diff --git a/aws-experiment-launch/experiment/commander/main.go b/aws-experiment-launch/experiment/commander/main.go
index 66bd97772..2a34c64e7 100644
--- a/aws-experiment-launch/experiment/commander/main.go
+++ b/aws-experiment-launch/experiment/commander/main.go
@@ -38,7 +38,6 @@ func readConfigFile() [][]string {
 	if err != nil {
 		log.Fatal("Failed to create local file", err)
 	}
-	defer out.Close()
 
 	// get remote config file
 	resp, err := http.Get(setting.configURL)
@@ -52,6 +51,7 @@ func readConfigFile() [][]string {
 	if err != nil {
 		log.Fatal("Failed to copy file")
 	}
+	out.Close()
 
 	// log config file
 	content, err := ioutil.ReadFile(configFile)
@@ -60,6 +60,7 @@ func readConfigFile() [][]string {
 	}
 	log.Println("Successfully downloaded config")
 	log.Println(string(content))
+
 	file, err := os.Open(configFile)
 	defer file.Close()
 	if err != nil {
diff --git a/aws-experiment-launch/new-pipeline/userdata-soldier.sh b/aws-experiment-launch/new-pipeline/userdata-soldier.sh
index f9b42d9bb..33873d04d 100644
--- a/aws-experiment-launch/new-pipeline/userdata-soldier.sh
+++ b/aws-experiment-launch/new-pipeline/userdata-soldier.sh
@@ -1,9 +1,9 @@
 #!/bin/bash
-yum install ruby wget -y
-cd $HOME
-wget http://unique-bucket-bin.s3.amazonaws.com/txgen
-wget http://unique-bucket-bin.s3.amazonaws.com/soldier
-wget http://unique-bucket-bin.s3.amazonaws.com/benchmark
+yum install ruby -y
+cd /home/ec2-user/
+curl http://unique-bucket-bin.s3.amazonaws.com/txgen -o txgen
+curl http://unique-bucket-bin.s3.amazonaws.com/soldier -o soldier
+curl http://unique-bucket-bin.s3.amazonaws.com/benchmark -o benchmark
 chmod +x ./soldier
 chmod +x ./txgen
 chmod +x ./benchmark
diff --git a/aws-experiment-launch/new-pipeline/utils/utils.py b/aws-experiment-launch/new-pipeline/utils/utils.py
index e227e181f..762083c43 100644
--- a/aws-experiment-launch/new-pipeline/utils/utils.py
+++ b/aws-experiment-launch/new-pipeline/utils/utils.py
@@ -136,8 +136,8 @@ def generate_distribution_config(shard_number, client_number, ip_list, distribut
         return False
 
     # Create ip for clients.
-    client_id, leader_id, validator_id, commander_id = 0, 0, 0, 0
-    validator_number = len(ip_list) - client_number - shard_number - 1
+    client_id, leader_id, validator_id = 0, 0, 0
+    validator_number = len(ip_list) - client_number - shard_number
     with open(distribution_config, "w") as fout:
         for i in range(len(ip_list)):
             ip, node_name_tag = ip_list[i].split(" ")
diff --git a/aws-experiment-launch/utils/utils.py b/aws-experiment-launch/utils/utils.py
index 106474fc1..1236ddb7c 100644
--- a/aws-experiment-launch/utils/utils.py
+++ b/aws-experiment-launch/utils/utils.py
@@ -136,15 +136,12 @@ def generate_distribution_config(shard_number, client_number, ip_list, distribut
         return False
 
     # Create ip for clients.
-    client_id, leader_id, validator_id, commander_id = 0, 0, 0, 0
-    validator_number = len(ip_list) - client_number - shard_number - 1
+    client_id, leader_id, validator_id= 0, 0, 0
+    validator_number = len(ip_list) - client_number - shard_number
     with open(distribution_config, "w") as fout:
         for i in range(len(ip_list)):
             ip, node_name_tag = ip_list[i].split(" ")
-            if commander_id < 1:
-                fout.write("%s 9000 commander %d %s\n" % (ip, commander_id % shard_number, node_name_tag))
-                commander_id = commander_id + 1
-            elif leader_id < shard_number:
+            if leader_id < shard_number:
                 fout.write("%s 9000 leader %d %s\n" % (ip, leader_id, node_name_tag))
                 leader_id = leader_id + 1
             elif validator_id < validator_number: