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Fix HOST_MOUNT_PREFIX in docker with disk input (#3529)

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This commit is contained in:
Daniel Nelson
2017-12-01 11:21:39 -08:00
committed by GitHub
parent b89db57629
commit 7e91563647
4 changed files with 38 additions and 8 deletions
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6
plugins/inputs/system/DISK_README.md
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@@ -20,9 +20,11 @@ Additionally, the behavior of resolving the `mount_points` can be configured by
When present, this variable is prepended to the mountpoints discovered by the plugin before retrieving stats.
The prefix is stripped from the reported `path` in the measurement.
This settings is useful when running `telegraf` inside a docker container to report host machine metrics.
In this case, the host's root volume should be mounted into the container and the `HOST_MOUNT_PREFIX` and `HOST_ETC` environment variables set.
In this case, the host's root volume should be mounted into the container and the `HOST_MOUNT_PREFIX` and `HOST_PROC` environment variables set.
`docker run -v /:/hostfs:ro -e HOST_MOUNT_PREFIX=/hostfs -e HOST_ETC=/hostfs/etc telegraf`
```
docker run -v /:/hostfs:ro -e HOST_MOUNT_PREFIX=/hostfs -e HOST_PROC=/hostfs/proc telegraf
```
### Measurements & Fields: