Backing up Git repositories by creating bundles and syncing them to a remote server using Rsync.

backup-git-repos.sh

#!/bin/bash

# Author: flandersen
# Date:   29.03.2020
# https://gist.github.com/flandersen/6d33c609de80247c9059bf8c3e2ade05
#
# Backups the repositories to a backup directory and syncronizes
# the backup dir to a backup server using rsync.
#
# Example usage:
# backup-git-repos.sh /srv/repos /var/backups/repos

if [ "$#" -ne 2 ]; then
    echo "Usage: $0 <sourcedir> <backupdir>"
    exit 1
fi

sourcedir="$1"
backupdir="$2"

if [ ! -d "$sourcedir" ]
then
    echo "Source dir $sourcedir does not exists."
    exit 1
fi

if [ ! -d "$backupdir" ]
then
    echo "Backup dir $backupdir does not exists."
    exit 1
fi

cd "$sourcedir"

for dir in *.git; do
    echo "Creating a bundle for repo $dir."
    cd "$dir"

    # getting refcount of the repository.
    refcount=$(git show-ref | wc -l)
    echo "Repo has $refcount ref(s)."

    if [ $refcount -gt 0 ]; then
        echo "---------------------------->"
        bundlepath="$backupdir/$dir.bundle"

        # create repo bundle.
        echo "Creating git-bundle."
        git bundle create "$bundlepath" --all
        [ $? -eq 0 ]  || exit 1
    else
        echo "Skipping because it is empty."
    fi

    echo "<---------------------------"
    cd ..
done

# Rsyncing the bundles to the backup server using ssh without RSA SSH-key.
rsync -avHPe "ssh -p8022" "$backupdir" -e "ssh -vi ~/.ssh/rsyncTest" rsync@backupsrv:/volume1/NetBackup