Is cloudwatch configured and installed on Amazon Linux 2023

Thank you, for the Amazon Linux 2023, it does look like the cloudwatch agent is installed, which is listed in this doc https://docs.aws.amazon.com/linux/al2023/release-notes/all-packages-AL2023.2.html

The documentation you shared only indicates that the CloudWatch Agent is included in the package. That is, you need to run the dnf install command to install the CloudWatch Agent. https://repost.aws/knowledge-center/cloudwatch-push-metrics-unified-agent

sudo dnf install amazon-cloudwatch-agent -y

By the way, Amazon Linxu2023 does not output "/var/log/messages" by default, so you need to install "rsyslog" with the following command.

sudo dnf -y install rsyslog
sudo systemctl enable rsyslog
sudo systemctl restart rsyslog

An example configuration for CloudWatch Agent is as follows.

{
	"agent": {
		"run_as_user": "root"
	},
	"logs": {
		"logs_collected": {
			"files": {
				"collect_list": [
					{
						"file_path": "/var/log/messages",
						"log_group_name": "AmazonLinux2023",
						"log_stream_name": "{instance_id}"
					}
				]
			}
		}
	}
}