![]() Port Detection ¶ĭocker Swarm does not provide any port detection information to Traefik. ![]() This behavior is only enabled for docker-compose version 3+ ( Compose file reference). Therefore, if you use a compose file with Swarm Mode, labels should be defined in the While in Swarm Mode, Traefik uses labels found on services, not on individual containers. To enable Docker Swarm (instead of standalone Docker) as a configuration provider, Traefik issue GH-4174 about security with Docker socket.A thread on Stack Overflow about sharing the /var/run/docker.sock file.Don't expose the Docker socket (not even to a container). ![]() KubeCon EU 2018 Keynote, Running with Scissors, from Liz Rice.Traefik and Docker: A Discussion with Docker Captain, Bret Fisher."Paranoid about mounting /var/run/docker.sock?".SSH public key authentication (SSH is supported with Docker > 18.09).Accounting at kernel level, by enforcing kernel calls with mechanisms like SELinux, to only allows an identified set of actions for Traefik's process (or the "socket exposer" process).With Swarm mode, it allows scheduling of Traefik on worker nodes, with only the "socket exposer" container on the manager nodes. Accounting at container level, by exposing the socket on a another container than Traefik's.Accounting at networking level, by exposing the socket only inside a Docker private network, only available for Traefik.Authorization with the Docker Authorization Plugin Mechanism.Authorize and filter requests to restrict possible actions with the TecnativaDocker Socket Proxy.Authentication with Client Certificates as described in "Protect the Docker daemon socket.".It allows different implementation levels of the AAA (Authentication, Authorization, Accounting) concepts, depending on your security assessment: only trusted users should be allowed to control your Docker daemon SolutionsĮxpose the Docker socket over TCP or SSH, instead of the default Unix socket file. You can specify which Docker API Endpoint to use with the directive endpoint. Traefik requires access to the docker socket to get its dynamic configuration. Traefik will use the IPv4 container IP before its IPv6 counterpart. When using a docker stack that uses IPv6, The bridge interface ( docker0 by default): -add-host=:172.17.0.1 IPv4 & IPv6 ¶ For example, to set it to the IP address of On Linux, for versions of Docker older than 20.10.0, for to be defined, it should be providedĪs an extra_host to the Traefik container, using the -add-host flag. if that lookup was also unsuccessful, fall back to 127.0.0.1.if the lookup was unsuccessful, try a lookup of, ( Podman equivalent of ).The IP address of the host is resolved as follows: When exposing containers that are configured with host networking, (Read more on this label in the dedicated section in routing). Or does not expose any port, then you must manually specify which port Traefik should use for communicationīy using the label .server.port Then Traefik uses this port for private communication. Traefik retrieves the private IP and port of containers from the Docker API. ![]() That is able to define a Docker container with labels can work Please note that any tool like Nomad, Terraform, Ansible, etc.
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