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Lock User Account After n Incorrect Login attempts in Linux
Linux Server hardening is one of the important task for sysadmins when it comes to production servers. It is recommended that one should enable login or ssh attempts policy, means user’s account should...
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How to Install and Configure KVM on Debian 10 (Buster)
KVM stands for Kernel based Virtual Machine, KVM is a free and open source type 2 hypervisor which is installed on top of Linux like distributions. Once the KVM is installed on your system then it...
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How to Boot CentOS 8 / RHEL 8 Server in Single User Mode
For day to day operations tasks, sometimes Linux geeks have to boot Linux server in single user mode for recovering the root password, repairing file system errors, fixing incorrect entry of fstab and...
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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 ?...
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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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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...
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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...
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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 also be used...
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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...
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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...
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How to Install and Configure HAProxy on CentOS 8 / RHEL 8
HAProxy stands for High Availability Proxy, it is a free and open source load balancer tool which allow to balance the incoming traffic (TCP and HTTP based) by distributing across the backend servers...
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Learn Pgrep and Pkill Command with Examples in Linux
Linux is loved by developers and enthusiasts alike. You can do lots of things you usually can’t do on operating systems such as windows and OSX. Linux is the best operating system for programmers,...
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How to Use Variables in Ansible Playbook
If you have done some programming in Python, Java, C, C++ or in any other programming language, then variables are not alien. Just like in programming languages, variables in Ansible are used to store...
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How to Enable Nested Virtualization in VirtualBox on Linux
By default nested virtualization in Oracle VM VirtualBox on linux system is disabled. With the release of VirtualBox 6.1 we can enable nested virtualization on Intel CPUs starting with 5th generation...
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How to Configure NIC Teaming on CentOS 8 / RHEL 8
NIC teaming is the concept of combining or bonding 2 or more network interfaces into one logical interface to provide high throughput and redundancy. This practice is popular especially with critical...
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How to Install LEMP Stack on Arch Linux
In this guide, you will learn how to install LEMP stack on an Arch Linux server. LEMP is a popular stack used by web developers for testing and hosting websites and applications. LEMP is an...
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How to Install PHP 7.4 on CentOS 8 / RHEL 8
PHP (Hypertext Preprocessor) is the most popular server-side scripting language and used in developing static and dynamic web sites. In this article, we will demonstrate on how to install latest...
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How to Use Ansible Vault to Secure Sensitive Data
Ansible is a fantastic automation and orchestration tool popular among many developers owing to its simplicity and ease of use. One of the most important features that comes with Ansible is the Ansible...
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How to Run and Schedule Ansible Playbook Using AWX GUI
Our previous article we had already demonstrated the installation steps of Ansible AWX on CentOS 8 and RHEL 8. Ansible AWX is free and open source version Red Hat Ansible Tower. It provides a Graphical...
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How to Install Kubernetes(k8s) with Minikube on CentOS 8
Kubernetes, also known as k8s or simply as Kube, is an open-source container orchestration platform used for the automation scaling and deployment of containers. Minikube is a cross-platform and...
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