OptaPlanner创办人Geoffrey De Smet及其团队,在Red Hat 技术峰会上主题会场上,演示了一个通过OptaPlanner实现实时规划与调度的示例.Geoffrey及其团队专门为此分三篇博文描述了该程序.该程序及其相关博文是OptaPlanner在VRP领域极之经典之作.本系列也分三篇对博文进行翻译,以飨各位ORer, APSer和Planner. 目前本人正在研究该程序,未来将会进一步对该程序作更深入的分析,并形成博文,分享其中奥妙. [以下为译文] 今年,我和我的团队…
今天,启动MySQL服务器失败,如下所示: [root@spark01 ~]# /etc/init.d/mysqld start Starting mysqld (via systemctl): Job for mysqld.service failed because the control process exited with error code. See "systemctl status mysqld.service" and "journalctl -xe&qu…
我在自己的mac笔记本上装了一个docker,并在docker容器中安装了lnmp环境,经常会遇到在使用"lnmp restart"命令启动lnmp服务的时候,mysql服务启动失败,启动日志: Stoping LNMP... Stoping nginx... nginx is not running. ERROR! MySQL server PID file could not be found! Gracefully shutting down php-fpm /etc/init.…
问题与分析 某天忽然发现,一直运行得好好的Pages服务部署失败了,GitHub Pages报错如下: Your site is having problems building: The tag cq on line 3 in source/high/index.md is not a recognized Liquid tag. For more information, see https://help.github.com/articles/page-build-failed-unkno…