From 80b13f2893aba70acb19ae77420a21c7d450fcc2 Mon Sep 17 00:00:00 2001
From: dykim <gomdobi@gmail.com>
Date: Tue, 9 Dec 2025 10:43:50 +0900
Subject: [PATCH] =?UTF-8?q?JVM=20=EC=98=B5=EC=85=98=20=EC=A0=95=EB=A6=AC?=
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---
 Dockerfile | 19 +++++++++++++------
 1 file changed, 13 insertions(+), 6 deletions(-)

diff --git a/Dockerfile b/Dockerfile
index 79638a2..2834d48 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -7,7 +7,7 @@ RUN apk add --no-cache curl && \
       https://github.com/open-telemetry/opentelemetry-java-instrumentation/releases/download/v${OTEL_VERSION}/opentelemetry-javaagent.jar \
       -o /opentelemetry-javaagent.jar
 
-# 2단계: Tomcat 이미지 (Java 8 기준, Java 17 쓸 거면 jdk17-temurin 그대로 사용)
+# 2단계: Tomcat 이미지 (Java 8 기준)
 FROM tomcat:9.0-jdk8-temurin
 
 ENV TZ=Asia/Seoul \
@@ -15,23 +15,30 @@ ENV TZ=Asia/Seoul \
     OTEL_EXPORTER_OTLP_ENDPOINT=http://192.168.100.203:4317 \
     OTEL_EXPORTER_OTLP_PROTOCOL=grpc \
     OTEL_RESOURCE_ATTRIBUTES="deployment.environment=prod" \
-    JAVA_TOOL_OPTIONS="-javaagent:/opt/opentelemetry-javaagent.jar"
+    JAVA_TOOL_OPTIONS="\
+-Xms1g \
+-Xmx1g \
+-XX:+UseG1GC \
+-XX:MaxGCPauseMillis=200 \
+-XX:+UnlockExperimentalVMOptions \
+-XX:+UseStringDeduplication \
+-XX:+HeapDumpOnOutOfMemoryError \
+-XX:HeapDumpPath=/tmp \
+-XX:+DisableExplicitGC \
+-javaagent:/opt/opentelemetry-javaagent.jar"
 
 # 타임존 설정
 RUN ln -sf /usr/share/zoneinfo/Asia/Seoul /etc/localtime
 
 # OTEL 에이전트 복사
 COPY --from=otel /opentelemetry-javaagent.jar /opt/opentelemetry-javaagent.jar
-# OTEL 1000:1000 으로 구동 가능 하도록 처리
 RUN chown 1000:1000 /opt/opentelemetry-javaagent.jar
 
-# 🔽 기본 웹앱 정리
+# 기본 웹앱 정리
 RUN rm -rf /usr/local/tomcat/webapps/*
 
 # Maven 빌드된 WAR 복사
-# Maven 빌드 결과 파일명에 맞게 수정
 COPY target/sayit-helpdesk.war /usr/local/tomcat/webapps/ROOT.war
-# TOMCAT 구동전 톰캣은 1000:1000 으로 구동 할 수 있도록 조정
 RUN chown -R 1000:1000 /usr/local/tomcat/
 
 EXPOSE 8080