diff --git a/cvp_checks/global_config.yaml b/cvp_checks/global_config.yaml
index 927a232..4de94ce 100644
--- a/cvp_checks/global_config.yaml
+++ b/cvp_checks/global_config.yaml
@@ -14,11 +14,18 @@
 SALT_USERNAME: <salt_usr>
 SALT_PASSWORD: <salt_pwd>
 
+# How many seconds to wait for salt-minion to respond
+salt_timeout: 1
+
 # List of nodes (full fqdn) to skip in all tests
+# Use as env variable as
+# export skipped_nodes=mtr01.local,log02.local
 # TEMPORARY: please do not comment this setting.
 skipped_nodes: [""]
 
 # List of groups (short name, e.g. dbs) to skip in group tests
+# Use as env variable as
+# export skipped_groups=mtr,log
 # TEMPORARY: please do not comment this setting.
 skipped_groups: [""]
 
@@ -33,4 +40,4 @@
 # this test may skip specific node (use fqdn)
 test_ntp_sync:
   { #"skipped_nodes": [""],
-    "time_deviation": 1}
+    "time_deviation": 5}