{"id":1260,"date":"2022-10-06T07:43:52","date_gmt":"2022-10-06T07:43:52","guid":{"rendered":"https:\/\/mklasen.com\/?p=1260"},"modified":"2022-10-06T07:44:07","modified_gmt":"2022-10-06T07:44:07","slug":"make-a-service-available-on-a-different-port-in-docker-compose-with-traefik","status":"publish","type":"post","link":"https:\/\/mklasen.com\/make-a-service-available-on-a-different-port-in-docker-compose-with-traefik\/","title":{"rendered":"Make a service available on a different port in docker-compose with Traefik"},"content":{"rendered":"\n<p>This is one of these things that I broke my head around a couple of times. And every time I need to do this, it takes me a fair amount of trial and error before solving it. <strong>Let&#8217;s get that over once and for all.<\/strong><\/p>\n\n\n\n<p><em>(seriously, i&#8217;ll probably Google for this issue in about 6 months and find my own blog article)<\/em><\/p>\n\n\n\n<p>Alright, so in this specific situation, I want to make my mailhog service available with a custom domain, that way, I can just type &#8216;mail.c7&#8217; in the address bar and see e-mails of all my docker containers coming in. Great for testing purposes!<\/p>\n\n\n\n<p>There&#8217;s a couple of rules we need to set for this, but let&#8217;s first have a look a the full docker-compose file:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>version: \"3\"\n\nservices:\n  catchall:\n    container_name: catchall\n    image: mailhog\/mailhog:latest\n    user: \"1000:1000\"\n    logging:\n      driver: 'none'  # disable saving logs\n    expose:\n      - 8025\n      - 1025\n    labels:\n      - \"traefik.enable=true\"\n      - \"traefik.docker.network=traefik_proxy\"\n      - \"traefik.http.routers.mail.rule=Host(`mail.c7`)\"\n      - \"traefik.http.routers.mail.tls=true\"\n      - \"traefik.http.services.mail.loadbalancer.server.port=8025\"\n    restart: always\n\nnetworks:\n  default:\n    external:\n      name: traefik_proxy<\/code><\/pre>\n\n\n\n<p>You can probably guess which rules are of importance here, it&#8217;s these ones:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>      - \"traefik.enable=true\"\n      - \"traefik.docker.network=traefik_proxy\"\n      - \"traefik.http.routers.mail.rule=Host(`mail.c7`)\"\n      - \"traefik.http.routers.mail.tls=true\"\n      - \"traefik.http.services.mail.loadbalancer.server.port=8025\"<\/code><\/pre>\n\n\n\n<p>But, most importantly, it&#8217;s the loadbalancer one. So, Mailhog makes the web interface available via 8025. By setting the loadbalancer rule and defining port 8025, we make the service available for http\/https traffic.<\/p>\n\n\n\n<p>Mind that it&#8217;s important to use the same name for the routers and services, we&#8217;re using <strong>mail<\/strong> in the example above.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">The Traefik docker-compose file<\/h2>\n\n\n\n<p>The blog wouldn&#8217;t be complete with an example of the main Traefik docker-compose file, you&#8217;ll find it below:<\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>version: \"3.3\"\n\nservices:\n\n  traefik:\n    image: \"traefik:v2.8\"\n    container_name: \"traefik\"\n    restart: always\n    command:\n      #- \"--log.level=DEBUG\"\n      - \"--api.insecure=true\"\n      - \"--providers.docker=true\"\n      - \"--providers.docker.exposedbydefault=false\"\n      - '--providers.docker.watch=true'\n      - \"--providers.file.directory=\/etc\/traefik\"\n      - \"--entrypoints.websecure.address=:443\"\n      - \"--entrypoints.web.address=:80\"\n      - \"--entrypoints.web.http.redirections.entryPoint.to=websecure\"\n      - \"--entrypoints.web.http.redirections.entryPoint.scheme=https\"\n      - \"--entrypoints.web.http.redirections.entrypoint.permanent=true\"\n    ports:\n      - \"80:80\"\n      - \"443:443\"\n      - \"8080:8080\"\n    volumes:\n      - \"\/var\/run\/docker.sock:\/var\/run\/docker.sock:ro\"\n      - \".\/certs:\/etc\/certs:ro\"\n      - \".\/config\/:\/etc\/traefik\/\"\n    networks:\n      default:\n        ipv4_address: 172.24.0.19\n\nnetworks:\n  default:\n    external:\n      name: traefik_proxy<\/code><\/pre>\n\n\n\n<p>Alright, hope that makes sense!<\/p>\n\n\n\n<p><strong>Happy developing!<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>This is one of these things that I broke my head around a couple of times. And every time I need to do this, it takes me a fair amount of trial and error before solving it. Let&#8217;s get that over once and for all. (seriously, i&#8217;ll probably Google for this issue in about 6 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_genesis_hide_title":false,"_genesis_hide_breadcrumbs":false,"_genesis_hide_singular_image":false,"_genesis_hide_footer_widgets":false,"_genesis_custom_body_class":"","_genesis_custom_post_class":"","_genesis_layout":"","footnotes":""},"categories":[1],"tags":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Make a service available on a different port in docker-compose with Traefik - Marinus Klasen<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/mklasen.com\/make-a-service-available-on-a-different-port-in-docker-compose-with-traefik\/\" \/>\n<meta property=\"og:locale\" content=\"nl_NL\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Make a service available on a different port in docker-compose with Traefik - Marinus Klasen\" \/>\n<meta property=\"og:description\" content=\"This is one of these things that I broke my head around a couple of times. 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