add autoscaling

Signed-off-by: Ashraful Haque Tani <[email protected]>

docs/guides/proxysql/quickstart/mysqlgrp/examples/sample-proxysql-v1.yaml

@@ -5,7 +5,26 @@ metadata:
   namespace: demo
 spec:
   version: "2.3.2-debian"
-  replicas: 1
+  replicas: 3
+  podTemplate:
+    spec:
+      containers:
+        - name: proxysql
+          resources:
+            limits:
+              cpu: 500m
+              memory: 128Mi
+            requests:
+              cpu: 250m
+              memory: 64Mi
+      securityContext:
+        runAsGroup: 999
+        runAsNonRoot: true
+        runAsUser: 999
+        seccompProfile:
+          type: RuntimeDefault
+      podPlacementPolicy:
+        name: default
   syncUsers: true
   backend:
     name: mysql-server

docs/guides/singlestore/autoscaler/_index.md

@@ -0,0 +1,10 @@
+---
+title: SingleStore
+menu:
+  docs_{{ .version }}:
+    identifier: sdb-auto-scaling
+    name: SingleStore
+    parent: guides-singlestore
+    weight: 10
+menu_name: docs_{{ .version }}
+---

docs/guides/singlestore/autoscaler/compute/_index.md

@@ -0,0 +1,10 @@
+---
+title: Compute Autoscaling
+menu:
+  docs_{{ .version }}:
+    identifier: sdb-compute-auto-scaling
+    name: Compute Autoscaling
+    parent: sdb-auto-scaling
+    weight: 46
+menu_name: docs_{{ .version }}
+---

docs/guides/singlestore/autoscaler/compute/overview.md

@@ -0,0 +1,55 @@
+---
+title: SingleStore Compute Autoscaling Overview
+menu:
+  docs_{{ .version }}:
+    identifier: sdb-auto-scaling-overview
+    name: Overview
+    parent: sdb-compute-auto-scaling
+    weight: 10
+menu_name: docs_{{ .version }}
+section_menu_id: guides
+---
+
+> New to KubeDB? Please start [here](/docs/README.md).
+
+# SingleStore Compute Resource Autoscaling
+
+This guide will give an overview on how KubeDB Autoscaler operator autoscales the database compute resources i.e. cpu and memory using `singlestoreautoscaler` crd.
+
+## Before You Begin
+
+- You should be familiar with the following `KubeDB` concepts:
+  - [SingleStore](/docs/guides/singlestore/concepts/singlestore.md)
+  - [SingleStoreAutoscaler](/docs/guides/singlestore/concepts/autoscaler.md)
+  - [SingleStoreOpsRequest](/docs/guides/singlestore/concepts/opsrequest.md)
+
+## How Compute Autoscaling Works
+
+The following diagram shows how KubeDB Autoscaler operator autoscales the resources of `SingleStore` database components. Open the image in a new tab to see the enlarged version.
+
+<figure align="center">
+  <img alt="Compute Auto Scaling process of SingleStore" src="/docs/images/singlestore/compute-process.svc">
+<figcaption align="center">Fig: Compute Auto Scaling process of SingleStore</figcaption>
+</figure>
+
+The Auto Scaling process consists of the following steps:
+
+1. At first, a user creates a `SingleStore` Custom Resource Object (CRO).
+
+2. `KubeDB` Provisioner  operator watches the `SingleStore` CRO.
+
+3. When the operator finds a `SingleStore` CRO, it creates required number of `PetSets` and related necessary stuff like secrets, services, etc.
+
+4. Then, in order to set up autoscaling of the various components (ie. Aggregator, Leaf, Standalone) of the `SingleStore` database the user creates a `SingleStoreAutoscaler` CRO with desired configuration.
+
+5. `KubeDB` Autoscaler operator watches the `SingleStoreAutoscaler` CRO.
+
+6. `KubeDB` Autoscaler operator generates recommendation using the modified version of kubernetes [official recommender](https://github.com/kubernetes/autoscaler/tree/master/vertical-pod-autoscaler/pkg/recommender) for different components of the database, as specified in the `SingleStoreAutoscaler` CRO.
+
+7. If the generated recommendation doesn't match the current resources of the database, then `KubeDB` Autoscaler operator creates a `SingleStoreOpsRequest` CRO to scale the database to match the recommendation generated.
+
+8. `KubeDB` Ops-manager operator watches the `SingleStoreOpsRequest` CRO.
+
+9. Then the `KubeDB` Ops-manager operator will scale the database component vertically as specified on the `SingleStoreOpsRequest` CRO.
+
+In the next docs, we are going to show a step by step guide on Autoscaling of various MongoDB database components using `SingleStoreAutoscaler` CRD.