您现在的位置是：首页 >技术教程 >Linux守护进程启动进程健康监测进程网站首页技术教程

#!/bin/bash
 
# 应用名
APP_NAME=smart_school-boot
 
# 应用端口
APP_PORT=17206
 
# 应用健康检查URL
HEALTH_CHECK_URL=http://127.0.0.1:${APP_PORT}/smart-school/doc.html
 
# jar所在的根目录
APP_HOME=/home/edu/edupkg/jar/${APP_NAME} 
 
# jar的绝对路径
JARNAME=jeecg-boot-module-system-3.2.0.jar
JAR_NAME=${APP_HOME}/${JARNAME}
 
#应用的启动日志
JAVA_OUT=${APP_HOME}/logs/start_${APP_NAME}_$(date "+%Y-%m-%d-%H").log
echo logfile=$JAVA_OUT

#
PID_OUT==${APP_HOME}/${APP_NAME}_${APP_PORT}_pid
 
PROG_NAME=$0
ACTION=$1
APP_START_TIMEOUT=20    # 等待应用启动的时间
 
# 创建出相关目录
mkdir -p ${APP_HOME}
mkdir -p ${APP_HOME}/logs
usage() {
    echo "Usage: $PROG_NAME { start | stop | restart | status | pid | health | guard | help }"
    exit 2
}
process_check(){
        P_PID=-1
        pid=$(ps -ef | grep ${APP_NAME} | grep ${JARNAME} | grep -v grep | grep -v crontab | grep -v monitor | awk '{print $2}')
        echo "${APP_NAME} ${JARNAME} pid is [${pid}]"
        if [ ! -n "$pid" ]; then
                #echo $pid
                echo "查找" ${APP_NAME}  ${JARNAME} "进程没有找到！！！返回-1"
                pid=-1
        fi
        #echo $pid 
        P_PID=$pid
        P_PID_COUNT=0
        P_PID_COUNT=$(ps -ef | grep ${APP_NAME} | grep  ${JARNAME} | grep -v grep | grep -v crontab | grep -v monitor | awk '{print $2}'| wc -l)
        echo "${APP_NAME} ${JARNAME} pid count = [${P_PID_COUNT}]"
        if [ $P_PID_COUNT -eq 0 ]; then
                echo "查找" ${APP_NAME}  ${JARNAME} "进程数量为"$P_PID_COUNT"！！！"
        fi
}
# 进程守卫
process_guard(){
        process_check
        if [ $P_PID_COUNT -eq 0 ]; then
                echo "查找" ${APP_NAME}  ${JARNAME} "进程数量为"$P_PID_COUNT"！！！,现在立即启动进程。。。请稍后。。。"
                start
                sleep 5
                echo "启动完毕，再次检查进程。。。"
                process_check           
        fi
        if [ $P_PID_COUNT -gt 0 ]; then
                echo "running 进程运行中，无需再次启动. pid=${P_PID} pid_count=${P_PID_COUNT}"
        fi

}
#健康检查 
health_check() {
    #sleep 60
    exptime=0
    echo "checking ${HEALTH_CHECK_URL}"
    while true
        do
            status_code=`/usr/bin/curl -L -o /dev/null --connect-timeout 5 -s -w %{http_code}  ${HEALTH_CHECK_URL}`
            if [ "$?" != "0" ]; then
               echo -n -e "
application not started"
            else
                echo "code is $status_code"
                if [ "$status_code" == "200" ];then
                    break
                fi
            fi
            sleep 1
            ((exptime++))
 
            echo -e "
Wait app to pass health check: $exptime..."
 
            if [ $exptime -gt ${APP_START_TIMEOUT} ]; then
                echo '[ERROR] [failed] app start failed'
               exit 1
            fi
        done
    echo "[OK] [success] check ${HEALTH_CHECK_URL} success"
}
#启动应用
start_application() {
    echo "starting java process"
    nohup java -jar ${JAR_NAME} > ${JAVA_OUT} 2>&1 &
    echo "started java process"
}
#停止应用 
stop_application() {
   checkjavapid=`ps -ef | grep java | grep ${APP_NAME} | grep -v grep |grep -v 'deploy.sh'| awk '{print$2}'`
   
   if [[ ! $checkjavapid ]];then
      echo -e "
no java process"
      return
   fi
 
   echo "stop java process"
   times=60
   for e in $(seq 60)
   do
        sleep 1
        COSTTIME=$(($times - $e ))
        checkjavapid=`ps -ef | grep java | grep ${APP_NAME} | grep -v grep |grep -v 'deploy.sh'| awk '{print$2}'`
        if [[ $checkjavapid ]];then
            kill -9 $checkjavapid
            echo -e  "
        -- stopping java lasts `expr $COSTTIME` seconds."
        else
            echo -e "
java process has exited"
            break;
        fi
   done
   echo ""
}
#启动
start() {
    start_application
    echo -e "please wait...health checking..."
    #sleep 45
    #health_check
    process_check
}
#停止
stop() {
    stop_application
    process_check
}
#命令分流
case "$ACTION" in
    status)
        health_check
    ;;
    pid)
        process_check
    ;;
    guard)
        process_guard
    ;;
    start)
        start
    ;;
    stop)
        stop
    ;;
    restart)
        stop
        start
    ;;
    health)
        health_check
    ;;
    help)
        usage
    ;;
    *)
        usage
    ;;
esac

文件名：start.sh

参数说明：

# 应用名（查进程关键字）： APP_NAME=smart_school-boot 
# 应用端口（健康监测用）： APP_PORT=17206
 # 应用健康检查URL（健康检查）：HEALTH_CHECK_URL=http://127.0.0.1:${APP_PORT}/smart-school/doc.html
 # jar的绝对路径（进程检查）：JARNAME=jeecg-boot-module-system-3.2.0.jar

使用方法：

启动： ./start.sh start

停止： ./start.sh stop

重启：./start.sh restart

健康监测：./start.sh  health

进程监测：./start.sh pid

进程守卫(守护)：./start.sh guard

帮助：./start.sh help