Preparing a Docker host

It is assumed that we are already familiar on how to set up a Docker host. For most of the chapters of this book, we will run against the following environment unless mentioned explicitly:

Operating System: CentOS 7.5
Docker version: 18.09.0

The following commands display the operating system and Docker Engine version running inside our Docker host:

$ ssh dockerhost
dockerhost$ lsb_release -a
LSB Version: :core-4.1-amd64:core-4.1-noarch
Distributor ID:    CentOS
Description: CentOS Linux release 7.5.1804 (Core)
Release:    7.5.1804
Codename:   Core
dockerhost$ docker version
 Version:           18.09.0
 API version:       1.39
 Go version:        go1.10.4
 Git commit:        4d60db4
 Built:             Wed Nov  7 00:48:22 2018
 OS/Arch:           linux/amd64
 Experimental:      false

Server: Docker Engine - Community
 Engine:
  Version:          18.09.0
  API version:      1.39 (minimum version 1.12)
  Go version:       go1.10.4
  Git commit:       4d60db4
  Built:            Wed Nov  7 00:19:08 2018
  OS/Arch:          linux/amd64
  Experimental:     false

If we haven't set up our Docker environment, we can follow the instructions in the Docker website found in https://docs.docker.com/install/linux/docker-ce/centos/ to prepare our Docker host.

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Docker High Performance（Second Edition）

Preparing a Docker host