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Visualizing a Docker Swarm Cluster

Goal In a previous blog post I setup a docker swarm cluster. Now I want a way to visualize what the swarm cluster looks like. How many nodes I have and which containers are running. Also as I change the state of the swarm cluster through docker commands I’d like to visualize what is actually happening. The solution There is a docker image named dockersamples/visualizer that will give you a url that you can go to in order to view your swarm cluster.

Three Node Docker Swarm with Ubuntu Zesty 17.04 on Azure

Overview I’m learning docker swarm mode and need a realistic simulation of setting up a multi-node cluster. Azure is an ideal platform to test things out. My goal is to create a docker swarm cluster within a single region. Creating a multi-region swarm cluster requires creating virutal networks in different regions and connecting those vnets through a vpn gateway which is not something I’m ready to tackle just yet.

Showing UTF8 Characters in TeamCity 10 Build Logs

As part of a continuous integration pipeline I’m running my Postman api tests after every deployment to our development environment via TeamCity and Newman. One issue that I encountered was that the TeamCity agent build log wasn’t showing formatted newman output correctly because by default it doesn’t show UTF8. In order to fix this you just have to update your C:\TeamCity\buildAgent\conf\buildAgent.properties file to include teamcity.runner.commandline.stdstreams.encoding=UTF-8 and then restart the TeamCity Agent service.