I upgrade ambari 2.2 to 2.5.1 recently. after upgrade,I found that,some alert status is UNKNOW. open an alert definition, log shows : Properties file doesn't contain namenode.sink.timeline.collector.hosts. Can't define metric collector hosts but when I open the service tap and the metrics shows the data: So I don't why. And I view the configure file:/etc/hadoop/2.4.0.0-169/0/hadoop-metrics2.properties it show : datanode.sink.timeline.collector=node4.hadoop namenode.sink.timeline.collector=node4.hadoop resourcemanager.sink.timeline.collector=node4.hadoop nodemanager.sink.timeline.collector=node4.hadoop jobhistoryserver.sink.timeline.collector=node4.hadoop journalnode.sink.timeline.collector=node4.hadoop applicationhistoryserver.sink.timeline.collector=node4.hadoop ... View more

I uset hdp 2.4 and ambari 2.2.1.1 I had custom an ambari alert and test on my test servers. But when I copy it on mysql product environment, one server seems every thing is ok,and the other is show me : 'NoneType' object has no attribute 'modules' So, I try to the monitor script writen in pytthon. When I run python monitor.py, it shows ok,but on the ambari-agent,it still wrong. So is there a way to test the script and debug the monitor script?? ... View more