From b0204f3c242e9df25321ff9ce7d80d89b6b0e895 Mon Sep 17 00:00:00 2001
From: "Andres D. Molins" <nesitor@gmail.com>
Date: Thu, 21 Sep 2023 11:14:45 +0200
Subject: [PATCH] Fix: Large hostname issue.

---
 vm_supervisor/vm/firecracker/instance.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/vm_supervisor/vm/firecracker/instance.py b/vm_supervisor/vm/firecracker/instance.py
index dbe9fd32a..be4f886ba 100644
--- a/vm_supervisor/vm/firecracker/instance.py
+++ b/vm_supervisor/vm/firecracker/instance.py
@@ -1,4 +1,5 @@
 import asyncio
+import base64
 import json
 import logging
 from pathlib import Path
@@ -236,9 +237,11 @@ def _create_network_file(self) -> bytes:
     def _create_metadata_file(self) -> bytes:
         """Creates metadata configuration file for cloud-init tool"""
 
+        hostname = base64.b32encode(self.vm_hash).decode().strip("=").lower()
+
         metadata = {
             "instance-id": f"iid-instance-{self.vm_id}",
-            "local-hostname": str(self.vm_hash),
+            "local-hostname": hostname,
         }
 
         return json.dumps(metadata).encode()