kevinveenbirkenbach/docker-volume-backup
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Implemented create_volume_directory

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Kevin Veen-Birkenbach 2023-12-26 14:34:32 +01:00
parent 540797f244
commit 581ff501fc
1 changed files with 17 additions and 10 deletions
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27
backup-docker-to-local.py
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@ -25,7 +25,7 @@ def get_machine_id():
"""Get the machine identifier.""" """Get the machine identifier."""
return execute_shell_command("sha256sum /etc/machine-id")[0][0:64] return execute_shell_command("sha256sum /etc/machine-id")[0][0:64]
def create_backup_directories(base_dir, machine_id, repository_name, backup_time): def create_version_directory(base_dir, machine_id, repository_name, backup_time):
"""Create necessary directories for backup.""" """Create necessary directories for backup."""
version_dir = os.path.join(base_dir, machine_id, repository_name, backup_time) version_dir = os.path.join(base_dir, machine_id, repository_name, backup_time)
pathlib.Path(version_dir).mkdir(parents=True, exist_ok=True) pathlib.Path(version_dir).mkdir(parents=True, exist_ok=True)
@ -36,7 +36,7 @@ def get_instance(container):
print(f"Extracted instance name: {instance_name}") print(f"Extracted instance name: {instance_name}")
return instance_name return instance_name
def backup_database(container, databases, version_dir, db_type): def backup_database(container, databases, volume_dir, db_type):
"""Backup database (MariaDB or PostgreSQL) if applicable.""" """Backup database (MariaDB or PostgreSQL) if applicable."""
print(f"Starting database backup for {container} using {db_type}...") print(f"Starting database backup for {container} using {db_type}...")
instance_name = get_instance(container) instance_name = get_instance(container)
@ -55,7 +55,7 @@ def backup_database(container, databases, version_dir, db_type):
# Get the first (and only) entry # Get the first (and only) entry
database_entry = database_entries.iloc[0] database_entry = database_entries.iloc[0]
backup_destination_dir = os.path.join(version_dir, "sql") backup_destination_dir = os.path.join(volume_dir, "sql")
pathlib.Path(backup_destination_dir).mkdir(parents=True, exist_ok=True) pathlib.Path(backup_destination_dir).mkdir(parents=True, exist_ok=True)
backup_destination_file = os.path.join(backup_destination_dir, f"backup.sql") backup_destination_file = os.path.join(backup_destination_dir, f"backup.sql")
@ -80,10 +80,10 @@ def backup_database(container, databases, version_dir, db_type):
execute_shell_command(backup_command) execute_shell_command(backup_command)
print(f"Database backup for {container} completed.") print(f"Database backup for {container} completed.")
def backup_volume(volume_name, version_dir): def backup_volume(volume_name, volume_dir):
"""Backup files of a volume.""" """Backup files of a volume."""
print(f"Starting backup routine for volume: {volume_name}") print(f"Starting backup routine for volume: {volume_name}")
files_rsync_destination_path = os.path.join(version_dir, volume_name, "files") files_rsync_destination_path = os.path.join(volume_dir, "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)
source_dir = f"/var/lib/docker/volumes/{volume_name}/_data/" source_dir = f"/var/lib/docker/volumes/{volume_name}/_data/"
rsync_command = f"rsync -abP --delete --delete-excluded {source_dir} {files_rsync_destination_path}" rsync_command = f"rsync -abP --delete --delete-excluded {source_dir} {files_rsync_destination_path}"
@ -127,20 +127,27 @@ def is_any_image_not_whitelisted(containers, images):
"""Check if any of the containers are using images that are not whitelisted.""" """Check if any of the containers are using images that are not whitelisted."""
return any(not is_image_whitelisted(container, images) for container in containers) return any(not is_image_whitelisted(container, images) for container in containers)
def create_volume_directory(version_dir,volume_name):
"""Create necessary directories for backup."""
volume_dir = os.path.join(version_dir, volume_name)
pathlib.Path(volume_dir).mkdir(parents=True, exist_ok=True)
return volume_dir
def backup_routine_for_volume(volume_name, containers, databases, version_dir, whitelisted_images): def backup_routine_for_volume(volume_name, containers, databases, version_dir, whitelisted_images):
"""Perform backup routine for a given volume.""" """Perform backup routine for a given volume."""
for container in containers: for container in containers:
volume_dir = create_volume_directory(version_dir,volume_name)
if has_image(container, 'mariadb'): if has_image(container, 'mariadb'):
backup_database(container, databases, version_dir, 'mariadb') backup_database(container, databases, volume_dir, 'mariadb')
elif has_image(container, 'postgres'): elif has_image(container, 'postgres'):
backup_database(container, databases, version_dir, 'postgres') backup_database(container, databases, volume_dir, 'postgres')
else: else:
if is_any_image_not_whitelisted(containers, whitelisted_images): if is_any_image_not_whitelisted(containers, whitelisted_images):
stop_containers(containers) stop_containers(containers)
backup_volume(volume_name, version_dir) backup_volume(volume_name, volume_dir)
start_containers(containers) start_containers(containers)
else: else:
backup_volume(volume_name, version_dir) backup_volume(volume_name, volume_dir)
def main(): def main():
print('Start backup routine...') print('Start backup routine...')
@ -149,7 +156,7 @@ def main():
machine_id = get_machine_id() machine_id = get_machine_id()
backups_dir = '/Backups/' backups_dir = '/Backups/'
backup_time = datetime.now().strftime("%Y%m%d%H%M%S") backup_time = datetime.now().strftime("%Y%m%d%H%M%S")
version_dir = create_backup_directories(backups_dir, machine_id, repository_name, backup_time) version_dir = create_version_directory(backups_dir, machine_id, repository_name, backup_time)
print('Start volume backups...') print('Start volume backups...')
databases = pandas.read_csv(os.path.join(dirname, "databases.csv"), sep=";") databases = pandas.read_csv(os.path.join(dirname, "databases.csv"), sep=";")