mirror of
https://github.com/kevinveenbirkenbach/docker-volume-backup.git
synced 2024-10-31 23:33:11 +01:00
87 lines
3.9 KiB
Python
87 lines
3.9 KiB
Python
#!/bin/python
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# Backups volumes of running containers
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#
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import subprocess, os, pathlib, pandas
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from datetime import datetime
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def bash(command):
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print(command)
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process = subprocess.Popen([command], stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True)
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out, err = process.communicate()
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stdout = out.splitlines()
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output = []
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for line in stdout:
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output.append(line.decode("utf-8"))
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if process.wait() > bool(0):
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print(command, out, err)
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raise Exception("Error is greater then 0")
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return output
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def print_bash(command):
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output = bash(command)
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print(list_to_string(output))
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return output
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def list_to_string(list):
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return str(' '.join(list))
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print('start backup routine...')
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print('start volume backups...')
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backup_time = datetime.now().strftime("%Y%m%d%H%M%S")
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backups_folder = '/Backups/'
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dirname = os.path.dirname(__file__)
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repository_name = os.path.basename(dirname)
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print('load connection data...')
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databases = pandas.read_csv(dirname + "/databases.csv", sep=";")
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machine_id = bash("sha256sum /etc/machine-id")[0][0:64]
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backup_repository_folder = backups_folder + machine_id + "/" + repository_name + "/"
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volume_names = bash("docker volume ls --format '{{.Name}}'")
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for volume_name in volume_names:
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print('start backup routine for volume: ' + volume_name)
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containers = bash("docker ps --filter volume=\""+ volume_name +"\" --format '{{.Names}}'")
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if len(containers) == 0:
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print('skipped due to no running containers using this volume.')
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else:
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container = containers[0]
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source_path = "/var/lib/docker/volumes/" + volume_name + "/_data"
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log_path = backup_repository_folder + "log.txt"
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destination_path = backup_repository_folder + "versions/"+ backup_time + "/" + volume_name
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versions_dir_path = backup_repository_folder + "versions/"
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databases_entries = databases.loc[databases['container'] == container]
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backup_versions = os.listdir(versions_dir_path)
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backup_versions.sort(reverse=True)
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last_version = backup_versions[0]
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last_version_dir_path = versions_dir_path + last_version + "/" + volume_name
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current_version_dir_path = versions_dir_path + backup_time + "/" + volume_name
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if len(databases_entries) == 1:
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print("Backup database...")
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sql_cp_source_path = destination_path + "/sql"
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sql_cp_destination_path = current_version_dir_path + "/sql"
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sql_destination_dir_file_path = sql_cp_destination_path + "/backup.sql"
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pathlib.Path(sql_cp_destination_path).mkdir(parents=True, exist_ok=True)
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database_entry=databases_entries.iloc[0]
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database_backup_command="docker exec "+ database_entry["container"] + " /usr/bin/mysqldump -u "+ database_entry["username"] + " -p"+ database_entry["password"] + " "+ database_entry["database"] + " > " + sql_destination_dir_file_path
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print_bash(database_backup_command)
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else:
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print("Backup files...")
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files_rsync_destination_path=destination_path + "/files"
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pathlib.Path(files_rsync_destination_path).mkdir(parents=True, exist_ok=True)
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print("Backup data during container is running...")
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rsync_command="rsync -abP --delete --delete-excluded --log-file=" + log_path +" --backup-dir=" + files_version_dir_path +" '"+ source_path +"/' " + files_rsync_destination_path
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print_bash(rsync_command)
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print("stop containers...")
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print("Backup data after container is stopped...")
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print_bash("docker stop " + list_to_string(containers))
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print_bash(rsync_command)
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print("start containers...")
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print_bash("docker start " + list_to_string(containers))
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print("end backup routine for volume:" + volume_name)
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print('finished volume backups.')
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print('restart docker service...')
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print_bash("systemctl restart docker")
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print('finished backup routine.')
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