A few weeks ago I wrote a short article, networking basics with docker.
Since then, I’ve migrated my production environment to be docker only, and I’ve deployed 5 docker hosts which handle various tasks, from
a production file server, search server with solr, my complete development environment and some websites (including this one!).
Over the course of a week I was hitting a few timeouts in connecting from one docker container to another, and finally, yesterday I
consistently pinpointed a 4+ second delay on an API service I was writing. Four seconds. I’ll go over the steps that I took to
diagnose and resolve the issue.