Scripts section added. Readme revorked.

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Max Buz
2025-02-02 23:09:51 +01:00
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# homelab
# Max's Homelab
Welcome to my personal Homelab repository! This repository contains various projects that I use, have used, or plan to use in my Homelab.
At the moment I have a Lenovo P520 running as a server and I am experimenting a lot. Use with caution, I am not responsible for your data. But feel free to explore and use the resources provided to enhance your home lab setup.
- **Docker Projects**: Pre-configured Docker containers for different applications and services. Sample configuration files for this services.
- **Scripting & Automation**: Useful scripts for automation and management tasks, Ansible playbooks.
Contributions and suggestions are always welcome!

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# Important Notice
When downloading and running scripts from the internet, it is crucial to understand what the script does. Running unknown scripts can pose security risks, such as exposing your system to malware or other malicious activities. Always review the code and ensure it comes from a trusted source before executing it.

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#!/bin/bash
# This script cleans up Docker resources that are not being used. Including images, containers, volumes.
### !!! WARNING !!! ###
# This command is destructive and should be used with caution, as it permanently deletes all unused containers, images, networks, and volumes without recovery options.
# This will also delete persistent data volumes!
# Always make sure, that you have a backup of your data before running this script.
# Script: cleanup_docker.sh
# Log file location
LOG_FILE="$(dirname "$0")/docker_cleanup.log"
# Run cleanup command and capture output
OUTPUT=$(docker system prune -af --volumes 2>&1)
# Extract reclaimed space amounts (excluding "Total reclaimed space: 0B" lines)
RECLAIMED_SPACES=$(echo "$OUTPUT" | grep -Po '(?<=Total reclaimed space: )[0-9.]+[A-Z]+' | grep -v '^0B$')
# Calculate total reclaimed space
TOTAL_RECLAIMED=0
for SPACE in $RECLAIMED_SPACES; do
UNIT=${SPACE: -2} # Extract the unit (e.g., MB, GB)
VALUE=${SPACE%${UNIT}} # Extract the numeric value
VALUE=${VALUE//,/} # Remove any commas if present
case $UNIT in
KB) VALUE=$(echo "$VALUE / 1024 / 1024" | bc -l);; # Convert KB to GB
MB) VALUE=$(echo "$VALUE / 1024" | bc -l);; # Convert MB to GB
GB) VALUE=$VALUE;; # Already in GB
*) VALUE=0;; # Unknown unit
esac
TOTAL_RECLAIMED=$(echo "$TOTAL_RECLAIMED + $VALUE" | bc -l)
done
# Get the current timestamp
TIMESTAMP=$(date '+%d.%m.%Y %H:%M:%S')
# Write the log entry only if there's something reclaimed
if (( $(echo "$TOTAL_RECLAIMED > 0" | bc -l) )); then
printf "%s - Cleanup finished. Total reclaimed space: %.3f GB\n" "$TIMESTAMP" "$TOTAL_RECLAIMED" >> "$LOG_FILE"
else
printf "%s - Cleanup finished. No space was reclaimed.\n" "$TIMESTAMP" >> "$LOG_FILE"
fi