backup_script_lab.txt

Étape 1 : Créer un script shell de backup mysql_backup:

#!/bin/sh

#----------------------------------------------------
# a simple mysql database backup script for traininees.
# version 1, updated November 27, 2019.
#----------------------------------------------------
# This work is licensed under a Creative Commons
# Attribution-ShareAlike 3.0 Unported License;
# see http://creativecommons.org/licenses/by-sa/3.0/
# for more information.
#----------------------------------------------------

# (1) set up all the mysqldump variables
FILE=minime.sql.`date +"%Y%m%d"`
DBSERVER=127.0.0.1
DATABASE=dbname
USER=username
PASS=password

# (2) in case you run this more than once a day, remove the previous version of the file
unalias rm     2> /dev/null
rm ${FILE}     2> /dev/null
rm ${FILE}.gz  2> /dev/null

# (3) do the mysql database backup (dump)

# use this command for a database server on a separate host:
#mysqldump --opt --protocol=TCP --user=${USER} --password=${PASS} --host=${DBSERVER} ${DATABASE} > ${FILE}

# use this command for a database server on localhost. add other options if need be.
mysqldump --opt --user=${USER} --password=${PASS} ${DATABASE} > ${FILE}

# (4) gzip the mysql database dump file
gzip $FILE

# (5) show the user the result
echo "${FILE}.gz was created:"
ls -l ${FILE}.gz

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Étape 2: créer un cron pour lancer backup toutes les 10 minutes:

>crontab -e
add this line:
*/10 * * * * /mysql_backup.sh