Shulou(Shulou.com)05/31 Report--

This article introduces the relevant knowledge of "how to use Traefik". In the operation of actual cases, many people will encounter such a dilemma, so let the editor lead you to learn how to deal with these situations. I hope you can read it carefully and be able to achieve something!

Traefik is a http reverse proxy and load balancing software that makes it easier for you to expose microservices. Traefik supports K8S, docker swarm, mesos, consul, etcd, zookeeper and other infrastructure components. I think it is more suitable for containerized micro-services. The configuration of traefik will update itself automatically and dynamically.

Scene

This article mainly simulates the scene of traefik+docker swarm mode, and traefik automatically discovers the service under swarm mode.

Environment ubuntu16.04-1swarm managertraefikubuntu16.04-2swarm worksubuntu16.04-3swarm works

Ps: or the swarm cluster where the previous article did the experiment.

Download traefikwget 'https://github-production-release-asset-2e65be.s3.amazonaws.com/42408804/b7288f00-a48e-11e8-817e-298aa1a8bae9?X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=AKIAIWNJYAX4CSVEH53A%2F20180903%2Fus-east-1%2Fs3%2Faws4_request&X-Amz-Date=20180903T065922Z&X-Amz-Expires=300&X-Amz-Signature=4d4a6a61122a5e0ac8aaae5da30883d555db307c2a9dbe1e300fb1dc2decb0a2&X-Amz-SignedHeaders=host&actor_id=12913767&response-content-disposition=attachment%3B%20filename%3Dtraefik_linux-amd64&response-content-type=application%2Foctet-stream'

Ps: rename the downloaded traefik_linux-amd64 binary file to traefik and upload it to the image creation server.

Mirror image production

Dockfile

FROM scratchCOPY. / traefik / EXPOSE 80ENTRYPOINT ["/ traefik"] compiles imagedocker build-t traefik. Upload image

Docker tag traefik 172.31.68.241/library/traefikdocker push 172.31.68.241/library/traefik deploys traefik to create network docker network create-- driver=overlay traefik-net

Ps:traefik and app must be in the same network, otherwise traefik will not recognize app

Deploy traefikdocker service create\-- name traefik\-- constraint=node.role==manager\-- publish 8090 docker.watch 80-- publish 8080\-- mount type=bind,source=/var/run/docker.sock,target=/var/run/docker.sock\-- network traefik-net\ 172.31.68.241/library/traefik\-- docker\-- docker.swarmMode\-- docker.domain=example.org\-- docker.watch\-- logLevel=DEBUG\-- web

View web http://172.31.68.241:8080/dashboard/

Visit appdocker service create-- replicas 2-- network traefik-net-- label traefik.port=80-- label traefik.frontend.rule=Host:test.example.org-- name hello 172.31.68.241/library/friendlyhello during rotation training

Verify curl-H Host:test.example.org http://172.31.68.241:8090

Session sticky access appdocker service create-replicas 2-network traefik-net-label traefik.port=80-label traefik.frontend.rule=Host:test.example.org-label traefik.backend.loadbalancer.sticky=true-name hello 172.31.68.241/library/friendlyhello

Verify curl-c cookies.txt-H Host:test.example.org http://172.31.68.241:8090curl-b cookies.txt-H Host:test.example.org http://172.31.68.241:8090

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