alexolinux

firewalld

---

Check/Reload

# Check Firewalld
sudo firewall-cmd --state

alexolinux

GitHub GPG Key Setup Manual

---

This guide shows how to generate a GPG key, configure Git to use it, and add it to GitHub so your commits can be verified.

Prerequisites

• A GitHub account with a verified email address.
• Git installed on your computer.

alexolinux

git-rebase

---

This guide explains how to safely update a feature branch from master in Git, using either merge or rebase, before creating or completing a pull request. Use this tutorial when your branch is out of date with the master branch, or when modifications are frequently made to the master branch during this time period.

Understanding ahead and behind

GitHub often shows messages like:

alexolinux

Python Compilation

---

To have another Python versions for the Linux Users without impacting the operating system, the best approach is to install Python locally in the user's home directory. This method avoids requiring root/sudo access and does not alter the system-wide Python installation.

To install Python (e.g.: 3.9.25) locally for a user without sudo access, including the pip module, follow these steps:

alexolinux

#!/bin/bash

#https://hub.docker.com/r/portainer/agent
AGENT_VERSION="2.33.3-alpine"

# Check if the script is being run as root.
if [ "$(id -u)" -eq 0 ]; then
  echo "This script should not be run as root. Run it as a non-root user."
  exit 1
fi

alexolinux

AWX K8s Installation

---

1. Preparation

mkdir AWX && cd AWX && \
  git clone https://github.com/ansible/awx-operator.git && \
  cd awx-operator/ && \

alexolinux

Create virtual environment in Python

Virtualenv using python

1. Check if venv module is installed

python -m venv --help

alexolinux

#!/bin/bash

# Releases: https://github.com/nwjs-ffmpeg-prebuilt/nwjs-ffmpeg-prebuilt/releases
ARCH="x64"
FFMPEG_VER="0.114.0"
FFMPEG_URL="https://github.com/nwjs-ffmpeg-prebuilt/nwjs-ffmpeg-prebuilt/releases/download/$FFMPEG_VER/$FFMPEG_VER-linux-$ARCH.zip"
#OPERA_LIB="/usr/lib64/opera"
OPERA_LIB="/usr/lib64/opera-stable"
TMP_DIR="/tmp/operalib"

alexolinux

#!/bin/bash

# -- ------------------------------------------------------------------------------------------------
# Author: alexolinux
# This script to install and configure a Kubernetes cluster with control-plane and nodes.
# -- ------------------------------------------------------------------------------------------------
# https://kubernetes.io/docs/setup/production-environment/tools/kubeadm/create-cluster-kubeadm/
# https://kubernetes.io/docs/tasks/administer-cluster/kubeadm/kubeadm-upgrade/
# -- ------------------------------------------------------------------------------------------------

alexolinux

#!/bin/bash

# Detect RHEL version
if [ -f /etc/os-release ]; then
    . /etc/os-release
    RHEL_VERSION=$(echo $VERSION_ID | cut -d '.' -f1)
else
    echo "Unable to determine OS version."
    exit 1
fi