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java應(yīng)用啟動(dòng)與停止的shell腳本分享

更新時(shí)間：2023年10月23日 08:08:03 作者：技術(shù)驛站

這篇文章主要和大家分享三個(gè)shell腳本,分別是jvm啟動(dòng)參數(shù)相關(guān)的setjvment.sh,利用java命令啟動(dòng)進(jìn)程的start.sh和停止java進(jìn)程的stop.sh,有需要的可以參考下

整體思路

基于shell腳本開發(fā)3個(gè)腳本，分別是

jvm啟動(dòng)參數(shù)相關(guān)的setjvment.sh，主要是jvm啟動(dòng)相關(guān)參數(shù)配置
start.sh，主要是利用java命令啟動(dòng)進(jìn)程，包含classpath和執(zhí)行結(jié)果日志保存相關(guān)設(shè)置
stop.sh,主要是停止java進(jìn)程，包括優(yōu)雅停止和強(qiáng)制停止

如果linux沒有安裝jdk，可使用如下命令安裝jdk：

sudo apt update
sudo apt install openjdk-8-jdk

然后在啟動(dòng)的文件.bash_profile中設(shè)置環(huán)境變量JAVA_HOME,

#!/bin/sh
export JAVA_HOME=/usr/lib/jvm/java-8-openjdk-amd64

相關(guān)腳本

setjvm

#!/bin/bash

# 設(shè)置Java堆棧大小
JAVA_OPTS="$JAVA_OPTS -Xmn512m -Xms512m -Xmx1024m -XX:MetaspaceSize=64m -XX:MaxMetaspaceSize=256m"
JAVA_OPTS="$JAVA_OPTS -XX:SurvivorRatio=8 -XX:MaxTenuringThreshold=8 -XX:-UseAdaptiveSizePolicy"
# 垃圾收集器設(shè)置
JAVA_OPTS="$JAVA_OPTS -XX:+UseParNewGC -XX:+UseConcMarkSweepGC -XX:+CMSParallelRemarkEnabled -XX:CMSInitiatingOccupancyFraction=60"
JAVA_OPTS="$JAVA_OPTS -XX:+CMSClassUnloadingEnabled"
# 打印GC日志
JAVA_OPTS="$JAVA_OPTS -XX:+PrintGCDetails -XX:+PrintGCDateStamps -XX:+PrintGCTimeStamps -XX:+PrintGCApplicationStoppedTime -XX:+UseGCLogFileRotation"
JAVA_OPTS="$JAVA_OPTS -XX:+PrintHeapAtGC -Xloggc:$work_home/logs/gc.log -XX:GCLogFileSize=1m -XX:NumberOfGCLogFiles=10"
# 打印DUMP日志
JAVA_OPTS="$JAVA_OPTS -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=$work_home/logs"
# 其他設(shè)置
JAVA_OPTS="$JAVA_OPTS -XX:+DisableExplicitGC  -XX:+UseFastAccessorMethods -XX:-UseBiasedLocking"
# 指定隨機(jī)數(shù)生成器的種子源
JAVA_OPTS="$JAVA_OPTS -Djava.security.egd=file:/dev/urandom"
# 設(shè)置java.ext.dirs
JAVA_OPTS="$JAVA_OPTS -Djava.ext.dirs=$JAVA_HOME/jre/lib/ext:$work_home/lib"
# 其他環(huán)境變量或配置設(shè)置
# export OTHER_ENV_VARIABLE=example_value

start

#!/bin/bash

CUR="$0"

while [ -h "$CUR" ]; do
  ls=$(ls -ld "$CUR")
  link=$(expr "$ls" : '.-> (.)$')
  if expr "$link" : '/.*' >/dev/null; then
    CUR="$link"
  else
    CUR=$(dirname "$CUR")/"$link"
  fi
done

CUR_DIR=$(dirname "$CUR")

work_home=$(
  cd "$CUR_DIR/.." >/dev/null
  pwd
)

if [ -z $JAVA_HOME ]; then
  echo "plz set JAVA_HOME env."
  exit 1
fi

if [ -r "$work_home/bin/setenv.sh" ]; then
  . "$work_home/bin/setjvmenv.sh"
fi

CLASSPATH=$CLASSPATH:$work_home/lib/conf
LOG_DIR="$work_home/logs"

if [ ! -d $LOG_DIR ]; then
  mkdir "$LOG_DIR"
fi

main_class="com.toby.dynamic.data.source.start.PointApplication"
count=`ps -ef|grep java|grep $work_home|grep $main_class|grep -v grep|wc -l`
if [ $count != 0 ]; then
  app_id=`ps -ef|grep java|grep $work_home|grep $main_class|grep -v grep|awk '{print $2}'`
  echo "already running with pid $app_id, start aborted."
else
  echo "use java_home $JAVA_HOME"
  echo "use work_home $work_home"

  exec $JAVA_HOME/bin/java $JAVA_OPTS -cp $CLASSPATH \
  -Dwork.home=$work_home -Djava.io.tmpdir=$work_home \
  $main_class >$LOG_DIR/server.log 2>&1 &

  echo "server started."
fi

stop

#!/bin/bash

PRG="$0"
while [ -h "$PRG" ]; do
  ls=$(ls -ld "$PRG")
  link=$(expr "$ls" : '.-> (.)$')
  if expr "$link" : '/.*' >/dev/null; then
    PRG="$link"
  else
    PRG=$(dirname "$PRG")/"$link"
  fi
done

PRGDIR=$(dirname "$PRG")

work_home=$(
  cd "$PRGDIR/.." >/dev/null
  pwd
)

main_class="com.toby.dynamic.data.source.start.PointApplication"
count=`ps -ef|grep java|grep $work_home|grep $main_class|grep -v grep|wc -l`
echo " stop server start."
if [ $count == 0 ]; then
  echo "already stop,return."
  exit 0
fi

app_id=`ps -ef|grep java|grep $work_home|grep $main_class|grep -v grep|awk '{print $2}'`
# 請求優(yōu)雅退出
kill -15 $app_id
SLEEP=5
STOPPED=0

while [ $SLEEP -ge 0 ]; do
  count=`ps -ef|grep java|grep $work_home|grep $main_class|grep -v grep|wc -l`
  if [ $count == 0 ]; then
    STOPPED=1
    echo " server stopped."
    break;
  fi

  if [ $SLEEP -gt 0 ]; then
    sleep 1
  fi

  if [ $SLEEP -eq 0 ]; then
    echo "server did not stopped in time."
  fi
  SLEEP=`expr $SLEEP - 1 `
done

if [ $STOPPED -eq 0 ]; then
  echo "server killed fore"
  SLEEP=5
  kill -15 $app_id
  while [ $SLEEP -ge 0 ]; do
    count=`ps -ef|grep java|grep $work_home|grep $main_class|grep -v grep|wc -l`
    if [ $count == 0 ]; then
      STOPPED=1
      echo " server has been killed."
      break;
    fi

    if [ $SLEEP -gt 0 ]; then
      sleep 1
    fi

    if [ $SLEEP -eq 0 ]; then
      echo "server did not stopped in time."
    fi
    SLEEP=`expr $SLEEP - 1 `
  done
  if [ $STOPPED -eq 0 ]; then
    echo "server has not been killed completely yet."
  fi
fi