Linux看門狗指令碼 1.4

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最近項目的看門狗經曆了三個版本。

第一個版本:

用ps -ef，如果程式掛了就啟動

第二個版本：

程式由於運行時會出現不再監聽7901連接埠，所以不能簡單判斷機器是不是掛了，而是判斷此連接埠是否有監聽

第三個版本：

當7901連接埠不再監聽，就先把原來的killall在啟動，每次輸出到檔案的內容都加日期，要不然根本不知道這事情啥時候發生的

#!/bin/shset +xsource env.shPRMGRAM=scp_platformFILE_NAME=scp_monitor.logCurrent_Time=`date +"%Y-%m-%d %H:%M:%S.%N"`echo "[${Current_Time}] monitor start...." echo "[${Current_Time}] monitor start...." >> ${WORK_DIR}/log/${FILE_NAME}port=7905TCPListeningnum=`netstat -an | grep ":$port " | awk '$1 == "tcp" && $NF == "LISTEN" {print $0}' | wc -l`if [ $TCPListeningnum = 1 ]then{    echo "[${Current_Time}] The $port is listening"}else{    echo "[${Current_Time}] The port is not listening"}fiwhile [ 1 ]do  Current_Time=`date +"%Y-%m-%d %H:%M:%S.%N"`TCPListeningnum=`netstat -an | grep ":$port " |   awk '$1 == "tcp" && $NF == "LISTEN" {print $0}' | wc -l`if [ $TCPListeningnum = 1 ]then{    echo "[${Current_Time}] The ${port} is listening" >> ${WORK_DIR}/log/${FILE_NAME}}else{    echo "[${Current_Time}] The  ${port} is not listening" >> ${WORK_DIR}/log/${FILE_NAME}    echo "[${Current_Time}] killall  scp_platform now !" >> ${WORK_DIR}/log/${FILE_NAME}    kscp      echo "[${Current_Time}] check ${PRMGRAM} quit, now restart ${PRMGRAM} ..." >> ${WORK_DIR}/log/${FILE_NAME}      scp_platform&}fi    sleep 180done

其中依賴的env.sh主要是設定環境變數和自訂的變數

#bin/bashexport ROOT=/root/scpexport WORK_DIR=${ROOT}export INCLUDE=${ROOT}/includeexport OTL=${INCLUDE}/otl_mysqlexport LD_LIBRARY_PATH=${ROOT}/lib:/usr/local/libexport ACE_ROOT=${INCLUDE}export ODBCINI=/usr/local/etc/odbc.iniexport ODBCSYSINI=/usr/local/etcPATH=${PATH}:${ROOT}/binexport PATHodbcinst -jalias wk='cd ${ROOT}'alias bin='cd ${ROOT}/bin'alias cfg='cd ${ROOT}/conf'alias rmlog='rm -rf ${ROOT}/bin/log*.*; rm -rf ${ROOT}/log/*.*'alias lis='netstat -an|grep -i 7905'alias scp='${ROOT}/bin/scp_platform &'alias moni='${ROOT}/bin/monitor.sh &'alias myps='ps -fu root|grep -v grep|grep -i scp'alias mymoni='ps -fu root|grep -v grep|grep -i moni'alias kscp='killall -9 scp_platform'alias kmoni='killall -9 monitor.sh'isqlalias mynet='netstat -an | grep 7905'ulimit -c unlimitedulimit -n 65530