Merge pull request #125 from Ensono/kubelet-gc-threshold

Exposing kubelet garbage collection threshold via variables
Ensono · Jun 7, 2024 · e55e769 · e55e769
2 parents 051d482 + c0523cb
commit e55e769
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diff --git a/aws/modules/infrastructure_modules/eks/locals.tf b/aws/modules/infrastructure_modules/eks/locals.tf
@@ -32,6 +32,10 @@ locals {
   "net.ipv4.conf.default.secure_redirects" = "0"
   "net.ipv4.conf.all.log_martians" = "1"
   "net.ipv4.conf.default.log_martians" = "1"
+
+  [settings.kubernetes]
+  image-gc-high-threshold-percent = "${var.image_gc_high_threshold_percent}"
+  image-gc-low-threshold-percent = "${var.image_gc_low_threshold_percent}"
   %{endif}
   EOT
 

diff --git a/aws/modules/infrastructure_modules/eks/variables.tf b/aws/modules/infrastructure_modules/eks/variables.tf
@@ -121,8 +121,21 @@ variable "cluster_security_group_additional_rules" {
     }
   }
 }
+
 variable "trusted_role_arn" {
   description = "IAM role passed to KMS Policy"
   type        = string
   default     = ""
-}
+}
+
+variable "image_gc_high_threshold_percent" {
+  description = "The percent of disk usage that initiates image garbage collection by kubelet. This value must be greater than the low threshold value"
+  type        = number
+  default     = 85
+}
+
+variable "image_gc_low_threshold_percent" {
+  description = "The kubelet deletes images until disk usage reaches this value. This value must be less than the high threshold value"
+  type        = number
+  default     = 80
+}