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docker cron任务以及常见问题
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<li>关于cron<br>一般来说cron预设有三个地方会有执行脚本设定档,分别为: <span id="more"></span></li>
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<p><code>/etc/crontab</code> crontab 会执行的设定档<br><code>/etc/cron.d/*</code> cron 会执行的设定档<br><code>/var/spool/cron/*</code> crontab -e 存放的位置<br>一般执行顺序是<code>/etc/cron.d/</code>优先级最高,<code>/etc/cron.d/*</code>次之,<code>/var/spool/cron/*</code>最后.<br>而且防止<code>/etc/cron.d/</code>的配置文件一般<code>* * * * * root bash xxx.sh</code>,<br><code>/var/spool/cron/*</code>则为<code>* * * * * xxx.sh</code>,并且xxx.sh必须具有执行权限<br>2. 当cron执行错误的时候如果系统有邮件发送功能,你会收到cron运行出错的信息<br>3. docker 配置,只要在CMD 的时候启动cron就行了,把你的cron配置放置在<code>/etc/cron.d/</code>下<br>或者crontab crontabconfig就可以啦</p>
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