1.创建IAM角色并关联到EC2
2.安装cloudwatch代理
3.生成代理配置文件
4.启动代理
Linux
sudo mkdir -p /usr/share/collectd
cd /usr/share/collectd
sudo touch types.db
sudo /opt/aws/amazon-cloudwatch-agent/bin/amazon-cloudwatch-agent-ctl -a fetch-config -m ec2 -s -c file:/opt/aws/amazon-cloudwatch-agent/bin/config.json
sudo /opt/aws/amazon-cloudwatch-agent/bin/amazon-cloudwatch-agent-ctl -m ec2 -a status
tail -f /opt/aws/amazon-cloudwatch-agent/logs/configuration-validation.log
Windows（powershell下执行）
& "C:\Program Files\Amazon\AmazonCloudWatchAgent\amazon-cloudwatch-agent-ctl.ps1" -a fetch-config -m ec2 -s -c file:"C:\Program Files\Amazon\AmazonCloudWatchAgent\config.json"
5.创建报警规则
常用命令：
sudo /opt/aws/amazon-cloudwatch-agent/bin/amazon-cloudwatch-agent-config-wizard
sudo /opt/aws/amazon-cloudwatch-agent/bin/amazon-cloudwatch-agent-ctl -m ec2 -a stop
sudo /opt/aws/amazon-cloudwatch-agent/bin/amazon-cloudwatch-agent-ctl -m ec2 -a start
sudo /opt/aws/amazon-cloudwatch-agent/bin/amazon-cloudwatch-agent-ctl -m ec2 -a status
sudo /opt/aws/amazon-cloudwatch-agent/bin/amazon-cloudwatch-agent-ctl -a fetch-config -m ec2 -s -c file:/opt/aws/amazon-cloudwatch-agent/bin/config.json
修改agent配置参数：
sudo vi /opt/aws/amazon-cloudwatch-agent/bin/config.json
重启agent使配置生效：
sudo /opt/aws/amazon-cloudwatch-agent/bin/amazon-cloudwatch-agent-ctl -a fetch-config -m ec2 -s -c file:/opt/aws/amazon-cloudwatch-agent/bin/config.json
当前配置config.json示例：
{
"agent": {
"metrics_collection_interval": 60,
"run_as_user": "root"
},
"metrics": {
"append_dimensions": {
"AutoScalingGroupName": "${aws:AutoScalingGroupName}",
"ImageId": "${aws:ImageId}",
"InstanceId": "${aws:InstanceId}",
"InstanceType": "${aws:InstanceType}"
},
"metrics_collected": {
"collectd": {
"metrics_aggregation_interval": 60
},
"disk": {
"measurement": [
"used_percent"
],
"metrics_collection_interval": 60,
"resources": [
"/",
"/mnt"
]
},
"mem": {
"measurement": [
"mem_used_percent"
],
"metrics_collection_interval": 60
},
"statsd": {
"metrics_aggregation_interval": 60,
"metrics_collection_interval": 10,
"service_address": ":8125"
}
}
}
}
amazon-cloudwatch-agent-ctl参数说明：
usage: amazon-cloudwatch-agent-ctl -a
stop|start|status|fetch-config|append-config|remove-config [-m
ec2|onPremise|auto] [-c default|all|ssm:<parameter-store-name>|file:<file-path>] [-o default|all|ssm:<parameter-store-name>|file:<file-path>] [-s]
e.g.
1. apply a SSM parameter store config on EC2 instance and restart the agent afterwards:
amazon-cloudwatch-agent-ctl -a fetch-config -m ec2 -c ssm:AmazonCloudWatch-Config.json -s
2. append a local json config file on onPremise host and restart the agent afterwards:
amazon-cloudwatch-agent-ctl -a append-config -m onPremise -c file:/tmp/config.json -s
3. query agent status:
amazon-cloudwatch-agent-ctl -a status
-a: action
stop: stop the agent process.
start: start the agent process.
status: get the status of the agent process.
fetch-config: apply config for agent, followed by -c or -o or both. Target config can be based on location (ssm parameter store name, file name), or 'default'.
append-config: append json config with the existing json configs if any, followed by -c. Target config can be based on the location (ssm parameter store name, file name), or 'default'.
remove-config: remove config for agent, followed by -c or -o or both. Target config can be based on the location (ssm parameter store name, file name), or 'all'.
-m: mode
ec2: indicate this is on ec2 host.
onPremise: indicate this is on onPremise host.
auto: use ec2 metadata to determine the environment, may not be accurate if ec2 metadata is not available for some reason on EC2.
-c: amazon-cloudwatch-agent configuration
default: default configuration for quick trial.
ssm:<parameter-store-name>: ssm parameter store name.
file:<file-path>: file path on the host.
all: all existing configs. Only apply to remove-config action.
-o: cwagent-otel-collector configuration
default: default configuration for quick trial.
ssm:<parameter-store-name>: ssm parameter store name.
file:<file-path>: file path on the host.
all: all existing configs. Only apply to remove-config action.
-s: optionally restart after configuring the agent configuration
this parameter is used for 'fetch-config', 'append-config', 'remove-config' action only.
参考来源：https://docs.amazonaws.cn/AmazonCloudWatch/latest/monitoring/Install-CloudWatch-Agent.html
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