通过邮件通知你的ejabberd服务器中发生的错误

在ejabberd服务器的二次开发当中，自己写的代码难免会发生错误。下面通过一个简单的脚本在，ejabberd发生错误的时候。error.log中的最新的错误内容以邮件的方式发送到你指定的邮箱中，下面是脚本的内容：

#!/bin/bash
##
## Auther: quanzhuo
## Date: 2015/5/14
##
## This script check the ejabberd logs to find out if there is any
## new errors occured in ejabberd server. If that, the script will
## mail the exact error content to the the mail address specified

## Mandatory root to exec this script
if [ $(id -g) -ne 0 ]; then
    echo "This script must be executed by root"
    exit 1
fi

## Default arguments if not specified in command line
ADDRS=380317031@qq.com,jimmy.jp.chen@foxconn.com
LOG_DIR=/opt/ejabberd/var/log/ejabberd
BACKUP_DIR=/root/.error_logs

## Display the help info
help()
{
    echo "Usage: error_report [-adh]"
    echo "-a \"addr\""
    echo -n "--address \"addr\""
    echo "     addr is address that the mail send to, default to 380317031@qq.com"
    echo "-d \"dir\""
    echo -n "--directory \"dir\""
    echo "    dir is the log directory, default to /opt/ejabberd/var/log/ejabberd"
    echo "-h"
    echo "--help               display this help and exit"
    echo ""
}


## Parse command line arguments
while [ $# -ne 0 ];
do
    PARAM=$1
    shift
    case $PARAM in
	-a)
	    ADDRS=$1
	    shift
	    ;;
	--address)
	    ADDRS=$1
	    shift
	    ;;
	-d)
	    LOG_DIR=$1
	    shift
	    ;;
	--directory)
	    LOG_DIR=$1
	    shift
	    ;;
	-h)
	    help
	    exit 0
	    ;;
	--help)
	    help
	    exit 0
	    ;;
	*)
	    echo "BAD arguments"
	    help
	    exit 1
	    ;;
    esac
done

## compare the old log and the new log
if [ -f $BACKUP_DIR/backup_log ];then
    for log in $(ls $LOG_DIR/error.log* | sort -rn)
    do
	cat $log >> $BACKUP_DIR/new_log
    done
    diff $BACKUP_DIR/backup_log $BACKUP_DIR/new_log &> /dev/null
    if [ $? -ne 0 ];then
	diff $BACKUP_DIR/backup_log $BACKUP_DIR/new_log | tail -n +2 | cut -c 3- >> $BACKUP_DIR/new_errors
	rm -rf $BACKUP_DIR/backup_log
	mv $BACKUP_DIR/new_log $BACKUP_DIR/backup_log
    else
	rm -rf $BACKUP_DIR/new_log
    fi
else
    mkdir -p $BACKUP_DIR
    for log in $(ls $LOG_DIR/error.log* | sort -rn)
    do
	cat $log >> $BACKUP_DIR/backup_log
    done
    cp $BACKUP_DIR/backup_log $BACKUP_DIR/new_errors
fi

if [ -f $BACKUP_DIR/new_errors ];then
    mail -s "New errors occured in ejabberd" $ADDRS < $BACKUP_DIR/new_errors &> /dev/null
    echo "report errors at: $(date)" >> $BACKUP_DIR/report_log
    cat $BACKUP_DIR/new_errors >> $BACKUP_DIR/report_log
    rm -rf $BACKUP_DIR/new_errors
fi

用法：

error_report接受三个参数：

-a/--address：指定邮件通知的邮箱地址，支持多个邮箱，邮箱之间用逗号分隔，不能有空格。

-d/--directory：指定你的ejabberd的log的所在路径，默认为/opt/ejabberd/var/log/ejabberd

-h/--help：显示帮助信息

将该脚本放在你的主机的某一个目录下如：/root/bin。

赋予其可执行权限。

然后在crontab中添加一条例行性任务即可。

比如：

输入crontab -e打开crontab进行编辑，如果每隔5分钟检测一次有没有新的error发生：

*/5       *            *              *             *        /root/bin/error_report   -a 380317031@qq.com,yourmail@qq.com