Merge pull request #25 from AxonIQ/11-avoid-co-location-of-the-replic…

…as-on-the-same-node Avoid co location of the replicas on the same node
AxonIQ · Aug 28, 2024 · 5a28eb4 · 5a28eb4
2 parents 528109b + 442fdd0
commit 5a28eb4
Show file tree

Hide file tree

Showing 3 changed files with 33 additions and 3 deletions.
diff --git a/README.md b/README.md
@@ -19,16 +19,16 @@
 
 ```terraform
 module "as_demo" {
-  source = "[email protected]:AxonIQ/terraform-axonserver-k8s.git?ref=v1.9"
+  source = "[email protected]:AxonIQ/terraform-axonserver-k8s.git?ref=v1.10"
   
-  axonserver_release = "2024.1.0"
+  axonserver_release = "2024.1.1"
   java_version       = "17"
 
   nodes_number  = 3
   cluster_name  = "axonserver"
   public_domain = "axoniq.net"
   namespace     = "axonserver"
-
+  
   axonserver_license_path = file("${path.module}/axoniq.license")
   axonserver_properties   = file("${path.module}/axonserver.properties")
 }
@@ -57,6 +57,7 @@ module "as_demo" {
 | <a name="input_data_storage"></a> [data\_storage](#input\_data\_storage)                                    | Data PVC storage                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | `string`                                                                                                                   | `"10Gi"`                             |    no    |
 | <a name="input_plugins_storage"></a> [plugins\_storage](#input\_plugins\_storage)                           | Plugins PVC storage                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | `string`                                                                                                                   | `"1Gi"`                              |    no    |
 | <a name="input_devmode_enabled"></a> [devmode\_enabled](#input\_devmode\_enabled)                            | Axon Server devmode                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | `bool`                                                                                                                     | `false`                              |    no    |
+| <a name="input_assign_pods_to_different_nodes"></a> [assign\_pods\_to\_different\_nodes](#input\_assign\_pods\_to\_different\_nodes)                            | Avoid the co location of the replicas on the same node                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | `bool`                                                                                                                     | `false`                              |    no    |
 
 ## Outputs
 

diff --git a/statefulset.tf b/statefulset.tf
@@ -33,6 +33,29 @@ resource "kubernetes_stateful_set" "axonserver" {
       spec {
         termination_grace_period_seconds = 120
 
+        dynamic "affinity" {
+          for_each = var.assign_pods_to_different_nodes == true ? [1] : [ ]
+          content {
+            pod_anti_affinity {
+              preferred_during_scheduling_ignored_during_execution {
+                weight = "20"
+
+                pod_affinity_term {
+                  topology_key = "kubernetes.io/hostname"
+
+                  label_selector {
+                    match_expressions {
+                      key      = "cluster"
+                      operator = "In"
+                      values   = [ var.cluster_name ]
+                    }
+                  }
+                }
+              }
+            }
+          }
+        }
+
         container {
           name              = "${var.cluster_name}-${count.index + 1}"
           image             = "axoniq/axonserver:${var.axonserver_release}-jdk-${var.java_version}"

diff --git a/variables.tf b/variables.tf
@@ -105,3 +105,9 @@ variable "devmode_enabled" {
   type        = bool
   default     = false
 }
+
+variable "assign_pods_to_different_nodes" {
+  description = "Avoid co location of the replicas on the same node"
+  type        = bool
+  default     = false
+}