run 2 java process in DOCKERFILE

Question

我在kubertes中有一个ignite(grid -community) statfulset集群。我从下面的docker (cmd运行jmx导出器)成功创建了映像:

FROM gridgain/community:8.8.1-slim
USER root
RUN mkdir -p /opt/jmx_exporter/
COPY ./jmx/*  /opt/jmx_exporter/
RUN chmod 700 /opt/jmx_exporter/start.sh
CMD ["/bin/sh", "/opt/jmx_exporter/start.sh"]

但是当我从这个图像启动图表时，pod正在运行但尚未准备好:

NAME          READY   STATUS    RESTARTS   AGE
online-db-0   0/1     Running   3          4m2s

和in description:

Normal   Started    51s                kubelet, samppc01srv01kbr002.novalocal  Started container online-db
Warning  Unhealthy  12s (x3 over 32s)  kubelet, samppc01srv01kbr002.novalocal  Liveness probe failed: Get http://10.233.109.23:8080/ignite?cmd=version: dial tcp 10.233.109.23:8080: connect: connection refused
Normal   Killing    12s                kubelet, samppc01srv01kbr002.novalocal  Container online-db failed liveness probe, will be restarted
Warning  Unhealthy  9s (x3 over 29s)   kubelet, samppc01srv01kbr002.novalocal  Readiness probe failed: Get http://<IP>/ignite?cmd=probe: dial tcp <ip>:8080: connect: connection refused

当我检查pod时，我看到只有jmx是向上的，点燃java是向下的，当我在点燃容器上手动启动jmx时，它确实工作了:

bash-4.4# ps -ef | grep java
6 root      0:01 java -Djava.net.preferIPv4Stack=true -jar /opt/jmx_exporter/jmx_prometheus_httpserver-0.12.0-jar-with-dependencies.jar 5556 /opt/jmx_exporter/config.yml
26 root      0:00 grep java

start.sh - java_script

!/bin/sh
if [ -z "$SERVICE_PORT" ]; then

SERVICE_PORT=5556
fi

if [ -z "$JVM_OPTS" ]; then
JVM_OPTS="-Dcom.sun.management.jmxremote.ssl=false -Dcom.sun.management.jmxremote.authenticate=false -Dcom.sun.management.jmxremote.port=5555"
fi

if [ -z "$CONFIG_YML" ]; then
CONFIG_YML=/opt/jmx_exporter/config.yml
fi

VERSION=0.12.0

java $JVM_OPTS -jar /opt/jmx_exporter/jmx_prometheus_httpserver-$VERSION-jar-with-dependencies.jar $SERVICE_PORT $CONFIG_YML

日志中什么都没有，有人能帮助为什么会发生这种情况吗?

Answer 1

我创建了一个startall.sh脚本，它运行了ignite进程和jm脚本，如下所示:

#!/bin/sh
set -m

/opt/jmx_exporter/start.sh &
/bin/sh -c ${IGNITE_HOME}/run.sh

，然后编辑我的dockefile，只运行包装器脚本:

FROM gridgain/community:8.8.1-slim
USER root
RUN mkdir -p /opt/jmx_exporter/ 
COPY ./jmx/*  /opt/jmx_exporter/ 
RUN chmod 700 /opt/jmx_exporter/start.sh 
CMD ["/bin/sh", "/opt/jmx_exporter/startall.sh" ]