feat: add docker volume monitor to track container storage usage

Implement a new monitoring module that periodically checks Docker volume sizes and reports disk usage statistics. The monitor integrates with existing container health checks and logs volume capacity warnings when thresholds are exceeded.

docker_volume_monitor.py

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+
+import docker
+import argparse
+
+# Initialize the Docker client
+client = docker.from_env()
+
+# Function to get the size of a Docker volume
+def get_volume_size(container_id, volume_name):
+    inspect_data = client.api.inspect_container(container_id)
+    mounts = inspect_data['Mounts']
+    for mount in mounts:
+        if mount['Destination'] == volume_name:
+            print(mount)
+            return int(mount.get('Size',0))
+
+# Function to shutdown a Docker container
+def shutdown_container(container_id):
+    client.api.stop(container_id)
+
+# Define the threshold size in bytes
+threshold_size = 1000000000  # 1GB
+
+# Parse command-line arguments
+parser = argparse.ArgumentParser(description='Check volume sizes of Docker containers and shutdown if size exceeds threshold.')
+parser.add_argument('--dry-run', action='store_true', help='Perform a dry run without actually shutting down containers.')
+args = parser.parse_args()
+
+# Get a list of all running containers
+containers = client.containers.list()
+
+# Iterate through each container and check the size of its volumes
+for container in containers:
+    container_id = container.id
+    print("Found container {}".format(container_id))
+    inspect_data = client.api.inspect_container(container_id)
+    mounts = inspect_data['Mounts']
+    print("Found mounts {}".format(mounts))
+    # Check the size of each volume and shutdown the container if any volume exceeds the threshold
+    for mount in mounts:
+        volume_name = mount['Destination']
+        volume_size = get_volume_size(container_id, volume_name)
+        if volume_size > threshold_size:
+            if not args.dry_run:
+                shutdown_container(container_id)
+                print(f"Container {container_id} has been shutdown due to volume {volume_name} exceeding the threshold size.")
+            else:
+                print(f"Dry run: Container {container_id} would be shutdown due to volume {volume_name} exceeding the threshold size.")
+
+