update all nodes motd with nodes that need restarted from patch updates - https://github.com/Security-Onion-Solutions/securityonion-saltstack/issues/112

salt/_modules/needs_restarting.py

@@ -0,0 +1,25 @@
+from os import path
+import subprocess
+
+def check():
+
+  os = __grains__['os']
+  cmd = 'needs-restarting -r > /dev/null 2>&1'
+
+  if os == 'Ubuntu':
+    if path.exists('/var/run/reboot-required'):
+      retval = 'True'
+    else:
+      retval = 'False'
+
+  elif os == 'CentOS':
+    try:
+      needs_restarting = subprocess.check_call(cmd.split(), shell=True)
+    except subprocess.CalledProcessError:
+      retval = 'True'
+    retval = 'False'
+
+  else:
+    retval = 'Unsupported OS: %s' % os
+
+  return retval