129 lines
4.7 KiB
YAML
129 lines
4.7 KiB
YAML
services:
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traefik:
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image: traefik:v3.4
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networks:
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# Connect to the 'traefik_proxy' overlay network for inter-container communication across nodes
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- traefik_proxy
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ports:
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# Expose Traefik's entry points to the Swarm
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# Swarm requires the long syntax for ports.
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- target: 80 # Container port (Traefik web entry point)
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published: 80 # Host port exposed on the nodes
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protocol: tcp
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# 'host' mode binds directly to the node's IP where the task runs.
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# 'ingress' mode uses Swarm's Routing Mesh (load balances across nodes).
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# Choose based on your load balancing strategy. 'host' is often simpler if using an external LB.
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mode: host
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- target: 443 # Container port ( Traefik websecure entry point)
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published: 443 # Host port
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protocol: tcp
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mode: host
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- target: 8080 # Container port (Traefik web entry point)
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published: 8080 # Host port exposed on the nodes
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protocol: tcp
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mode: host
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volumes:
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# Mount the Docker socket for the Swarm provider
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# This MUST be run from a manager node to access the Swarm API via the socket.
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- /var/run/docker.sock:/var/run/docker.sock:ro # Swarm API socket
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# - ./certs:/certs:ro
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# - ./dynamic:/dynamic:ro
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# Traefik Static configuration via command-line arguments
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command:
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# HTTP EntryPoint
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- "--entrypoints.web.address=:80"
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# Configure HTTP to HTTPS Redirection
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# - "--entrypoints.web.http.redirections.entrypoint.to=websecure"
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# - "--entrypoints.web.http.redirections.entrypoint.scheme=https"
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# - "--entrypoints.web.http.redirections.entrypoint.permanent=true"
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# HTTPS EntryPoint
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- "--entrypoints.websecure.address=:443"
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- "--entrypoints.websecure.http.tls=true"
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# Attach dynamic TLS file
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# - "--providers.file.filename=/dynamic/tls.yaml"
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# Providers
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# Enable the Docker Swarm provider (instead of Docker provider)
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- "--providers.swarm.endpoint=unix:///var/run/docker.sock"
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# Watch for Swarm service changes (requires socket access)
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- "--providers.swarm.watch=true"
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# Recommended: Don't expose services by default; require explicit labels
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- "--providers.swarm.exposedbydefault=false"
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# Specify the default network for Traefik to connect to services
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- "--providers.swarm.network=myappstack_traefik_proxy"
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# API & Dashboard
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- "--api.dashboard=true" # Enable the dashboard
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- "--api.insecure=true" # Explicitly disable insecure API mod
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# Observability
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- "--log.level=INFO" # Set the Log Level e.g INFO, DEBUG
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- "--accesslog=true" # Enable Access Logs
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- "--metrics.prometheus=true" # Enable Prometheus
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deploy:
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mode: replicated
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replicas: 1
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placement:
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# Placement constraints restrict where Traefik tasks can run.
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# Running on manager nodes is common for accessing the Swarm API via the socket.
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constraints:
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- node.role == manager
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# Traefik Dynamic configuration via labels
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# In Swarm, labels on the service definition configure Traefik routing for that service.
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labels:
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- "traefik.enable=true"
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# Dashboard router
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- "traefik.http.routers.dashboard.rule=PathPrefix(`/d2`)"
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- "traefik.http.routers.dashboard.entrypoints=web"
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- "traefik.http.middlewares.dashboard-stripprefix.stripprefix.prefixes=/d2"
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- "traefik.http.routers.dashboard.middlewares=dashboard-stripprefix"
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- "traefik.http.routers.dashboard.service=api@internal"
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- "traefik.http.routers.dashboard.tls=false"
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# Basic‑auth middleware
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# - "traefik.http.middlewares.dashboard-auth.basicauth.users=<PASTE_HASH_HERE>"
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# - "traefik.http.routers.dashboard.middlewares=dashboard-auth@swarm"
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# Service hint
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- "traefik.http.services.traefik.loadbalancer.server.port=8080"
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# Deploy the Whoami application
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whoami:
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image: traefik/whoami
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ports:
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- "8081:80"
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networks:
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- traefik_proxy
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deploy:
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labels:
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# Enable Service discovery for Traefik
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- "traefik.enable=true"
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# Define the Whoami router rule - match root path
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- "traefik.http.routers.whoami.rule=PathPrefix(`/whoami`)"
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# Expose Whoami on the HTTP entrypoint
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- "traefik.http.routers.whoami.entrypoints=web"
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- "traefik.http.middlewares.whoami-stripprefix.stripprefix.prefixes=/whoami"
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- "traefik.http.routers.whoami.middlewares=whoami-stripprefix"
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# Expose the whoami port number to Traefik
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- "traefik.http.services.whoami.loadbalancer.server.port=80"
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# Define the overlay network for Swarm
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networks:
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traefik_proxy:
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driver: overlay
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# attachable: true |