forked from colin/disk-space-report
Update swap.sh
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#!/bin/bash
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echo "Starting disk space report... This may take a few minutes."
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# Function to estimate the size of the apt cache
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estimate_apt_cache_size() {
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echo "Estimating the size of the apt cache:"
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sudo du -sh /var/cache/apt
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echo
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}
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# Function to estimate the size of old installed packages
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estimate_old_packages_size() {
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echo "Estimating the size of old installed packages:"
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sudo du -sh /var/lib/apt/lists /var/lib/apt/lists/partial
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echo
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}
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# Function to estimate the size of journal logs
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estimate_journal_size() {
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echo "Estimating the size of journal logs:"
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sudo journalctl --disk-usage
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echo
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}
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# Function to estimate the size of temporary files
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estimate_tmp_size() {
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echo "Estimating the size of temporary files:"
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sudo du -sh /tmp /var/tmp
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echo
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}
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# Function to estimate the size of unused Docker volumes
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estimate_docker_volumes_size() {
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echo "Estimating the size of unused Docker volumes:"
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docker volume ls -qf dangling=true | xargs -I {} docker volume inspect --format '{{ .Mountpoint }}' {} | xargs -I {} sudo du -sh {} | awk '{ sum += $1 } END { print sum "B" }'
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echo
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}
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# Function to check and suggest logrotate for large Docker logs
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check_docker_logs() {
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echo "Checking Docker logs for large files..."
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large_logs=$(docker ps -q --filter "status=exited" | xargs -I {} docker inspect --format '{{.LogPath}}' {} | xargs -I {} sudo find {} -type f -size +1G)
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if [ -n "$large_logs" ]; then
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echo "The following Docker logs are larger than 1GB:"
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echo "$large_logs"
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echo
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echo "Consider setting up logrotate to manage Docker logs."
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echo "To truncate all Docker logs, run:"
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echo 'sudo find /var/lib/docker/containers/ -type f -name "*.log" -exec truncate -s 0 {} \;'
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echo
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else
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echo "No large Docker logs found."
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echo
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fi
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}
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# Function to list directories consuming more than a specified size
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list_large_directories() {
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local directory=$1
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local size_limit=$2
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echo "Directories in $directory consuming more than ${size_limit}GB:"
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sudo du -ahx $directory 2>/dev/null | awk -v limit=$size_limit '{
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size=$1; unit=substr(size, length(size));
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size_val=substr(size, 1, length(size)-1);
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if ((unit=="G" && size_val+0 > limit) || (unit=="T" && size_val*1024 > limit)) {
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print
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}
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}'
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echo
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}
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# Estimate storage savings
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echo "Estimating potential storage savings..."
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estimate_apt_cache_size
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estimate_old_packages_size
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estimate_journal_size
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estimate_tmp_size
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estimate_docker_volumes_size
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# Check Docker logs
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check_docker_logs
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# List large directories
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echo "Listing directories consuming more than 5GB and 10GB:"
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list_large_directories / 5
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list_large_directories /home 5
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list_large_directories / 10
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list_large_directories /home 10
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echo "Storage savings estimation and large directory listing completed."
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@ -0,0 +1,40 @@
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#!/bin/bash
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# Detect the main disk by finding the partition mounted on root ('/')
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main_disk=$(df / | tail -1 | awk '{print $1}')
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mount_point=$(df / | tail -1 | awk '{print $6}')
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# Get available space on the partition in GB
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available_space=$(df -BG $mount_point | tail -1 | awk '{print $4}' | sed 's/G//')
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# Calculate 5% of the available space, and ensure it's within the limits (max 30GB)
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swap_size=$((available_space * 5 / 100))
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if [ $swap_size -gt 30 ]; then
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swap_size=30
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elif [ $swap_size -lt 1 ]; then
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echo "Not enough disk space to create a swap file."
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exit 1
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fi
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echo "Creating a ${swap_size}GB swap file at /swapfile..."
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# Create the swap file
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sudo fallocate -l ${swap_size}G /swapfile
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sudo chmod 600 /swapfile
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sudo mkswap /swapfile
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sudo swapon /swapfile
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echo "Swap file of ${swap_size}GB created and activated."
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# Ask if the user wants to persist the swap after reboot
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read -p "Do you want to persist the swap file after reboot? (y/n): " persist_swap
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if [[ "$persist_swap" == "y" || "$persist_swap" == "Y" ]]; then
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echo "/swapfile none swap sw 0 0" | sudo tee -a /etc/fstab
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echo "Swap file added to /etc/fstab."
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else
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echo "Swap file will not persist after reboot."
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fi
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# Show swap summary
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sudo swapon --show
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