serve jmx Prometheus metrics on 12345 port

Author: bondiano

Dockerfile

@@ -13,6 +13,7 @@ RUN lein uberjar
 FROM eclipse-temurin:20-jdk
 
 RUN mkdir -p /opt/jmx_exporter
+RUN wget -O /opt/jmx_exporter/jmx_prometheus_httpserver-0.19.0.jar https://repo1.maven.org/maven2/io/prometheus/jmx/jmx_prometheus_httpserver/0.19.0/jmx_prometheus_httpserver-0.19.0.jar
 RUN wget -O /opt/jmx_exporter/jmx_prometheus_javaagent-0.16.1.jar https://repo1.maven.org/maven2/io/prometheus/jmx/jmx_prometheus_javaagent/0.16.1/jmx_prometheus_javaagent-0.16.1.jar
 COPY jmx-config.yaml /opt/jmx_exporter/config.yaml
 
@@ -24,5 +25,6 @@ COPY config.edn /service/config.edn
 COPY --from=builder /build/target/app.jar /service/app.jar
 
 EXPOSE 4201
+EXPOSE 12345
 
 ENTRYPOINT ["./service/entrypoint.sh"]

entrypoint.sh

@@ -31,6 +31,7 @@ JMX_OPTS="-javaagent:/opt/jmx_exporter/jmx_prometheus_javaagent-0.16.1.jar=8080:
 # JVM options
 JAVA_OPTS="-XX:InitialRAMPercentage=30 -XX:MaxRAMPercentage=85 -XX:+UseContainerSupport -XshowSettings:system "
 
+java $JAVA_OPTS -jar /opt/jmx_exporter/jmx_prometheus_httpserver-0.19.0.jar 12345 /opt/jmx_exporter/config.yaml &
 java $JMX_OPTS \
   $JAVA_OPTS \
   -jar $JAR_PATH "$@"

jmx-config.yaml

@@ -1,2 +1,3 @@
+hostPort: 0.0.0.0:9999
 rules:
   - pattern: ".*"