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docs: update sysmon to oshisysmon in reference docs #15258

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docs: update sysmon to oshisysmon in reference docs #15258

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docs: update sysmon to oshisysmon in reference docs
317brian Oct 25, 2023
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add back sysmon w/ blurb that it is deprecated
317brian Oct 26, 2023
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317brian Oct 27, 2023
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Merge branch 'master' into update-metrics-monitor-docs
317brian Nov 8, 2023
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update spelling file
317brian Nov 15, 2023
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Merge branch 'master' into update-metrics-monitor-docs
317brian Dec 5, 2023
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7 changes: 4 additions & 3 deletions docs/configuration/index.md
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Expand Up @@ -106,7 +106,7 @@ There are four JVM parameters that we set on all of our processes:
- The temp directory should not be volatile tmpfs.
- This directory should also have good read and write speed.
- Avoid NFS mount.
- The `org.apache.druid.java.util.metrics.SysMonitor` requires execute privileges on files in `java.io.tmpdir`. If you are using the system monitor, do not set `java.io.tmpdir` to `noexec`.
- The `org.apache.druid.java.util.metrics.OshiSysMonitor` and `org.apache.druid.java.util.metrics.SysMonitor` both require execute privileges on files in `java.io.tmpdir`. If you are using the system monitor, do not set `java.io.tmpdir` to `noexec`. Note that SysMonitor is deprecated. We recommend using OshiSysMonitor.
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@hardikbajaj - do you know if the OshiSysMonitor needs this privilege?

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@hardikbajaj ping

- `-Djava.util.logging.manager=org.apache.logging.log4j.jul.LogManager` This allows log4j2 to handle logs for non-log4j2 components (like jetty) which use standard java logging.

### Extensions
Expand Down Expand Up @@ -383,7 +383,8 @@ Metric monitoring is an essential part of Druid operations. The following monit
|Name|Description|
|----|-----------|
|`org.apache.druid.client.cache.CacheMonitor`|Emits metrics (to logs) about the segment results cache for Historical and Broker processes. Reports typical cache statistics include hits, misses, rates, and size (bytes and number of entries), as well as timeouts and and errors.|
|`org.apache.druid.java.util.metrics.SysMonitor`|Reports on various system activities and statuses using the [SIGAR library](https://github.com/hyperic/sigar). Requires execute privileges on files in `java.io.tmpdir`. Do not set `java.io.tmpdir` to `noexec` when using `SysMonitor`.|
|`org.apache.druid.java.util.metrics.SysMonitor`| Deprecated. Use OshiSysMonitor instead. Reports on various system activities and statuses using the [SIGAR library](https://github.com/hyperic/sigar). Requires execute privileges on files in `java.io.tmpdir`. Do not set `java.io.tmpdir` to `noexec` when using SysMonitor.|
|`org.apache.druid.java.util.metrics.OshiSysMonitor`|Reports on various system activities and statuses using the [OSHI JNA-based library](https://github.com/oshi/oshi). Requires execute privileges on files in `java.io.tmpdir`. Do not set `java.io.tmpdir` to `noexec` when using `OshiSysMonitor`.|
|`org.apache.druid.java.util.metrics.JvmMonitor`|Reports various JVM-related statistics.|
|`org.apache.druid.java.util.metrics.JvmCpuMonitor`|Reports statistics of CPU consumption by the JVM.|
|`org.apache.druid.java.util.metrics.CpuAcctDeltaMonitor`|Reports consumed CPU as per the cpuacct cgroup.|
Expand All @@ -405,7 +406,7 @@ Metric monitoring is an essential part of Druid operations. The following monit
For example, you might configure monitors on all processes for system and JVM information within `common.runtime.properties` as follows:

```
druid.monitoring.monitors=["org.apache.druid.java.util.metrics.SysMonitor","org.apache.druid.java.util.metrics.JvmMonitor"]
druid.monitoring.monitors=["org.apache.druid.java.util.metrics.OshiSysMonitor","org.apache.druid.java.util.metrics.JvmMonitor"]
```

You can override cluster-wide configuration by amending the `runtime.properties` of individual processes.
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