diff --git a/pyproject.toml b/pyproject.toml
index 0c95c79..d09f2b7 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -40,3 +40,4 @@ dev = [
 periodic_inspector = "hammers.periodic_node_inspector:main"
 floating_ip_reaper = "hammers.ip_cleaner:launch_main"
 expired_project_reaper = "hammers.expired_project_cleaner:launch_main"
+manage_exclusive_use = "hammers.manage_exclusive_use:launch_main"
diff --git a/src/hammers/manage_exclusive_use.py b/src/hammers/manage_exclusive_use.py
new file mode 100644
index 0000000..91d9d36
--- /dev/null
+++ b/src/hammers/manage_exclusive_use.py
@@ -0,0 +1,105 @@
+import argparse
+import collections
+import yaml
+import sys
+import iso8601
+import openstack
+from datetime import timedelta
+
+
+def parse_args(args: list[str]) -> argparse.Namespace:
+    """Handle CLI arguments."""
+    parser = argparse.ArgumentParser()
+
+    parser.add_argument(
+        "--file",
+        type=str,
+        required=True,
+        help="File",
+    )
+    return parser.parse_args(args)
+
+
+def merge_timeframes(timeframes):
+    # Timeframes is a list of (start, end) tuples
+    if not timeframes:
+        return []
+    timeframes.sort()
+    merged = [timeframes[0]]
+    for start, end in timeframes[1:]:
+        last_start, last_end = merged[-1]
+        # print(last_end, start + timedelta(minutes=10))
+        if last_end <= start + timedelta(minutes=10):
+            merged[-1] = (last_start, end)
+        else:
+            merged.append((start, end))
+    return merged
+
+
+def main(arg_list: list[str]) -> None:
+    args = parse_args(arg_list)
+
+    with open(args.file, "r") as f:
+        data = yaml.safe_load(f)
+
+    changes_by_site = {}
+    hosts_by_id = {}
+
+    # Hacky project id stuff. This only works with one project now
+    project_id = None
+    for cloud_site, uuids in data.items():
+        changes_by_project = {}
+        conn = openstack.connect(cloud=cloud_site)
+
+        for host in conn.reservation.hosts():
+            hosts_by_id[host.id] = host
+        allocations = list(conn.reservation.host_allocations())
+        allocs_by_lease_id = collections.defaultdict(list)
+        for alloc in allocations:
+            for reservation in alloc.reservations:
+                allocs_by_lease_id[reservation["lease_id"]].append(alloc.resource_id)
+
+        for uuid in uuids:
+            lease = conn.reservation.get_lease(uuid)
+            project_id = lease.project_id
+            s = iso8601.parse_date(lease.start_date)
+            e = iso8601.parse_date(lease.end_date)
+            lease_allocs = allocs_by_lease_id[uuid]
+            changes_by_host = changes_by_project.get(project_id, collections.defaultdict(list))
+            for alloc in lease_allocs:
+                changes_by_host[alloc].append((s, e))
+            changes_by_project[project_id] = changes_by_host
+        changes_by_site[cloud_site] = changes_by_project
+
+    commands_by_date = collections.defaultdict(list)
+    for site, changes_by_project in changes_by_site.items():
+        print(site)
+        for project, host_dict in changes_by_project.items():
+            for host, times in host_dict.items():
+                print(host, project)
+                h = hosts_by_id[host]
+                print(f"\t{h.properties['node_type']} - {h.properties['node_name']} ({h.id})")
+                merged_times = merge_timeframes(times)
+                for time_tuple in merged_times:
+                    start, end = time_tuple
+                    restricted_reason = f"Node is being used for education project until {end.date()}"
+                    set_cmd = f'OS_CLOUD={site} openstack reservation host set --extra authorized_projects={project} --extra restricted_reason="{restricted_reason}" {h.id}'
+                    unset_cmd = f"OS_CLOUD={site} openstack reservation host unset --extra authorized_projects --extra restricted_reason {h.id}"
+
+                    commands_by_date[start].append(set_cmd)
+                    commands_by_date[end].append(unset_cmd)
+
+                    print(f"\t\t{start} - {end}")
+
+    for date, commands in sorted(commands_by_date.items()):
+        print(date.astimezone().isoformat())
+        for cmd in commands:
+            print(f"\t{cmd}")
+
+
+def launch_main():
+    main(sys.argv[1:])
+
+
+if __name__ == "__main__":
+    launch_main()