feat: Add support for EKS managed node group `update_config.update_st…

…rategy` (#3626)
SCT-Engineering · Jan 13, 2026 · 617dba6 · 617dba6
1 parent d416579
commit 617dba6
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Showing 5 changed files with 5 additions and 2 deletions.
diff --git a/README.md b/README.md
diff --git a/modules/eks-managed-node-group/README.md b/modules/eks-managed-node-group/README.md
@@ -190,7 +190,7 @@ module "eks_managed_node_group" {
 | <a name="input_tags"></a> [tags](#input\_tags) | A map of tags to add to all resources | `map(string)` | `{}` | no |
 | <a name="input_taints"></a> [taints](#input\_taints) | The Kubernetes taints to be applied to the nodes in the node group. Maximum of 50 taints per node group | <pre>map(object({<br/>    key    = string<br/>    value  = optional(string)<br/>    effect = string<br/>  }))</pre> | `null` | no |
 | <a name="input_timeouts"></a> [timeouts](#input\_timeouts) | Create, update, and delete timeout configurations for the node group | <pre>object({<br/>    create = optional(string)<br/>    update = optional(string)<br/>    delete = optional(string)<br/>  })</pre> | `null` | no |
-| <a name="input_update_config"></a> [update\_config](#input\_update\_config) | Configuration block of settings for max unavailable resources during node group updates | <pre>object({<br/>    max_unavailable            = optional(number)<br/>    max_unavailable_percentage = optional(number)<br/>  })</pre> | <pre>{<br/>  "max_unavailable_percentage": 33<br/>}</pre> | no |
+| <a name="input_update_config"></a> [update\_config](#input\_update\_config) | Configuration block of settings for max unavailable resources during node group updates | <pre>object({<br/>    max_unavailable            = optional(number)<br/>    max_unavailable_percentage = optional(number)<br/>    update_strategy            = optional(string)<br/>  })</pre> | <pre>{<br/>  "max_unavailable_percentage": 33<br/>}</pre> | no |
 | <a name="input_update_launch_template_default_version"></a> [update\_launch\_template\_default\_version](#input\_update\_launch\_template\_default\_version) | Whether to update the launch templates default version on each update. Conflicts with `launch_template_default_version` | `bool` | `true` | no |
 | <a name="input_use_custom_launch_template"></a> [use\_custom\_launch\_template](#input\_use\_custom\_launch\_template) | Determines whether to use a custom launch template or not. If set to `false`, EKS will use its own default launch template | `bool` | `true` | no |
 | <a name="input_use_latest_ami_release_version"></a> [use\_latest\_ami\_release\_version](#input\_use\_latest\_ami\_release\_version) | Determines whether to use the latest AMI release version for the given `ami_type` (except for `CUSTOM`). Note: `ami_type` and `kubernetes_version` must be supplied in order to enable this feature | `bool` | `true` | no |

diff --git a/modules/eks-managed-node-group/main.tf b/modules/eks-managed-node-group/main.tf
@@ -510,6 +510,7 @@ resource "aws_eks_node_group" "this" {
     content {
       max_unavailable_percentage = update_config.value.max_unavailable_percentage
       max_unavailable            = update_config.value.max_unavailable
+      update_strategy            = update_config.value.update_strategy
     }
   }
 

diff --git a/modules/eks-managed-node-group/variables.tf b/modules/eks-managed-node-group/variables.tf
@@ -565,6 +565,7 @@ variable "update_config" {
   type = object({
     max_unavailable            = optional(number)
     max_unavailable_percentage = optional(number)
+    update_strategy            = optional(string)
   })
   default = {
     max_unavailable_percentage = 33

diff --git a/variables.tf b/variables.tf
@@ -1276,6 +1276,7 @@ variable "eks_managed_node_groups" {
     update_config = optional(object({
       max_unavailable            = optional(number)
       max_unavailable_percentage = optional(number)
+      update_strategy            = optional(string)
     }))
     timeouts = optional(object({
       create = optional(string)