We have this problem with version 5.2.0. so we decide to update to 5.2.2 But this problem seems remain. We solve this by totally delele relate agent file and process and restart. just like first time install.
sudo kill -9 `ps -ef|grep datastax_agent_monitor | head -1 |awk '{print $2}'` \ sudo kill -9 `cat /var/run/datastax-agent/datastax-agent.pid` \ sudo rm -rf /var/lib/datastax-agent \ sudo rm -rf /usr/share/datastax-agent qihuang.zheng 原始邮件 发件人:Kai wangdep...@gmail.com 收件人:useru...@cassandra.apache.org 发送时间:2015年11月5日(周四) 04:39 主题:Can't save Opscenter Dashboard Hi, Today after one of the nodes is rebooted, OpsCenter dashboard doesn't save anymore. It starts with an empty dashboard with no widget or graph. If I add some graph/widget, they are being updated fine. But if I refresh the browser, the dashboard became empty again. Also there's no "DEFAULT" tab on the dashboard as the user guide shows. I am not sure if it was there before.