add external backend doc for proxysql

Signed-off-by: TasdidurRahman <[email protected]>

docs/guides/elasticsearch/quickstart/overview/index.md

@@ -175,7 +175,7 @@ Here,
 Let's create the Elasticsearch CR that is shown above:
 
 ```bash
-$ kubectl apply -f https://github.com/kubedb/docs/raw/{{< param "info.version" >}}/docs/guides/elasticsearch/quickstart/overview/yamls/elasticsearch.yaml
+$ kubectl apply -f https://github.com/kubedb/docs/raw/{{< param "info.version" >}}/docs/guides/elasticsearch/quickstart/mysqlgrp/yamls/elasticsearch.yaml
 elasticsearch.kubedb.com/es-quickstart created
 ```
 
@@ -531,7 +531,7 @@ Say, the Elasticsearch CR was deleted with `spec.terminationPolicy` to `Halt` an
 You can do it by simpily re-deploying the original Elasticsearch object:
 
 ```bash
-$ kubectl apply -f https://github.com/kubedb/docs/raw/{{< param "info.version" >}}/docs/guides/elasticsearch/quickstart/overview/yamls/elasticsearch.yaml
+$ kubectl apply -f https://github.com/kubedb/docs/raw/{{< param "info.version" >}}/docs/guides/elasticsearch/quickstart/mysqlgrp/yamls/elasticsearch.yaml
 elasticsearch.kubedb.com/es-quickstart created
 ```
 

docs/guides/mariadb/quickstart/overview/index.md

@@ -79,7 +79,7 @@ spec:
 ```
 
 ```bash
-$ kubectl apply -f https://github.com/kubedb/docs/raw/{{< param "info.version" >}}/docs/guides/mariadb/quickstart/overview/examples/sample-mariadb.yaml
+$ kubectl apply -f https://github.com/kubedb/docs/raw/{{< param "info.version" >}}/docs/guides/mariadb/quickstart/mysqlgrp/examples/sample-mariadb.yaml
 mariadb.kubedb.com/sample-mariadb created
 ```
 

docs/guides/proxysql/concepts/declarativeConfiguration/index.md

@@ -25,7 +25,7 @@ With kubedb proxysql we have eased this process with declarative yaml. We have s
 User will provide the configuration under the `.spec.initConfig` section of the proxysql yaml. The operator parses the yaml and creates a configuration file. A secret is then created, holding that configuration file inside. Each time a new pod is created it is created with the configuration file inside that secret. 
 
 <p align="center">
-  <img alt="ProxySQL Declarative Configuration"  src="/docs/guides/proxysql/concepts/declarativeConfiguration/images/configuration.png">
+<img alt="ProxySQL Declarative Configuration"  src="/docs/guides/proxysql/concepts/declarativeConfiguration/images/configuration.png">
 </p>
 
 At any time the user might need to change the configuration. To serve that purpose we have introduced ProxySQLOpsRequest. When an ops-request is being created the enterprise operator updates the configuration secret and applies the changes to the proxysql cluster nodes. This is how the the configuration secret remains as a source of truth for the ProxySQL CRO and any changes are made in a declarative way. 

docs/guides/proxysql/concepts/proxysql/index.md

@@ -120,7 +120,7 @@ spec:
 
 ### .spec.backend
 
-`.spec.backend` specifies the information about the appbinding of the backend MySQL/PerconaXtraDB/MariaDB. The appbinding should contain the basic informations like connections url, server type , ssl infos etc. To know more about what appbinding is, you can refer to the Appbinding page in the concept section. See the api [here](https://pkg.go.dev/kubedb.dev/[email protected]/apis/kubedb/v1alpha2#:~:text=//%20Backend%20refers%20to%20the%20AppBinding%20of%20the%20backend%20MySQL/MariaDB/Percona%2DXtraDB%20server%0A%09Backend%20*core.LocalObjectReference%20%60json%3A%22backend%2Comitempty%22%60).
+`.spec.backend` specifies the information about the appbinding of the backend MySQL/PerconaXtraDB/MariaDB. The appbinding should contain the basic informations like connections url, server type , ssl infos etc. To know more about what appbinding is, you can refer to the [Appbinding](/docs/guides/proxysql/concepts/appbinding/index.md) page in the concept section. See the api [here](https://pkg.go.dev/kubedb.dev/[email protected]/apis/kubedb/v1alpha2#:~:text=//%20Backend%20refers%20to%20the%20AppBinding%20of%20the%20backend%20MySQL/MariaDB/Percona%2DXtraDB%20server%0A%09Backend%20*core.LocalObjectReference%20%60json%3A%22backend%2Comitempty%22%60).
 
 ### .spec.authSecret
 
@@ -171,6 +171,8 @@ ProxySQL managed by KubeDB can be monitored with builtin-Prometheus and Promethe
 
 `.spec.initConfig.adminVariables` section carries all the `admin_variables` info that you want to set for the proxysql. You need to mention the variables you want to set with its value in a key-value format under this section and the KubeDB operator will bootstrap the proxysql with this.
 
+Checkout this [link](/docs/guides/proxysql/concepts/declarativeConfiguration/index.md) for detailed overview on declarative configuration. 
+
 ### .spec.configSecret
 
 `.spec.configSecret` is another field to pass the bootstrap configuration for the proxysql. If you want to pass the configuration through a secret you can just mention the secret name under this field. The secret should look something like the following 

docs/guides/proxysql/quickstart/overview/index.md → docs/guides/proxysql/quickstart/mysqlgrp/index.md

@@ -61,7 +61,7 @@ spec:
 ```
 
 ```bash
-$ kubectl apply -f https://github.com/kubedb/docs/raw/{{< param "info.version" >}}/docs/guides/proxysql/quickstart/overview/examples/sample-mysql.yaml
+$ kubectl apply -f https://github.com/kubedb/docs/raw/{{< param "info.version" >}}/docs/guides/proxysql/quickstart/mysqlgrp/examples/sample-mysql.yaml
 mysql.kubedb.com/mysql-server created
 ```
 
@@ -143,7 +143,7 @@ This is the simplest version of a KubeDB ProxySQL server. Here in the `.spec.ver
 Now let's apply the yaml. 
 
 ```yaml
-$ kubectl apply -f https://github.com/kubedb/docs/raw/{{< param "info.version" >}}/docs/guides/proxysql/quickstart/overview/examples/sample-proxysql.yaml
+$ kubectl apply -f https://github.com/kubedb/docs/raw/{{< param "info.version" >}}/docs/guides/proxysql/quickstart/mysqlgrp/examples/sample-proxysql.yaml
   proxysql.kubedb.com/proxysql-server created
 ```
 
@@ -261,7 +261,7 @@ spec:
 Let's apply the yaml. 
 
 ```yaml
-$ kubectl apply -f https://github.com/kubedb/docs/raw/{{< param "info.version" >}}/docs/guides/proxysql/quickstart/overview/examples/ubuntu.yaml
+$ kubectl apply -f https://github.com/kubedb/docs/raw/{{< param "info.version" >}}/docs/guides/proxysql/quickstart/mysqlgrp/examples/ubuntu.yaml
 deployment.apps/ubuntu created
 ```
 

docs/guides/proxysql/quickstart/xtradbext/examples/appbinding.yaml

@@ -0,0 +1,20 @@
+apiVersion: appcatalog.appscode.com/v1alpha1
+kind: AppBinding
+metadata:
+  name: xtradb-galera-appbinding
+  namespace: demo
+spec:
+  clientConfig:
+    caBundle: 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
+    service:
+      name: xtradb-galera
+      path: /
+      port: 3306
+      scheme: mysql
+    url: tcp(xtradb-galera.demo.svc:3306)/
+  secret:
+    name: xtradb-galera-auth
+  type: perconaxtradb
+  tlsSecret:
+    name: xtradb-galera-client-cert
+  version: 8.0.26

docs/guides/proxysql/quickstart/xtradbext/examples/sample-proxy.yaml

@@ -0,0 +1,12 @@
+apiVersion: kubedb.com/v1alpha2
+kind: ProxySQL
+metadata:
+  name: proxy-server
+  namespace: demo
+spec:
+  version: "2.4.4-debian"
+  replicas: 1
+  syncUsers: true
+  backend:
+    name: xtradb-galera-appbinding
+  terminationPolicy: WipeOut

docs/guides/proxysql/quickstart/xtradbext/examples/ubuntu.yaml

@@ -0,0 +1,26 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  creationTimestamp: null
+  labels:
+    app: ubuntu
+  name: ubuntu
+  namespace: demo
+spec:
+  replicas: 1
+  selector:
+    matchLabels:
+      app: ubuntu
+  strategy: {}
+  template:
+    metadata:
+      creationTimestamp: null
+      labels:
+        app: ubuntu
+    spec:
+      containers:
+        - image: ubuntu
+          imagePullPolicy: IfNotPresent
+          name: ubuntu
+          command: ["/bin/sleep", "3650d"]
+          resources: {}