ansible/roles/desktop/templates/backup.sh

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#! /bin/bash
#
# desktop.sh
# Backup script for desktops. Meant to be sourced by our main backup script
# Copyright (C) 2020 Vintage Salt <rehashedsalt@cock.li>
#
# Distributed under terms of the MIT license.
#
set -e
export OUTDIR="$BACKUPSDIR/{{ inventory_hostname }}"
retention=7 # 7-day retention period
# Sanity checks
if [ -z "$BACKUPSDIR" ]; then
log "BACKUPSDIR was undefined. Run the main backup script instead of this one."
return 1
fi
if ! [ -d "$OUTDIR" ]; then
if ! mkdir "$OUTDIR"; then
log "Unable to find or create output directory: $OUTDIR"
return 2
fi
fi
# Purge oldest backup if we need to
currentbackupcount="$(ls -1 "$OUTDIR" | wc -l)"
if (( currentbackupcount >= retention )); then
lastbackup="$(find "$OUTDIR" -name \*.tar.gz 2>/dev/null | sort | head -n 1)"
if [ -f "$lastbackup" ]; then
log "Removing old backup: $lastbackup"
rm "$lastbackup"
fi
fi
# WE MAKE BACKUP NOW SERGEI
for dir in /home/*; do
username="$(basename -- "$dir")"
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forcefile="$dir/.backup/force"
[ -d "$dir/.backup" ] || continue
for file in "$dir/.backup/"*; do [ -e "$file" ] || continue; done
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tar czhf "$OUTDIR/desktop-$username-{{ inventory_hostname }}-$(date -Iseconds).tar.gz" "$dir/.backup/"*
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if (( "$(date +%d)" == "1" )) || [ -f "$forcefile" ]; then
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log "Detected conditions for monthly dump"
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if command -v aws > /dev/null 2>&1 && aws s3 ls "s3://$s3bucket " > /dev/null 2>&1; then
# Time for huge backups piped straight to S3
tar \
--exclude "$dir/.ansible" \
--exclude "$dir/.backup" \
--exclude "$dir/.cache" \
--exclude "$dir/.steam" \
--exclude "$dir/Downloads" \
--exclude "$dir/Dropbox" \
--exclude "$dir/Nextcloud" \
--exclude "$dir/snap" \
czf - "$dir/"* \
| gzip -c | aws s3 cp - "s3://$s3bucket" \
--recursive \
--only-show-errors \
--store-class STANDARD
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else
log "Could not satisfy requirements for AWS CLI"
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fi
[ -f "$forcefile" ] && rm "$forcefile"
fi
done