Thread: Automatic MySQL Backup Script

By canela
(Transferred from the wiki by Peter)

I modified crouse’s mysql backup script with some modifications and have been using it for a few weeks. It saved my tush yesterday, so I thought I’d share it.

1. It stores backup files in the directory /var/backups/mysql that it automatically creates. It also only backs up if MySQL is running by checking for the lock file.
2. The nice thing about it is that you don’t have to specify the names of the databases. It figures it out by itself.
3. Stick it in cron, and make sure you have enough space in /var !
4. The script is really simple, and won’t backup databases with the string "Database" (with the capitalization) in the name
5. You are free to modify it if you think you can get better functionality without making it too complicated. Here is the forum thread where I mentioned it first. You can post comments on it there.

You run it like this:

Code:

# mysql-backup <root-username> <root-password>The code looks like this:

Here is the script

Code:

#!/bin/bash 
LOCK_FILE="/var/lock/subsys/mysqld"
# Create the backup directory if it doesn't already exist
if [ ! -d /var/backups/mysql ]; then
     mkdir -p /var/backups/mysql
fi
# Do backups
if [ -f "$LOCK_FILE" ]; then
    # Do MySQL backups
    for i in `/usr/bin/mysql -B -u $1 -e 'show databases' -p$2 | /bin/grep -v Database`; do
        /usr/bin/mysqldump --opt -u $1 -p$2 $i | \
           gzip > /var/backups/mysql/$i.`date --iso-8601`.sql.gz
    done
fi