From 94033d396a888cf130ed2919ddc72a132e2a52e1 Mon Sep 17 00:00:00 2001
From: Nikita Meschanenko <nikitameshanenko@gmail.com>
Date: Thu, 2 Sep 2021 16:12:31 +0300
Subject: [PATCH 1/3] feat: Add ability to tag network-interface using Launch
 Template

---
 modules/node_groups/launch_template.tf | 14 ++++++++++++++
 workers_launch_template.tf             | 18 ++++++++++++++++++
 2 files changed, 32 insertions(+)

diff --git a/modules/node_groups/launch_template.tf b/modules/node_groups/launch_template.tf
index f70d2f5838..7fc1e5f95c 100644
--- a/modules/node_groups/launch_template.tf
+++ b/modules/node_groups/launch_template.tf
@@ -103,6 +103,20 @@ resource "aws_launch_template" "workers" {
     )
   }
 
+  # Supplying custom tags to EKS instances ENI's is another use-case for LaunchTemplates
+  tag_specifications {
+    resource_type = "network-interface"
+
+    tags = merge(
+    var.tags,
+    {
+      Name = local.node_groups_names[each.key]
+    },
+    lookup(var.node_groups_defaults, "additional_tags", {}),
+    lookup(var.node_groups[each.key], "additional_tags", {})
+    )
+  }
+
   # Tag the LT itself
   tags = merge(
     var.tags,
diff --git a/workers_launch_template.tf b/workers_launch_template.tf
index d1d48186c0..62ded7caef 100644
--- a/workers_launch_template.tf
+++ b/workers_launch_template.tf
@@ -573,6 +573,24 @@ resource "aws_launch_template" "workers_launch_template" {
     )
   }
 
+  tag_specifications {
+    resource_type = "network-interface"
+
+    tags = merge(
+      {
+        "Name" = "${coalescelist(aws_eks_cluster.this[*].name, [""])[0]}-${lookup(
+          var.worker_groups_launch_template[count.index],
+          "name",
+          count.index,
+        )}-eks_asg"
+      },
+      { for tag_key, tag_value in var.tags :
+        tag_key => tag_value
+        if tag_key != "Name" && !contains([for tag in lookup(var.worker_groups_launch_template[count.index], "tags", local.workers_group_defaults["tags"]) : tag["key"]], tag_key)
+      }
+    )
+  }
+
   tags = var.tags
 
   lifecycle {

From 7c4082887b6f46390210fe2215c70d90e4cb79ed Mon Sep 17 00:00:00 2001
From: Nikita Meschanenko <nikitameshanenko@gmail.com>
Date: Thu, 2 Sep 2021 20:28:57 +0300
Subject: [PATCH 2/3] feat: Update launch template with managed node group
 example

---
 .../launchtemplate.tf                                    | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/examples/launch_templates_with_managed_node_groups/launchtemplate.tf b/examples/launch_templates_with_managed_node_groups/launchtemplate.tf
index e66bad1a9f..2494a7a688 100644
--- a/examples/launch_templates_with_managed_node_groups/launchtemplate.tf
+++ b/examples/launch_templates_with_managed_node_groups/launchtemplate.tf
@@ -80,6 +80,15 @@ resource "aws_launch_template" "default" {
     }
   }
 
+  # Supplying custom tags to EKS instances ENI's is another use-case for LaunchTemplates
+  tag_specifications {
+    resource_type = "network-interface"
+
+    tags = {
+      CustomTag = "EKS example"
+    }
+  }
+
   # Tag the LT itself
   tags = {
     CustomTag = "EKS example"

From 4fab42f22a94ea2d3926c8d41094d5b251ef5729 Mon Sep 17 00:00:00 2001
From: Nikita Meschanenko <nikitameshanenko@gmail.com>
Date: Sun, 5 Sep 2021 15:27:34 +0300
Subject: [PATCH 3/3] feat: add proper tags to ENIs in worker group launch
 template

---
 modules/node_groups/launch_template.tf | 12 ++++++------
 workers_launch_template.tf             |  8 +++++---
 2 files changed, 11 insertions(+), 9 deletions(-)

diff --git a/modules/node_groups/launch_template.tf b/modules/node_groups/launch_template.tf
index 7fc1e5f95c..40bcf17713 100644
--- a/modules/node_groups/launch_template.tf
+++ b/modules/node_groups/launch_template.tf
@@ -108,12 +108,12 @@ resource "aws_launch_template" "workers" {
     resource_type = "network-interface"
 
     tags = merge(
-    var.tags,
-    {
-      Name = local.node_groups_names[each.key]
-    },
-    lookup(var.node_groups_defaults, "additional_tags", {}),
-    lookup(var.node_groups[each.key], "additional_tags", {})
+      var.tags,
+      {
+        Name = local.node_groups_names[each.key]
+      },
+      lookup(var.node_groups_defaults, "additional_tags", {}),
+      lookup(var.node_groups[each.key], "additional_tags", {})
     )
   }
 
diff --git a/workers_launch_template.tf b/workers_launch_template.tf
index 62ded7caef..9da5a16d04 100644
--- a/workers_launch_template.tf
+++ b/workers_launch_template.tf
@@ -584,9 +584,11 @@ resource "aws_launch_template" "workers_launch_template" {
           count.index,
         )}-eks_asg"
       },
-      { for tag_key, tag_value in var.tags :
-        tag_key => tag_value
-        if tag_key != "Name" && !contains([for tag in lookup(var.worker_groups_launch_template[count.index], "tags", local.workers_group_defaults["tags"]) : tag["key"]], tag_key)
+      var.tags,
+      {
+        for tag in lookup(var.worker_groups_launch_template[count.index], "tags", local.workers_group_defaults["tags"]) :
+        tag["key"] => tag["value"]
+        if tag["key"] != "Name" && tag["propagate_at_launch"]
       }
     )
   }