updated start proto to return exception strings, updated grpc start session to exist early when a failure is found, updated coretk ui to not switch ui to running when start fails and display error dialog

daemon/core/services/coreservices.py

@@ -458,7 +458,7 @@ class CoreServices:
         """
         Start all services on a node.
 
-        :param core.netns.vnode.LxcNode node: node to start services on
+        :param core.nodes.base.CoreNode node: node to start services on
         :return: nothing
         """
         boot_paths = ServiceDependencies(node.services).boot_paths()
@@ -468,7 +468,7 @@ class CoreServices:
             funcs.append((self._start_boot_paths, args, {}))
         result, exceptions = utils.threadpool(funcs)
         if exceptions:
-            raise ServiceBootError(exceptions)
+            raise ServiceBootError(*exceptions)
 
     def _start_boot_paths(self, node, boot_path):
         """

daemon/core/services/utility.py

@@ -8,7 +8,7 @@ from core import constants, utils
 from core.errors import CoreCommandError
 from core.nodes import ipaddress
 from core.nodes.ipaddress import Ipv4Prefix, Ipv6Prefix
-from core.services.coreservices import CoreService
+from core.services.coreservices import CoreService, ServiceMode
 
 
 class UtilService(CoreService):
@@ -173,6 +173,7 @@ class SshService(UtilService):
     startup = ("sh startsshd.sh",)
     shutdown = ("killall sshd",)
     validate = ()
+    validation_mode = ServiceMode.BLOCKING
 
     @classmethod
     def generate_config(cls, node, filename):