backup.sh

#!/bin/bash

MY_DIR=`dirname $0`

. $MY_DIR/backups.conf

DAY_OF_WEEK=`date +%A | tr '[:upper:]' '[:lower:]'`
WEEK_OF_YEAR=`date +%V`
BACKUP_DIRECTORY=/home/$BACKUP_USER/backups/daily/$DAY_OF_WEEK
WEEKLY_BACKUP=/home/$BACKUP_USER/backups/weekly
WD=`pwd`

if [ ! -d "$BACKUP_DIRECTORY" ]; then
  mkdir -p $BACKUP_DIRECTORY
fi

if [ ! -d "$WEEKLY_BACKUP" ]; then
  mkdir -p $WEEKLY_BACKUP
fi

# Postgres
for DB in "${PG_DBS[@]}"
do
  sudo -u postgres pg_dump $DB | gzip > $BACKUP_DIRECTORY/$DB.pg.sql.gz
done

if [ -n "$DATA_DIR" ]; then
  cd $DATA_DIR
  tar --exclude='./elasticsearch' -czf $BACKUP_DIRECTORY/data.tgz .
  cd $WD
fi

if [ "$DAY_OF_WEEK" = "sunday" ]; then 
  # On sundays, backup the whole week in weekly backups
  cd $BACKUP_DIRECTORY
  tar -czf $WEEKLY_BACKUP/$WEEK_OF_YEAR.tgz .
  cd $WD
fi