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Added note on tag formatting of docker image (#3207) 

* Added note on tag formatting of docker image

Signed-off-by: French Ben <frenchben@docker.com>

* Updated notes

Signed-off-by: French Ben <frenchben@docker.com>
This commit is contained in:
French Ben 2017-05-09 13:02:24 -07:00 committed by Misty Stanley-Jones
parent bd18b17f4e
commit fe0620225d
1 changed files with 9 additions and 1 deletions
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10
engine/admin/logging/awslogs.md
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@ -74,7 +74,7 @@ $ docker run --log-driver=awslogs \
... ...
``` ```
> **Note:** > **Note**:
> Your AWS IAM policy must include the `logs:CreateLogGroup` permission before you attempt to use `awslogs-create-group`. > Your AWS IAM policy must include the `logs:CreateLogGroup` permission before you attempt to use `awslogs-create-group`.
@ -87,6 +87,14 @@ When both `awslogs-stream` and `tag` are specified, the value supplied for `awsl
If not specified, the container ID is used as the log stream. If not specified, the container ID is used as the log stream.
{% raw %}
> **Note**:
> The CloudWatch log API doesn't support `:` in the log name. This can cause some issues when using the `{{ .ImageName }}` as a tag, since a docker image has a format of `IMAGE:TAG`, such as `alpine:latest`.
> Template markup can be used to get the proper format.
> To get the image name and the first 12 characters of the container id, you can use: `--log-opt tag='{{ with split .ImageName ":" }}{{join . "_"}}{{end}}-{{.ID}}'`
> the output will be something like: `alpine_latest-bf0072049c76`
{% endraw %}
## Credentials ## Credentials