aws cloudwatch memory monitoring 추가

cloudwatch 설치 및 설정 추가 (memory monitoring)

cd /tmp && wget https://s3.amazonaws.com/amazoncloudwatch-agent/amazon_linux/amd64/latest/amazon-cloudwatch-agent.rpm
rpm -U ./amazon-cloudwatch-agent.rpm

instance_id=$(curl http://169.254.169.254/latest/meta-data/instance-id)
ImageId=$(curl http://169.254.169.254/latest/meta-data/ami-id)
InstanceType=$(curl http://169.254.169.254/latest/meta-data/instance-type)

##################################################
# Manually Create or Edit the CloudWatch Agent Configuration File
# https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/CloudWatch-Agent-Configuration-File-Details.html
##################################################

mkdir /usr/share/collectd
cd /usr/share/collectd && touch types.db
sudo tee "/opt/aws/amazon-cloudwatch-agent/etc/amazon-cloudwatch-agent.json" >/dev/null <<EOF
{
        "agent": {
                "metrics_collection_interval": 60,
                "run_as_user": "root"
        },
        "logs": {
                "logs_collected": {
                        "files": {
                                "collect_list": [
                                        {
                                                "file_path": "",
                                                "log_group_name": ".",
                                                "log_stream_name": "${instance_id}"
                                        }
                                ]
                        }
                }
        },
        "metrics": {
                   "metrics_collected": {
                        "collectd": {
                                "metrics_aggregation_interval": 60
                        },
                        "mem": {
                                "measurement": [
                                        "mem_used",
                                        "mem_cached",
                                        "mem_total",
                                        "mem_used_percent"
                                ],
                                "metrics_collection_interval": 60,
                                "append_dimensions": {
                                          "ImageId": "${ImageId}",
                                          "InstanceId": "${instance_id}",
                                          "InstanceType": "${InstanceType}"
                                        }
                        },
                        "swap": {
                                "measurement": [
                                        "swap_used",
                                        "swap_free",
                                        "swap_used_percent"
                                ],
                                "metrics_collection_interval": 60,
                                "append_dimensions": {
                                          "ImageId": "${ImageId}",
                                          "InstanceId": "${instance_id}",
                                          "InstanceType": "${InstanceType}"
                                        }
                        }
                   }
        }
}
EOF

명령줄을 사용하여 CloudWatch 에이전트 시작

/opt/aws/amazon-cloudwatch-agent/bin/amazon-cloudwatch-agent-ctl -a fetch-config -m ec2 -c file:/opt/aws/amazon-cloudwatch-agent/etc/amazon-cloudwatch-agent.json -s