DB Import & Export

Commands

MariaDB
Export database	mariadb-dump -p my_wiki mariadb-dump -p --no-data my_wiki mariadb-dump -p my_wiki --compatible=postgresql
Restore database	echo 'create database my_wiki;' | mariadb -p mariadb -p < data-to-import.sql

Postgres
Export database
Restore database	psql -U postgres

MariaDB

Script to sync db

DATESN=`date +'%m%d'`
DBNAME=mydb
DBFILE=~/Downloads/${DBNAME}-${DATESN}.sql
SSHTUN=13306
SSHCTRL=tun.ctrl
SSHCONF=myconf
RPASS=********
LPASS=********

if [ -e $SSHCTRL ]; then
  echo "* Close existed tunnel."
  ssh -S $SSHCTRL -O exit $SSHCONF 2> /dev/null
fi

echo "* Load data from remote and save as $DBFILE"
ssh -M -S $SSHCTRL -NCfL $SSHTUN:127.0.0.1:3306 $SSHCONF
mysqldump -h 127.0.0.1 -P $SSHTUN -u root -p$RPASS $DBNAME > $DBFILE
ssh -S $SSHCTRL -O exit $SSHCONF 2> /dev/null

echo '* Import data into local'
echo "DROP DATABASE IF EXISTS $DBNAME" | mysql -u root -p$LPASS test
echo "CREATE DATABASE IF NOT EXISTS $DBNAME" | mysql -u root -p$LPASS test
echo "source $DBFILE" | mysql -u root -p$LPASS $DBNAME

echo 'Done.'