initial

Dockerfile

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+FROM python:2-onbuild
+CMD ['python', './backup.py']

backup.py

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+import argparse
+import subprocess
+from datetime import datetime
+
+from apscheduler.schedulers.background import BackgroundScheduler
+from docker import Client
+
+
+scheduler = BackgroundScheduler()
+
+
+def backup(socket, outdir, stack, services):
+    api = Client(base_url=args.socket)
+    for service in services:
+        containers = api.containers(
+            filters={
+                'label': "io.rancher.project_service.name={}/{}".format(
+                    stack,
+                    service,
+                )
+            }
+        )
+    
+        for container in containers:
+    
+            for mount in container.get('Mounts'):
+                name = mount.get('Name')
+                source = mount.get('Source')
+      
+                outfile="{outdir}/{stack}-{service}-{name}-{date}-{container}.tgz".format(
+                    outdir=outdir,
+                    stack=stack,
+                    service=service,
+                    name=name,
+                    date=datetime.now().strftime('%Y%m%d-%H%M%S'),
+                    container=container.get('Id')[:8],
+                )
+                subprocess.call([
+                    "tar",
+                    "-cpzf",
+                    outfile,
+                    source,
+                ])
+
+parser = argparse.ArgumentParser(description="backup a rancher services docker volumes")
+parser.add_argument('socket', default='unix://var/run/docker.sock',
+                    help="docker socket")
+parser.add_argument('outdir')
+parser.add_argument('stack', help="rancher stack name")
+parser.add_argument('services', metavar='service', nargs='+',
+                    help="rancher service names")
+args = parser.parse_args()
+backup(args.socket, args.outdir, args.stack, args.services)
+
+scheduler.start()
+scheduler.add_job(
+    func=backup,
+    trigger='interval',
+    days=1,
+    args=(args.socket, args.outdir, args.stack, args.services),
+)

requirements.txt

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+apscheduler
+docker-py