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https://github.com/kevinveenbirkenbach/computer-playbook.git
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50 lines
2.0 KiB
Bash
50 lines
2.0 KiB
Bash
#!/bin/bash
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# @param $1 hostname from which backup should be pulled
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# error counter
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errors=0
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remote_host="backup@$1"
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remote_machine_id="$( (ssh "$remote_host" sha256sum /etc/machine-id) | head -c 64 )" || exit 1
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general_backup_machine_dir="/Backups/$remote_machine_id/"
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remote_backup_types="$(ssh "$remote_host" find "$general_backup_machine_dir" -maxdepth 1 -type d -execdir basename {} ';')" || exit 1
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for backup_type in $remote_backup_types; do
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if [ "$backup_type" != "$remote_machine_id" ]; then
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general_backup_type_dir="$general_backup_machine_dir""$backup_type/"
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# folder which contains versions
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general_versions_dir="$general_backup_type_dir""versions/"
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# link name of last backup
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general_latest_version_link="$general_backup_type_dir""latest"
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# this folder contains the last backup
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local_latest_version_dir="$general_versions_dir$(date '+%Y%m%d%H%M%S')/"
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# this is the link name of the previous version
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local_previous_version_link="$general_backup_type_dir""previous"
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#identifiy previous version
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local_versions=( $(basename -a "$general_versions_dir"*/ | sort) )|| exit 1
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local_last_version="${local_versions[-1]}" || exit 1
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local_previous_version_dir="$general_versions_dir""$last_version/"
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# source path of the backup files:
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remote_last_version_dir="$(readlink -f $general_latest_version_link)"
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remote_source_path="$remote_host:$remote_last_version_dir/"
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# create working folders:
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mkdir -vp "$local_latest_version_dir"
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# delete links
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rm -v "$general_latest_version_link"
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rm -v "$local_previous_version_link"
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# create links
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ln -vs "$local_latest_version_dir" "$general_latest_version_link" || exit 1
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ln -vs "$local_previous_version_dir" "$local_previous_version_link"|| exit 1
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# do backup:
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rsync -abP --delete --delete-excluded --rsync-path="sudo rsync" --link-dest="$local_previous_version_link" "$remote_source_path" "$general_latest_version_link" || ((errors+=1));
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fi
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done
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exit $errors;
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