[Infra] Datadog to server 연결하기

https://soobysu.tistory.com/247

[infra] datadog 설치

설치가 완료 후,

Java Agent 심기

curl -Lo dd-java-agent.jar 'https://dtdg.co/latest-java-tracer'

services:
  batch-app:
    image: eclipse-temurin:21-jdk
    container_name: app
    restart: unless-stopped
    volumes:
      - ./dd-java-agent.jar:/app/dd-java-agent.jar:ro
      - ./app.jar:/app/batch-app.jar:rw
    ports:
      - "8080:8080"
    environment:
      - TZ=Asia/Seoul
      - DD_AGENT_HOST=172.17.0.1
      - DD_ENV=prd
      - DD_SERVICE=batch-app
      - DD_VERSION=1.0.0
      - DD_LOGS_ENABLED=false
      - DD_TRACE_ENABLED=true
    command: >
      java -server
      -Dfile.encoding=UTF-8
      -Ddd.logs.injection=false
      -Ddd.profiling.enabled=true
      -jar /app/app.jar

Log 는 파일을 읽어서 추적 해준다.

 

설정 확인

sudo datadog-agent status

로 설정을 확인 확인할 수 있다.

#로그 확인
==========
Logs Agent
==========

    Reliable: Sending compressed logs in HTTPS to agent-http-intake.logs.... on port 443 (API Key: ***************************)
    BytesSent: 73536
    EncodedBytesSent: 18635
    LogsProcessed: 0
    LogsSent: 2
    LogsTruncated: 0
    RetryCount: 0
    RetryTimeSpent: 0s
    CoreAgentProcessOpenFiles: 27
    OSFileLimit: 524287
    
#트레이스 확인
=========
APM Agent
=========

  Status: Running
  Pid: 
  Uptime: 389 seconds
  Mem alloc: 13,598,256 bytes
  Hostname: 
  Receiver: 
  Endpoints:
    https://

  Receiver (previous minute)
  ==========================
    From java * , client 1.55.0~364bb8b68f
      Traces received: 25 (76,480 bytes)
      Spans received: 97

    From java *, client 1.55.0~364bb8b68f
      Traces received: 4 (5,748 bytes)
      Spans received: 8



    Priority sampling rate for '*': 100.0%
    Priority sampling rate for '*': 100.0%

  Writer (previous minute)
  ========================
    Traces: 2 payloads, 4 traces, 0 events, 4,119 bytes
    Stats: 1 payloads, 1 stats buckets, 886 bytes

로그 확인

 sudo journalctl -u datadog-agent -n 50

로그를 확인 해보면

check:redisdb | Error running check: Error 111 connecting to 172.30.0.63:6379

위와 같은 로그를 찾을 수 있는데 dataDog 이 자동으로 6379(redis) 를 찾으려고 했지만 실패한 로그이다.

레디스가 없다면 아래와 같은 명령어로 disabled 처리를 해준다.

 sudo mv /etc/datadog-agent/conf.d/redisdb.d/auto_conf.yaml /etc/datadog-agent/conf.d/redisdb.d/auto_conf.yaml.disabled
 sudo systemctl restart datadog-agent

---

설정 확인

APM -> Services -> Reliablility 

들어오면 연결해둔 서비스를 확인 할 수 있다.