STAC-21754: Check the storage docs and put some notes on caveats and …

…how/when to change them

setup/install-stackstate/kubernetes_openshift/storage.md

@@ -15,6 +15,7 @@ To remove the PVC's either remove them manually with `kubectl delete pvc` or del
 ## Customize storage
 
 You can customize the `storageClass` and `size` settings for different volumes in the Helm chart. These example values files show how to change the storage class or the volume size. These can be merged to change both at the same time.
+For the `size` we provide the sameple for both `HA` and `NonHa` depending on the sizing profile chosen during the installation process.
 
 {% tabs %}
 {% tab title="Changing storage class" %}
@@ -38,8 +39,12 @@ victoria-metrics-1:
 ```
 {% endtab %}
 
-{% tab title="Changing volume size" %}
+{% tab title="Changing volume size for HA" %}
 ```yaml
+clickhouse:
+ persistence:
+ # Size of persistent volume for each clickhouse pod
+ size: 50Gi
 elasticsearch:
  volumeClaimTemplate:
  resources:
@@ -63,13 +68,13 @@ hbase:
 kafka:
  persistence:
  # size of persistent volume for each Kafka pod
- size: 50Gi
+ size: 100Gi
 
 
 zookeeper:
  persistence:
  # size of persistent volume for each Zookeeper pod
- size: 50Gi
+ size: 8Gi
 
 victoria-metrics-0:
  server:
@@ -99,6 +104,63 @@ stackstate:
  size: 10Gi
 ```
 {% endtab %}
+{% tab title="Changing volume size Non-Ha" %}
+```yaml
+clickhouse:
+ persistence:
+ # Size of persistent volume for each clickhouse pod
+ size: 50Gi
+
+elasticsearch:
+ volumeClaimTemplate:
+ resources:
+ requests:
+ # size of volume for each Elasticsearch pod
+ storage: 250Gi
+
+hbase:
+ stackgraph:
+ persistence:
+ # Size of persistent volume for the single stackgraph hbase pod
+ size: 100Gi
+
+kafka:
+ persistence:
+ # size of persistent volume for each Kafka pod
+ size: 100Gi
+
+
+zookeeper:
+ persistence:
+ # size of persistent volume for each Zookeeper pod
+ size: 8Gi
+
+victoria-metrics-0:
+ server:
+ persistentVolume:
+ size: 50Gi
 
+stackstate:
+ components:
+ checks:
+ tmpToPVC:
+ volumeSize: 2Gi
+ healthSync:
+ tmpToPVC:
+ volumeSize: 2Gi
+ state:
+ tmpToPVC:
+ volumeSize: 2Gi
+ sync:
+ tmpToPVC:
+ volumeSize: 2Gi
+ vmagent:
+ persistence:
+ size: 10Gi
+```
+{% endtab %}
 {% endtabs %}
 
+{% hint style="info" %}
+The NonHa example belongs to the biggest NonHa instance meant to observe 100 nodes and retain data for 2 weeks.
+{% endhint %}

setup/install-stackstate/requirements.md

@@ -47,7 +47,11 @@ For our different installation profiles, the following are the defaulted storage
 
 | | 10 non-HA | 20 non-HA | 50 non-HA | 100 non-HA | 150 HA | 250 HA | 500 HA |
 | --- | --- | --- | --- | --- | --- | --- |
-| **Storage requirement** | 700GB | 700GB | 700GB | 850GB | 2TB | 2TB | 2TB |
+| **Storage requirement** | 420GB | 420GB | 420GB | 600GB | 2TB | 2TB | 2.5TB |
+
+{% hint style="info" %}
+The storage estimates presented take into account a default of 14 days of retention for NONHA and 1 month for HA installations. For test instances where the are not meant as long live instances the storage sizes can be reduced.
+{% endhint %}
 
 For more details on the defaults used, see the page [Configure storage](/setup/install-stackstate/kubernetes_openshift/storage.md).