[codex] Add OpenShift native Observe dashboards

[jsachs-redislabs]

Summary

• Add native OpenShift Observe dashboard manifests for Redis Enterprise using legacy dashboard ConfigMaps.
• Add ServiceMonitor and PrometheusRule manifests for in-cluster Redis Enterprise metrics and alerts.
• Add customer-facing deployment docs and a runbook for an OpenShift cluster where Redis Enterprise is already installed and working.

Dashboard Scope

• Basic dashboards: Cluster Status, Database Status, Node, Shard, Active-Active, Synchronization.
• Ops dashboards: Cluster, Database, Node, Shard, Latency, Active-Active Lag, RediSearch QPS.

Live OpenShift Validation

Tested with the authenticated oc context against a cluster containing two active-active Redis Enterprise clusters in ns-a and ns-b.

• Enabled user workload monitoring with enableUserWorkload: true.
• Labeled Redis Enterprise metrics services in ns-a and ns-b with redis.io/observe=metrics.
• Applied ServiceMonitor and PrometheusRule resources in both Redis Enterprise namespaces.
• Applied all 13 dashboard ConfigMaps in openshift-config-managed.
• Verified Thanos returned Redis Enterprise data for both namespaces:
  • count(redis_server_up{namespace="ns-a"}) == 4
  • count(redis_server_up{namespace="ns-b"}) == 4
  • sum(endpoint_client_connections{namespace="ns-a"}) == 14
  • sum(endpoint_client_connections{namespace="ns-b"}) == 14
  • count(node_metrics_up{namespace="ns-a"}) == 3
  • count(node_metrics_up{namespace="ns-b"}) == 3
• Confirmed Thanos Ruler loaded the Redis Enterprise rule files. Existing Redis alert expression warnings about counter naming were informational and did not block rule loading.

Static Checks

• git diff --cached --check
• Dashboard embedded JSON validation with yq and jq
• oc kustomize openshift/native-observe
• npm run docs

Notes

• promtool was not installed locally, so rule validation was covered by OpenShift server-side deployment and Thanos Ruler loading.
• Unsupported Grafana-only panel features are intentionally omitted from the native OpenShift dashboards.

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Note

Medium Risk
Adds OpenShift ServiceMonitor/PrometheusRule and legacy dashboard ConfigMap manifests that, if applied, affect cluster monitoring/alerting behavior and scrape configuration. Changes are additive but touch operational observability resources in production clusters.

Overview
Adds OpenShift-native observability support for Redis Enterprise via legacy Observe dashboard ConfigMap manifests (Basic and Ops dashboard sets) and a kustomization.yaml bundle to apply them together.

Introduces OpenShift user-workload monitoring integration manifests: a ServiceMonitor for scraping Redis Enterprise metrics over HTTPS (/v2, insecureSkipVerify: true) and a PrometheusRule exposing Redis Enterprise alert rules to OpenShift Observe.

Updates documentation to include an OpenShift Native Observe Dashboards install guide plus an OpenShift native-observe README and an active-active runbook, and links the new platform/guide from the top-level README.md and Antora nav.

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