mirror of
https://github.com/kevinveenbirkenbach/computer-playbook.git
synced 2024-09-20 08:13:12 +02:00
86 lines
3.0 KiB
Bash
86 lines
3.0 KiB
Bash
#!/bin/bash
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# @param $1 hostname from which backup should be pulled
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echo "pulling backups from: $1" &&
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# error counter
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errors=0 &&
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echo "loading meta data..." &&
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remote_host="backup@$1" &&
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echo "host address: $remote_host" &&
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remote_machine_id="$( (ssh "$remote_host" sha256sum /etc/machine-id) | head -c 64 )" &&
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echo "remote machine id: $remote_machine_id" &&
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general_backup_machine_dir="/Backups/$remote_machine_id/" &&
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echo "backup dir: $general_backup_machine_dir" &&
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remote_backup_types="$(ssh "$remote_host" "find $general_backup_machine_dir -maxdepth 1 -type d -execdir basename {} ;")" &&
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echo "backup types: $remote_backup_types" || 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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echo "backup type: $backup_type" &&
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general_backup_type_dir="$general_backup_machine_dir""$backup_type/" &&
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general_versions_dir="$general_backup_type_dir" &&
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local_previous_version_dir="$(ls -d $general_versions_dir* | tail -1)" &&
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echo "last local backup: $local_previous_version_dir" &&
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remote_backup_versions="$(ssh "$remote_host" ls -d "$general_backup_type_dir"\*)" &&
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echo "remote backup versions: $remote_backup_versions" &&
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remote_last_backup_dir=$(echo "$remote_backup_versions" | tail -1) &&
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echo "last remote backup: $remote_last_backup_dir" &&
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remote_source_path="$remote_host:$remote_last_backup_dir/" &&
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echo "source path: $remote_source_path" &&
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local_backup_destination_path=$remote_last_backup_dir &&
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echo "backup destination: $local_backup_destination_path" &&
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echo "creating local backup destination folder..." &&
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mkdir -vp "$local_backup_destination_path" &&
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echo "starting backup..."
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rsync_command='rsync -abP --delete --delete-excluded --rsync-path="sudo rsync" --link-dest="'$local_previous_version_dir'" "'$remote_source_path'" "'$local_backup_destination_path'"'
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echo "executing: $rsync_command"
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retry_count=0
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max_retries=12
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retry_delay=300 # Retry delay in seconds (5 minutes)
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last_retry_start=0
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max_retry_duration=43200 # Maximum duration for a single retry attempt (12 hours)
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while [[ $retry_count -lt $max_retries ]]; do
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echo "Retry attempt: $((retry_count + 1))"
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if [[ $retry_count -gt 0 ]]; then
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current_time=$(date +%s)
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last_retry_duration=$((current_time - last_retry_start))
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if [[ $last_retry_duration -ge $max_retry_duration ]]; then
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echo "Last retry took more than 12 hours, increasing max retries to 12."
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max_retries=12
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fi
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fi
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last_retry_start=$(date +%s)
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eval "$rsync_command"
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rsync_exit_code=$?
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if [[ $rsync_exit_code -eq 0 ]]; then
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break
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fi
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retry_count=$((retry_count + 1))
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sleep $retry_delay
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done
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if [[ $rsync_exit_code -ne 0 ]]; then
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echo "Error: rsync failed after $max_retries attempts"
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((errors += 1))
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fi
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fi
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done
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exit $errors;
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