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Sometimes you may need to setup network bridge adapter in Linux; particularly during the configuration of KVM (Kernel-based Virtual Machine), and, also while setting up Linux containers. This network bridge allows virtual machines to have access to the external network and vice-versa, follow this guide to setup network bridge on CentOS 7 / RHEL 7. […]
High-Availability cluster aka Failover-cluster (active-passive cluster) is one of the most widely used cluster types in the production environment. This type of cluster provides you the continued availability of services even one of the cluster nodes fails. If the server running application has failed for some reason (hardware failure), cluster software (pacemaker) will restart the […]
Linux containers (LXC), is a lightweight operating system-level virtualization method that allows us to run multiple isolated Linux systems (containers) on a single host. LXC does not provide all the features of standard virtualization software such as VMware, VirtualBox, and KVM but rather it provides a virtual environment that has its own CPU, memory, blocks […]
Changing timezone in CentOS 7 / RHEL 7 and Fedora is a straightforward task. The timedatectl command makes it easier for us to change the timezone in CentOS 7 / RHEL 7. For this demo, we will change the system time zone from EST to IST. Change Timezone Now, first, let’s check the date with […]
This tutorial is a bit old and needs an update. An updated post is available here: Top 17 Important Docker Commands. In this post, we will be working with Docker container CLI, to interact with Docker containers. This guide focuses on important commands that we use generally in Docker environment. Before going ahead, take a […]