1 files changed, 17 insertions, 0 deletions
diff --git a/roles/openshift_health_checker/openshift_checks/__init__.py b/roles/openshift_health_checker/openshift_checks/__init__.py
index 28cb53cc5..ce05b44a4 100644
--- a/roles/openshift_health_checker/openshift_checks/__init__.py
+++ b/roles/openshift_health_checker/openshift_checks/__init__.py
@@ -13,6 +13,7 @@ from importlib import import_module
 
 from ansible.module_utils import six
 from ansible.module_utils.six.moves import reduce  # pylint: disable=import-error,redefined-builtin
+from ansible.module_utils.six import string_types
 from ansible.plugins.filter.core import to_bool as ansible_to_bool
 
 
@@ -110,6 +111,11 @@ class OpenShiftCheck(object):
         """Returns true if this check applies to the ansible-playbook run."""
         return True
 
+    def is_first_master(self):
+        """Determine if running on first master. Returns: bool"""
+        masters = self.get_var("groups", "oo_first_master", default=None) or [None]
+        return masters[0] == self.get_var("ansible_host")
+
     @abstractmethod
     def run(self):
         """Executes a check against a host and returns a result hash similar to Ansible modules.
@@ -283,6 +289,17 @@ class OpenShiftCheck(object):
                 ))
 
     @staticmethod
+    def normalize(name_list):
+        """Return a clean list of names.
+
+        The input may be a comma-separated string or a sequence. Leading and
+        trailing whitespace characters are removed. Empty items are discarded.
+        """
+        if isinstance(name_list, string_types):
+            name_list = name_list.split(',')
+        return [name.strip() for name in name_list if name.strip()]
+
+    @staticmethod
     def get_major_minor_version(openshift_image_tag):
         """Parse and return the deployed version of OpenShift as a tuple."""
         if openshift_image_tag and openshift_image_tag[0] == 'v':