I install Hadoop and its services onto a cluster of VMs on Open Stack and use Ambari of HortonWork to monitor the services. I opened all the necessary ports for the services to run already. But there is still one problem/port that I cannot figure out. I used all the default setting.
For ambari-server: port 8440 and 8080
For ambari-agent: port 8441
The agent could not access to some services that I don’t know. I hope the issue due to a blocked port. I try to find the port to open but don’t have an answer. I also looked at the log file of the agent but cannot find out the issues. Anyone have the experiences with Ambari?
Here are some images of the problem.
All the services look good. Mapreduce can run service check successfully
But every host that run the agent got a problem and I cannot see the health of those remote host with Ganglia, even though Ganglia reported healthy
A closer look on the issues at every hosts