Configuration through environment

[andyshinn]

Any plans to do configuration through environment? I'd love the ability to configure with something like:

docker run \
  -e DOCKER_ENDPOINT="unix:///tmp/docker.sock" \
  -e DOCKER_DOMAIN="docker.localhost" \
  -e DOCKER_WATCH=true \
  -v /var/run/docker.sock:/tmp/docker.sock \
  emilevauge/traefik

[vdemeester]

@andyshinn cool idea yeah, it's kinda in our head to add a possibility to configure the docker image in some way 😉

[emilevauge]

Hi
It's in my roadmap to integrate https://github.com/spf13/viper.

[andyshinn]

Oh yea, Viper looks like a cool solution. Would definitely help!

[stongo]

+1

Does the configuration file currently inject environment variables?
Also let me know if you want help on this issue. It's something I would rather see sooner than later so willing to contribute.

[emilevauge]

Could you use flags instead?

[stongo]

Sure I can add flags for all config items instead of using ENV vars.
Would be glad to submit PR

[emilevauge]

Flags are already here in fact :)

[stongo]

For all settings found in config file? Is there a flag to disable the
config file requirement?
On Apr 2, 2016 11:56 AM, "Emile Vauge" notifications@github.com wrote:

Flags are already here in fact :)

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#7 (comment)

[stongo]

Flags still don't give the same advantage as environment variables in a container runtime for passing secrets and dynamic configuration

[emilevauge]

Right, what do you mean by dynamic configuration?

[stongo]

Anything environment specific where traefik should find itself scheduled.

Are all config items currently flags and can a config file requirement be
disabled?
On Apr 2, 2016 12:37 PM, "Emile Vauge" notifications@github.com wrote:

Right, what do you mean by dynamic configuration?

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#7 (comment)

[emilevauge]

@stongo: almost everything can be set using flags.
You can just give traefik an empty traefik.toml file and configure it using flags.
FYI, we are in the process of refactoring flags in order to simplify their maintenance.

[stongo]

Great to hear it's on the roadmap! Thanks for the advice

[gjonespf]

Key use cases for viper et al for me I think would be doing things like:

• Turning on and off acme per frontend
• Specifying auth redirects per frontend
• Specifying SSL key/cert files per frontend

looking at trying to do this atm, and it looks quite difficult as is. Not sure if consul/etcd stores support key/cert changes, and ACME looks like config only from what I can see - or perhaps I've just not seen the right example yet.

So keen to see this in the roadmap. Where is the roadmap, btw? 😉

[errm]

As I understand we have switched to https://github.com/containous/staert, I think this issue could now be closed? right @emilevauge?

[cocap10]

So far, environment variables are not handled by https://github.com/containous/staert. But it could be a nice improvement ... WDYT @emilevauge ?

[stealthybox]

^
Environment variables are a very good way of persisting simple configuration information across a cluster.
Swarm Mode allows you to update the environment variables of existing services.
This would be a really great addition to staert.

[yajo]

I felt the same, but then I discovered that every option you can set in the toml file, you can set it by a CLI option. It's not so beautiful, but after all it lets you basically the same benefits as those you wanted from the env variables.

[ashtonian]

An example found digging in the docs, using flags in case anyone has trouble finding it. https://docs.traefik.io/v1.7/user-guide/cluster-docker-consul/

version: "3"
services:
  traefik:
    image: traefik:1.7
    command:
      - "--api"
      - "--entrypoints=Name:http Address::80 Redirect.EntryPoint:https"
      - "--entrypoints=Name:https Address::443 TLS"
      - "--defaultentrypoints=http,https"
      - "--acme"
      - "--acme.storage=/etc/traefik/acme/acme.json"
      - "--acme.entryPoint=https"
      - "--acme.httpChallenge.entryPoint=http"
      - "--acme.onHostRule=true"
      - "--acme.onDemand=false"
      - "--acme.email=contact@mydomain.ca"
      - "--docker"
      - "--docker.swarmMode"
      - "--docker.domain=mydomain.ca"
      - "--docker.watch"

[dantebarba]

An example found digging in the docs, using flags in case anyone has trouble finding it. https://docs.traefik.io/v1.7/user-guide/cluster-docker-consul/

version: "3"
services:
  traefik:
    image: traefik:1.7
    command:
      - "--api"
      - "--entrypoints=Name:http Address::80 Redirect.EntryPoint:https"
      - "--entrypoints=Name:https Address::443 TLS"
      - "--defaultentrypoints=http,https"
      - "--acme"
      - "--acme.storage=/etc/traefik/acme/acme.json"
      - "--acme.entryPoint=https"
      - "--acme.httpChallenge.entryPoint=http"
      - "--acme.onHostRule=true"
      - "--acme.onDemand=false"
      - "--acme.email=contact@mydomain.ca"
      - "--docker"
      - "--docker.swarmMode"
      - "--docker.domain=mydomain.ca"
      - "--docker.watch"

What happens if I just want to replace acme.email for example and keep using the rest of the toml file?. Can I just set --acme.email and it will override the toml?

[traefiker]

Closed by #4935.