Gerrit Backup Script

Here’s a cool cron script I wrote to backup your Gerrit¬†instance to a shared folder:

Some requirements and assumptions:

  • You’ll need 7z available on the path.
  • Edit the share location and the username and password.
  • Keeps the past 30 days of all back-ups on the server.
  • Keeps the past 14 days of MySQL backups on the share. Edit the corresponding value in the script to change as you need it.
  • Keeps the past 7 days of Gerrit backups on the share. Edit the corresponding value in the script to change as you need it.
  • MySQL is used for Gerrit’s datastore You can remove those sections if you’re not using it. Just make sure you’re backing up the datastore!
#!/bin/bash

# Backup the mysql databases
mysqldump-secure --cron

# Remove old backups
find /var/backups/mysql/* -mtime +30 -exec rm {} \;

#Gerrit Home Directory Filename
filename="gerrit-home-$(date '+%F-%H%M').tar.7z"

echo "Starting backup of gerrit home directory..."
#Perform Backup of the gerrit home directory.
tar -cf - /home/gerrit | 7z a -si "/var/backups/gerrit/$filename"
echo "Backup of home directory completed!"

echo "Removing old backups..."
#Remove old backups
find /var/backups/gerrit/* -mtime +30 -exec rm {} \;
echo "Completed removing old backups."

#make the share folder incase it's gone.
if [ ! -d "/mnt/backup-share" ]; then
	mkdir /mnt/backup-share
fi

#mount the CIFS share for the backup location
mount -t cifs -o username=rodsqladmin,password=*r6fE?eW //GVLVIDFSCS02P/MGardner$ /mnt/backup-share/

#make the share folder incase it's gone.
if [ ! -d "/tmp/tobackup" ]; then
        mkdir /tmp/tobackup
fi
if [ ! -d "/tmp/tobackup/mysql" ]; then
        mkdir /tmp/tobackup/mysql/
fi
if [ ! -d "/tmp/tobackup/gerrit" ]; then
        mkdir /tmp/tobackup/gerrit/
fi

echo "Preparing backups for copying..."
find /var/backups/mysql -type f -mtime -14 > /tmp/tobackup/mysql
find /var/backups/gerrit -type f -mtime -7 > /tmp/tobackup/gerrit

echo "Copying backups..."
#Rsync the backups
rsync -a /tmp/tobackup/mysql/ /mnt/backup-share/mysql
rsync -a /tmp/tobackup/gerrit/ /mnt/backup-share/gerrit
echo "Copying complete!"

echo "Performing final cleanup..."

find /mnt/backup-share/mysql/* -mtime +14 -exec rm {} \;
find /mnt/backup-share/gerrit/* -mtime +7 -exec rm {} \;

rm -rf /tmp/tobackup

echo "Cleanup complete!"

echo "Unmounting share and wrapping up!"

#unmount the share
umount /mnt/backup-share

echo "Backup complete!"

I’ve placed this script in my /etc/cron.daily folder to have it run once a day.

About Mike

I'm a software engineer. Look into the about page for more information about me.
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