问题
I am running a single node swarm, I am using traefik to manage all my external connections, and I want to run a registry such that I can connect to it at registry.myhost.com
Now all the examples I can see suggest creating a registry as a normal container rather than a service, however when I do this, I do not have the ability to add it to my traefik network and thus enable it to be found externally.
Do I need to create another internal network and connect both traefik and it to it, and if so, what type. Or do I need to run the registry as a service (I'm only on a single node so volume shouldnt be much of an issue).
And for bonus points, can anyone give me some pointers on how to set it up with s3 as a storage backend?
回答1:
Overview
You have two machines:
- Server: Your (single) Docker Swarm manager node that runs traefik and other Docker containers like the registry.
- Client: Another machine that should be able to connect to the registry and push Docker images to it.
I assume you have two certificate files:
registry.myhost.com.crt
registry.myhost.com.key
Server
Your server setup might look like this:
~/certs/registry.myhost.com.crt
~/certs/registry.myhost.com.key
~/docker-compose.yml
~/traefik.toml
docker-compose.yml
version: '3'
services:
frontproxy:
image: traefik
command: --api --docker --docker.swarmmode
ports:
- "80:80"
- "443:443"
volumes:
- ./certs:/etc/ssl:ro
- ./traefik.toml:/etc/traefik/traefik.toml:ro
- /var/run/docker.sock:/var/run/docker.sock # So that Traefik can listen to the Docker events
docker-registry:
image: registry:2
deploy:
labels:
- traefik.port=5000 # default port exposed by the registry
- traefik.frontend.rule=Host:registry.myhost.com
- traefik.frontend.auth.basic=user:$$apr1$$9Cv/OMGj$$ZomWQzuQbL.3TRCS81A1g/ # user:password, see https://docs.traefik.io/configuration/backends/docker/#on-containers
traefik.toml
defaultEntryPoints = ["http", "https"]
# Redirect HTTP to HTTPS and use certificate, see https://docs.traefik.io/configuration/entrypoints/
[entryPoints]
[entryPoints.http]
address = ":80"
[entryPoints.http.redirect]
entryPoint = "https"
[entryPoints.https]
address = ":443"
[entryPoints.https.tls]
[[entryPoints.https.tls.certificates]]
certFile = "/etc/ssl/registry.myhost.com.crt"
keyFile = "/etc/ssl/registry.myhost.com.key"
# Docker Swarm Mode Provider, see https://docs.traefik.io/configuration/backends/docker/#docker-swarm-mode
[docker]
endpoint = "tcp://127.0.0.1:2375"
domain = "docker.localhost"
watch = true
swarmMode = true
To deploy your registry run:
docker stack deploy myregistry -c ~/docker-compose.yml
Add Another Stack
If your service is not defined in the same docker-compose.yml as traefik you can use the (external) network of the traefik service:
version: '3'
services:
whoami:
image: emilevauge/whoami # A container that exposes an API to show its IP address
networks:
- frontproxy_default # add network of traefik service "frontproxy"
- default
deploy:
labels:
traefik.docker.network: frontproxy_default
traefik.frontend.rule: Host:whoami.myhost.com
traefik.frontend.auth.basic: user:$$apr1$$9Cv/OMGj$$ZomWQzuQbL.3TRCS81A1g/ # user:password, see https://docs.traefik.io/configuration/backends/docker/#on-containers
networks:
frontproxy_default:
external: true # network of traefik service "frontproxy" is defined in another stack
Make sure you add the certificate files of whoami.myhost.com
to traefik.toml:
[[entryPoints.https.tls.certificates]]
certFile = "/etc/ssl/registry.myhost.com.crt"
keyFile = "/etc/ssl/registry.myhost.com.key"
[[entryPoints.https.tls.certificates]]
certFile = "/etc/ssl/whoami.myhost.com.crt"
keyFile = "/etc/ssl/whoami.myhost.com.key"
or use a (single) wildcard certificate *.myhost.com
[[entryPoints.https.tls.certificates]]
certFile = "/etc/ssl/myhost.com.crt"
keyFile = "/etc/ssl/myhost.com.key"
See https://docs.traefik.io/configuration/entrypoints/ for further information.
Client
Copy registry.myhost.com.crt
on your client machine to /etc/docker/certs.d/registry.myhost.com/ca.crt
on Linux or
~/.docker/certs.d/registry.myhost.com/ca.crt
on Mac. Now you should be able to login from the client:
docker login -u user -p password registry.myhost.com
Copy an image from Docker Hub to your registry
On your client run:
docker pull hello-world:latest
docker tag hello-world:latest registry.myhost.com/hello-world:latest
docker push registry.myhost.com/hello-world:latest
Now you can pull this image on another machine (for example on the server):
docker pull registry.myhost.com/hello-world:latest
Don't forget to add registry.myhost.com.crt
on that client machine, too.
来源:https://stackoverflow.com/questions/49454278/how-to-use-a-private-registry-with-docker-swarm-and-traefik-in-docker