Add helios/external-backups.sh
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helios/external-backup.sh
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helios/external-backup.sh
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#!/bin/bash
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#
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# Script zieht per rsync Backups und rotiert Backup-Verzeichnisse
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#
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# https://www.heinlein-support.de/howto/backups-und-snapshots-von-linux-servern-mit-rsync-und-ssh
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#
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# Zusammengeführt und angepasst durch Tobias Strobel (2021)
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#
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RDIFFEXIT="$(mktemp)"
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GOTIFYURL="https://push.strobeto.de/message?token=Anks7VaBnyf7jCB"
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HCBACKUPURL="https://hc.strobeto.de/ping/375f20ea-aaa7-4b34-b279-bafc3ff55fed"
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HCROTATEURL="https://hc.strobeto.de/ping/f169adf0-a1b3-4823-8fb6-f3a63546bb42"
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SERVER="$(hostname)"
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# ### Konfiguration
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# Sollen wir pruefen, ob noch ein gewisser Prozentsatz
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# an Plattenplatz und Inodes frei ist?
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HDMINFREE=90
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# Welcher Pfad soll gesichert werden?
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SRC_PATH=/
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# Unter welchem Pfad wird gesichert?
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DATA_PATH=/mnt/backupone
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setLED () {
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# Set LED status
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echo heartbeat > "/sys/class/leds/helios64:blue:usb3/trigger"
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echo 1 > "/sys/class/leds/helios64:blue:usb3/brightness"
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}
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clearLED () {
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# Clear LED status
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echo usbport > "/sys/class/leds/helios64:blue:usb3/trigger"
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echo 0 > "/sys/class/leds/helios64:blue:usb3/brightness"
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}
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finishUp () {
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# Clean up tempfiles
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rm "$RDIFFEXIT"
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sync -f $DATA_PATH
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}
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healthchecksStart () {
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# $1 Healthchecks URL
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curl -fsS -m 10 --retry 5 -o /dev/null "$1"/start
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}
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healthchecksFinish () {
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# $1 Healthchecks URL
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# $2 Status Code
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# $3 Logs
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curl -fsS -m 10 --retry 5 --data-raw "$3" "$1"/"$2"
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}
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notify () {
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# $1 Action
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# $2 Last command succeeded
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# $3 Custom Title
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# $4 Custom Message
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# $5 Custom Priority
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NOTIFY_TITLE="[$SERVER] "
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NOTIFY_MESSAGE=""
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NOTIFY_PRIORITY=1
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case "$1" in
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rotate-start)
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NOTIFY_TITLE+="Rotation started"
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NOTIFY_MESSAGE="Rotation on external hdd started"
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;;
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rotate-end)
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if [ "$2" -eq 0 ]; then
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NOTIFY_TITLE+="Rotation finished"
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NOTIFY_MESSAGE="Rotation on external hdd finished"
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NOTIFY_PRIORITY=5
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else
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NOTIFY_TITLE+="Rotation has ERRORS"
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NOTIFY_MESSAGE="Exit code $STATUSCODE. See logs attached to healthchecks for more information."
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NOTIFY_PRIORITY=8
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fi
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;;
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backup-start)
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NOTIFY_TITLE+="Backup started"
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NOTIFY_MESSAGE="Backup to external hdd started"
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;;
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backup-end)
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if [ "$2" -eq 0 ]; then
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NOTIFY_TITLE+="Backup finished"
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NOTIFY_MESSAGE="Backup to external hdd finished"
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NOTIFY_PRIORITY=5
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else
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NOTIFY_TITLE+="Backup has ERRORS"
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NOTIFY_MESSAGE="Exit code $STATUSCODE. See logs attached to healthchecks for more information."
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NOTIFY_PRIORITY=8
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fi
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;;
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*)
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NOTIFY_TITLE+="$3"
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NOTIFY_MESSAGE="$4"
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NOTIFY_PRIORITY="$5"
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;;
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esac
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curl "$GOTIFYURL" -F "title=$NOTIFY_TITLE" -F "message=$NOTIFY_MESSAGE" -F "priority=$NOTIFY_PRIORITY"
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}
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checkFreeSpace () {
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# Pruefe auf freien Plattenplatz
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GETPERCENTAGE='s/.* \([0-9]\{1,3\}\)%.*/\1/'
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KBISFREE=$(df /$DATA_PATH | tail -n1 | sed -e "$GETPERCENTAGE")
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INODEISFREE=$(df -i /$DATA_PATH | tail -n1 | sed -e "$GETPERCENTAGE")
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if [ "$KBISFREE" -ge $HDMINFREE ] || [ "$INODEISFREE" -ge $HDMINFREE ] ; then
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echo "Fatal: Not enough space left for rotating backups!"
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logger "Fatal: Not enough space left for rotating backups!"
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exit
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fi
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}
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basicChecks () {
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if ! [ -d $DATA_PATH ] ; then
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echo "Fatal: Data path does not exist: $DATA_PATH"
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logger "Fatal: Data path does not exist: $DATA_PATH"
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exit
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fi
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checkFreeSpace
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# Ggf. Verzeichnis anlegen
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if ! [ -d $DATA_PATH/"$SERVER"/daily.0 ] ; then
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mkdir -p $DATA_PATH/"$SERVER"/daily.0
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fi
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}
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rotate () {
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echo "Rotating snapshots of $SERVER..."
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healthchecksStart $HCROTATEURL
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notify rotate-start
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# Das hoechste Snapshot abloeschen
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if [ -d $DATA_PATH/"$SERVER"/daily.7 ] ; then
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rm -rf $DATA_PATH/"$SERVER"/daily.7
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fi
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# Alle anderen Snapshots eine Nummer nach oben verschieben
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for OLD in 6 5 4 3 2 1 ; do
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if [ -d $DATA_PATH/"$SERVER"/daily.$OLD ] ; then
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NEW=$($OLD + 1)
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# Datum sichern
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touch $DATA_PATH/.timestamp -r $DATA_PATH/"$SERVER"/daily.$OLD
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mv $DATA_PATH/"$SERVER"/daily.$OLD $DATA_PATH/"$SERVER"/daily."$NEW"
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# Datum zurueckspielen
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touch $DATA_PATH/"$SERVER"/daily."$NEW" -r $DATA_PATH/.timestamp
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fi
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done
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# Snapshot von Level-0 per hardlink-Kopie nach Level-1 kopieren
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if [ -d $DATA_PATH/"$SERVER"/daily.0 ] ; then
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ROTATELOG=$(cp -al $DATA_PATH/"$SERVER"/daily.0 $DATA_PATH/"$SERVER"/daily.1; echo $? > "$RDIFFEXIT")
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fi
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STATUSCODE=$(cat "$RDIFFEXIT")
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echo "Finished rotating backups of $SERVER..."
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healthchecksFinish $HCROTATEURL "$STATUSCODE" "$ROTATELOG"
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notify rotate-end "$STATUSCODE"
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}
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backup () {
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# Los geht`s: rsync zieht ein Vollbackup
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echo "Starting rsync backup from $SERVER..."
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healthchecksStart $HCBACKUPURL
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notify backup-start
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BACKUPLOG=$(rsync -avz --numeric-ids -e ssh --delete --delete-excluded \
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--include={"/mnt/storage/nc_data","/mnt/storage/media","/mnt/storage/backup"} \
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--exclude={"/dev/*","/proc/*","/sys/*","/tmp/*","/run/*","/mnt/*","/media/*","/lost+found","/.snapshots"} \
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$SRC_PATH $DATA_PATH/"$SERVER"/daily.0 \
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; echo $? > "$RDIFFEXIT")
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STATUSCODE=$(cat "$RDIFFEXIT")
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# Rückgabewert prüfen.
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# 0 = fehlerfrei,
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# 24 ist harmlos; tritt auf, wenn während der Laufzeit
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# von rsync noch (/tmp?) Dateien verändert oder gelöscht wurden.
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# Alles andere ist fatal -- siehe man (1) rsync
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if ! [ "$STATUSCODE" = 24 ] || ! [ "$STATUSCODE" = 0 ] ; then
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echo "Fatal: rsync finished $SERVER with errors!"
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fi
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# Verzeichnis anfassen, um Backup-Datum zu speichern
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touch $DATA_PATH/"$SERVER"/daily.0
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echo "Finished rsync backup from $SERVER..."
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healthchecksFinish $HCBACKUPURL "$STATUSCODE" "$BACKUPLOG"
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notify backup-end "$STATUSCODE"
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}
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setLED
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basicChecks
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backup
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rotate
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finishUp
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clearLED
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