Docker CE is a great way to get started using the Docker engine. It is free and open source, but provides a high-quality container runtime. This lab will help you practice the steps involved in installing and configuring the Docker Engine. You will practice installing Docker CE and configuring a logging driver. This lab will help provide you with some basic insight into how the Docker Engine is installed and configured on systems in the real world.
Learning Objectives
Successfully complete this lab by achieving the following learning objectives:
- Install Docker CE on the Server
Make sure old versions of Docker are not present on the system:
sudo apt-get remove docker docker-engine docker.io containerd runc
Update the apt package index and install the packages needed for apt to use a repository over HTTPS:
sudo apt update -y sudo apt install -y ca-certificates curl gnupg
Add the official Docker GPG key.
Set up the repository.
Install Docker packages.
Verify that your installation is working.
- Give cloud_user Access to Run Docker Commands
Make sure the
docker
group was created:sudo groupadd docker
Add your user to the
docker
group:sudo usermod -aG docker $USER
Either log out and back in as the
cloud_user
, or run this command:newgrp docker
After logging back in or executing the mentioned command, verify the access for the
cloud_user
.
- Set the Default Logging Driver to syslog
Edit
daemon.json
:sudo vi /etc/docker/daemon.json
Add configuration to
daemon.json
to set the default logging driver:{ "log-driver": "syslog" }
Restart Docker:
sudo systemctl restart docker
Verify that the logging driver was set properly:
docker info | grep Logging
This command should return a line that says:
Logging Driver: syslog
Additionally, you can configure Docker to start on boot.