使用Shell脚本检查 Exchange Cluster 角色切换

使用Shell脚本检查 Exchange Cluster 角色切换

作者：zlj2208

修改日期：2010年01月26日

转载请注明转自http://zlj2208.cublog.cn/

Exchange Cluster在切换的时候我们能不知道，我们可以通过以脚本放到crontab中，每2分钟跑一次。

原理：使用snmpwalk得到Exchange Server IP 的状态。


脚本内容如下：

#!/bin/bash
#CompanyName City Mail Server Cluster Check
#Written by zlj2208 at 20081211
#
#Define snmp variable
MASTER_IP='172.16.17.114'
SLAVER_IP='172.16.17.115'
CLUSER_IP='172.16.17.118'
SNMP_CMD='/usr/bin/snmpwalk -t1 -r3'
COM_STRING='public'
MIB_STRING='IP-MIB::ipAdEntAddr'
#
P_DIR='/home/monitor/app'
BIN_DIR=${P_DIR}/bin
TMP_DIR=$P_DIR/tmp
TMP_FILE=${TMP_DIR}/cluser_check.tmp
MAIL_FILE=${TMP_DIR}/cluser_check_mail.txt
MAIL_SNMP=${TMP_DIR}/cluser_check_snmp.txt
DATE_TIME=`date "+%Y-%m-%d %H:%M:%S"`
SCRIPT_NAME="${BIN_DIR}/`basename $0`"
LOG_FILE="/home/monitor/app/logs/check_cluster_role.log"

TO_MAIL='[e-mail];[e-mail]'
FROM_MAIL='[e-mail]'

role_warn_mail()
{
CLUSTER_IP_STATUS=`awk '/172.16.17/ {print $NF}' ${TMP_FILE}`
cat <<-EOF >${MAIL_FILE}
Subject:CompanyName City Mail Server Cluster Role Notice
From:${FROM_MAIL}
Return-Path:${FROM_MAIL}
To:${TO_MAIL}
Reply-to:${FROM_MAIL}
Content-Type:text/plain;ChartSet=gb2312

Check Time:${DATE_TIME}

Mail backend server cluster rule may be change to ${SLAVER_IP} .

Pleae login server 172.16.17.118 to check server status.

Currnt cluster status:
`awk '{print $NF}' ${TMP_FILE}`

This mail send by : ${SCRIPT_NAME}

EOF

/usr/sbin/sendmail -t < ${MAIL_FILE}
}

snmp_warn_mail()
{
cat <<-EOF >${MAIL_SNMP}
Subject:CompanyName City Mail Server Cluster Role Notice
From:${FROM_MAIL}
Return-Path:${FROM_MAIL}
To:[e-mail];[e-mail]
Reply-to:${FROM_MAIL}
Content-Type:text/plain;ChartSet=gb2312

Check Time:${DATE_TIME}

Mail backend server cluster rule may be donw.

Pleae check server status.

This mail send by : ${SCRIPT_NAME}

EOF

/usr/sbin/sendmail -t < ${MAIL_SNMP}
}

${SNMP_CMD} -c${COM_STRING} -v2c ${CLUSER_IP} ${MIB_STRING} >${TMP_FILE} 2>/dev/null

echo "------------`date +'%F %X'`-------------------" >>${LOG_FILE}
cat ${TMP_FILE} >>${LOG_FILE}
echo "----------------END-----------------" >>${LOG_FILE}


if [ ! -s ${TMP_FILE} ] ; then
    snmp_warn_mail
    exit
fi


grep ${MASTER_IP} ${TMP_FILE} 2>&1 >/dev/null

if [ $? -ne 0 ] ; then
    role_warn_mail
else
    :
    #echo role ok
fi