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Troubleshooting Docker

Troubleshooting Docker

By : Navid Ahmed Shaikh, Vaibhav Kohli, Dua, John Wooten
1 (1)
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Troubleshooting Docker

Troubleshooting Docker

1 (1)
By: Navid Ahmed Shaikh, Vaibhav Kohli, Dua, John Wooten
Buy this Book

Overview of this book

You?re pro Docker? You?ve read all about orchestration with Docker in books? Now learn how to troubleshoot Docker in practice. Gain all the tools to safely see Docker in action with this 2017 book.
Table of Contents (11 chapters)
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Preface
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Preface
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What this book covers
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What you need for this book
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Who this book is for
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Conventions
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Reader feedback
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Customer support
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1
1. Understanding Container Scenarios and an Overview of Docker
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1. Understanding Container Scenarios and an Overview of Docker
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Decoding containers
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Unikernels
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Summary
2
2. Docker Installation
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2. Docker Installation
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Installing Docker on Ubuntu
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Installing Docker on Red Hat Linux
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Deploy CentOS VM on AWS to run Docker containers
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Installing Docker on CoreOS
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Installing Docker on Fedora
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Installing Docker with script
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Installing Docker on SUSE Linux
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Summary
3
3. Building Base and Layered Images
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3. Building Base and Layered Images
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Building container images
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Image testing and debugging
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Automated image building
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Summary
4
4. Devising Microservices and N-Tier Applications
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4. Devising Microservices and N-Tier Applications
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Hype or hubris
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Monolithic architecture
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N-tier application architecture
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Microservices architecture
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Summary
5
5. Moving Around Containerized Applications
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5. Moving Around Containerized Applications
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Redistributing via Docker registry
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Pushing images to Docker Hub
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Docker Trusted Registry (DTR)
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Docker Universal Control Plane
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Summary
6
6. Making Containers Work
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6. Making Containers Work
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Privileged containers
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Super-privileged container
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Puppet
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Ansible
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Chef
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Summary
7
7. Managing the Networking Stack of a Docker Container
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7. Managing the Networking Stack of a Docker Container
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Docker networking
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docker0 bridge
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Configuring DNS
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Troubleshooting communication between containers and the external network
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libnetwork and the Container Network Model
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Docker networking tools based on overlay and underlay networks
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Configuring an overlay network with the Docker Engine swarm node
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Configuring OpenvSwitch (OVS) to work with Docker
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Summary
8
8. Managing Docker Containers with Kubernetes
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8. Managing Docker Containers with Kubernetes
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Deploying Kubernetes on Bare Metal machine
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Troubleshooting the Kubernetes Fedora manual setup
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Deploying Kubernetes using Minikube
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Deploying Kubernetes on AWS
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Deploying Kubernetes on vSphere
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Kubernetes setup troubleshooting
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Kubernetes pod deployment
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Deploying Kubernetes in a production environment
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Debugging Kubernetes issues
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Summary
9
9. Hooking Volume Baggage
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9. Hooking Volume Baggage
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Avoiding troubleshooting by understanding Docker volumes
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Default case storing data inside the Docker container
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Data-only container
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Host mapped volume backed up by shared storage
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Docker storage driver performance
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Summary
10
10. Docker Deployment in a Public Cloud - AWS and Azure
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10. Docker Deployment in a Public Cloud - AWS and Azure
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Architecture of Amazon ECS
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Troubleshooting - AWS ECS deployment
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Updating Docker containers in the ECS cluster
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Microsoft Azure container service architecture
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Troubleshooting - The Microsoft Azure Container Service
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Docker Beta for AWS and Azure
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Summary

Summary

In this chapter, we learnt how Docker networking is powered with docker0 bridge, its troubleshooting issues, and configuration. We also looked at troubleshooting the communication issues between Docker networks and the external network. Following that, we did some deep dive into libnetwork and the CNM and its life cycle. Then, we looked into containers' communication across multiple hosts using different networking options, such as Weave, OVS, Flannel, and Docker's latest overlay network, with comparison, and the troubleshooting issues involved in their configuration.

We saw that Weave creates a virtual network, OVS uses GRE tunneling technology, Flannel provides a separate subnet, and the Docker overlay sets up each host to connect containers on multiple hosts. After that, we looked into Docker network configuration with OVS and troubleshooting the single host and multiple host setup.

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