10Gi to 2Gi loki and prometheus pvcs

Author: dbarkowsky

deployments/openshift/config/dev.env.example

@@ -144,8 +144,8 @@ GRAFANA_ADMIN_PASSWORD=admin
 # Loki log retention period in days.
 LOKI_RETENTION_DAYS=30
 # Loki PVC storage size.
-LOKI_PVC_SIZE=10Gi
+LOKI_PVC_SIZE=2Gi
 # Prometheus PVC storage size.
-PROMETHEUS_PVC_SIZE=10Gi
+PROMETHEUS_PVC_SIZE=2Gi
 # Prometheus scrape interval for all targets.
 METRICS_SCRAPE_INTERVAL=15s

deployments/openshift/config/prod.env.example

@@ -131,8 +131,8 @@ GRAFANA_ADMIN_PASSWORD=change-me-in-production
 # Loki log retention period in days.
 LOKI_RETENTION_DAYS=30
 # Loki PVC storage size.
-LOKI_PVC_SIZE=10Gi
+LOKI_PVC_SIZE=2Gi
 # Prometheus PVC storage size.
-PROMETHEUS_PVC_SIZE=10Gi
+PROMETHEUS_PVC_SIZE=2Gi
 # Prometheus scrape interval for all targets.
 METRICS_SCRAPE_INTERVAL=15s

deployments/openshift/helm/plg/values-openshift.yaml

@@ -1,7 +1,7 @@
 # PLG Stack - OpenShift Environment Overrides
 
 loki:
-  pvcSize: 10Gi
+  pvcSize: 2Gi
   retentionDays: 30
 
   resources:
@@ -13,7 +13,7 @@ loki:
       cpu: "500m"
 
 prometheus:
-  pvcSize: 10Gi
+  pvcSize: 2Gi
 
   resources:
     requests:

deployments/openshift/helm/plg/values.yaml

@@ -11,7 +11,7 @@ loki:
   retentionDays: 30
 
   # PVC size for Loki data storage.
-  pvcSize: 10Gi
+  pvcSize: 2Gi
 
   # Storage class for the PVC. Empty string uses the cluster default.
   storageClassName: ""
@@ -52,7 +52,7 @@ prometheus:
   retentionDays: 15
 
   # PVC size for Prometheus TSDB storage.
-  pvcSize: 10Gi
+  pvcSize: 2Gi
 
   # Storage class for the PVC. Empty string uses the cluster default.
   storageClassName: ""

docs-md/monitoring/LOKI_HELM_CHART.md

@@ -26,7 +26,7 @@ deployments/openshift/helm/plg/
 | `loki.image.repository` | Loki container image | `grafana/loki` |
 | `loki.image.tag` | Loki image tag | `3.4.0` |
 | `loki.retentionDays` | Log retention period in days | `30` |
-| `loki.pvcSize` | PVC storage size | `10Gi` |
+| `loki.pvcSize` | PVC storage size | `2Gi` |
 | `loki.storageClassName` | Storage class (empty = cluster default) | `""` |
 | `loki.resources.requests.memory` | Memory request | `256Mi` (OpenShift override: `512Mi`) |
 | `loki.resources.requests.cpu` | CPU request | `500m` |

docs-md/monitoring/PLG_DEPLOYMENT_INTEGRATION.md

@@ -52,8 +52,8 @@ PLG-specific variables are configured in the same environment profile files used
 |----------|---------|-------------|
 | `GRAFANA_ADMIN_PASSWORD` | `admin` | Grafana admin login password |
 | `LOKI_RETENTION_DAYS` | `30` | Log retention period in days |
-| `LOKI_PVC_SIZE` | `10Gi` | Persistent volume size for Loki data |
-| `PROMETHEUS_PVC_SIZE` | `10Gi` | Persistent volume size for Prometheus TSDB |
+| `LOKI_PVC_SIZE` | `2Gi` | Persistent volume size for Loki data |
+| `PROMETHEUS_PVC_SIZE` | `2Gi` | Persistent volume size for Prometheus TSDB |
 | `METRICS_SCRAPE_INTERVAL` | `15s` | How often Prometheus scrapes targets |
 | `ALERTMANAGER_NOTIFICATION_CHANNEL` | `ches` | Active notification channel: `ches` or `teams` |
 | `ALERTMANAGER_NOTIFICATIONS_ENABLED` | `false` | Whether Alertmanager routes alerts externally |

docs-md/monitoring/PROMETHEUS_HELM_CHART.md

@@ -31,7 +31,7 @@ deployments/openshift/helm/plg/
 | `prometheus.image.repository` | Prometheus container image | `prom/prometheus` |
 | `prometheus.image.tag` | Prometheus image tag | `v3.2.1` |
 | `prometheus.retentionDays` | TSDB data retention period in days | `15` |
-| `prometheus.pvcSize` | PVC storage size | `10Gi` |
+| `prometheus.pvcSize` | PVC storage size | `2Gi` |
 | `prometheus.storageClassName` | Storage class (empty = cluster default) | `""` |
 | `prometheus.scrapeInterval` | Scrape interval for all targets | `15s` |
 | `prometheus.resources.requests.memory` | Memory request | `512Mi` |

docs-md/operations/ENVIRONMENT_CONFIGURATION.md

@@ -200,8 +200,8 @@ See [LOAD_TESTING.md](../benchmarking/LOAD_TESTING.md) for load-test usage of `m
 |----------|---------|-------------|
 | `GRAFANA_ADMIN_PASSWORD` | `admin` | Grafana admin login password |
 | `LOKI_RETENTION_DAYS` | `30` | Log retention period in days |
-| `LOKI_PVC_SIZE` | `10Gi` | Persistent volume size for Loki data |
-| `PROMETHEUS_PVC_SIZE` | `10Gi` | Persistent volume size for Prometheus TSDB |
+| `LOKI_PVC_SIZE` | `2Gi` | Persistent volume size for Loki data |
+| `PROMETHEUS_PVC_SIZE` | `2Gi` | Persistent volume size for Prometheus TSDB |
 | `METRICS_SCRAPE_INTERVAL` | `15s` | How often Prometheus scrapes targets |
 
 ## How Secrets Reach the Pods

feature-docs/20260315052727-plg-monitoring-stack/REQUIREMENTS.md

@@ -204,8 +204,8 @@ New environment variables (configurable per environment):
 |----------|-------------|---------|
 | `GRAFANA_ADMIN_PASSWORD` | Grafana admin password | (secret) |
 | `LOKI_RETENTION_DAYS` | Log retention period in days | `30` |
-| `LOKI_PVC_SIZE` | Loki storage PVC size | `10Gi` |
-| `PROMETHEUS_PVC_SIZE` | Prometheus storage PVC size | `10Gi` |
+| `LOKI_PVC_SIZE` | Loki storage PVC size | `2Gi` |
+| `PROMETHEUS_PVC_SIZE` | Prometheus storage PVC size | `2Gi` |
 | `METRICS_SCRAPE_INTERVAL` | Prometheus scrape interval | `15s` |
 
 ---

feature-docs/20260315052727-plg-monitoring-stack/user_stories/US-006-helm-chart-prometheus.md

@@ -9,7 +9,7 @@
 - [x] **Scenario 1**: Prometheus deployed via Helm chart
     - **Given** the PLG Helm chart includes Prometheus configuration
     - **When** the chart is deployed
-    - **Then** Prometheus is running with a PVC for metrics storage (configurable via `PROMETHEUS_PVC_SIZE`, default `10Gi`) and resource limits (memory `512Mi`, CPU `500m`)
+    - **Then** Prometheus is running with a PVC for metrics storage (configurable via `PROMETHEUS_PVC_SIZE`, default `2Gi`) and resource limits (memory `512Mi`, CPU `500m`)
 
 - [x] **Scenario 2**: Backend-services scrape target configured
     - **Given** Prometheus scrape configs are defined in the Helm chart values