先上效果图
系统是Ubuntu
1. 安装Aws-cli
wget
2. 安装 Cloudwatch-agent
wget https://s3.amazonaws.com/amazoncloudwatch-agent/ubuntu/amd64/latest/amazon-cloudwatch-agent.deb
sudo dpkg -i -E ./amazon-cloudwatch-agent.deb
3. 配置 Cloudwatch-agent
sudo /opt/aws/amazon-cloudwatch-agent/bin/amazon-cloudwatch-agent-config-wizard
设置验证信息
获取验证信息 创建IAM用户时 创建编程访问密钥
sudo aws configure --profile AmazonCloudWatchAgent
access key和secret access key参照创建IAM用户时生成的csv文件输入。 输入前两项 其他默认
AWS Access Key ID [None]:******************XZ
AWS Secret Access Key [None]: ******************5a
Default region name [None]:
Default output format [None]:
生成 agent.json 这个是配置文件 定义收集系统哪些信息
sudo /opt/aws/amazon-cloudwatch-agent/bin/amazon-cloudwatch-agent-config-wizard
您使用的是 EC2 还是 On-Premises 主机？
- EC2
- On-Premises 默认选择：[1]: 2 Do you want to turn on StatsD daemon?
- yes
- no 默认选择：[1]: 2 Do you want to monitor metrics from CollectD?
- yes
- no 默认选择：[1]: 2
您要监控每个核心的 CPU 指标吗？可能会收取额外的 CloudWatch 费用。1 . 是 2. 否 默认选择：[1]: 2 如果信息可用，是否要将 ec2 维度（ImageId、InstanceId、InstanceType、AutoScalingGroupName）添加到所有指标中？1. 是 2. 无 默认选择：[1]： 2 Do you want to monitor any log files?
- yes
- no 默认选择：[1]: 2 Do you want to store the config in the SSM parameter store?
- yes
- no 默认选择：[1]: 2
设置 CloudWatch 代理
配置 CloudWatch 代理以使用之前设置的配置文件
sudo vim /opt/aws/amazon-cloudwatch-agent/etc/common-config.toml
添加以下内容
[credentials]
shared_credential_profile = "AmazonCloudWatchAgent"
启用代理
# 启动
sudo amazon-cloudwatch-agent-ctl -c file:/opt/aws/amazon-cloudwatch-agent/bin/config.json -a fetch-config -s
# 状态
sudo amazon-cloudwatch-agent-ctl -a status
# 停止
sudo amazon-cloudwatch-agent-ctl -a stop
# 日志
sudo cat /opt/aws/amazon-cloudwatch-agent/logs/amazon-cloudwatch-agent.log
问题排查
sudo systemctl status amazon-cloudwatch-agent
● amazon-cloudwatch-agent.service - Amazon CloudWatch Agent
Loaded: loaded (/etc/systemd/system/amazon-cloudwatch-agent.service; enabled; vendor preset: disabled)
Active: active (running) since Thu 2022-09-29 14:36:42 UTC; 36s ago
Main PID: 19055 (amazon-cloudwat)
Tasks: 7
Memory: 19.1M
CGroup: /system.slice/amazon-cloudwatch-agent.service
└─19055 /opt/aws/amazon-cloudwatch-agent/bin/amazon-cloudwatch-agent -config /opt/aws/amazon-cloudwatch-agent/etc/amazon-cloudwatch-agent.toml -envconfig /opt/aws/amazon-cloudwatch-agent...
Sep 29 14:36:42 ip-172-26-0-182.ap-northeast-1.compute.internal systemd[1]: Stopped Amazon CloudWatch Agent.
Sep 29 14:36:42 ip-172-26-0-182.ap-northeast-1.compute.internal systemd[1]: Started Amazon CloudWatch Agent.
Sep 29 14:36:42 ip-172-26-0-182.ap-northeast-1.compute.internal start-amazon-cloudwatch-agent[19055]: /opt/aws/amazon-cloudwatch-agent/etc/amazon-cloudwatch-agent.json does not exist or cann...ing it.
Sep 29 14:36:42 ip-172-26-0-182.ap-northeast-1.compute.internal start-amazon-cloudwatch-agent[19055]: I! Detecting run_as_user...
Hint: Some lines were ellipsized, use -l to show in full.
使用软链接修复
cd /opt/aws/amazon-cloudwatch-agent/etc/
sudo ln -s ../bin/config.json amazon-cloudwatch-agent.json
ls -l /opt/aws/amazon-cloudwatch-agent/etc/
贴一下我的amazon-cloudwatch-agent.json
{
"agent": {
"metrics_collection_interval": 60,
"run_as_user": "root"
},
"logs": {
"logs_collected": {
"files": {
"collect_list": [
{
"file_path": "/var/log/messages",
"log_group_name": "syslog",
"log_stream_name": "{instance_id}",
"retention_in_days": -1
}
]
}
}
},
"metrics": {
"aggregation_dimensions": [
[
"InstanceId"
]
],
"append_dimensions": {
"AutoScalingGroupName": "${aws:AutoScalingGroupName}",
"ImageId": "${aws:ImageId}",
"InstanceId": "${aws:InstanceId}",
"InstanceType": "${aws:InstanceType}"
},
"metrics_collected": {
"cpu": {
"measurement": [
"cpu_usage_idle",
"cpu_usage_iowait",
"cpu_usage_user",
"cpu_usage_system"
],
"metrics_collection_interval": 60,
"resources": [
"*"
],
"totalcpu": false
},
"disk": {
"measurement": [
"used_percent"
],
"metrics_collection_interval": 60,
"resources": [
"*"
]
},
"mem": {
"measurement": [
"mem_used_percent"
],
"metrics_collection_interval": 60
},
"netstat": {
"measurement": [
"tcp_established",
"tcp_time_wait"
],
"metrics_collection_interval": 60
},
"statsd": {
"metrics_aggregation_interval": 60,
"metrics_collection_interval": 10,
"service_address": ":8125"
},
"net": {
"measurement": [
"bytes_sent",
"bytes_recv",
"drop_in",
"drop_out","err_in","err_out","packets_sent","packets_recv"],
"metrics_collection_interval": 60,
"unit":"Gigabytes"
}
}
}
}
最后 使用非主账号也就是非IAM账号登入，然后在CloudWatch中查看监控数据 在全部指标 选项中 选择lightsail实例的地区 选择CWAgent 添加自己需要的监控指标即可
本文参考链接 https://dev.classmethod.jp/articles/lightsail-instance-disk-memory-monitoring/ https://linuxfun.org/en/2022/10/04/how-to-monitor-lightsail-by-cloudwatch-en/