solved pull backup bugs

This commit is contained in:
Kevin Veen-Birkenbach 2023-04-12 20:32:52 +02:00
parent 526284f0e4
commit 56a0c60584
5 changed files with 30 additions and 9 deletions

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@ -25,3 +25,4 @@ To track what the service is doing execute the following command:
## see
- https://superuser.com/questions/363444/how-do-i-get-the-output-and-exit-value-of-a-subshell-when-using-bash-e
- https://gist.github.com/otkrsk/b0ffd4018e8a79b9010c461af298471e
- https://serverfault.com/questions/304125/rsync-seems-incompatible-with-bashrc-causes-is-your-shell-clean

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@ -1,13 +1,24 @@
#!/bin/bash
# @param $1 hostname from which backup should be pulled
echo "pulling backups from: $1"
# error counter
errors=0
echo "loading meta data..."
remote_host="backup@$1"
echo "host address: $remote_host"
remote_machine_id="$( (ssh "$remote_host" sha256sum /etc/machine-id) | head -c 64 )" || exit 1
echo "remote machine id: $remote_machine_id"
general_backup_machine_dir="/Backups/$remote_machine_id/"
remote_backup_types="$(ssh "$remote_host" find "$general_backup_machine_dir" -maxdepth 1 -type d -execdir basename {} ';')" || exit 1
echo "backup dir: $general_backup_machine_dir"
remote_backup_types="$(ssh "$remote_host" "find $general_backup_machine_dir -maxdepth 1 -type d -execdir basename {} ;")" || exit 1
echo "backuptypes: $remote_backup_types"
for backup_type in $remote_backup_types; do
if [ "$backup_type" != "$remote_machine_id" ]; then
@ -25,11 +36,13 @@ for backup_type in $remote_backup_types; do
#identifiy previous 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""$last_version/"
local_previous_version_dir="$general_versions_dir""$local_last_version/"
# source path of the backup files:
remote_last_version_dir="$(readlink -f $general_latest_version_link)"
remote_last_version_dir="$(ssh "$remote_host" readlink -f $general_latest_version_link)"
echo "last remote backup: $remote_last_version_dir"
remote_source_path="$remote_host:$remote_last_version_dir/"
echo "source path: $remote_source_path"
# create working folders:
mkdir -vp "$local_latest_version_dir"
@ -40,10 +53,12 @@ for backup_type in $remote_backup_types; do
# create links
ln -vs "$local_latest_version_dir" "$general_latest_version_link" || exit 1
ln -vs "$local_previous_version_dir" "$local_previous_version_link"|| exit 1
ln -vs "$local_previous_version_dir" "$local_previous_version_link" || exit 1
# do backup:
rsync -abP --delete --delete-excluded --rsync-path="sudo rsync" --link-dest="$local_previous_version_link" "$remote_source_path" "$general_latest_version_link" || ((errors+=1));
rsync_command='rsync -abP --delete --delete-excluded --rsync-path="sudo rsync" --link-dest="'$local_previous_version_link'" "'$remote_source_path'" "'$general_latest_version_link'"'
echo "executing: $rsync_command"
eval "$rsync_command" || ((errors+=1));
fi
done
exit $errors;

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@ -8,6 +8,7 @@
copy:
src: pull-remote-backup.sh
dest: "{{docker_pull_primary_backups_folder}}pull-remote-backup.sh"
mode: 0755
- name: create pull-remote-backups.service
template: src=pull-remote-backups.service.j2 dest=/etc/systemd/system/pull-remote-backups.service
@ -18,4 +19,8 @@
notify: restart pull-remote-backups timer
- name: create pull-remote-backups.sh
template: src=pull-remote-backups.sh.j2 dest={{docker_pull_primary_backups_folder}}pull-remote-backups.sh
template:
src: pull-remote-backups.sh.j2
dest: "{{docker_pull_primary_backups_folder}}pull-remote-backups.sh"
mode: 0755

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@ -3,6 +3,6 @@
hosts="{{pull_remote_backups_hosts}}";
errors=0
for host in $hosts; do
bash {{docker_pull_primary_backups_folder}}/pull-remote-backup.sh $host || ((errors+=1));
bash {{docker_pull_primary_backups_folder}}pull-remote-backup.sh $host || ((errors+=1));
done;
exit $errors;

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@ -8,10 +8,10 @@ fi
# define executable commands
get_hashed_machine_id="sha256sum /etc/machine-id";
get_backup_types="find /Backups/{{hashed_machine_id.stdout}}/ -maxdepth 1 -type d -execdir basename {} ';'";
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/"
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