kevinveenbirkenbach/docker-volume-backup
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Draft translating to python

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Kevin Veen-Birkenbach 2022-01-23 14:04:38 +01:00
parent 2eeb4961d0
commit 7bf07d7fb5
1 changed files with 42 additions and 44 deletions
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docker-volume-backup.py
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@ -1,68 +1,66 @@
#!/bin/python
# Backups volumes of running containers
#
import subprocess
import os, sys
import subprocess, os, sys
from datetime import datetime
def bash(command):
stdout=subprocess.Popen([command],stdout=subprocess.PIPE, shell=True).stdout.read()
if isinstance(stdout, list):
return subprocess.Popen([command],stdout=subprocess.PIPE, shell=True).stdout.read()
else:
return subprocess.Popen([command],stdout=subprocess.PIPE, shell=True).stdout.read()
out, err=subprocess.Popen([command],stdout=subprocess.PIPE, shell=True).communicate()
stdout=out.read().splitlines()
output=[]
for line in stdout:
output.append(line.decode("utf-8"))
if err > 0:
raise Exception("Error is greater then 0", output, command)
return output
def print_bash(command):
output=bash(command)
print(list_to_string(output))
return output
def list_to_string(list):
list_string=""
for element in list:
list_string=list_string + " " + (element.decode("utf-8"))
return list_string;
return str(' '.join(list));
print('start backup routine...')
print('start volume backups...')
backup_time=datetime.now().strftime("%Y%m%d%H%M%S")
backups_folder='/Backups/'
repository_name=os.path.basename(os.path.dirname(__file__))
machine_id=bash("sha256sum /etc/machine-id").decode("utf-8")[0:64]
machine_id=bash("sha256sum /etc/machine-id")[0][0:64]
backup_repository_folder=backups_folder + machine_id + "/" + repository_name + "/"
volume_names=bash("docker volume ls --format '{{.Name}}'").splitlines()
volume_names=bash("docker volume ls --format '{{.Name}}'")
for volume_name in volume_names:
volume_name=volume_name.decode("utf-8")
print('start backup routine for volume: ' + volume_name);
containers=bash("docker ps --filter volume=\""+ volume_name +"\" --format '{{.Names}}'").splitlines()
container=containers[0].decode("utf-8")
containers=bash("docker ps --filter volume=\""+ volume_name +"\" --format '{{.Names}}'")
container=containers[0]
if len(containers) == 0:
print('skipped due to no running containers using this volume.');
else:
print("stop containers:");
print(bash("docker stop " + list_to_string(containers)))
# for source_path in $(docker inspect --format "{{ range .Mounts }}{{ if eq .Type \"volume\"}}{{ if eq .Name \"$volume_name\"}}{{ println .Destination }}{{ end }}{{ end }}{{ end }}" "$container");
# do
# destination_path="$backup_repository_folder""latest/$volume_name" &&
# raw_destination_path="$destination_path/raw" &&
# prepared_destination_path="$destination_path/prepared" &&
# log_path="$backup_repository_folder""log.txt" &&
# backup_dir_path="$backup_repository_folder""diffs/$backup_time/$volume_name" &&
# raw_backup_dir_path="$backup_dir_path/raw" &&
# prepared_backup_dir_path="$backup_dir_path/prepared" || exit 1
# if [ -d "$destination_path" ]
# then
# print('backup volume: $volume_name');
# else
# print('first backup volume: $volume_name');
# mkdir -vp "$raw_destination_path" &&
# mkdir -vp "$raw_backup_dir_path" &&
# mkdir -vp "$prepared_destination_path" &&
# mkdir -vp "$prepared_backup_dir_path" || exit 1
# fi
# docker run --rm --volumes-from "$container" -v "$backups_folder:$backups_folder" "kevinveenbirkenbach/alpine-rsync" sh -c "
# rsync -abP --delete --delete-excluded --log-file=$log_path --backup-dir=$raw_backup_dir_path '$source_path/' $raw_destination_path" &&
print(bash("docker start " + list_to_string(containers)))
# done
# fi
# print('end backup routine for volume: $volume_name');
# done
print_bash("docker stop " + list_to_string(containers))
for source_path in bash("docker inspect --format \"{{ range .Mounts }}{{ if eq .Type \\\"volume\\\"}}{{ if eq .Name \\\"" + volume_name +"\\\"}}{{ println .Destination }}{{ end }}{{ end }}{{ end }}\" \""+ container +"\""):
destination_path=backup_repository_folder+"latest/"+ volume_name
raw_destination_path="destination_path/raw"
prepared_destination_path=destination_path + "/prepared"
log_path=backup_repository_folder + "log.txt"
backup_dir_path=backup_repository_folder + "diffs/"+ backup_time + "/" + volume_name
raw_backup_dir_path=backup_dir_path + "/raw"
prepared_backup_dir_path=backup_dir_path + "/prepared"
if path.exists(destination_path):
print("backup volume: " + volume_name);
else:
print("first backup volume" + volume_name);
os.mkdir(raw_destination_path)
os.mkdir(raw_backup_dir_path)
os.mkdir(prepared_destination_path)
os.mkdir(prepared_backup_dir_path)
print_bash("rsync -abP --delete --delete-excluded --log-file=" + log_path +" --backup-dir=" + raw_backup_dir_path +" '"+ source_path +"/' " + raw_destination_path)
print_bash("docker run --rm --volumes-from " + container + " -v "+backups_folder+":"+ backups_folder +" \"kevinveenbirkenbach/alpine-rsync\" sh -c ")
print("start containers:")
print_bash("docker start " + list_to_string(containers))
print("end backup routine for volume:" + volume_name)
print('finished volume backups.')
print('restart docker service...')
# systemctl restart docker || exit 1
print_bash("systemctl restart docker")
print('finished backup routine.')