How can we collect Host machine metrics while telegraf is running in docker container?

Vishwas · November 21, 2019, 6:21am

We are running telegraf container on a Linux machine.
On using [[input.cpu]] input plugin we are getting metrics of the docker container, how to get the Linux machine’s metrics ?

daniel · December 4, 2019, 9:51pm

I think this item in the FAQ will help:

github.com

influxdata/telegraf/blob/master/docs/FAQ.md#q-how-can-i-monitor-the-docker-engine-host-from-within-a-container

# Frequently Asked Questions

## Q: How can I monitor the Docker Engine Host from within a container?

You will need to setup several volume mounts as well as some environment
variables:

```shell
docker run --name telegraf \
    -v /:/hostfs:ro \
    -e HOST_ETC=/hostfs/etc \
    -e HOST_PROC=/hostfs/proc \
    -e HOST_SYS=/hostfs/sys \
    -e HOST_VAR=/hostfs/var \
    -e HOST_RUN=/hostfs/run \
    -e HOST_MOUNT_PREFIX=/hostfs \
    telegraf
```

## Q: Why do I get a "no such host" error resolving hostnames that other programs can resolve?

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How can we collect Host machine metrics while telegraf is running in docker container?

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