All posts by WordPress Guru

How to Install and Configure Samba on CentOS 8

Windows and Linux systems are structured differently and often, a peaceful co-existence between the two is often a challenge. Thanks to Samba, the two systems can now share files and folders over the network. So

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How to Extend EBS Boot Disk of EC2 Instance without Reboot

You can easily increase the size of your root volume of an AWS instance (EC2) without incurring any form of downtime or interrupted associated with a reboot. In this tutorial, we will give you a

How to Add and Delete Static Route in Linux using IP Command

Part of the skill set for any Linux user, and particularly a systems administrator, is the ability to perform some network tweaks on a Linux system. This includes adding and deleting routes to enable the

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9 diff Command Examples in Linux

Diff command in linux is used to compare the content of two files line by line and if the difference is found then it will also list differences along with line numbers. Diff command can

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How to Use When Conditionals Statement in Ansible Playbook

Oftentimes, Ansible plays contain various sets of variables. The tasks to be carried out using these variables vary according to the nature of these variables. And this is where Conditional statements come in. Conditional statements

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20 ps Command Examples to Monitor Linux Processes

Monitoring Linux system is one of the most quintessential task that any Linux user or a systems administrator needs to carry out round the clock to ensure the system is running smoothly and avoid bottle-necks.

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How to Sync Time in Linux Server using Chrony

Time plays an important role in Linux servers specially when they are used in banking, stock markets and other financial sectors. If we want all our Linux servers should have the correct time, then we

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How to Integrate Grafana with Prometheus for Monitoring

Grafana is a free and opensource tool for querying, analyzing and visualizing metrics from an array of multiple data sources whether physical or from the cloud. With Grafana, you can create, explore and share beautiful

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How to Install Prometheus on CentOS 8 / RHEL 8

Prometheus is an open source monitoring, querying and alerting tool. Originally built by Soundcloud in 2012, the feature-rich tool has been adopted by several companies to monitor their IT infrastructure and ensure all systems are

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How to Setup DNS Server (Bind) on CentOS 8 / RHEL8

Developed in the 80’s by students at Berkeley University, BIND (Berkeley Internet Name Domain) is an open source DNS server that provides DNS services on Linux distributions. So, what is a DNS server ? A