add restic scripts

scripts/restic/backup.sh

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+#!/usr/bin/env zsh
+
+# author:	Daniel Sommer <daniel.sommer@velvettear.de>
+# license:	MIT
+
+# check if we're running in a subshell, forbid direct execution
+[[ "$ZSH_EVAL_CONTEXT" == "toplevel" ]] && printf "error: direct execution of this script is forbidden!\n" >&2 && exit 1
+
+# get the "home" directory
+home="$(dirname $(realpath "$0"))"
+
+# check if .env file exists and source it
+env="$home/$(hostname).env"
+[[ ! -r "$env" ]] && printf "error: config file '"$env"' does not exist!\n" >&2 && exit 1
+source "$env"
+		
+# check if backup directories are defined
+[[ -z "$RESTIC_DIRECTORIES" ]] && printf "error: config file '"$env"' does not define any backup directories!\n" >&2 && exit 1
+
+printf ">> starting restic backup to repository '"$RESTIC_REPOSITORY"'...\n"
+
+# execute "pre" action if defined
+[[ -n "$RESTIC_BACKUP_PRE" ]] && eval "$RESTIC_BACKUP_PRE"
+
+for directory in ${RESTIC_DIRECTORIES[@]}; do
+	seconds="$SECONDS"
+	printf "\n> backing up '"$directory"'...\n"
+	sudo --preserve-env -u "$RESTIC_USER" restic backup --verbose --no-scan --retry-lock 3h --no-cache "$directory"
+	printf "> backup of '"$directory"' finished after "$(( $SECONDS - $seconds ))" seconds!\n"
+done
+
+# execute "post" action if defined
+[[ -n "$RESTIC_BACKUP_POST" ]] && eval "$RESTIC_BACKUP_POST"
+
+printf "\n>> restic backup finished after "$SECONDS" seconds!\n"

scripts/restic/prune.sh

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+#!/usr/bin/env zsh
+
+# author:	Daniel Sommer <daniel.sommer@velvettear.de>
+# license:	MIT
+
+# check if we're running in a subshell, forbid direct execution
+[[ "$ZSH_EVAL_CONTEXT" == "toplevel" ]] && printf "error: direct execution of this script is forbidden!\n" >&2 && exit 1
+
+# define title and icon for the notification
+export RESTIC_NTFY_TITLE="prune"
+export RESTIC_NTFY_ICON="red_circle"
+
+# clear cache directory
+rm -rf "/var/cache/restic"
+
+printf ">> pruning repository '"$RESTIC_REPOSITORY"'...\n\n"
+
+# execute "pre" action if defined
+[[ -n "$RESTIC_PRUNE_PRE" ]] && eval "$RESTIC_PRUNE_PRE"
+
+sudo --preserve-env -u "$RESTIC_USER" restic forget --keep-daily 7 --keep-weekly 1 --keep-monthly 1 --prune --retry-lock 3h --no-cache
+
+# execute "post" action if defined
+[[ -n "$RESTIC_PRUNE_POST" ]] && eval "$RESTIC_PRUNE_POST"
+
+printf "\n>> repository pruned after "$SECONDS" seconds!\n"

scripts/restic/restic.env

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+#!/usr/bin/env zsh
+
+# author:	Daniel Sommer <daniel.sommer@velvettear.de>
+# license:	MIT
+
+# define user
+export RESTIC_USER="restic"
+
+# override default repository
+export RESTIC_REPOSITORY="/mnt/restic"
+
+# define pre and post backup actions
+export RESTIC_BACKUP_PRE="printf '\n> mounting remote storage...\n' && mount -t nfs -o vers=4,soft,noatime,nolock,retrans=1,timeo=10 192.168.100.1:/mnt/storage /mnt/n100"
+export RESTIC_BACKUP_POST="printf '\n> unmounting remote storage...\n' && umount /mnt/n100"
+
+# define pre and post prune actions
+export RESTIC_PRUNE_PRE=""
+export RESTIC_PRUNE_POST=""
+
+# define title and icon for the notification
+export RESTIC_NTFY_TITLE="storage"
+export RESTIC_NTFY_ICON="yellow_circle"
+
+# define backup directories
+export RESTIC_DIRECTORIES=(
+	"/mnt/n100/audiobooks"
+	"/mnt/n100/comics"
+	"/mnt/n100/documents"
+	"/mnt/n100/ebooks"
+	"/mnt/n100/images"
+	"/mnt/n100/music"
+	"/mnt/n100/software"
+	"/mnt/n100/syncthing"
+	"/mnt/n100/videos"
+)

scripts/restic/restic.sh

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+#!/usr/bin/env zsh
+
+# author:	Daniel Sommer <daniel.sommer@velvettear.de>
+# license:	MIT
+
+# exit on error
+set -e
+
+# check permissions
+[[ "$EUID" != 0 ]] && printf "error: permission denied!\n" >&2 && exit 1
+
+# check which action to execute
+[[ -n "$1" ]] && action="$1" || action="backup"
+
+# check if script exists
+script="$(dirname $(realpath "$0"))/$action.sh"
+[[ ! -x "$script" ]] && printf "error: script '"$script"' does not exist or is not executable!\n" >&2 && exit 1
+
+# get the "home" directory
+home="$(dirname $(realpath "$0"))"
+
+# setup restic
+export RESTIC_USER="$(whoami)"
+export RESTIC_REPOSITORY="rest:http://192.168.100.101:8000"
+export RESTIC_PASSWORD="\$Velvet90"
+export RESTIC_COMPRESSION="max"
+export RESTIC_CACHE_DIR="/var/cache/restic"
+export RESTIC_LOG="/var/log/restic-$action.log"
+
+# check if .env file exists and source it
+env="$home/$(hostname).env"
+[[ -r "$env" ]] && source "$env"
+
+# set default values for the notification if undefined
+[[ -z "$RESTIC_NTFY_TITLE" ]] && RESTIC_NTFY_TITLE="$(hostname)"
+[[ -z "$RESTIC_NTFY_ICON" ]] && RESTIC_NTFY_ICON="white_circle"
+
+# execute "pre" action if defined
+[[ -n "$RESTIC_ACTION_PRE" ]] && eval "$RESTIC_ACTION_PRE"
+
+# source / execute restic script
+source "$script" > >(tee "$RESTIC_LOG") 2>&1
+
+# execute "post" action if defined
+[[ -n "$RESTIC_ACTION_POST" ]] && eval "$RESTIC_ACTION_POST"
+
+# send a notification
+/etc/velvettear/scripts/notify.sh "restic" "$RESTIC_LOG" --title "$RESTIC_NTFY_TITLE" --icon "$RESTIC_NTFY_ICON" > /dev/null