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Remove unclear content not meant for end users (#5278)

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Misty Stanley-Jones 2017-11-10 10:50:08 -08:00 committed by GitHub
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engine/admin/logging/log_tags.md
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@ -40,25 +40,3 @@ the tags. If you use `docker rename` to rename a container, the new name is not
reflected in the log messages. Instead, these messages continue to use the
original container name.
For advanced usage, the generated tag's use
[go templates](http://golang.org/pkg/text/template/) and the container's
[logging context](https://github.com/moby/moby/blob/17.05.x/daemon/logger/loginfo.go).
As an example of what is possible with the syslog logger, if you use the following
command, you get the output that follows:
```bash
{% raw %}
$ docker run -it --rm \
--log-driver syslog \
--log-opt tag="{{ (.ExtraAttributes nil).SOME_ENV_VAR }}" \
--log-opt env=SOME_ENV_VAR \
-e SOME_ENV_VAR=logtester.1234 \
flyinprogrammer/logtester
{% endraw %}
```
```none
Apr 1 15:22:17 ip-10-27-39-73 logtester.1234[45499]: + exec app
Apr 1 15:22:17 ip-10-27-39-73 logtester.1234[45499]: 2016-04-01 15:22:17.075416751 +0000 UTC stderr msg: 1
```