chore: document deploying the memcached exporter (#755)

Signed-off-by: Kevin Carter <[email protected]>

Author: cloudnull

.github/workflows/helm-memcached.yaml

@@ -12,7 +12,6 @@ jobs:
       matrix:
         overlays:
           - base
-          - base-monitoring
           - aio
     name: Helm
     runs-on: ubuntu-latest

base-kustomize/memcached/base-monitoring/kustomization.yaml

@@ -14,10 +14,6 @@
 
 ### Alternative - Deploy the Memcached Cluster With Monitoring Enabled
 
-!!! note
-
-    Memcached has a base-monitoring configuration which is HA and production ready that also includes a metrics exporter for prometheus metrics collection. If you'd like to have monitoring enabled for your memcached cluster ensure the prometheus operator is installed first ([Deploy Prometheus](prometheus.md)).
-
 View the [memcached exporter](prometheus-memcached-exporter.md) instructions to install a HA ready memcached cluster with monitoring and metric collection enabled.
 
 ## Verify readiness with the following command
@@ -38,3 +34,7 @@ kubectl --namespace openstack \
 !!! Note
 
     This is a shared secret that is distributed to all services that require it. Rotating this value means updating all services.
+
+!!! Genestack
+
+    For more information on how to enable memcached monitoring with prometheus, see the [memcached exporter](prometheus-monitoring-overview.md) documentation.

docs/infrastructure-memcached.md

@@ -1,25 +1,28 @@
 # Memcached Exporter
 
-Memcached Exporter is used to expose metrics from a running Memcached deployment.
+Memcached Exporter is used to expose metrics from a running Memcached deployment. The memcached exporter is an integrated part
+of the memcached deployment in Genestack but will need to be enabled.
 
 !!! note
 
     To deploy metric exporters you will first need to deploy the Prometheus Operator, see: ([Deploy Prometheus](prometheus.md)).
 
-## Installation
+## Deploy the Memcached Cluster With Monitoring Enabled
 
-Install the Memcached Exporter
+Edit the Helm overrides file for memcached at `/etc/genestack/helm-configs/memcached/memcached-helm-overrides.yaml` and add the following values
+to enable the memcached exporter:
 
-!!! note
-
-    Following this installation step will also deploy [memcached](infrastructure-memcached.md) in a HA production ready cluster that includes monitoring via the metric exporters. If memcached is already installed running this will simply enable the exporters which allows Prometheus to begin scraping the memcached service.
+``` yaml
+metrics:
+  enabled: true
+  serviceMonitor:
+    enabled: true
+```
 
-### Deploy the Memcached Cluster With Monitoring Enabled
+Once the changes have been made, apply the changes to the memcached deployment with the `bin/install-memcached.sh` script:
 
-``` shell
-kubectl kustomize --enable-helm /etc/genestack/kustomize/memcached/base-monitoring | \
-    kubectl apply --namespace openstack --server-side -f -
-```
+!!! example "`bin/install-memcached.sh`"
 
-!!! success
-    If the installation is successful, you should see the exporter pod in the openstack namespace.
+    ``` shell
+    --8<-- "bin/install-memcached.sh"
+    ```