Calculate max pods

cluster_connect.sh.tpl

@@ -1,3 +1,21 @@
+# Determine instance type
+INSTANCE_TYPE=$(TOKEN=`curl -X PUT "http://169.254.169.254/latest/api/token" -H "X-aws-ec2-metadata-token-ttl-seconds: 21600"` \
+&& curl -H "X-aws-ec2-metadata-token: $TOKEN" http://169.254.169.254/latest/meta-data/instance-type)
+
+# Calculate max pods
+if [[ "${use_max_pods}" = "false" ]]; then
+  KUBELET_CONFIG=/etc/kubernetes/kubelet/kubelet-config.json
+  set +o pipefail
+  CNI_VERSION=$(echo "${cni_version}" | sed 's/^v//')
+  MAX_PODS=$(/etc/eks/max-pods-calculator.sh --instance-type $INSTANCE_TYPE --cni-version $CNI_VERSION --cni-custom-networking-enabled)
+  set -o pipefail
+  if [[ -n "$MAX_PODS" ]]; then
+    echo "$(jq ".maxPods=$MAX_PODS" $KUBELET_CONFIG)" > $KUBELET_CONFIG
+  else
+    echo "Not able to determine maxPods for $INSTANCE_TYPE. Not setting max pods for kubelet"
+  fi
+fi
+
 /etc/eks/bootstrap.sh ${cluster_name} \
   --use-max-pods ${use_max_pods} \
   --kubelet-extra-args '--node-labels=${node_labels} --register-with-taints=${node_taints} ${kubelet_extra_args}' \

node_group_advanced.tf

@@ -121,6 +121,7 @@ resource "aws_launch_template" "quortex_launch_tpl" {
               : "${k}=${v}"]
             )
             use_max_pods = var.node_use_max_pods
+            cni_version  = try(var.cluster_addons["vpc-cni"].version, "")
           }
         )
       }