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Clarification reg. disk sensors of systemmonitor (#14400)

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* Clarification reg. disk sensors of systemmonitor

* Added "mandatory" column for arguments

* Apply suggestions from code review

Co-authored-by: Franck Nijhof <git@frenck.dev>

* Adjusted mandatory column

Co-authored-by: Franck Nijhof <git@frenck.dev>
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Philip Allgaier 2020-09-05 16:43:10 +02:00 committed by GitHub
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source/_integrations/systemmonitor.markdown
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@ -42,37 +42,50 @@ resources:
The table contains types and their argument to use in your `configuration.yaml`
file.
| Type (`type:`) | Argument (`arg:`) |
| :--------------------- |:--------------------------|
| disk_use_percent | Path, e.g., `/` |
| disk_use | Path, e.g., `/` |
| disk_free | Path, e.g., `/` |
| memory_use_percent | |
| memory_use | |
| memory_free | |
| swap_use_percent | |
| swap_use | |
| swap_free | |
| load_1m | |
| load_5m | |
| load_15m | |
| network_in | Interface, e.g., `eth0` |
| network_out | Interface, e.g., `eth0` |
| throughput_network_in | Interface, e.g., `eth0` |
| throughput_network_out | Interface, e.g., `eth0` |
| packets_in | Interface, e.g., `eth0` |
| packets_out | Interface, e.g., `eth0` |
| ipv4_address | Interface, e.g., `eth0` |
| ipv6_address | Interface, e.g., `eth0` |
| processor_use | |
| processor_temperature | |
| process | Binary, e.g., `octave-cli` |
| last_boot | |
| Type (`type:`) | Argument (`arg:`) | Argument mandatory |
| :--------------------- |:--------------------------|:--------------------------|
| disk_use_percent | Path, e.g., `/` | no |
| disk_use | Path, e.g., `/` | no |
| disk_free | Path, e.g., `/` | no |
| memory_use_percent | | |
| memory_use | | |
| memory_free | | |
| swap_use_percent | | |
| swap_use | | |
| swap_free | | |
| load_1m | | |
| load_5m | | |
| load_15m | | |
| network_in | Interface, e.g., `eth0` | yes |
| network_out | Interface, e.g., `eth0` | yes |
| throughput_network_in | Interface, e.g., `eth0` | yes |
| throughput_network_out | Interface, e.g., `eth0` | yes |
| packets_in | Interface, e.g., `eth0` | yes |
| packets_out | Interface, e.g., `eth0` | yes |
| ipv4_address | Interface, e.g., `eth0` | yes |
| ipv6_address | Interface, e.g., `eth0` | yes |
| processor_use | | |
| processor_temperature | | |
| process | Binary, e.g., `octave-cli` | yes |
| last_boot | | |
## Disk usage
If no path is provided via the optional argument, the integration defaults to '/' (root).
**Note:** The disk usage sensors do not support monitoring folder/directory sizes. Instead, it is only concerned with "disks" (more specifically mount points on Linux).
```bash
$ df -H
Filesystem Size Used Avail Use% Mounted on
/dev/root 29G 12G 16G 42% /
devtmpfs 805M 0 805M 0% /dev
tmpfs 934M 0 934M 0% /dev/shm
/dev/mmcblk0p1 253M 54M 199M 22% /boot
```
Defining a `disk_use` sensor for `/` and `/home/pi` is redundant and will return the same values, since they both belong to the same "disk". However, defining separate sensors for `/dev` and `dev/shm` is possible and provides different values, since those are treated as separate "disks" by the integration.
## Processor temperature
- If no hardware sensor data is available (e.g., because the integration runs in a virtualized environment), the sensor entity will not be created.