cron job for backup the database in linux/php

Question

Am new to linux cron job, i am using mysql DB, my database name finaldb, i want to take this database every one hour,

I have folder called dailbackup, in this i have fol

Answer 1

Create a PHP Script containing the following:

$dbFile = 'final_db'.date('H').'.sql.gz';
$dbHost = 'localhost'; // Database Host
$dbUser = 'username'; // Database Username
$dbPass = 'password'; // Database Password
exec( 'mysqldump --host="'.$dbHost.'" --user="'.$dbUser.'" --password="'.$dbPass.'" --add-drop-table "finaldb" | gzip > "'.$dbFile.'"' );

Answer 2

Create somewhere a script to make your rolling backups, like this (untested, but should work):

#!/bin/bash

BKPDIR=dailbackup  # You must use absolute path here
DB=finaldb
USERNAME=myusername
PASSWORD=mypassword

BKPFILE=${BKPDIR}/`date +%Y-%m-%d`/final_db_`date +%H`.sql

# Create backup
mysqldump --user=${USERNAME} --password=${PASSWORD} ${DB} | gzip -c > ${BKPFILE}

# Remove older backups (> 7 days),
# unless you want to run out of drive space
find ${BKPDIR} -mtime +7 -print0 | xargs -0 rm -rf

Then setup this script to run as an hourly cronjob:

crontab -e

0 * * * * /absolute-path-to-where-you-saved-the-script

Answer 3

Untested one liner:

mysqldump -u*user* -p*password* -P*dbport* -h localhost finaldb > /.../dailbackup/final_db_$(date +%Y-%m-%d_%H_%M).sql

just add it to your cron job or wrap it in a script and you are done

Answer 4

crontab -e

putting this:

the_date='date +%Y%m%d'
the_hour='date +%H'
0 * * * * mysqldump OPTIONS > /dailbackup/`$the_date`/final_db_`$the_hour`.sql

the above cron is allow you to backup database every hour and using the %H as sql file name

Answer 5

Yes ofcourse, you can do it as long as your mysql server is up and listening :). You will need to make a shell or perl script and use edit the crond using the below command (in Fedora):

crontab -e

Components of your cron job is ::

1) Path to your script(executable)

2) Minutes(00-59)

3) Hours (00 - 23)

4) Month (01-12)

5) Day (01-31)

6) Day of the week (00 -06 with 00 as Sunday)

Example :: You wat to run test_pl script every day at 1200

entry in crontab will be ::

00 12 * * * /home/jok/test_pl