Server
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CentOS 7 Yum Issues and the Vault Repository Solution
CentOS 7 Yum
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Recovering from DUO Security MFA Lockout on Windows Server: Safe Mode Uninstallation Guide
Have you installed an MFA solution like DUO Security on your Windows Server, only to find that you can no longer log in via RDP? Even in Safe Mode, you might struggle to uninstall the program because the usual removal options don’t work. Problem: RDP Lockout MFA solutions such as DUO Security can completely block RDP access if: They are…
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Mini Ansible Cheatsheet
#Ping all hosts in inventory ansible all -i inventory.ini -m ping # Run module for specific group ansible web -i inventory.ini -m shell -a "uptime" # Run a Playbook ansible-playbook -i inventory.ini playbook.yml Common Modules: ModülİşlevpingPing test fileFile/directory create, delete, permissioncopyCopy file from local to remotetemplateJinja2 template path to destinationyum/aptPackage install/delete (RHEL/Debian)serviceService start/stop/enableuserUser create/deletelineinfileAdd line in filegitRepo Clone/Pull command /…
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What is a Reverse Proxy and Load Balancer?
In the early 2000s, as the internet became widespread, accessing websites meant directly communicating with the web servers hosting those sites. Web browsers would send requests to a web server, and the server would respond with web content. However, with the increasing complexity of modern application architectures and the shift toward microservices, managing the heavy traffic between clients and servers…
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How to Set Up a LAMP Stack Server
In this guide, we will walk through the step-by-step installation of the LAMP Stack, a powerful combination of open-source technologies that powers countless websites and web applications. The name LAMP comes from the four core components it uses: Linux – The operating system foundation Apache – The web server software MySQL/MariaDB – The database management system PHP – The server-side…
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How to Reset the Root Password on Ubuntu: Step-by-Step Guide
In some cases, you may forget the root password on your Ubuntu system or need to regain access if it has been changed without your consent. This guide will show you how to reset the root password safely using GRUB and kernel parameters. Step 1: Reboot Your Ubuntu System reboot To reset the root password, first restart your Ubuntu machine.…
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Recovering Root Password in Red Hat Enterprise Linux (RHEL)
In some cases, the root password in Red Hat Enterprise Linux (RHEL) may be forgotten, or it might be changed by unauthorized access, preventing you from logging into the system. In such situations, you need to reset the root password. To start the recovery process, reboot your RHEL system. Step 1: Reboot the System and Access the GRUB Menu When…
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Linux Partitioning/Swap Guide
PARTİTİONİNG Let’s consider a scenario where you want to have both Ubuntu and Windows on the same disk. Windows uses NTFS as its filesystem, while Ubuntu typically uses ext4. You cannot use both operating systems on the same disk simultaneously in a fully shared manner because the filesystems are different. A single disk cannot natively host two operating systems with…
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LVM (Logical Volume Manager)
What is LVM? LVM (Logical Volume Manager) is a logical volume manager for Linux systems that allows you to manage disk storage flexibly and dynamically. With LVM, you can combine physical disks into logical volumes and easily resize or reorganize disk space as needed. This provides greater flexibility compared to traditional fixed disk partitioning and simplifies storage management. ———– Key…
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