定时任务

最新推荐文章于 2022-08-29 13:19:26 发布

原创最新推荐文章于 2022-08-29 13:19:26 发布 · 121 阅读

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本文介绍了一个使用Bash脚本实现的Cron作业调度案例，该脚本用于周期性地启动或重启集群进程，并记录详细的日志信息。通过修改Cron配置文件，确保指定的任务能够按照预设的时间间隔执行。此外，脚本还包含了循环记录系统状态的逻辑。

#!/bin/bash

. /etc/mediax.profile

cronShellFile="${MEDIAX3600_HOME}/${MEDIAX_ROOT}/tools/common/startRestartClusterProc2.sh";
log_file="/tmp/cronShellFileTest.log";
crontabFile="/var/spool/cron/tabs/root";

function main()
{
minute="0,5,10,15,20,25,30,35,40,45,50,55"
hour="*";
day="*";
month="*";
week="*";
cronCommand="${minute} ${hour} ${day} ${month} ${week} ${cronShellFile}";

tag=`cat ${crontabFile}|grep "${cronShellFile}"`;
if [ "_${tag}" == "_" ]
then
/usr/bin/killall cron;
chmod u+w ${crontabFile};
echo "${cronCommand}" >> ${crontabFile};
/usr/sbin/rccron restart;
chmod u-w ${crontabFile};
else
/usr/bin/killall cron;
chmod u+w ${crontabFile};
grep -v "${cronScript}" ${crontabFile} > ${temp};
echo "${cronCommand}" >> ${temp};
mv ${temp} ${crontabFile};
/usr/sbin/rccron restart;
chmod u-w ${crontabFile};
fi;

i=1;
while [ "${i}" -lt "44" ]
do
echo "start:`date +%Y-%m-%d" "%H:%M:%S`" | tee -a ${log_file};

hagrp -state | tee -a ${log_file};

sleep 300
echo "" | tee -a ${log_file};
echo "" | tee -a ${log_file};
done

}

main