https://chengl.com/tags/swarm/Recent content in Swarm on Random MusingsHugoen-usCheng LongSun, 30 Jul 2017 09:03:09 +0000https://chengl.com/post/orchestrating-docker-using-swarm/Fri, 15 Apr 2016 09:01:00 +0000https://chengl.com/post/orchestrating-docker-using-swarm/<p>With <a href="https://blog.docker.com/2015/11/docker-multi-host-networking-ga/">multi-host networking ready for production</a> and <a href="https://blog.docker.com/2015/11/swarm-1-0/">the announcement of Swarm 1.0</a>, I think it&rsquo;s time to give Docker a serious try. This post details the steps I took to orchestrate a multi-host and multi-container app.</p> <h3 id="architecture">Architecture</h3> <p><img src="https://chengl.com/content/images/2017/07/Screen-Shot-2016-04-15-at-12-57-55-AM.png" alt="Screen-Shot-2016-04-15-at-12-57-55-AM"></p> <p>This is a simple Node app that uses Redis as database, load balanced by Nginx. Each blue box is a Docker host, which runs several containers. All hosts talk to Consul for service discovery. The cluster has 5 nodes, each serves a specific purpose. We want to easily scale up and down the number of <code>app</code> containers.</p>