kevinveenbirkenbach/docker-volume-backup
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Implemented logic for link dest

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Kevin Veen-Birkenbach 2022-03-28 17:08:54 +02:00
parent f0a1b3e742
commit 163ee6c7ab
1 changed files with 17 additions and 11 deletions
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28
docker-volume-backup.py
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@ -42,25 +42,19 @@ backup_repository_folder = backups_folder + machine_id + "/" + repository_name +
volume_names = bash("docker volume ls --format '{{.Name}}'") volume_names = bash("docker volume ls --format '{{.Name}}'")
for volume_name in volume_names: for volume_name in volume_names:
print('start backup routine for volume: ' + volume_name) print('start backup routine for volume: ' + volume_name)
containers = bash("docker ps --filter volume=\""+ volume_name +"\" --format '{{.Names}}'") containers = bash("docker ps --filter volume=\"" + volume_name + "\" --format '{{.Names}}'")
if len(containers) == 0: if len(containers) == 0:
print('skipped due to no running containers using this volume.') print('skipped due to no running containers using this volume.')
else: else:
container = containers[0] container = containers[0]
source_path = "/var/lib/docker/volumes/" + volume_name + "/_data" source_path = "/var/lib/docker/volumes/" + volume_name + "/_data"
log_path = backup_repository_folder + "log.txt"
destination_path = backup_repository_folder + "versions/"+ backup_time + "/" + volume_name
versions_dir_path = backup_repository_folder + "versions/" versions_dir_path = backup_repository_folder + "versions/"
destination_path = versions_dir_path + backup_time + "/" + volume_name
databases_entries = databases.loc[databases['container'] == container] databases_entries = databases.loc[databases['container'] == container]
backup_versions = os.listdir(versions_dir_path)
backup_versions.sort(reverse=True)
last_version = backup_versions[0]
last_version_dir_path = versions_dir_path + last_version + "/" + volume_name
current_version_dir_path = versions_dir_path + backup_time + "/" + volume_name
if len(databases_entries) == 1: if len(databases_entries) == 1:
print("Backup database...") print("Backup database...")
sql_cp_source_path = destination_path + "/sql" sql_cp_source_path = destination_path + "/sql"
sql_cp_destination_path = current_version_dir_path + "/sql" sql_cp_destination_path = destination_path + "/sql"
sql_destination_dir_file_path = sql_cp_destination_path + "/backup.sql" sql_destination_dir_file_path = sql_cp_destination_path + "/backup.sql"
pathlib.Path(sql_cp_destination_path).mkdir(parents=True, exist_ok=True) pathlib.Path(sql_cp_destination_path).mkdir(parents=True, exist_ok=True)
database_entry = databases_entries.iloc[0] database_entry = databases_entries.iloc[0]
@ -70,8 +64,20 @@ for volume_name in volume_names:
print("Backup files...") print("Backup files...")
files_rsync_destination_path = destination_path + "/files" files_rsync_destination_path = destination_path + "/files"
pathlib.Path(files_rsync_destination_path).mkdir(parents=True, exist_ok=True) pathlib.Path(files_rsync_destination_path).mkdir(parents=True, exist_ok=True)
print("Backup data during container is running...") versions = os.listdir(versions_dir_path)
rsync_command = "rsync -abP --delete --delete-excluded --log-file=" + log_path +" --backup-dir=" + files_version_dir_path +" '"+ source_path +"/' " + files_rsync_destination_path versions.sort(reverse=True)
if len(versions) >= 0:
last_version = versions[0]
last_version_dir_path = versions_dir_path + last_version + "/" + volume_name
if os.path.isdir(last_version_dir_path):
link_dest_parameter="--link-dest='" + last_version_dir_path + "'"
else:
print("No previous version exists in path "+ last_version_dir_path + ".")
link_dest_parameter=""
else:
print("No previous version exists in path "+ last_version_dir_path + ".")
link_dest_parameter=""
rsync_command = "rsync -abP --delete --delete-excluded " + link_dest_parameter + "'" + source_path + "/' " + files_rsync_destination_path
print_bash(rsync_command) print_bash(rsync_command)
print("stop containers...") print("stop containers...")
print("Backup data after container is stopped...") print("Backup data after container is stopped...")