Monitoring Multiple Instances of the File System
Describes how to monitor the health and performance of your cluster.
Determining the Number of Running Instances
Procedure
Run the following command to determine the number of instances actually
running:
/opt/mapr/server/mrconfig info instances
Your output will look similar to the following. This output shows that
two File Server instances are running on ports 5660
and
5661
.
/opt/mapr/server/mrconfig info instances
2
5660 5661
Alternatively, on large clusters, run the following command to:
- Determine the number of configured
instances:
maprcli node list -columns numInstances hostname numInstances ip atsqa4-161.qa.lab 1 10.10.88.161 atsqa4-162.qa.lab 1 10.10.88.162 atsqa4-163.qa.lab 1 10.10.88.163 atsqa4-164.qa.lab 1 10.10.88.164
- Determine the number of running instances reported by file system
to
CLDB:
maprcli node list -columns numReportedInstances numReportedInstances hostname ip 2 atsqa4-161.qa.lab 10.10.88.161 1 atsqa4-162.qa.lab 10.10.88.162 1 atsqa4-163.qa.lab 10.10.88.163 2 atsqa4-164.qa.lab 10.10.88.164
Determining the Number of file system Threads
About this task
You can run the mrconfig info threads command to view file system threads from all the instances. The output is tagged to identify the instance.