docker-traefik2-acme-host

Generalized Docker server stack modified to use Traefik v2.2 based on guidance in Traefik 2.0 + Docker -- a Simple Step by Step Guide. This project is culmination of several that came before it. Those earlier projects are documented, in chronological order, within the following posts:

Significant portions of this README.md file can be found in the capstone to this work, Host Config: docker-traefik2-acme-host.

Stack Contents

This project stack includes the following elements/services:

acme - A configured version of the neilpang/acme.sh image to obtain and manage the stack's TLS certificates.
traefik - A Traefik v2 reverse proxy to manage addressing and web traffic. Available at: https://[host]/dashboard/
portainer - A Portainer instance to provide Docker resource management for this host. Available at: https://[host]/portainer/
watchtower - A WatchTower instance to provide automatic updates of containers from images registered in this stack as they are pushed to DockerHub.
whoami - A simple WhoAmI instance provided as a sample for typical deployment. Available at: https://[host]/whoami/
landing-page - In September 2020 this project landed at https://dgdockerx.grinnell.edu where a landing page was added.

Note: As this project was pushed to https://dgdockerx.grinnell.edu I took steps to replace old `administrator@static...` references below with `islandora@dgdockerx...`.

Initial Use

This project is intended to serve as a template for creation and maintenance of an application stack on a Dockerized server or host. Follow these steps to deploy the project and create a new stack on any Linux (presumably Ubuntu or CentOS) server/host:

Open a terminal on the Linux server.
Set 'home' as your working directory.
- cd ~
- Note that instead of using your 'home' directory, you could choose /opt since that is where application stacks commonly exist in Linux. However, doing so will require that most of the following commands will have to be run with sudo or as root.
Clone this project to create a new host sub-directory in your working directory.
- git clone https://github.com/McFateM/docker-traefik2-acme-host host
- cd host
Visit the certs directory and review/edit the certs.toml file as necessary.
- cd certs
- nano certs.toml
Begin with acme and study any README.md or server-specific .md files there, like STATIC.md or DGDOCKERX.md.
- cd ../acme
- mdv README.md or mdv DGDOCKER3.md If mdv is not available use cat and substitute in the server-specifc name as necessary.
Copy any .env file needed for this service. In the case of acme it's probably necessary to do this:
- rsync -aruvi [email protected]:/home/administrator/host/acme/.env . --progress
  - For services other than acme you will need to change the corresponding portion of the target path.
- Verify that .env exists, open it and inspect, then change and save the contents if necessary.
- Edit other files as directed and perform the prescibed command(s) found in the README.md or equivalent.
Repeat the above process in each of the remaining directories, preferably in this order:
- traefik - cd ../traefik
- watchtower - cd ../watchtower
- portainer - cd ../portainer
- whoami - cd ../whoami

Additional Services

A server, host, or application stack running only the aforementioned elements is pretty mundane, so presumably there are more services destined for your host. Each new service will require its own sub-directory beneath ~/host with a docker-compose.yml file at a minimum. That file can be initially patterned after ~/host/whoami/docker-compose.yml since it contains most of the constructs that you are likely to need. You should also create a README.md file and be sure to include elements like those found at the top of ~/host/whoami/README.md.

Services typically either have a subdomain of their own, like https://rootstalk.grinnell.edu, or they use "path" addressing off of the server's root subdomain, like https://static.grinnell.edu/whoami/.

Path Addressing

If the service utilizes "path" addressing, such that it's URL ends with a /some-path/, like https://static.grinnell.edu/whoami/, then be sure you keep all of the "labels" found in docker-compose.yml. In such an instance it's unlikely that you need to add anything else since you probably do not need to modify the ./certs/certs.toml file.

Subdomain Addressing

If your service has a subdomain of its own, like https://rootstalk.grinnell.edu, then you can remove some of the "labels" for 'middleware' from docker-compose.yml, and keep just a simple "Host" label. However, you'll need to edit the service's fully qualified domain name (FQDN) into the ./certs/certs.toml file and it will have to appear in portions of the docker exec... command that you'll want to include in your README.md file.

Need More Info?

If you're struggling with the details of either scenario, send an email to [email protected] and ask for guidance or a working example.

Maintenance

Once you have your application stack up-and-running, routine maintenance should be pretty straightforward. All that generally required is that you make changes to a service and push the changes to DockerHub. Watchtower is typically engaged to monitor changes in each service's corresponding DockerHub repo and it will update containers in the stack with new images as they are posted.

If a service has to be modified and/or restarted otherwise, usually all that's necessary is to pull the changes into the appropriate service sub-directory, and issue a docker-compose up -d command there. The new service image should be pulled in and deployed as a service container as a result.

History

Much of what follows is OBSOLETE. It was lifted from some of this project's predecessor README.md files without modification in order to preserve some of the early history of this work.

At last check, 27-Apr-2020, the previous version of this project was used on:

https://static.grinnell.edu : Grinnell College hosted server
https://summittdweller.com : Personal DigitalOcean VPS (digital-ocean-containrrr branch)

On 30-Apr-2020 this project is being built for initial use on:

https://static.grinnell.edu : Grinnell College Libraries server for misc. "static" applications
- Host for https://static.grinnell.edu - The server landing page
- Host for https://vaf.grinnell.edu - The Visualizing Abolition and Freedom (VAF) static site
- Host for https://vaf-kiosk.grinnell.edu - The VAF kiosk site
- Host for https://rootstalk-static.grinnell.edu - The FUTURE Rootstalk e-zine site

As of 30-Apr-2020 the dashboards for GC's static.grinnell.edu server are:

The aforementioned guide, Traefik 2.0 + Docker -- a Simple Step by Step Guide, builds an environment destined to live in /opt/containers, and this project does the same.

EVERYTHING Below This Point is OBSOLETE

As of 10-June-2020... Do NOT use the following!

To Initialize the Host

The project and Traefik were initiated on static.grinnell.edu like so:

sudo su
docker stop $(docker ps -q); docker system prune --force
cd /opt
git clone https://github.com/McFateM/docker-traefik2-host containers
touch /opt/containers/traefik/data/acme.json
chmod 600 /opt/containers/traefik/data/acme.json
docker network create proxy
cd /opt/containers/traefik
docker-compose up -d

Adding Portainer

Lkewise on static.grinnell.edu:

sudo su
cd /opt/containers/portainer
docker-compose up -d

Note that successful configuration of the https://static.grinnell.edu/portainer address was gleaned from the post: Proxy Portainer under sub path.

Launching Application Stacks On static.grinnell.edu

@TODO: Modify the following for Traefik v2

# static.grinnell.edu - The server landing page: rewritten for Traefik v2
NAME=static-landing-page
HOST=static.grinnell.edu
IMAGE="mcfatem/static-landing"
docker container run -d --name static-landing-page \
    --label "traefik.enable=true" \
    --label "traefik.http.routers.static-landing-page.rule=Host('static.grinnell.edu') || (Host('static.grinnell.edu') && Path('/landing-page'))" \
    --label traefik.docker.network=proxy \
    --label traefik.port=80 \
    --label com.centurylinklabs.watchtower.enable=true \
    --network proxy \
    --restart always \
  mcfatem/static-landing

# vaf.grinnell.edu - The VAF site
docker container run -d --name vaf \
    --label traefik.backend=vaf \
    --label traefik.docker.network=web \
    --label "traefik.frontend.rule=Host:vaf.grinnell.edu" \
    --label traefik.port=80 \
    --label com.centurylinklabs.watchtower.enable=true \
    --network web \
    --restart always \
  mcfatem/vaf

# vaf-kiosk.grinnell.edu - The VAF kiosk site
docker container run -d --name vaf-kiosk \
    --label traefik.backend=vaf-kiosk \
    --label traefik.docker.network=web \
    --label "traefik.frontend.rule=Host:vaf-kiosk.grinnell.edu" \
    --label traefik.port=80 \
    --label com.centurylinklabs.watchtower.enable=true \
    --network web \
    --restart always \
  mcfatem/vaf-kiosk

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