2014年9月

2014年9月30日

有时候不知道前路在何方,有时候不知道是否坚持错了方向,到现在我认为不论别人觉得是对还是错,只要自己觉得没有问题,那就勇敢的去做去拼,要无畏、无惧!不论成败,它都是你的一个经验,你失去的成本还可以从其他地方赚回来,但你失去的机会也许永远无法再得到。风险越大,回报越大!

DirectAdmin组件ZendGuardLoader探针显示不正常解决

DirectAdmin组件ZendGuardLoader,明明安装了探针却显示红叉叉,是因为一般是根据zend_loader.enable判断的,DA没加这些在php.ini,我们手动加上就好了

编辑php.ini,搜索:zend_extension,在底下加上

zend_loader.enable=1
zend_loader.disable_licensing=0
zend_loader.obfuscation_level_support=3
zend_loader.license_path=

然后 service httpd restart 重启下apache使修改生效
至于DirectAdmin PHP.INI的位置可以参考:http://www.cnweed.com/2743.html

Apache: (28)No space left on device: Couldn't create accept lock

[Sun Sep 21 17:37:10 2014] [emerg] (28)No space left on device: Couldn't create accept lock (/var/log/httpd/accept.lock.8411) (5)

下午收到监控邮件有台DirectAdmin服务器Apache服务无法启动,检查错误日记后,发现如上错误。首先df -h检查硬盘是否饱和,然后ipcs -s检查ipc,发现是ipc不足。如下所示

# ipcs -s 
------ Semaphore Arrays -------- 
key semid owner perms nsems 
0x00000000 19234816 apache 600 1 
0x00000000 19267585 apache 600 1 
0x00000000 19300354 apache 600 1 
0x00000000 19398659 apache 600 1 
0x00000000 19431428 apache 600 1 
0x00000000 19464197 apache 600 1 
0x00000000 19562502 apache 600 1
………………

执行如下命令清除然后重启Apache即可

ipcs -s | grep apache | perl -lane 'print `ipcrm sem $F[1]`'
service httpd restart

引起这个问题的原因可能是apache没有被正确的关闭。写了个简单的shell可以加入crontab定期执行

#!/bin/bash
rm -rf /var/log/weed/ipcs.log
ipcs -s >> /var/log/weed/ipcs.log
ipcslist=`grep -c "" /var/log/weed/ipcs.log`
if [ "$ipcslist" -ge "20" ]; then
ipcs -s | perl -ane '/^0x00000000/ && `ipcrm -s $F[1]`'
echo $(date) "Ipc crowded, clean up" >> /var/log/weed/ipcs_clean.log
fi

进程监控检查脚本-Nobody Check

#! /bin/bash
#====================================================================
# sys-mon.sh
#
# Copyright (c) 2011, WangYan <webmaster@wangyan.org>
# All rights reserved.
# Distributed under the GNU General Public License, version 3.0.
#
# Monitor system mem and load, if too high, restart some service.
#
# See: https://wangyan.org/blog/sys-mon-shell-script.html
#
# V 0.5, Date: 2011-12-08
#====================================================================
 
# Need to monitor the service name
# Must be in /etc/init.d folder exists
NAME_LIST="httpd nginx mysql"
 
# Single process to allow the maximum CPU (%)
PID_CPU_MAX="25"
 
# The maximum allowed memory (%)
PID_MEM_SUM_MAX="95"
 
# The maximum allowed system load
SYS_LOAD_MAX="6"
 
# Log path settings
LOG_PATH="/var/log/sys-mon.log"
 
# Date time format setting
DATA_TIME=$(date +"%y-%m-%d %H:%M:%S")
 
# Your email address
EMAIL="webmaster@example.com"
 
# Your website url
MY_URL="http://106.187.38.210/p.php"
 
#====================================================================
 
for NAME in $NAME_LIST
do
    PID_CPU_SUM="0";PID_MEM_SUM="0"
    PID_LIST=`ps aux | grep $NAME | grep -v root`
 
    IFS_TMP="$IFS";IFS=$'\n'
    for PID in $PID_LIST
    do
        PID_NUM=`echo $PID | awk '{print $2}'`
        PID_CPU=`echo $PID | awk '{print $3}'`
        PID_MEM=`echo $PID | awk '{print $4}'`
#       echo "$NAME: PID_NUM($PID_NUM) PID_CPU($PID_CPU) PID_MEM($PID_MEM)"
 
        PID_CPU_SUM=`echo "$PID_CPU_SUM + $PID_CPU" | bc`
        PID_MEM_SUM=`echo "$PID_MEM_SUM + $PID_MEM" | bc`
 
        if [ `echo "$PID_CPU >= $PID_CPU_MAX" | bc` -eq 1 ];then
            if [[ "$NAME" = "php-fpm" || "$NAME" = "httpd" ]];then
                sleep 5
                if [ `echo "$PID_CPU >= $PID_CPU_MAX" | bc` -eq 1 ];then
                    echo "${DATA_TIME}: kill ${NAME}($PID_NUM) successful (CPU:$PID_CPU)" | tee -a $LOG_PATH
                    kill $PID_NUM
                fi
            else
                echo "${DATA_TIME}: [WARNING!] ${NAME}($PID_NUM) cpu usage is too high! (CPU:$PID_CPU)" | tee -a $LOG_PATH
            fi
        fi
    done
    IFS="$IFS_TMP"
 
    SYS_LOAD=`uptime | awk '{print $(NF-2)}' | sed 's/,//'`
    SYS_MON="CPU:$PID_CPU_SUM MEM:$PID_MEM_SUM LOAD:$SYS_LOAD"
#   echo -e "$NAME: $SYS_MON\n"
 
    SYS_LOAD_TOO_HIGH=`awk 'BEGIN{print('$SYS_LOAD'>'$SYS_LOAD_MAX')}'`
    PID_MEM_SUM_TOO_HIGH=`awk 'BEGIN{print('$PID_MEM_SUM'>'$PID_MEM_SUM_MAX')}'`
 
    if [[ "$SYS_LOAD_TOO_HIGH" = "1" || "$PID_MEM_SUM_TOO_HIGH" = "1" ]];then
        /etc/init.d/$NAME stop
        sleep 5
        for ((i=1;i<4;i++))
        do
            if [ `pgrep $NAME | wc -l` = "0" ];then
                echo "$DATA_TIME: Stop $NAME successful! ($SYS_MON)" | tee -a $LOG_PATH
                break
            else
                echo "${DATA_TIME}: [WARNING!] Stop $NAME failed[$i]! ($SYS_MON)" | tee -a $LOG_PATH
                pkill $NAME && killall $NAME
            fi
        done
        /etc/init.d/$NAME start
        sleep 5
        for ((ii=1;ii<4;ii++))
        do
            if [ `pgrep $NAME | wc -l` != "0" ];then
                echo "$DATA_TIME: Start $NAME successful!" | tee -a $LOG_PATH
                break
            else
                echo "${DATA_TIME}: [WARNING!] Start $NAME failed[$ii]! ($SYS_MON)" | tee -a $LOG_PATH
                /etc/init.d/$NAME start
                sleep 5
            fi
        done
        if [ `pgrep $NAME | wc -l` != "0" ];then
            echo "${DATA_TIME}: [ERROR!] Start $NAME failed! ($SYS_MON)" | mail -s "Start $NAME failed" $EMAIL
        fi
    fi
done
 
STATUS_CODE=`curl -o /dev/null -s -w %{http_code} $MY_URL`
#echo -e "STATUS CODE: $STATUS_CODE\n"
 
if [ "$STATUS_CODE" != "200" ];then
    sleep 3
    STATUS_CODE=`curl -o /dev/null -s -w %{http_code} $MY_URL`
    if [ "$STATUS_CODE" != "200" ];then
        echo "${DATA_TIME}: [WARNING!] Website Downtime! ($SYS_MON)" | tee -a $LOG_PATH
        echo "${DATA_TIME}: [WARNING!] Website Downtime! ($SYS_MON)" | mail -s "Start $NAME failed" $EMAIL
    fi
fi

DirectAdmin Named服务启动失败与不稳定 - 命名错误

Named is not reloading correctly when I add a domain

On some systems, the named boot script provided with the bind rpms don't seem to reliably reload the named program. You can obtain a new named boot script by running the following:

RedHat:

cd /etc/init.d
mv named named.backup
wget -O named http://www.directadmin.com/named
chmod 755 named
/sbin/chkconfig named reset

This boot script uses a more direct method of reloading named.

其他操作系统请访问来源:http://help.directadmin.com/item.php?id=40

python脚本查找webshell

#!/usr/bin/env python
#-*- coding: utf-8 -*-
#=============================================================================
#     FileName:
#         Desc:
#       Author: 苦咖啡
#        Email: voilet@qq.com
#     HomePage: http://blog.kukafei520.net
#      Version: 0.0.1
#      History:
#=============================================================================

import os
import sys
import re
import smtplib

#设定邮件
fromaddr = "smtp.qq.com"
toaddrs = ["voilet@qq.com"]
username = "voilet"
password = "xxxxxx"

#设置白名单
pass_file = ["api_ucenter.php"]

#定义发送邮件函数
def sendmail(toaddrs,sub,content):
    '发送邮件模块'
    # Add the From: and To: headers at the start!
    msg = ("From: %s\r\nTo: %s\r\nSubject: %s\r\n\r\n"
           % (fromaddr, ", ".join(toaddrs), sub))
    msg += content
    server = smtplib.SMTP('mail.funshion.com', 25,)
    server.login(username, password)
    server.sendmail(fromaddr, toaddrs, msg)
    server.quit()

#设置搜索特征码
rulelist = [
    '(\$_(GET|POST|REQUEST)\[.{0,15}\]\(\$_(GET|POST|REQUEST)\[.{0,15}\]\))',
    '(base64_decode\([\'"][\w\+/=]{200,}[\'"]\))',
    'eval\(base64_decode\(',
    '(eval\(\$_(POST|GET|REQUEST)\[.{0,15}\]\))',
    '(assert\(\$_(POST|GET|REQUEST)\[.{0,15}\]\))',
    '(\$[\w_]{0,15}\(\$_(POST|GET|REQUEST)\[.{0,15}\]\))',
    '(wscript\.shell)',
    '(gethostbyname\()',
    '(cmd\.exe)',
    '(shell\.application)',
    '(documents\s+and\s+settings)',
    '(system32)',
    '(serv-u)',
    '(提权)',
    '(phpspy)',
    '(后门)',
    '(webshell)',
    '(Program\s+Files)',
    'www.phpdp.com',
    'phpdp',
    'PHP神盾',
    'decryption',
    'Ca3tie1',
    'GIF89a',
    'IKFBILUvM0VCJD\/APDolOjtW0tgeKAwA',
    '\'e\'\.\'v\'\.\'a\'\.\'l\'',
]

def Scan(path):
    for root,dirs,files in os.walk(path):
        for filespath in files:
            isover = False
            if '.' in filespath:
                ext = filespath[(filespath.rindex('.')+1):]
                if ext=='php' and filespath not in pass_file:
                    file= open(os.path.join(root,filespath))
                    filestr = file.read()
                    file.close()
                    for rule in rulelist:
                        result = re.compile(rule).findall(filestr)
                        if result:
                            print '文件:'+os.path.join(root,filespath)
                            print '恶意代码:'+str(result[0])
                            print '\n\n'
                            sendmail(toaddrs,"增值发现恶意代码",'文件:'+os.path.join(root,filespath)+"\n" + '恶意代码:'+str(result[0]))
                            break

try:
    if os.path.lexists("/home/web_root/"):
        print('\n\n开始扫描:'+ "/home/web_root/")
        print('               可疑文件                 ')
        print('########################################')
        Scan("/home/web_root/")
        print('提示:扫描完成--~')
    else:
        print '提示:指定的扫描目录不存在--- '
except IndexError:
    print "请指定扫描文件目录"

来自:http://blog.kukafei520.net/html/2013/811.html

Linux系统监控脚本

一个简单的系统监控脚本,有需要的朋友可以参考下。

#!/bin/bash
time=`date +"%Y-%m-%d %H:%M:%S"`
d=`date +%m%d`
N=`ps -ef | grep httpd | grep -v grep | wc -l`
Q=`ps -ef | grep java | grep -v grep | wc -l`
[ -d /root/check_log/ ] || mkdir /root/check_log
IP=`ifconfig eth0 | sed -n '2'p | awk '{print $2}' | awk -F':' '{print $2}'`
M=`uptime | awk '{print $8,$9,$10,$11,$12}'`
O=`ifconfig eth0 | sed -n '8'p | awk '{print $3,$4}'`
P=`ifconfig eth0 | sed -n '8'p | awk '{print $7,$8}'`
R=`ifconfig eth1 | sed -n '8'p | awk '{print $3,$4}'`
S=`ifconfig eth1 | sed -n '8'p | awk '{print $7,$8}'`
A=`top -bn1 | sed -n '2'p | awk '{print $2}'`
B=`top -bn1 | sed -n '2'p | awk '{print $10}'`
echo ****************************$IP**************************** >> /root/check_log/$d.log
echo "系统当前时间:" >> /root/check_log/$d.log
echo $time >> /root/check_log/$d.log
echo "---------------------check system load------------------" >> /root/check_log/$d.log
echo "系统当前负载:" >> /root/check_log/$d.log
echo $M >> /root/check_log/$d.log
echo "---------------------check 总进程数---------------------" >> /root/check_log/$d.log
echo "系统当前总进程数:" >> /root/check_log/$d.log
echo $A >> /root/check_log/$d.log
echo "系统当前僵死进程数:" >> /root/check_log/$d.log
echo $B >> /root/check_log/$d.log
echo "---------------------check 应用进程数--------------------" >> /root/check_log/$d.log
echo "当前apache进程数:" >> /root/check_log/$d.log
echo $N >> /root/check_log/$d.log
echo "当前java进程数" >> /root/check_log/$d.log
echo $Q >> /root/check_log/$d.log
echo "---------------------check Tcp连接状态-------------------" >> /root/check_log/$d.log
netstat -n | awk '/^tcp/ {++S[$NF]} END {for(a in S) print a,S[a]}' >> /root/check_log/$d.log
echo "---------------------check 网卡流量-----------------------" >> /root/check_log/$d.log
echo "当前eth0网卡流量:" >> /root/check_log/$d.log
echo "接收总流量:$O" >> /root/check_log/$d.log
echo "发送总流量:$P" >> /root/check_log/$d.log
echo "当前eth1网卡流量:" >> /root/check_log/$d.log
echo "接收总流量:$R" >> /root/check_log/$d.log
echo "发送总流量:$S" >> /root/check_log/$d.log
echo "-----------------------------check cpu load------------------------------" >> /root/check_log/$d.log
echo "系统当前cpu负载:" >> /root/check_log/$d.log
sar -u 1 10 | grep -v Linux | grep -v ^$ >> /root/check_log/$d.log
echo "-----------------------------check mem load------------------------------" >> /root/check_log/$d.log
echo "系统当前内存信息:" >> /root/check_log/$d.log
cat /proc/meminfo >> /root/check_log/$d.log
echo "-----------------------------check 磁盘空间------------------------------" >> /root/check_log/$d.log
echo "系统当前磁盘容量:" >> /root/check_log/$d.log
df -h >> /root/check_log/$d.log
echo "-----------------------------check io load-------------------------------" >> /root/check_log/$d.log
echo "系统当前io磁盘负载:" >> /root/check_log/$d.log
iostat 1 10 | grep -v ^$ | grep -v Linux | grep -v dm | grep -v hdc >> /root/check_log/$d.log
find /root/check_log/ -mtime +6 |xargs rm -f

来自:http://www.jbxue.com/article/4472.html

DirectAdmin 扫描挂QQ程序

最近发现有台DA机器的Apache总是自动重启,每次大概1-3分钟,检查apache日记、tcp和80端口连接后发现是挂QQ的程序导致的,接下来扫描用户php文件就好了

screen -S scan
find /home/* -type f -name "*.php" |xargs grep "pt.3g.qq.com" > scan.txt

现在挂QQ程序一般是用手机网页QQ,关键词是 pt.3g.qq.com ,扫描完成后会保存在 scan.txt 文件中