前言

场景说明

客户有多台EC2实例，分布在新加披、香港、东京区域，各服务都需要监控到内存、磁盘使用情况，因此手动一台一台执行安装命令可能会花费大量的实践。所以需要使用Systems Manager服务来做批量命令的执行，达到每台EC2实例CloudWatch都能监控到内存和磁盘的指标

环境准备

海外AWS Root账户或者IAM账户（IAM用户需具有相关权限）
EC2实例需要绑定角色（角色拥有的策略AmazonSSMFullAccess、CloudWatchAgentServerPolicy）
默认使用AWS AM镜像，或者EC2实例已安装SSM Agent

SSM Agent安装步骤

mkdir /tmp/ssm
curl https://s3.amazonaws.com/ec2-downloads-windows/SSMAgent/latest/linux_amd64/amazon-ssm-agent.rpm -o /tmp/ssm/amazon-ssm-agent.rpm
sudo yum install -y /tmp/ssm/amazon-ssm-agent.rpm
sudo systemctl enable amazon-ssm-agent
sudo systemctl start amazon-ssm-agent
sudo systemctl status amazon-ssm-agent

sudo status amazon-ssm-agent
sudo start amazon-ssm-agent
sudo status amazon-ssm-agent

实践步骤

一、运行命令

1、Systems Manager控制台

找到“节点管理”，点击“运行命令”,再点击页面右上角的“运行命令”

2、AWS-RunShellScript使用

搜索“AWS-RunShellScript”，下拉到“命令参数”

#!/bin/bash
wget https://s3.amazonaws.com/amazoncloudwatch-agent/amazon_linux/amd64/latest/amazon-cloudwatch-agent.rpm
sudo rpm -U ./amazon-cloudwatch-agent.rpm
sudo touch /opt/aws/amazon-cloudwatch-agent/etc/amazon-cloudwatch-agent.json
sudo sh -c 'echo "{
    \"agent\": {
        \"metrics_collection_interval\": 60,
        \"run_as_user\": \"cwagent\"
    },
    \"metrics\": {
        \"append_dimensions\": {
            \"InstanceId\": \"\${aws:InstanceId}\"
        },
        \"metrics_collected\": {
            \"disk\": {
                \"measurement\": [
                    \"used_percent\"
                ],
                \"metrics_collection_interval\": 60,
                \"resources\": [
                    \"*\"
                ]
            },
            \"mem\": {
                \"measurement\": [
                    \"mem_used_percent\"
                ],
                \"metrics_collection_interval\": 60
            }
        }
    }
}" > /opt/aws/amazon-cloudwatch-agent/etc/amazon-cloudwatch-agent.json'
sudo systemctl enable amazon-cloudwatch-agent.service
sudo systemctl start amazon-cloudwatch-agent.service
sudo systemctl status amazon-cloudwatch-agent.service

在“目标”中选择“手动选择实例”，勾选需要执行命令的EC2实例