Troubleshooting Tips for Docker Swarm and Universal Control Plane

Learn troubleshooting techniques from a Docker Support Engineer in this 38-minute conference talk. Discover how to effectively use Docker Swarm and Universal Control Plane to maintain smooth-running applications with minimal downtime. Gain insights on asking better questions, identifying real problems, and utilizing command-line tools to inspect internal Swarm components. Explore debugging methods for Enterprise Edition component interactions and apply these skills to troubleshooting both Docker CE and EE. Dive into topics such as SSH, X Socket, Docker logs, UCP support dumps, network namespaces, and Swarm overlay networks. Master the scientific method for problem-solving, learn about helpful resources like the Docker API Browser and GitHub Advanced Search, and understand where to seek assistance within the Docker community.

Syllabus

Introduction
Problem Solving
Time
What is Troubleshooting
The Scientific Method
Where do we start
SSH
X Socket
XY Problem
Docker logs metrics
docker service logs
UCP support dump
What is in the support dump
UCP GUI
Hypothesis Testing
Netshoot Container
Create an Overlay Network
Create a Busybox Container
Examine Network Namespace
Examine Network Config
VX LAN
Neighbor Table
Standard Troubleshooting Tools
Swarm Overlay Networks
Docker API Browser
GitHub Advanced Search
Testing Theories
Unhelpful Questions
My Docker File
Scientific Method
Where to Ask for Help
Community Slack
Knowledgebase
Handson labs
Docker selfie