major release and includes performance improvements, and lots of new features such as named