The steps shared here are for the installation of Docker CE on RHEL 7 Linux. Docker is the main dominant container runtime engine used for Development and running of micro-serviced applications in production. There are two editions of Docker available for installation on a RHEL 7 Desktop / Linux machine.
- Docker Community Edition ( Docker CE)
- Docker Enterprise Edition ( Docker EE)
This guide is for installation of the Docker Community Edition on RHEL 7. If you have interest in Docker Enterprise Edition, check its features and the key differences from Community edition.
So let’s install Docker CE on RHEL 7 Linux system.
Step 1: Register your RHEL 7 server
Start by registering your RHEL 7 server with Red Hat Subscription Management or Satellite server.
sudo subscription-manager register --auto-attachYou’ll be prompted to provide your Red Hat portal username and password.
Step 2: Enable required repositories
You need to enable the following repositories to install Docker Community Edition on RHEL 7. They contain a number of dependencies required to run Docker.
sudo subscription-manager repos --enable=rhel-7-server-rpms \
--enable=rhel-7-server-extras-rpms \
--enable=rhel-7-server-optional-rpmsStep 3: Install Docker CE on RHEL 7 Linux
Install required packages before adding the Docker CE Yum repository.
sudo yum install -y https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
sudo yum install -y yum-utils device-mapper-persistent-data lvm2Add stable Docker CE repository to your RHEL 7 system.
sudo yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repoFinally install latest release of Docker CE on RHEL 7 with the latest and containerd.
sudo yum install docker-ce docker-ce-cli containerd.ioIf you want to view all versions of Docker available, use:
$ sudo yum list docker-ce --showduplicates | sort -rStep 4: Start and enable Docker service
Now start and enable Docker service to start at boot.
sudo systemctl enable --now docker.serviceCheck docker version:
$ docker version
Client: Docker Engine - Community
Version: 20.10.13
API version: 1.41
Go version: go1.16.15
Git commit: a224086
Built: Thu Mar 10 14:09:51 2022
OS/Arch: linux/amd64
Context: default
Experimental: true
Server: Docker Engine - Community
Engine:
Version: 20.10.13
API version: 1.41 (minimum version 1.12)
Go version: go1.16.15
Git commit: 906f57f
Built: Thu Mar 10 14:08:16 2022
OS/Arch: linux/amd64
Experimental: false
containerd:
Version: 1.5.10
GitCommit: 2a1d4dbdb2a1030dc5b01e96fb110a9d9f150ecc
runc:
Version: 1.0.3
GitCommit: v1.0.3-0-gf46b6ba
docker-init:
Version: 0.19.0
GitCommit: de40ad0
Step 5: Set insecure registries / Block registries
If you have local Docker registries without SSL encryption for access, you may need to whitelist them.
$ sudo vim /etc/containers/registries.conf
[registries.insecure]
registries = ["reg1.example.com","reg2.example.com"]To block access to a registry, add the registry URL under registries.block section.
[registries.block]
registries = ['reg10.example.com']Restart docker service if you make a change to the configuration file.
sudo systemctl restart docker
Test Docker installation on RHEL 7.
$ docker run hello-world
Hello from Docker!
This message shows that your installation appears to be working correctly.
To generate this message, Docker took the following steps:
1. The Docker client contacted the Docker daemon.
2. The Docker daemon pulled the "hello-world" image from the Docker Hub.
(amd64)
3. The Docker daemon created a new container from that image which runs the
executable that produces the output you are currently reading.
4. The Docker daemon streamed that output to the Docker client, which sent it
to your terminal.
To try something more ambitious, you can run an Ubuntu container with:
$ docker run -it ubuntu bash
Share images, automate workflows, and more with a free Docker ID:
https://hub.docker.com/
For more examples and ideas, visit:
https://docs.docker.com/get-started/
Tags:
- Install Docker CE on RHEL 7
- Install Docker CE on RHEL 7 Linux
- Docker CE installation on RHEL 7
- Install Docker CE on RHEL 7 Server
- Install Docker CE on RHEL 7 Workstation
- Install Docker CE on RHEL 7 Desktop
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