Monitoring Apache HDFS DataNode
HertzBeat monitors metrics for Apache HDFS DataNode nodes.
Protocol Used: HTTP
Pre-monitoring Operations
Retrieve the HTTP monitoring port for the Apache HDFS DataNode. Value: dfs.datanode.http.address
Configuration Parameters
| Parameter Name | Parameter Description |
|---|---|
| Target Host | IP(v4 or v6) or domain name of the target to be monitored. Exclude protocol. |
| Port | Monitoring port number for Apache HDFS DataNode, default is 50075. |
| Query Timeout | Timeout for querying Apache HDFS DataNode, in milliseconds, default is 6000 milliseconds. |
| Metrics Collection Interval | Time interval for monitoring data collection, in seconds, minimum interval is 30 seconds. |
| Probe Before Monitoring | Whether to probe and check monitoring availability before adding. |
| Description/Remarks | Additional description and remarks for this monitoring. |
Metrics Collected
Metric Set: FSDatasetState
| Metric Name | Metric Unit | Metric Description |
|---|---|---|
| DfsUsed | GB | DataNode HDFS usage |
| Remaining | GB | Remaining space on DataNode HDFS |
| Capacity | GB | Total capacity of DataNode HDFS |
Metric Set: JvmMetrics
| Metric Name | Metric Unit | Metric Description |
|---|---|---|
| MemNonHeapUsedM | MB | Current usage of NonHeapMemory by JVM |
| MemNonHeapCommittedM | MB | Committed size of NonHeapMemory configured in JVM |
| MemHeapUsedM | MB | Current usage of HeapMemory by JVM |
| MemHeapCommittedM | MB | Committed size of HeapMemory by JVM |
| MemHeapMaxM | MB | Maximum size of HeapMemory configured in JVM |
| MemMaxM | MB | Maximum memory available for JVM at runtime |
| ThreadsRunnable | Count | Number of threads in RUNNABLE state |
| ThreadsBlocked | Count | Number of threads in BLOCKED state |
| ThreadsWaiting | Count | Number of threads in WAITING state |
| ThreadsTimedWaiting | Count | Number of threads in TIMED WAITING state |
Metric Set: runtime
| Metric Name | Metric Unit | Metric Description |
|---|---|---|
| StartTime | Startup time |