「CentOS Stream 8」dockerをインストールする方法

2021年3月16日

1.リポジトリを追加
# dnf config-manager –add-repo https://download.docker.com/linux/centos/docker-ce.repo
repo の追加: https://download.docker.com/linux/centos/docker-ce.repo

2.リポジトリ確認

repo id                                                repo の名前
AdoptOpenJDK                                           AdoptOpenJDK
appstream                                              CentOS Stream 8 - AppStream
baseos                                                 CentOS Stream 8 - BaseOS
docker-ce-stable                                       Docker CE Stable - x86_64
elasticsearch-7.x                                      Elasticsearch repository for 7.x packages
epel                                                   Extra Packages for Enterprise Linux 8 - x86_64
epel-modular                                           Extra Packages for Enterprise Linux Modular 8 - x86_64
extras                                                 CentOS Stream 8 - Extras
jenkins                                                Jenkins-stable
nginx-stable                                           nginx stable repo

3.dockerをインストール
# dnf install docker-ce
# dnf install –nobest docker-ce
# dnf install –allowerasing docker-ce

4.dockerバージョン確認
# docker –version
Docker version 20.10.5, build 55c4c88

5.自動起動を有効にする
# systemctl enable docker
Created symlink /etc/systemd/system/multi-user.target.wants/docker.service → /usr/lib/systemd/system/docker.service.
# systemctl start docker
# systemctl status docker
● docker.service – Docker Application Container Engine
Loaded: loaded (/usr/lib/systemd/system/docker.service; enabled; vendor preset: disabled)
Active: active (running) since Tue 2021-03-16 19:32:32 JST; 40s ago
Docs: https://docs.docker.com
Main PID: 20042 (dockerd)