create-cluster script tailall option.

utils/create-cluster/create-cluster

@@ -71,6 +71,12 @@ then
     exit 0
 fi
 
+if [ "$1" == "tailall" ]
+then
+    tail -f *.log
+    exit 0
+fi
+
 if [ "$1" == "call" ]
 then
     while [ $((PORT < ENDPORT)) != "0" ]; do
@@ -101,5 +107,6 @@ echo "create      -- Create a cluster using redis-cli --cluster create."
 echo "stop        -- Stop Redis Cluster instances."
 echo "watch       -- Show CLUSTER NODES output (first 30 lines) of first node."
 echo "tail <id>   -- Run tail -f of instance at base port + ID."
+echo "tailall     -- Run tail -f for all the log files at once."
 echo "clean       -- Remove all instances data, logs, configs."
 echo "clean-logs  -- Remove just instances logs."