아래 내용을 진행하기 전에 log agent를 실행할 EC2 인스턴스에 cloudwatchAgentServerPolicy Role을 먼저 설정해주어야 합니다.
Agent 설치
wget https://s3.amazonaws.com/amazoncloudwatch-agent/ubuntu/amd64/latest/amazon-cloudwatch-agent.deb sudo dpkg -i -E ./amazon-cloudwatch-agent.deb
Wizard를 이용한 설정
sudo /opt/aws/amazon-cloudwatch-agent/bin/amazon-cloudwatch-agent-config-wizard
위 명령을 사용하면 cloudwatch 설정을 할 수 있는 스크립트가 실행된다. 대략 아래와 같은 스텝으로 설정이 진행된다.
=============================================================
= Welcome to the AWS CloudWatch Agent Configuration Manager =
=============================================================
On which OS are you planning to use the agent?
1. linux
2. windows
3. darwin
default choice: [1]:
1
Trying to fetch the default region based on ec2 metadata...
Are you using EC2 or On-Premises hosts?
1. EC2
2. On-Premises
default choice: [1]:
1
Which user are you planning to run the agent?
1. root
2. cwagent
3. others
default choice: [1]:
1
Do you want to turn on StatsD daemon?
1. yes
2. no
default choice: [1]:
2
Do you want to monitor metrics from CollectD?
1. yes
2. no
default choice: [1]:
2
Do you want to monitor any host metrics? e.g. CPU, memory, etc.
1. yes
2. no
default choice: [1]:
2
Do you have any existing CloudWatch Log Agent (http://docs.aws.amazon.com/AmazonCloudWatch/latest/logs/AgentReference.html) configuration file to import for migration?
1. yes
2. no
default choice: [2]:
1
What is the file path for the existing cloudwatch log agent configuration file?
default choice: [/var/awslogs/etc/awslogs.conf]
Do you want to monitor any log files?
1. yes
2. no
default choice: [1]:
1
Log file path:
/var/log/syslog
Log group name:
default choice: [syslog]
Log stream name:
default choice: [{instance_id}]
Do you want to specify any additional log files to monitor?
1. yes
2. no
default choice: [1]:
2
Saved config file to /opt/aws/amazon-cloudwatch-agent/bin/config.json successfully.
Current config as follows:
{
"agent": {
"run_as_user": "root"
},
"logs": {
"logs_collected": {
"files": {
"collect_list": [
{
"file_path": "/var/log/syslog",
"log_group_name": "syslog",
"log_stream_name": "{instance_id}"
}
]
}
}
}
}
Please check the above content of the config.
The config file is also located at /opt/aws/amazon-cloudwatch-agent/bin/config.json.
Edit it manually if needed.
Do you want to store the config in the SSM parameter store?
1. yes
2. no
default choice: [1]:
2
Program exits now.
서비스 실행
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 start
서비스 실행 확인
sudo /opt/aws/amazon-cloudwatch-agent/bin/amazon-cloudwatch-agent-ctl -m ec2 -a status more /opt/aws/amazon-cloudwatch-agent/logs/amazon-cloudwatch-agent.log
참고
- https://www.comtec.kr/2021/03/31/ubuntu-20-04-cloudwatch-agent-%EC%84%A4%EC%B9%98/