Shulou(Shulou.com)06/01 Report--

Write MySQL backup script according to requirement, requirement is as follows: Make daily backup to specified database and save backup files for one week, delete files after one week automatically.

1. Create shell scripts

[root@server18 mysql]$ mkdir -p /home/mysql/DB_BAK/day_bak/

[root@server18 mysql]$ vim day_bak.sh

DB_NAME='tdc_ntt_debug'

USER='mysql'

PWD='mysql'

TIME=$(date +%Y%m%d)

DEL_TIME=$(date --date="7 days ago" +%Y%m%d)

DB_BAK_NAME=tdc_debug${TIME}.sql

DB_DEL_NAME=tdc_debug${DEL_TIME}.sql

BACKUP_PATH='/home/mysql/DB_BAK/day_bak/'

echo $BACKUP_PATH$DB_BAK_NAME

if test -f $BACKUP_PATH$DB_DEL_NAME

then

echo "Delete history dump file"

rm -f $BACKUP_PATH$DB_DEL_NAME

fi

mysqldump -u $USER -p$PWD $DB_NAME > $BACKUP_PATH$DB_BAK_NAME

2./etc/crontab

[root@server18 ~]# crontab -e

30 21 * * * root /home/mysql/DB_BAK/day_bak/day_bak.sh

MySQL backups are made every night at 21:30 and the backup files are retained for 7 days.

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