Fixing issue logging
diff --git a/xos/observers/helloworldservice/steps/sync_helloworldtenant.py b/xos/observers/helloworldservice/steps/sync_helloworldtenant.py
index 02385a5..268f204 100644
--- a/xos/observers/helloworldservice/steps/sync_helloworldtenant.py
+++ b/xos/observers/helloworldservice/steps/sync_helloworldtenant.py
@@ -20,12 +20,12 @@
 
     def sync_record(self, record):
         logger.info("Syncing helloworldtenant");
-        open('log','w').write(record.display_message + '\n');
+        open('log','a').write(record.display_message + '\n');
 	service = HelloWorldService.get_service_objects().filter(id = record.provider_service.id)[0];
 	for slice in service.slices.all():
-		open('log','w').write("got a slice" + '\n');
+		open('log','a').write("got a slice" + '\n');
 		for instance in slice.instances.all():
-            		open('log','w').write("got an instance" + '\n');
+            		open('log','a').write("got an instance" + '\n');
             		instance.userData = "packages:\n  - apache2\nruncmd:\n  - update-rc.d apache2 enable\n  - service apache2 start\nwrite_files:\n-   content: Hello %s\n    path: /var/www/html/hello.txt"%record.display_message
             		instance.save();