OpenPGP and GNU Privacy Guard https://www.howtogeek.com/816878/how-to-back-up-and-restore-gpg-keys-on-linux/ One of the advantages of electronic files over paper hard copies is you can encrypt electronic files so that they are only accessible by…
Understanding systemd at startup on Linux
Exploring Linux startup with systemd More on sysadmins Enable Sysadmin blog The Automated Enterprise: a guide to managing IT with automation eBook: Ansible Automation for SysAdmins Tales from the field:…
How to compile a SELinux policy package
Overview SELinux gained a bit of traction lately. As a follow-up on some SELinux-inspired articles in the community, I present you a tutorial on how to build a policy package…
How to Install Kubernetes Cluster on Ubuntu 22.04 with ZFS
Are you looking for an easy guide on how to install Kubernetes Cluster on Ubuntu 22.04 (Jammy Jellyfish)? The step-by-step guide on this page will show you how to install…
Resolving Oracle Cloud “Out of Capacity” issue and getting free VPS with 4 ARM cores / 24GB of memory (using OCI CLI)
Very neat and useful configuration was recently announced at Oracle Cloud Infrastructure (OCI) blog as a part of Always Free tier. Unfortunately, as of July 2021, it’s still very complicated…
Python 3.10 on OL8
Step 1 – Install Required Dependencies The latest version of Python is not included in the Oracle Linux 8 default repo, so you will need to compile it from the…
How to check if AES-NI is enabled for OpenSSL on Linux
Intel Advanced Encryption Standard New Instructions (AES-NI) is a special instruction set for x86 processors, which is designed to accelerate the execution of AES algorithms. AES-based symmetric encryption is widely…
Install Remote Desktop Server on Oracle Linux
Xrdp is an open-source implementation of the Microsoft Remote Desktop Protocol (RDP) that allows you to graphically control a remote system. With RDP, you can log in to the remote…
Chroot into an Ubuntu on zfs system
Mount everything correctly: zpool export -a zpool import -N -R /mnt rpool zpool import -N -R /mnt bpool zfs load-key -a # Add “UUID” at the end, if appropriate; use…
Resize a disk in Linux
The following example shows the volumes on a Nitro-based instance: $ lsblk NAME MAJ:MIN RM SIZE RO TYPE MOUNTPOINT sda 8:0 0 30G 0 disk ├─sda1 8:1 0 9.9G 0…