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implemented backup-pull from static latest instead of relative

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Kevin Veen-Birkenbach 2023-04-12 13:37:04 +02:00
parent 920d94d69c
commit 4bb0de28c8
2 changed files with 38 additions and 28 deletions
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46
roles/native-pull-primary-backups/files/pull-remote-backup.sh
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@ -4,42 +4,46 @@
# error counter
errors=0
source_host="backup@$1"
source_machine_id="$( (ssh "$source_host" sha256sum /etc/machine-id) | head -c 64)" || exit 1
source_path="/Backups/$source_machine_id/"
directories="$(ssh "$source_host" find "$source_path" -maxdepth 1 -type d)" || exit 1
remote_host="backup@$1"
remote_machine_id="$( (ssh "$remote_host" sha256sum /etc/machine-id) | head -c 64 )" || exit 1
general_backup_machine_dir="/Backups/$remote_machine_id/"
remote_backup_types="$(ssh "$remote_host" find "$general_backup_machine_dir" -maxdepth 1 -type d -execdir basename {} ';')" || exit 1
for backup_type_dir in $directories; do
if [ "$backup_type_dir" != "$source_path" ]; then
for backup_type in $remote_backup_types; do
if [ "$backup_type" != "$remote_machine_id" ]; then
general_backup_type_dir="$general_backup_machine_dir""$backup_type/"
# folder which contains versions
versions_dir="$backup_type_dir/versions/"
general_versions_dir="$general_backup_type_dir""versions/"
# link name of last backup
latest_version_link="$backup_type_dir/latest"
general_latest_version_link="$general_backup_type_dir""latest"
# this folder contains the last backup
latest_version_dir="$versions_dir$(date '+%Y%m%d%H%M%S')/"
local_latest_version_dir="$general_versions_dir$(date '+%Y%m%d%H%M%S')/"
# this is the link name of the previous version
previous_version_link="$backup_type_dir/previous"
# source path of the backup files:
remote_source_path="$source_host:$latest_version_link/"
local_previous_version_link="$general_backup_type_dir""previous"
#identifiy previous version
versions=( $(basename -a "$versions_dir"*/ | sort) )|| exit 1
last_version="${versions[-1]}" || exit 1
previous_version_dir="$versions_dir$last_version/"
local_versions=( $(basename -a "$general_versions_dir"*/ | sort) )|| exit 1
local_last_version="${local_versions[-1]}" || exit 1
local_previous_version_dir="$general_versions_dir""$last_version/"
# source path of the backup files:
remote_last_version_dir="$(readlink -f $general_latest_version_link)"
remote_source_path="$remote_host:$remote_last_version_dir/"
# create working folders:
mkdir -vp "$latest_version_dir"
mkdir -vp "$local_latest_version_dir"
# delete links
rm -v "$latest_version_link"
rm -v "$previous_version_link"
rm -v "$general_latest_version_link"
rm -v "$local_previous_version_link"
# create links
ln -vs "$latest_version_dir" "$latest_version_link" || exit 1
ln -vs "$previous_version_dir" "$previous_version_link"|| exit 1
ln -vs "$local_latest_version_dir" "$general_latest_version_link" || exit 1
ln -vs "$local_previous_version_dir" "$local_previous_version_link"|| exit 1
# do backup:
rsync -abP --delete --delete-excluded --rsync-path="sudo rsync" --link-dest="$previous_version_link" "$remote_source_path" "$latest_version_link" || ((errors+=1));
rsync -abP --delete --delete-excluded --rsync-path="sudo rsync" --link-dest="$local_previous_version_link" "$remote_source_path" "$general_latest_version_link" || ((errors+=1));
fi
done
exit $errors;

20
roles/native-user-backup/templates/ssh-wrapper.sh.j2
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@ -7,17 +7,23 @@ then
fi
# define executable commands
hashed_machine_id_command="sha256sum /etc/machine-id";
find_command="find /Backups/{{hashed_machine_id.stdout}}/ -maxdepth 1 -type d";
rsync_command="sudo rsync --server --sender -blogDtpre.iLsfxCIvu . /Backups/{{hashed_machine_id.stdout}}/docker-volume-backup/latest/"
get_hashed_machine_id="sha256sum /etc/machine-id";
get_backup_types="find /Backups/{{hashed_machine_id.stdout}}/ -maxdepth 1 -type d -execdir basename {} ';'";
# @todo This configuration is not scalable yet. If other backup services then docker-volume-backup are integrated, this logic needs to be optimized
get_static_last_version_dir="readlink -f /Backups/{{hashed_machine_id.stdout}}/docker-volume-backup/latest/"
rsync_command="sudo rsync --server --sender -blogDtpre.iLsfxCIvu . $($get_static_last_version_dir)/"
# filter commands
case "$SSH_ORIGINAL_COMMAND" in
"$hashed_machine_id_command")
$hashed_machine_id_command
"$get_hashed_machine_id")
$get_hashed_machine_id
;;
"$find_command")
$find_command
"$get_static_last_version_dir")
$get_static_last_version_dir
;;
"$get_backup_types")
$get_backup_types
;;
"$rsync_command")
$rsync_command