AWS: T425: cloudwatch

docs/installation/cloud/aws.rst

@@ -49,9 +49,54 @@ Deploy VyOS on Amazon :abbr:`AWS (Amazon Web Services)`
     ssh -i ~/.ssh/amazon.pem vyos@203.0.113.3
     vyos@ip-192-0-2-10:~$
 
+Amazon CloudWatch Agent Usage
+-----------------------------
 
+To use Amazon CloudWatch Agent, configure it within the Amazon SSM Parameter Store. If you don't have a configuration yet, do :ref:`configuration_creation`.
 
+1. Create an :abbr:`IAM (Identity and Access Management)` role for the :abbr:`EC2 (Elastic Compute Cloud)` instance to access CloudWatch service, and name it CloudWatchAgentServerRole. The role should contain two default policies: CloudWatchAgentServerPolicy and AmazonSSMManagedInstanceCore.  
+
+2. Attach the created role to your VyOS :abbr:`EC2 (Elastic Compute Cloud)` instance.
+
+3. Ensure that amazon-cloudwatch-agent package is installed. 
+
+  .. code-block:: none
+
+    $ sudo apt list --installed | grep amazon-cloudwatch-agent
+
+  .. note:: The amazon-cloudwatch-agent package is normally included in VyOS 1.3.3+ and 1.4+
+
+3. Retreive an existing CloudWatch Agent configuration from the :abbr:`SSM (Systems Manager)` Parameter Store.
+
+  .. code-block:: none
+
+    $ sudo /opt/aws/amazon-cloudwatch-agent/bin/amazon-cloudwatch-agent-ctl -a fetch-config -m ec2 -s -c ssm:<your-configuration-name>
+
+  This step also enables systemd service and runs it.
+
+  .. note:: The VyOS platform-specific scripts feature is under development. Thus, this step should be repeated manually after changing system image (:doc:`/installation/update`)
+
+.. _configuration_creation:
+
+CloudWatch SSM Configuration creation
+^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
+
+Creating the Amazon Cloudwatch Agent Configuration in Amazon :abbr:`SSM (Systems Manager)` Parameter Store.
+
+1. Create an :abbr:`IAM (Identity and Access Management)` role for your :abbr:`EC2 (Elastic Compute Cloud)` instance to access the CloudWatch service. Name it CloudWatchAgentAdminRole. The role should contain at two default policies: CloudWatchAgentAdminPolicy and AmazonSSMManagedInstanceCore.  
+
+  .. note:: CloudWatchAgentServerRole is too permisive and should be used for single configuration creation and deployment. That's why after completion of step #3 higly recommended to replace instance CloudWatchAgentAdminRole role with CloudWatchAgentServerRole.
+
+2. Run Cloudwatch configuration wizard.
+
+  .. code-block:: none
+
+    $ sudo /opt/aws/amazon-cloudwatch-agent/bin/amazon-cloudwatch-agent-config-wizard
+
+3. When prompted, answer "yes" to the question "Do you want to store the config in the SSM parameter store?".
 
 References
 ----------
-https://console.aws.amazon.com/
+- https://console.aws.amazon.com/
+- https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/create-iam-roles-for-cloudwatch-agent.html
+- https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/install-CloudWatch-Agent-on-EC2-Instance-fleet.html