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  • linux服务脚本编写


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    #!/bin/bash
     
    ### BEGIN INIT INFO
    # Provides: 应用程序开发者
    # RequiRED-Start: $all
    # RequiRED-Stop: $all
    # Default-Start: 2 3 4 5
    # Default-Stop: 0 1 6
    # Short-Description: 简短应用程序描述
    # Description: 详细应用程序描述
    ### END INIT INFO
     
    # 程序文件目录
    ROOT="/work/code/cusflo-server-moon"
    # 程序文件
    APP="./dog/client_update_dog.py"
    # 程序配置文件
    CONFIG="./server_config.ini"
    # 服务日志
    DEFAULT_LOG_FILE='./daodaoliang.log'
     
    # 样式定制
    RED="\e[31m"
    GREEN="\e[32m"
    YELLOW="\e[33m"
    BLACK="\e[0m"
    POS="\e[60G"
     
    ok_msg() {
    echo -e "${1}${POS}${BLACK}[${GREEN} OK ${BLACK}]"
    }
     
    failed_msg() {
    echo -e "${1}${POS}${BLACK}[${RED}FAILED${BLACK}]"
    }
     
    # load process info of app
    # exist return 0
    # no exist return 1
    load_process_info() {
    # get pid
    app_pid=$(ps -ef|grep ${APP}|gawk '$0 !~/grep/ {print $2}' |tr -s ' ' ' ')
    # check pid again
    ps -p ${app_pid} >/dev/null 2>/dev/null
    ret=$?; if [[ 0 -ne $ret ]]; then error_msg="process $app_pid does not exists"; return 1; fi
    return 0;
    }
     
    start() {
    # if exists, exit.
    load_process_info
    if [[ 0 -eq $? ]]; then failed_msg "${APP} started(pid ${app_pid}), should not start it again."; return 0; fi
     
    # not exists, start server
    ok_msg "Starting ${APP}..."
     
    # get log file
    log_file=`cd ${ROOT} && cat ${CONFIG} |grep '^log_file'| awk '{print $2}'| awk -F ';' '{print $1}'`
    if [[ -z $log_file ]]; then log_file=${DEFAULT_LOG_FILE}; fi
    # get abs path
    log_dir=`dirname $log_file`
    log_file=`(cd ${ROOT} && cd $log_dir && pwd)`/`basename $log_file`
     
    # TODO: FIXME: set limit by, for instance, "ulimit -HSn 10000"
    if [[ -z $log_file ]]; then
    (cd ${ROOT};nohup python ${APP} >/dev/null 2>&1 &)
    else
    (cd ${ROOT};nohup python ${APP} >/dev.null >> $log_file 2>&1 &)
    fi
     
    # check again after start server
    for ((i = 0; i < 5; i++)); do
    # sleep a little while, for app may start then crash.
    sleep 0.1
    load_process_info
    ret=$?; if [[ 0 -ne $ret ]]; then
    failed_msg "${APP} start failed";
    failed_msg "see $log_file";
    return $ret;
    fi
    done
     
    # check whether started.
    load_process_info
    ret=$?; if [[ 0 -eq $? ]]; then ok_msg "${APP} started(pid ${app_pid})"; return 0; fi
     
    failed_msg "${APP} not started"
    return $ret
    }
     
    stop() {
    # not start, exit
    load_process_info
    if [[ 0 -ne $? ]]; then failed_msg "${APP} not start."; return 0; fi
     
    ok_msg "Stopping ${APP}(pid ${app_pid})..."
     
    # process exists, try to kill to stop normally
    for((i=0;i<30;i++)); do
    load_process_info
    if [[ 0 -eq $? ]]; then
    kill -s SIGTERM ${app_pid} 2>/dev/null
    ret=$?; if [[ 0 -ne $ret ]]; then failed_msg "send signal SIGTERM failed ret=$ret"; return $ret; fi
    sleep 0.1
    else
    ok_msg "${APP} stopped by SIGTERM"
    # delete the pid file when stop success.
    rm -f ${pid_file}
    break;
    fi
    done
     
    # process exists, use kill -9 to force to exit
    load_process_info
    if [[ 0 -eq $? ]]; then
    kill -s SIGKILL ${app_pid} 2>/dev/null
    ret=$?; if [[ 0 -ne $ret ]]; then failed_msg "send signal SIGKILL failed ret=$ret"; return $ret; fi
    ok_msg "${APP} stopped by SIGKILL"
    else
    # delete the pid file when stop success.
    rm -f ${pid_file}
    fi
     
    sleep 0.1
    return 0
    }
     
    # get the status of srs process
    # @return 0 if srs is running; otherwise, 1 for stopped.
    status() {
    load_process_info
    ret=$?; if [[ 0 -eq $ret ]]; then echo "${APP}(pid ${app_pid}) is running."; return 0; fi
     
    echo "${APP} is stopped, $error_msg"
    return 1
    }
     
    menu() {
    case "$1" in
    start)
    start
    ;;
    stop)
    stop
    ;;
    restart)
    stop
    start
    ;;
    status)
    status
    ;;
    *)
    echo "Usage: $0 {start|stop|status|restart}"
    return 1
    ;;
    esac
    }
     
    menu $1
     
    code=$?
    exit ${code}
     
     
     
     
    http://daodaoliang.com/linux%E5%AD%A6%E4%B9%A0/2015/02/04/linux%E5%AD%A6%E4%B9%A0-2015-02-04-%E6%9C%8D%E5%8A%A1%E8%84%9A%E6%9C%AC%E7%BC%96%E5%86%99/
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  • 原文地址:https://www.cnblogs.com/findumars/p/7003130.html
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