docs/managed-victoriametrics: add notifications setup

docs/managed-victoriametrics/README.md

@@ -14,6 +14,7 @@ Guides:
 * [Quick Start](/managed-victoriametrics/quickstart.html)
 * [Kubernetes Monitoring with Managed VictoriaMetrics](/managed-victoriametrics/how-to-monitor-k8s.html)
 * [Understand Your Setup Size](/guides/understand-your-setup-size.html)
+* [Setup Notifications](/managed-victoriametrics/setup-notifications.html)
 
 
 See more about Managed VictoriaMetrics in the following articles:

docs/managed-victoriametrics/setup-notifications.md

@@ -0,0 +1,104 @@
+---
+sort: 6
+weight: 6
+title: Notifications in Managed VictoriaMetrics
+menu:
+  docs:
+    parent: "managed"
+    weight: 6
+---
+# Notifications in Managed VictoriaMetrics
+
+This section add ability to setup channels for sending alerting notifications.
+
+The document covers the following topics
+1. [Setup slack channels](#setup-slack-channels)
+2. [Setup emails](#setup-emails)
+3. [Send test notification](#send-test-notification)
+
+When you entered to the notification section you will be able to fill in the channels in which you 
+want to receive notifications
+
+<p>
+  <img src="notifications-start.png" width="800">
+</p>
+
+## Setup slack channels
+
+To send alerts to Slack, it is required to set up a webhook. How to do this is indicated on the following 
+link <a href="https://api.slack.com/messaging/webhooks" target="_blank">https://api.slack.com/messaging/webhooks</a>
+
+When webhook enabled correctly the next step is fill channels and webhook fields in the managed-victoriametrics.
+
+<p>
+  <img src="notifications-slack-channels-webhook.png" width="800">
+</p>
+
+If you want to set slack channels just enter one or more channels into input and press enter or choose it after each input.
+
+<p>
+  <img src="notifications-slack-channel.png" width="800">
+</p>
+
+<p>
+  <img src="notifications-slack-channels.png" width="800">
+</p>
+
+If you want to delete it simply press cross on entered element.
+
+<p>
+  <img src="notifications-slack-channels-delete.png" width="800">
+</p>
+
+## Setup emails
+
+If you want to set emails just enter one or more email into input and press enter or choose it after each input. 
+By default, account holder will be present in the email field. 
+
+<p>
+  <img src="notifications-emails.png" width="800">
+</p>
+
+<p>
+  <img src="notifications-emails-filled.png" width="800">
+</p>
+
+If you want to delete it simply press cross on entered element.
+
+<p>
+  <img src="notifications-emails-delete.png" width="800">
+</p>
+
+## Send test notification
+
+When all fields are filled in correctly, all entered information should be saved.
+
+Press Save or Save and Test button.
+
+<p>
+  <img src="notifications-buttons.png" width="800">
+</p>
+
+If the Save button is pressed, then entered channels will be only saved, and you get a success message.
+
+<p>
+  <img src="notifications-saved-successfully.png" width="800">
+</p>
+
+If the Save and Test button is pressed, then all entered information will be saved, 
+and test notifications will be sent to the entered channels
+
+<p>
+  <img src="notifications-save-and-test.png" width="800">
+</p>
+
+All test notifications will be sent to the defined channels.
+
+<p>
+  <img src="notifications-slack-test.png" width="800">
+</p>
+
+<p>
+  <img src="notifications-email-test.png" width="800">
+</p>
+