diff --git a/machmeter/src/main/java/com/google/cloud/machmeter/model/GKEConfig.java b/machmeter/src/main/java/com/google/cloud/machmeter/model/GKEConfig.java
index 4759deb..14d8c43 100644
--- a/machmeter/src/main/java/com/google/cloud/machmeter/model/GKEConfig.java
+++ b/machmeter/src/main/java/com/google/cloud/machmeter/model/GKEConfig.java
@@ -21,6 +21,11 @@
 
 public class GKEConfig {
 
+  private static final String DEFAULT_JVM_ARGS = "-Xms1g -Xmx1g";
+  private static final int DEFAULT_SLAVE_REPLICA_COUNT = 2;
+  private static final String DEFAULT_CPU_REQUEST = "1000m";
+  private static final String DEFAULT_MEMORY_REQUEST = "1Gi";
+
   @SerializedName(value = "cluster_name", alternate = "clusterName")
   @Expose
   private String clusterName;
@@ -61,6 +66,34 @@ public class GKEConfig {
   @Expose
   private String nodeLocations;
 
+  @SerializedName(value = "master_jvm_args", alternate = "masterJvmArgs")
+  @Expose
+  private String masterJvmArgs;
+
+  @SerializedName(value = "slave_jvm_args", alternate = "slaveJvmArgs")
+  @Expose
+  private String slaveJvmArgs;
+
+  @SerializedName(value = "master_cpu_request", alternate = "masterCPURequest")
+  @Expose
+  private String masterCPURequest;
+
+  @SerializedName(value = "master_memory_request", alternate = "masterMemoryRequest")
+  @Expose
+  private String masterMemoryRequest;
+
+  @SerializedName(value = "slave_cpu_request", alternate = "slaveCPURequest")
+  @Expose
+  private String slaveCPURequest;
+
+  @SerializedName(value = "slave_memory_request", alternate = "slaveMemoryRequest")
+  @Expose
+  private String slaveMemoryRequest;
+
+  @SerializedName(value = "slave_replica_count", alternate = "slaveReplicaCount")
+  @Expose
+  private int slaveReplicaCount;
+
   @SerializedName(value = "min_count", alternate = "minCount")
   @Expose
   private int minCount;
@@ -153,6 +186,109 @@ public void setNodeLocations(String nodeLocations) {
     this.nodeLocations = nodeLocations;
   }
 
+  public String getMasterJvmArgs() {
+    if (masterJvmArgs == null) masterJvmArgs = DEFAULT_JVM_ARGS;
+    ;
+    return masterJvmArgs;
+  }
+
+  public void setMasterJvmArgs(String masterJvmArgs) {
+    if (masterJvmArgs == null) {
+      this.masterJvmArgs = DEFAULT_JVM_ARGS;
+      return;
+    }
+    this.masterJvmArgs = masterJvmArgs;
+  }
+
+  public String getSlaveJvmArgs() {
+    if (slaveJvmArgs == null) slaveJvmArgs = DEFAULT_JVM_ARGS;
+    ;
+    return slaveJvmArgs;
+  }
+
+  public void setSlaveJvmArgs(String slaveJvmArgs) {
+    if (slaveJvmArgs == null) {
+      this.slaveJvmArgs = DEFAULT_JVM_ARGS;
+      return;
+    }
+    this.slaveJvmArgs = slaveJvmArgs;
+  }
+
+  public String getMasterCPURequest() {
+    if (masterCPURequest == null) masterCPURequest = DEFAULT_CPU_REQUEST;
+    ;
+    return masterCPURequest;
+  }
+
+  public void setMasterCPURequest(String masterCPURequest) {
+    if (masterCPURequest == null) {
+      this.masterCPURequest = DEFAULT_CPU_REQUEST;
+      return;
+    }
+    ;
+    this.masterCPURequest = masterCPURequest;
+  }
+
+  public String getMasterMemoryRequest() {
+    if (masterMemoryRequest == null) masterMemoryRequest = DEFAULT_MEMORY_REQUEST;
+    ;
+    return masterMemoryRequest;
+  }
+
+  public void setMasterMemoryRequest(String masterMemoryRequest) {
+    if (masterMemoryRequest == null) {
+      this.masterMemoryRequest = DEFAULT_MEMORY_REQUEST;
+      return;
+    }
+    ;
+    this.masterMemoryRequest = masterMemoryRequest;
+  }
+
+  public String getSlaveCPURequest() {
+    if (slaveCPURequest == null) slaveCPURequest = DEFAULT_MEMORY_REQUEST;
+    ;
+    return slaveCPURequest;
+  }
+
+  public void setSlaveCPURequest(String slaveCPURequest) {
+    if (slaveCPURequest == null) {
+      this.slaveCPURequest = DEFAULT_CPU_REQUEST;
+      return;
+    }
+    ;
+    this.slaveCPURequest = slaveCPURequest;
+  }
+
+  public String getSlaveMemoryRequest() {
+    if (slaveMemoryRequest == null) slaveMemoryRequest = DEFAULT_MEMORY_REQUEST;
+    ;
+    return slaveMemoryRequest;
+  }
+
+  public void setSlaveMemoryRequest(String slaveMemoryRequest) {
+    if (slaveMemoryRequest == null) {
+      this.slaveMemoryRequest = DEFAULT_MEMORY_REQUEST;
+      return;
+    }
+    ;
+    this.slaveMemoryRequest = slaveMemoryRequest;
+  }
+
+  public int getSlaveReplicaCount() {
+    if (slaveReplicaCount <= 0) slaveReplicaCount = DEFAULT_SLAVE_REPLICA_COUNT;
+    ;
+    return slaveReplicaCount;
+  }
+
+  public void setSlaveReplicaCount(int slaveReplicaCount) {
+    if (slaveReplicaCount <= 0) {
+      this.slaveReplicaCount = DEFAULT_SLAVE_REPLICA_COUNT;
+      return;
+    }
+    ;
+    this.slaveReplicaCount = slaveReplicaCount;
+  }
+
   public int getMinCount() {
     return minCount;
   }
diff --git a/machmeter/src/main/resources/terraform/main.tf b/machmeter/src/main/resources/terraform/main.tf
index a31ef37..8c00396 100644
--- a/machmeter/src/main/resources/terraform/main.tf
+++ b/machmeter/src/main/resources/terraform/main.tf
@@ -28,6 +28,13 @@ variable "gke_config" {
     service_account_json    = string
     machine_type            = string
     node_locations          = string
+    master_jvm_args         = string
+    slave_jvm_args          = string
+    master_cpu_request      = string
+    master_memory_request   = string
+    slave_cpu_request       = string
+    slave_memory_request    = string
+    slave_replica_count     = number
     min_count               = number
     max_count               = number
     initial_node_count      = number
@@ -118,7 +125,7 @@ module "gke" {
   ip_range_pods          = var.gke_config.ip_range_pods_name
   ip_range_services      = var.gke_config.ip_range_services_name
   grant_registry_access    = true
-  remove_default_node_pool = false
+  remove_default_node_pool = true
   create_service_account   = false
   node_pools = [
     {
@@ -299,10 +306,20 @@ resource "kubernetes_deployment" "jmeter-master" {
           port {
             container_port = 60000
           }
+          resources {
+            requests = {
+              cpu    = var.gke_config.master_cpu_request
+              memory = var.gke_config.master_memory_request
+            }
+          }
           env {
             name = "GOOGLE_APPLICATION_CREDENTIALS"
             value = "/var/secrets/google/key.json"
           }
+          env {
+            name = "JVM_ARGS"
+            value: var.gke_config.master_jvm_args
+          }
         }
         volume {
           name = "loadtest"
@@ -336,7 +353,7 @@ resource "kubernetes_stateful_set" "jmeter-slave" {
   }
   spec {
     service_name = "jmeter-slaves"
-    replicas = 2
+    replicas = var.gke_config.slave_replica_count
     selector {
       match_labels = {
         jmeter_mode = "slave"
@@ -368,18 +385,19 @@ resource "kubernetes_stateful_set" "jmeter-slave" {
             container_port = 50000
           }
           resources {
-            limits = {
-              cpu    = "1000m"
-              memory = "2Gi"
-            }
             requests = {
-              cpu    = "1000m"
-              memory = "2Gi"
+              cpu    = var.gke_config.slave_cpu_request
+              memory = var.gke_config.slave_memory_request
             }
           }
           env {
             name = "GOOGLE_APPLICATION_CREDENTIALS"
             value = "/var/secrets/google/key.json"
+
+          }
+          env {
+            name = "JVM_ARGS"
+            value: var.gke_config.slave_jvm_args
           }
         }
         volume {