Dubbo 优雅停机 restart 脚本

优雅停机

• 使用 kill -9 pid 不能优雅停机
• 使用 kill pid 可以优雅停机

停机脚本

restart.sh

#!/usr/bin/env bash

export LANG=en_US.UTF-8
export JAVA_HOME=/usr/java/jdk1.8.0_144
export PATH=$PATH:$JAVA_HOME/bin
export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar:$CLASSPATH

cd `dirname $0`
CURRENT_DIR=`pwd`
LOGS_DIR=$CURRENT_DIR/logs
STDOUT_FILE=$CURRENT_DIR/logs/stdout.log
PROJECT_HOME=$CURRENT_DIR/project
JAR_FILE=$PROJECT_HOME/dubbo-provider.jar

# pid
PIDS=`ps -ef | grep java | grep -v grep | grep "$JAR_FILE" | awk '{print $2}'`

# Graceful shutdown
function gracefulShutdown(){
    if [ -z "$PIDS" ]; then
        echo "[$(date '+%Y-%m-%d %H:%M:%S')] $JAR_FILE does not started!" | tee -a $STDOUT_FILE
    else
        echo "[$(date '+%Y-%m-%d %H:%M:%S')] $JAR_FILE kill $PIDS begining" | tee -a $STDOUT_FILE
        for PID in $PIDS ; do
            kill $PID > /dev/null 2>&1
            echo "[$(date '+%Y-%m-%d %H:%M:%S')] $JAR_FILE kill $PID success" | tee -a $STDOUT_FILE
        done

        # check for graceful shutdown
        COUNT=0
        while [ $COUNT -lt 1 ]; do
            sleep 1
            COUNT=1
            for PID in $PIDS ; do
                PID_EXIST=`ps -f -p $PID | grep java`
                if [ -n "$PID_EXIST" ]; then
                    COUNT=0
                    break
                fi
            done
        done
    fi
}

function operate(){
    if [[ "$1" = "kill" ]]; then
        gracefulShutdown
    elif [[ "$1" = "start" ]] ; then
        cd $PROJECT_HOME
        # starting
        nohup $JAVA_HOME/bin/java -server -Xms1g -Xmx1g -Xss256k -Dloader.path=$PROJECT_HOME/lib/ -Djava.io.tmpdir=$LOGS_DIR -XX:+DisableExplicitGC -XX:+UseConcMarkSweepGC -XX:+CMSParallelRemarkEnabled -XX:LargePageSizeInBytes=128m -XX:+UseFastAccessorMethods -XX:+UseCMSInitiatingOccupancyOnly -XX:CMSInitiatingOccupancyFraction=70 -XX:+HeapDumpOnOutOfMemoryError -XX:HeapDumpPath=$LOGS_DIR/$PIDS.hprof -Ddubbo.protocol.port=20882 -Dspring.profiles.active=pro -jar $JAR_FILE >> $STDOUT_FILE 2>&1 &
        PIDS=`ps -ef | grep java | grep -v grep | grep "$JAR_FILE" | awk '{print $2}'`
        echo "[$(date '+%Y-%m-%d %H:%M:%S')] $JAR_FILE started OK! pid: $PIDS" | tee -a $STDOUT_FILE
    else
        echo "[$(date '+%Y-%m-%d %H:%M:%S')] $JAR_FILE is not support $1" | tee -a $STDOUT_FILE
    fi
}

if [[ "$1" = "start" || "$1" = "check" ]]; then
    if [ -n "$PIDS" ]; then
        echo "[$(date '+%Y-%m-%d %H:%M:%S')] $JAR_FILE already started! pid: $PIDS" >> $STDOUT_FILE
        exit 1
    fi
    operate start
elif [[ "$1" = "" || "$1" = "restart" ]]; then
    operate kill
    echo "[$(date '+%Y-%m-%d %H:%M:%S')] $JAR_FILE starting" | tee -a $STDOUT_FILE
    operate start
elif [[ "$1" = "kill" ]]; then
    operate kill
else
    echo "[$(date '+%Y-%m-%d %H:%M:%S')] $JAR_FILE is not support $1" | tee -a $STDOUT_FILE
fi

使用说明

sh restart.sh start # 启动
sh restart.sh # 重启
sh restart.sh restart # 重启
sh restart.sh check # 检测服务是否启动，没有启动，则启动之，否则不做其他操作
sh restart.sh kill # kill 掉已启动的服务进程