摘要：
#cron定时任务 # coding=utf-8 """ Demonstrates how to use the background scheduler to schedule a job that executes on 3 second intervals. """ from datetime 阅读全文
摘要：
1、生成key openssl rand -base64 745 > /root/mongodb3.2/key/mongodb-keyfile chmod 600 /root/mongodb3.2/key/mongodb-keyfile 将该key放到集群中机器的每一台上，记住必须保持一致，权限设置 阅读全文