#!/bin/bash

DB_USER="root"
DB_PASS="password"

SCP_HOST="remote.server"
SCP_USER="username"
SCP_PATH="backups/"

STOR="/home/dbbackup/"
STOR_USER="dbbackup:root"
STOR_PERM="0600"
STOR_DAYS="7"

# -------------

DUMP_SCHEMA="/usr/bin/mysqldump --opt --all --no-data"
DUMP_DATA="/usr/bin/mysqldump --opt --add-locks=FALSE --no-create-info"

umask 0077
NOW=`date +%Y-%m-%d-%H-%M`
TMPDIR=`mktemp -d`
mkdir -p $TMPDIR/$NOW

# generate dumps
db_list=`echo "show databases;" | /usr/bin/mysql -u${DB_USER} -p${DB_PASS} -r --column-name=FALSE`
for db in $db_list; do
    $DUMP_SCHEMA -u${DB_USER} -p${DB_PASS} --databases $db > $TMPDIR/$NOW/$db-schema.sql
    $DUMP_DATA -u${DB_USER} -p${DB_PASS} $db > $TMPDIR/$NOW/$db-data.sql
done

# pack dumps together
tar -czf database-$NOW.tar.gz -C $TMPDIR $NOW

# upload
/usr/bin/scp -q $TMPDIR/database-$NOW.tar.gz ${SCP_USER}@${SCP_HOST}:${SCP_PATH}

# move to storage
chmod $STOR_PERM $TMPDIR/database-$NOW.tar.gz
chown $STOR_USER $TMPDIR/database-$NOW.tar.gz
mv $TMPDIR/database-$NOW.tar.gz $STOR

# delete old files in storage
find $STOR -mtime $STOR_DAYS -exec rm {} \;

rm -rf $TMPDIR