我有一段清除數(shù)據(jù)庫日志的腳用來按月清除數(shù)據(jù)庫中的日志文件然后再把它們按月分表存儲(chǔ)，腳本平時(shí)運(yùn)行正常但是每到月初一定會(huì)報(bào)一次‘MySQL server has gone away’這樣的錯(cuò)，不知道為什么！

腳本代碼如下：

class PaizuTableHandler extends ScriptBase

{

public static $mysql = null;

const LOG_PAIZU_TABLE = 'log_user_paiju';

public function logic()

{

if(empty(self::$mysql)){

self::$mysql = $this->mysql('logs');

}

set_time_limit(0);

while (true)

{

$date = date("Y-m-d");

$dataTime = strtotime($date);

$timestampStart = $dataTime - 3600*24; //昨天

$timestampEnd = mktime(0,0,0,date("m"),1,date("Y"));//本月月初 例如：2017-07-01 00:00:00

$timestampEnd_lastmoth = mktime(0, 0 , 0,date("m")-1,1,date("Y"));//上月月初 例如：2017-06-01 00:00:00

$transferLastMonth = mktime(0,0,0,date("m"),5,date("Y")); //月初第5天(轉(zhuǎn)移上月數(shù)據(jù))

if($timestampStart < $timestampEnd){

sleep(60);

continue;

}

$table = self::LOG_PAIZU_TABLE.'_'.date("Ym");//本月的表

$lastMothTable = self::LOG_PAIZU_TABLE.'_'.date("Ym",mktime(0, 0 , 0,date("m")-1,1,date("Y")));//上個(gè)月的表

$hasTable = self::$mysql->tableExists($table); //判斷是否有本月的表

$hasTableLast = self::$mysql->tableExists($lastMothTable); //判斷是否有上個(gè)月的表

$createFlag = $hasTable ? true : false; //本月的表是否存在

$createFlagLast = $hasTableLast ? true : false; //上個(gè)月的表是否存在

if( empty( $createFlag ) ){

try {

//創(chuàng)建表

$createSql = "CREATE TABLE {$table} LIKE log_user_paiju";

$ret = self::$mysql->query($createSql);

if(!$ret){

//拋出異常

$errorMessage = self::$mysql -> error_no() . ": " . self::$mysql ->error();

throw new Exception($errorMessage);

}

} catch(Exception $ex) {

echo 'TIME:'.date("Y-m-d H:i:s")."\n";

echo 'TIME_START~TIME_END:'.date("Y-m-d H:i:s",$timestampStart)."~".date("Y-m-d H:i:s",$timestampEnd)."\n";

$msg = 'Error:'.$ex->getMessage()."\n";

$msg.= $ex->getTraceAsString()."\n";

$msg.= '異常行號(hào)：'.$ex->getLine()."\n";

$msg.= '所在文件：'.$ex->getFile()."\n";

//將異常信息記錄到日志中PHP異常處理之

echo $msg;

echo "\n";

break;

}

}

if( $createFlag ){

try {

//查詢本月當(dāng)天應(yīng)清空數(shù)據(jù)有沒有清空

$sql = "select * from log_user_paiju where UNIX_TIMESTAMP(`time`) between {$timestampEnd} and {$timestampStart} order by `time` desc limit 100";

$result = self::$mysql->query($sql);

$rs = self::$mysql -> fetch_row($result);

if( !$result ){

//拋出異常

$errorMessage = self::$mysql -> error_no() . ": " . self::$mysql ->error();

throw new Exception($errorMessage);

}

//處理上月數(shù)據(jù)(本月第5天把 上個(gè)月的數(shù)據(jù)全部放到上個(gè)月的表中(要放最少2天前))

$last_rs = array();

if($dataTime == $transferLastMonth && !empty( $createFlagLast ) && empty($rs)){

$last_sql = "select * from log_user_paiju where UNIX_TIMESTAMP(`time`) between {$timestampEnd_lastmoth} and {$timestampEnd} order by `time` desc limit 100";

$last_sql1 = "INSERT INTO {$lastMothTable}(uid,paiju_score,paizu_score,`time`,paizu_id,seq,room_id,server_id,creator,`status`,mahjongType,cid) SELECT uid,paiju_score,paizu_score,`time`,paizu_id,seq,room_id,server_id,creator,`status`,mahjongType,cid FROM log_user_paiju where UNIX_TIMESTAMP(`time`) between {$timestampEnd_lastmoth} and {$timestampEnd} order by `time` desc limit 100";

$last_sql2 = "delete from log_user_paiju where UNIX_TIMESTAMP(`time`) between {$timestampEnd_lastmoth} and {$timestampEnd} order by `time` desc limit 100";

$result1 = self::$mysql->query($last_sql);

//var_dump($result1);

if(!$result1){

//拋出異常

$errorMessage = self::$mysql -> error_no() . ": " . self::$mysql ->error();

throw new Exception($errorMessage);

}

$last_rs = self::$mysql -> fetch_row($result1);

if($last_rs){

if($r = self::$mysql->query($last_sql1)){

self::$mysql->query($last_sql2);

}else{

//拋出異常

$errorMessage = self::$mysql -> error_no() . ": " . self::$mysql ->error();

throw new Exception($errorMessage);

}

}

}

//處理本月數(shù)據(jù)

$sql1 = "INSERT INTO {$table}(uid,paiju_score,paizu_score,`time`,paizu_id,seq,room_id,server_id,creator,`status`,mahjongType,cid) SELECT uid,paiju_score,paizu_score,`time`,paizu_id,seq,room_id,server_id,creator,`status`,mahjongType ,cid FROM log_user_paiju where UNIX_TIMESTAMP(`time`) between {$timestampEnd} and {$timestampStart} order by `time` desc limit 100";

$sql2 = "delete from log_user_paiju where UNIX_TIMESTAMP(`time`) between {$timestampEnd} and {$timestampStart} order by `time` desc limit 100";

if(empty($rs) && empty($last_rs)){

sleep(60);

}

if($rs){

if($r1=self::$mysql->query($sql1)){

!self::$mysql->query($sql2);

}else{

//拋出異常

$errorMessage = self::$mysql -> error_no() . ": " . self::$mysql ->error();

throw new Exception($errorMessage);

}

}

} catch(Exception $ex) {

echo 'TIME:'.date("Y-m-d H:i:s")."\n";

echo 'TIME_START~TIME_END:'.date("Y-m-d H:i:s",$timestampStart)."~".date("Y-m-d H:i:s",$timestampEnd)."\n";

$msg = 'Error:'.$ex->getMessage()."\n";

$msg.= $ex->getTraceAsString()."\n";

$msg.= '異常行號(hào)：'.$ex->getLine()."\n";

$msg.= '所在文件：'.$ex->getFile()."\n";

//將異常信息記錄到日志中PHP異常處理之

echo $msg;

echo "\n";

break;

}

}

usleep(3000);

}

}

}

shell腳本如下：

#!/bin/sh

# scripts daemon, add to /etc/crontab

# */1 * * * * root PATH/script.sh --daemon

# run on root

if [ "$(uname -s|grep -F 'CYGWIN')" = "" ] && [ $UID -ne 0 ]; then

echo "superuser privileges are required to run this script."

exit 1

fi

# settings

PHP_CLI="/usr/bin/php -c /usr/local/php/etc/php.ini"

SCRIPTS="PaijuLogHandler PaijuTableHandler PaizuTableHandler ClubDiamondLogHandler"

# paths

BASE_PATH=$(cd $(dirname $0) && pwd)

BASE_SCRIPT="$BASE_PATH/script.php"

LOGS_PATH="$BASE_PATH/data/logs/bash.log"

USAGE="Usage: $(basename $0) [-d|-a|-k SCRIPT]\n\

-d, --daemon\t\tthe daemon mode, runing checking\n\

-a, --killall\t\tkill the all scripts\n\

-k, --kill SCRIPT\tkill the SCRIPT\n\

-h, --help\t\tthis help text"

function get_pid()

{

echo $(ps -ef|grep -F "$1"|grep -v "grep"|awk '{print $2}')

}

function kill_script()

{

PID=$(get_pid "$1")

if [ "$PID" = "" ]; then

echo "$1 not found"

else

kill -9 $PID

echo "$1 has been killed, pid: $PID"

fi

}

case $1 in

-k|--kill)

if [ "$2" = "" ]; then

echo -e $USAGE

exit 0

fi

kill_script "$BASE_SCRIPT request/$2"

;;

-a|--killall)

for SCRIPT in $SCRIPTS; do

kill_script "$BASE_SCRIPT request/$SCRIPT"

done

;;

-d|--daemon)

for SCRIPT in $SCRIPTS; do

SCRIPT="$BASE_SCRIPT request/$SCRIPT"

PID=$(get_pid "$SCRIPT")

if [ "$PID" = "" ]; then

eval "$PHP_CLI $SCRIPT >>/data/logs/scriptlog/log.txt 2>&1 &"

PID=$(get_pid "$SCRIPT")

echo "[$(date +%Y-%m-%d\ %H:%M:%S)] $SCRIPT has been down, restarted: $PID" >> $LOGS_PATH

fi

done

;;

*)

echo -e $USAGE

;;

esac

報(bào)錯(cuò)如下：

TIME:2018-02-02 00:00:48

Error:2006: MySQL server has gone away

總結(jié)

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