Initial commit.

backup.sh

@@ -0,0 +1,57 @@
+#! /bin/sh
+
+set -e
+set -o pipefail
+
+if [ "${POSTGRES_DATABASE}" = "**None**" ]; then
+  echo "You need to set the POSTGRES_DATABASE environment variable."
+  exit 1
+fi
+
+if [ "${POSTGRES_HOST}" = "**None**" ]; then
+  if [ -n "${POSTGRES_PORT_5432_TCP_ADDR}" ]; then
+    POSTGRES_HOST=$POSTGRES_PORT_5432_TCP_ADDR
+    POSTGRES_PORT=$POSTGRES_PORT_5432_TCP_PORT
+  else
+    echo "You need to set the POSTGRES_HOST environment variable."
+    exit 1
+  fi
+fi
+
+if [ "${POSTGRES_USER}" = "**None**" ]; then
+  echo "You need to set the POSTGRES_USER environment variable."
+  exit 1
+fi
+
+if [ "${POSTGRES_PASSWORD}" = "**None**" ]; then
+  echo "You need to set the POSTGRES_PASSWORD environment variable or link to a container named POSTGRES."
+  exit 1
+fi
+
+#Proces vars
+export PGPASSWORD=$POSTGRES_PASSWORD
+POSTGRES_HOST_OPTS="-h $POSTGRES_HOST -p $POSTGRES_PORT -U $POSTGRES_USER $POSTGRES_EXTRA_OPTS"
+KEEP_DAYS=$BACKUP_KEEP_DAYS
+KEEP_WEEKS=`expr $((($BACKUP_KEEP_WEEKS * 7) + 1))`
+KEEP_MONTHS=`expr $((($BACKUP_KEEP_MONTHS * 31) + 1))`
+
+#Initialize filename vers and dirs
+DFILE="$BACKUP_DIR/daily/$POSTGRES_DATABASE-`date +%Y%m%d-%H%M%S`.sql.gz"
+WFILE="$BACKUP_DIR/weekly/$POSTGRES_DATABASE-`date +%G%V`.sql.gz"
+MFILE="$BACKUP_DIR/monthly/$POSTGRES_DATABASE-`date +%Y%m`.sql.gz"
+mkdir -p "$BACKUP_DIR/daily/" "$BACKUP_DIR/weekly/" "$BACKUP_DIR/monthly/"
+
+#Create dump
+echo "Creating dump of ${POSTGRES_DATABASE} database from ${POSTGRES_HOST}..."
+pg_dump -f "$DFILE" $POSTGRES_HOST_OPTS $POSTGRES_DATABASE
+
+#Copy (hardlink) for each entry
+ln -vf "$DFILE" "$WFILE"
+ln -vf "$DFILE" "$MFILE"
+
+#Clean old files
+find "$BACKUP_DIR/daily" -maxdepth 1 -mtime +$KEEP_DAYS -name "$POSTGRES_DATABASE-*.sql*" -exec rm -rf '{}' ';'
+find "$BACKUP_DIR/weekly" -maxdepth 1 -mtime +$KEEP_WEEKS -name "$POSTGRES_DATABASE-*.sql*" -exec rm -rf '{}' ';'
+find "$BACKUP_DIR/monthly" -maxdepth 1 -mtime +$KEEP_MONTHS -name "$POSTGRES_DATABASE-*.sql*" -exec rm -rf '{}' ';'
+
+echo "SQL backup uploaded successfully"