Add matrix backup script

backups/matrix.sh

@@ -0,0 +1,21 @@
+# Immediatly exit on command failure (e)
+# and quit on unset variables (u)
+set -ue
+
+export BACKUP_REPO=ssh://cttuebak/media/borg/cttue/matrix
+export BACKUP_NAME_DB="db_$(date -u +'%Y-%m-%dT%H:%M%Z')"
+export BACKUP_NAME_DATA="synapse-storage_$(date -u +'%Y-%m-%dT%H:%M%Z')"
+export BORG_PASSPHRASE=$(cat "$(dirname $0)/borg_passphrase.txt")
+
+# Dump the database into borg create
+echo "Starting Backup of Matrix / Synapse Database..."
+docker exec matrix-postgres pg_dump synapse -U synapse |
+    /usr/bin/borg create --compression zstd --stats ${BACKUP_REPO}::${BACKUP_NAME_DB} -
+
+echo "Starting Backup of Matrix / Synapse Storage..."
+/usr/bin/borg create --compression zstd --stats ${BACKUP_REPO}::${BACKUP_NAME_DATA} /matrix/synapse/storage
+
+echo "Backup done. Pruning backup-repo..."
+/usr/bin/borg prune -v --list --keep-daily=7 --keep-weekly=7 --keep-monthly=10 --keep-yearly=5 ${BACKUP_REPO}
+
+echo "Done"