removed unenforced volume size config option

Author: wtripp180901

ansible/roles/kube_prometheus_stack/defaults/main/helm.yml

@@ -71,7 +71,7 @@ kube_prometheus_stack_release_defaults:
               - ReadWriteOnce
             resources:
               requests:
-                storage: "{{ prometheus_volume_size }}"
+                storage: 1Gi # not enforced but requires value > 0
       retention: "{{ prometheus_storage_retention }}"
       retentionSize: "{{ prometheus_storage_retention_size }}"
       additionalAlertRelabelConfigs: "{{ prometheus_alert_relabel_configs }}"

ansible/roles/kube_prometheus_stack/defaults/main/main.yml

@@ -45,8 +45,6 @@ prometheus_storage_retention: "30d"
 # supported: KB, MB, GB, TB, PB.
 prometheus_storage_retention_size: "40GB"
 
-prometheus_volume_size: 40Gi
-
 prometheus_alert_relabel_configs: []
 
 prometheus_global:

ansible/roles/kube_prometheus_stack/tasks/main.yml

@@ -46,7 +46,7 @@
           app.kubernetes.io/name: prometheus-dir
       spec:
         capacity:
-          storage: "{{ prometheus_volume_size }}"
+          storage: 1Gi # not enforced for hostpath volumes but requires value >0 to work
         accessModes:
         - ReadWriteOnce
         hostPath:

environments/common/inventory/group_vars/all/prometheus.yml

@@ -1,11 +1,8 @@
 # Must be within K3s' reserved port range (default 30000-32767)
 prometheus_port: 30000
 
-prometheus_image_tag: "v2.27.0"
-
 prometheus_db_dir: "{{ appliances_state_dir }}/prometheus"
 prometheus_storage_retention: "30d"
-prometheus_volume_size: 40Gi
 prometheus_storage_retention_size: "40GB"
 prometheus_scrape_configs_default:
 - job_name: "slurm_exporter"