linux 服务管理

修改主要是针对restart功能

原来的restart，会在stop的时候，相关的服务并没有真正的停止，所以才进行了如下的修改。

#!/bin/sh
#
# *_app program
# chkconfig: 345 86 31
# description: *_app is a essential part of *


PID_PREFIX='/usr/local/*/app/run'
BIN_PREFIX='/usr/local/*/app/sbin'

SUPERVISOR_SERVER="/usr/local/*/app/engine/bin/supervisord" ;
SUPERVISOR_CONFIG="/usr/local/*/app/conf/supervisord.ini" ;
SUPERVISOR_PID="/usr/local/*/app/run/supervisord.pid" ;


PROCESS_LIST="authenticator rulefilter receiver dispatcher sizequerier proxy_monitor"

###########################################################
# Start operate

start() {
    for name in $PROCESS_LIST; do

        # check already running
        PID_FILE="$PID_PREFIX/$name.pid"
        if [ -f $PID_FILE ]; then
            PID=`cat $PID_FILE` ;
            if ps ax | grep $name | grep -v 'grep' | grep $PID &> /dev/null; then
                echo "$name: started" ;
                continue ;
            fi
        fi

        # start program
        $BIN_PREFIX/$name start;
        if [ ! $? -eq 0 ]; then
            echo "$name: start failure" ;
            continue ;
        fi
    done
    return 0 ;
}


###########################################################
# Stop operate

stop_supervisor() {

    # check supervisor already stop
    if [ ! -f $SUPERVISOR_PID ]; then
        return 0 ;
    fi
    PID=`cat $SUPERVISOR_PID` ;
    if ! ps ax | grep supervisord | grep -v 'grep' | grep $PID &> /dev/null; then
        return 0 ;
    fi

    # stop supervisor
    kill `cat $SUPERVISOR_PID` ;
    sleep 0.5 ;
    if [ -f $SUPERVISOR_PID ]; then
        return 1 ;
    else
        return 0
    fi
}

check_app_stop() {
    _VAL=0 ;
    for name in $PROCESS_LIST; do
        PID_FILE="$PID_PREFIX/$name.pid";

        # check pid file is exist
        if [ ! -f $PID_FILE ]; then
            echo "$name: stopped" ;
            continue ;
        fi

        # check pid is valid
        PID=`cat $PID_FILE` ;
        if ps ax | grep $name | grep -v 'grep' | grep $PID &> /dev/null; then
            echo "Error: app $name stop failure" ;
            _VAL=2 ;
        else
            echo "$name: stopped" ;
        fi
    done
    return $_VAL ;
}

stop() {

    # check supervisor already stop
    if [ ! -f $SUPERVISOR_PID ]; then
        echo "all stopped" ;
        return 0 ;
    fi

    # stop supervisor
    stop_supervisor ;
    if [ ! $? -eq 0 ]; then
        return 1 ;
    fi

    # check app stop
    check_app_stop ;
    return $? ;
}


###########################################################
# Restart operate

restart() {

    stop;
    sleep 5;
    stop_supervisor;

    # check supervisor
    if [ -f $SUPERVISOR_PID ]; then
        if ps ax|grep 'supervisord'|grep -v 'grep' &>/dev/null; then
            kill `cat $SUPERVISOR_PID`;
        else
            rm -rf $SUPERVISOR_PID;
        fi
    else
        if ps ax|grep 'supervisord'|grep -v 'grep' &>/dev/null; then
            kill `ps ax|grep 'supervisord'|grep -v 'grep'|awk '{print $1}'`
        fi
    fi

    sleep 3;

    #kill pid process
    for pid in `ps ax|grep 'python'|grep -v 'grep'|grep '*/app/repo'|awk '{print $1}'`; do
        kill $pid
    done

    sleep 2;

    #clean pid file
    cd $PID_PREFIX
    if ls $PID_PREFIX/*.pid &> /dev/null; then
        rm -f $PID_PREFIX/*.pid
    fi


    start;
    return 0 ;
}


###########################################################
# Status operate

status() {

    # check supervisor running
    if [ ! -f $SUPERVISOR_PID ]; then
        echo "all stopped" ;
        return 1 ;
    fi

    # check app program status
    _VAL=0 ;
    for name in $PROCESS_LIST; do
        $BIN_PREFIX/$name status;
        if [ ! $? -eq 0 ]; then
            _VAL=1 ;
        fi
    done
    return $_VAL ;
}


###########################################################
# call program

_RET_VAL=0
case "$1" in
    start)
        start ;
        _RET_VAL=$? ;
        ;;
    stop)
        stop ;
        _RET_VAL=$? ;
        ;;
    restart)
        restart ;
        _RET_VAL=$? ;
        ;;
    status)
        status ;
        _RET_VAL=$? ;
        ;;
    *)
        echo "Usage: $basename {start|stop|restart|status}" ;
        _RET_VAL=1
        ;;
esac

exit $_RET_VAL