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2257 articles
Hackerrank Solution: Regex Substitution in Python
regex substitution hackerrank solution python, hackerrank regex solution, hackerrank regex solution python, hackerrank regex solution python3, hackerrank …
programmingHackerrank Solution: Map and lambda function in Python
map and lambda function hackerrank solution, Python program to print fibonacci series using lambda function, python - How to write the Fibonacci Sequence, …
devopsWorking with different Ansible operators
Different ansible operators are arithmetic, logical, comparison and test operator which we can use with ansible playbook.
devopsWorking with Ansible conditional statements
Control structures are mainly of the following two types Conditional & Iterative. We will cover when, failed_when, changed_when conditions in playbooks
devopsDeploy Openstack using Kolla Ansible [Step-by-Step]
Step by step instructions to deploy openstack using kolla ansible with screenshots.
devopsHow to use different Ansible variables with examples
There are different types of ansible variables such as built-in, host, group, inventory etc. There is a different procedure to access individual ansible …
devopsAnsible roles directory structure overview | Beginners Guide
Overview on Ansible Roles Directory structure. Beginners guide to understand Ansible roles. Ansible Tutorial on role Structure with main.yml files
devopsAnsible Block and Rescue Advanced Guide: Thank Me Later
We can use ansible block, rescue and always to perform different kinds of error handling where with the rescue block we can perform cleanup action
devopsAnsible Azure Examples | Querying Azure VMs with Ansible
using ansible in azure to query vms. Examples to use ansible with Microsoft azure
programmingSteps to Create Python Web App | Python Flask Example
life cycle of creating a python web app that allows user to create, edit and delete blog posts. We used flask for the back-end, jinja2 engine that comes …
programmingGetting started with CGO using Visual Studio Code
Getting started with cgo language. How to use it with Visual Studio Code. Calling C code with GO or calling GO code with C. Create Hello World cgo code.
system-administrationSolved: Error populating transaction, retrying RHEL/CentOS 7/8
How to fix starting package installation process error populating transaction, anaconda is retrying faced during RHEL/CentOS 7/8 installation in Linux
programmingJava main method Explained [Easy Examples]
Different ways to use Java main method are using void, static, public, string arg[] keyeords in programming language
devopsSetup KVM HA Cluster | Pacemaker GUI | RHEL/CentOS 8
Step-by-Step Tutorial to configure KVM HA Cluster using Pacemaker GUI (WEB UI) and CLI tool in RHEL and CentOS 8 Linux. Configure Virtual Floating IP, …
cheatsheet15 virt-install examples | KVM virtualization commands cheatsheet
virt-install examples to create KVM Virtual Machine in Linux. virt-install cheatsheet with virsh to manage the VM. Use location, PXE, custom disks, network …
system-administrationHow to configure VLAN with bond using kickstart in Linux (CentOS/RHEL 7)
How to configure vlan with bond using kickstart in RHEL/CentOS 7. You can configure using network --vlan or using %post section of kickstart with examples. …
system-administrationKickstart %pre script examples in RHEL CentOS 7 8
Use kickstart %pre script examples to perform tasks before installing the system. Use --interpreter, --log, chroot and nochroot options with %pre script …
linuxSetup IPv4 UEFI PXE Boot Server Ubuntu 20.04 [cloud-init]
Step by Step instructions to install and setup ipv4 UEFI PXE Boot Server for automated installation of Ubuntu 20.04 using cloud-init configuration file.
linuxSetup PXE Boot Server using cloud-init for Ubuntu 20.04
Step by step instructions to install and configure PXE boot server to perform automated installation of Ubuntu 20.04 using cloud-init configuration file
system-administrationKickstart post install script examples in RHEL CentOS 7 8
Use kickstart post install scripts to perform tasks after installation, save logs, use interpreter with and without nochroot in RHEL and CentOS 7/8 Linux …
linuxConfigure IPv6 UEFI PXE Boot with Kickstart [RHEL/CentOS 8]
Step by step instructions to install and configure IPv6 UEFI PXE Boot using kickstart configuration file. Automate the installation over IPv6 network using …
linuxConfigure IPv4 UEFI PXE Boot with Kickstart [RHEL/CentOS 8]
Step by step instructions to install and configure uefi pxe boot with kickstart on RHEL/CentOS 8 Linux. Configure DHCP for UEFI BIOS and automated …
linuxHow to install zlib on Ubuntu?[100% Working]
Different methods to install zlib on Ubuntu with step by step instructions.
programmingGetting started with Forge Laravel
Deploying and managing web applications can be challenging, especially when dealing with server setup, configuration, and maintenance. Forge Laravel is a
networkingDiscovering Network Loops (Layer 2) with Wireshark
Network loops occur due to many reasons. The most common causes are below.
linux5 practical examples to list running processes in Linux
How to list processes by user and name in Linux? How to check if process is running by pid? How to check process status? which command is used to kill a …
linux20+ Top Open Source Application Performance Monitoring Tools (APM)
Top application performance monitoring tools, difference between application performance monitoring and application performance management. What is APM?
linuxSysctl Configuration for High Performance Servers
Unearth the power of sysctl for Linux server optimization. Discover essential kernel parameters, their roles, recommendations for high performance, and how …
storageAdvanced Tips to Improve Disk IO Performance in Linux
Explore comprehensive strategies to improve disk IO performance, from optimizing kernel parameters to leveraging virtualization tools. Unlock the full …
cheatsheetsysctl reload without reboot
Use sysctl -p FILE or sysctl --load FILE or sysctl --system to perform sysctl reload without reboot. Update the initramfs using dracut -f or …