* Added, as fallback "hostnamectl set-hostname" for actor renamers for linux

* Upgraded OpenNebula service to better check hostname
* added versatile hostname validator for hostnames
* Fixed sample settings.py

actor/src/udsactor/linux/renamer/debian.py

@@ -45,7 +45,8 @@ def rename(newName: str) -> bool:
         hostname.write(newName)
 
     # Force system new name
-    os.system('/bin/hostname %s' % newName)
+    os.system('/bin/hostname {}'.format(newName))
+    os.system('/usr/bin/hostnamectl set-hostname {}'.format(newName))
 
     # add name to "hosts"
     with open('/etc/hosts', 'r') as hosts:

actor/src/udsactor/linux/renamer/opensuse.py

@@ -46,7 +46,8 @@ def rename(newName: str) -> bool:
         hostname.write(newName)
 
     # Force system new name
-    os.system('/bin/hostname %s' % newName)
+    os.system('/bin/hostname {}'.format(newName))
+    os.system('/usr/bin/hostnamectl set-hostname {}'.format(newName))
 
     # add name to "hosts"
     with open('/etc/hosts', 'r') as hosts:

actor/src/udsactor/linux/renamer/redhat.py

@@ -46,7 +46,8 @@ def rename(newName: str) -> bool:
         hostname.write(newName)
 
     # Force system new name
-    os.system('/bin/hostname %s' % newName)
+    os.system('/bin/hostname {}'.format(newName))
+    os.system('/usr/bin/hostnamectl set-hostname {}'.format(newName))
 
     # add name to "hosts"
     with open('/etc/hosts', 'r') as hosts:

server/src/server/settings.py.sample

@@ -19,9 +19,10 @@ DATABASES = {
     'default': {
         'ENGINE': 'django.db.backends.mysql',  # Add 'postgresql_psycopg2', 'postgresql', 'mysql', 'sqlite3' or 'oracle'.
         'OPTIONS': {
-            'init_command': 'SET default_storage_engine=INNODB; SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED;',
+            # 'init_command': 'SET default_storage_engine=INNODB; SET SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED;',
             # 'init_command': 'SET storage_engine=INNODB, SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED',
             # 'init_command': 'SET storage_engine=MYISAM, SESSION TRANSACTION ISOLATION LEVEL READ COMMITTED',
+            'isolation_level': 'read committed',
         },
         'NAME': 'dbuds',  # Or path to database file if using sqlite3.
         'USER': 'dbuds',  # Not used with sqlite3.

server/src/uds/core/util/validators.py

@@ -76,6 +76,23 @@ def validateNumeric(
 
     return numericStr
 
+def validateHostname(hostname: str, maxLength: int, asPattern: bool) -> str:
+    if len(hostname) > maxLength:
+        raise Module.ValidationException(_('{} exceeds maximum host name length.').format(hostname))
+
+    if hostname[-1] == ".":
+        hostname = hostname[:-1] # strip exactly one dot from the right, if present
+
+    if asPattern:
+        allowed = re.compile("(?!-)[A-Z\d-]{1,63}$", re.IGNORECASE)
+    else:
+        allowed = re.compile("(?!-)[A-Z\d-]{1,63}(?<!-)$", re.IGNORECASE)
+
+    if not all(allowed.match(x) for x in hostname.split(".")):
+        raise Module.ValidationException(_('{} is not a valid hostname').format(hostname))
+
+    return hostname
+
 
 def validatePort(portStr: str) -> int:
     """

server/src/uds/services/OpenNebula/service.py

@@ -36,7 +36,7 @@ import typing
 from django.utils.translation import ugettext_noop as _
 from uds.core.transports import protocols
 from uds.core.services import Service, types as serviceTypes
-from uds.core.util import tools
+from uds.core.util import validators
 from uds.core.ui import gui
 
 from .publication import LivePublication
@@ -140,8 +140,10 @@ class LiveService(Service):
         Note that we check them throught FROM variables, that already has been
         initialized by __init__ method of base class, before invoking this.
         """
-        if values:
-            tools.checkValidBasename(self.baseName.value, self.lenName.num())
+        if not values:
+            return
+
+        self.baseName.value = validators.validateHostname(self.baseName.value, maxLength=15-self.lenName.num(), asPattern=True)
 
     def parent(self) -> 'OpenNebulaProvider':
         return typing.cast('OpenNebulaProvider', super().parent())