chore: import upstream snapshot with attribution

2026-07-13 13:11:39 +08:00
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+---
+id: hdfs_datanode
+title: Monitoring Apache HDFS DataNode
+sidebar_label: Apache HDFS DataNode
+keywords: [big data monitoring system, distributed file system monitoring, Apache HDFS DataNode monitoring]
+---
+
+> 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       |