Post

Docker Engine 설치

Posted Updated
By dejavuhyo 5 min read

1. 이전 버전 제거

이전 버전의 docker 또는 docker-engine이 설치되어있는 경우 관련 종속성과 함께 제거한다.

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[root@localhost ~]# yum remove docker
[root@localhost ~]# yum remove docker-client
[root@localhost ~]# yum remove docker-client-latest
[root@localhost ~]# yum remove docker-common
[root@localhost ~]# yum remove docker-latest
[root@localhost ~]# yum remove docker-latest-logrotate
[root@localhost ~]# yum remove docker-logrotate
[root@localhost ~]# yum remove docker-engine

/var/lib/docker/에 images, containers, volumes, and networks를 포함한 컨텐츠는 보존된다.

2. 설치 방법

필요에 따라 다양한 방법으로 Docker Engine을 설치할 수 있다.

1) 저장소

권장되는 방식으로 대부분 쉬운 설치 및 업그레이드를 위해 Docker 저장소를 설정하고 설치 한다.

2) RPM

RPM 패키지를 다운로드하여 수동으로 설치하고 업그레이드를 수동으로 관리한다. 인터넷에 액세스할 수 없는 시스템에 Docker를 설치하는 상황에서 유용하다.

3. 저장소를 사용하여 설치

1) yum 패키지 업데이트

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[root@localhost ~]# yum update

2) 유틸리티 패키지 설치

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[root@localhost ~]# yum install -y yum-utils

3) yum-config-manager 설정

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[root@localhost ~]# yum-config-manager --add-repo https://download.docker.com/linux/centos/docker-ce.repo
Loaded plugins: fastestmirror, langpacks
adding repo from: https://download.docker.com/linux/centos/docker-ce.repo
grabbing file https://download.docker.com/linux/centos/docker-ce.repo to /etc/yum.repos.d/docker-ce.repo
repo saved to /etc/yum.repos.d/docker-ce.repo

4) Docker Engine 설치

  • 최신 버전 Docker Engine 및 containerd 설치
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[root@localhost ~]# yum install docker-ce docker-ce-cli containerd.io

GPG 키를 수락하라는 메시지가 표시되면 지문이 일치하는지 확인하고, 060A 61C5 1B55 8A7F 742B 77AA C52F EB6B 621E 9F35 일치하는 경우 수락한다.

  • 특정 버전의 Docker Engine 설치
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[root@localhost ~]# yum list docker-ce --showduplicates | sort -r
docker-ce.x86_64            3:19.03.9-3.el7                    docker-ce-stable 
docker-ce.x86_64            3:19.03.8-3.el7                    docker-ce-stable 
docker-ce.x86_64            3:19.03.7-3.el7                    docker-ce-stable 
docker-ce.x86_64            3:19.03.6-3.el7                    docker-ce-stable 
docker-ce.x86_64            3:19.03.5-3.el7                    docker-ce-stable 
docker-ce.x86_64            3:19.03.4-3.el7                    docker-ce-stable 
docker-ce.x86_64            3:19.03.3-3.el7                    docker-ce-stable 
docker-ce.x86_64            3:19.03.2-3.el7                    docker-ce-stable 
docker-ce.x86_64            3:19.03.14-3.el7                   docker-ce-stable 
docker-ce.x86_64            3:19.03.14-3.el7                   @docker-ce-stable
docker-ce.x86_64            3:19.03.13-3.el7                   docker-ce-stable 
docker-ce.x86_64            3:19.03.12-3.el7                   docker-ce-stable 
docker-ce.x86_64            3:19.03.11-3.el7                   docker-ce-stable 
docker-ce.x86_64            3:19.03.10-3.el7                   docker-ce-stable 
docker-ce.x86_64            3:19.03.1-3.el7                    docker-ce-stable 
docker-ce.x86_64            3:19.03.0-3.el7                    docker-ce-stable 
docker-ce.x86_64            3:18.09.9-3.el7                    docker-ce-stable 
docker-ce.x86_64            3:18.09.8-3.el7                    docker-ce-stable 
docker-ce.x86_64            3:18.09.7-3.el7                    docker-ce-stable 
docker-ce.x86_64            3:18.09.6-3.el7                    docker-ce-stable 
docker-ce.x86_64            3:18.09.5-3.el7                    docker-ce-stable 
docker-ce.x86_64            3:18.09.4-3.el7                    docker-ce-stable 
docker-ce.x86_64            3:18.09.3-3.el7                    docker-ce-stable 
docker-ce.x86_64            3:18.09.2-3.el7                    docker-ce-stable 
docker-ce.x86_64            3:18.09.1-3.el7                    docker-ce-stable 
docker-ce.x86_64            3:18.09.0-3.el7                    docker-ce-stable 
docker-ce.x86_64            18.06.3.ce-3.el7                   docker-ce-stable 
docker-ce.x86_64            18.06.2.ce-3.el7                   docker-ce-stable 
docker-ce.x86_64            18.06.1.ce-3.el7                   docker-ce-stable 
docker-ce.x86_64            18.06.0.ce-3.el7                   docker-ce-stable 
docker-ce.x86_64            18.03.1.ce-1.el7.centos            docker-ce-stable 
docker-ce.x86_64            18.03.0.ce-1.el7.centos            docker-ce-stable 
docker-ce.x86_64            17.12.1.ce-1.el7.centos            docker-ce-stable 
docker-ce.x86_64            17.12.0.ce-1.el7.centos            docker-ce-stable 
docker-ce.x86_64            17.09.1.ce-1.el7.centos            docker-ce-stable 
docker-ce.x86_64            17.09.0.ce-1.el7.centos            docker-ce-stable 
docker-ce.x86_64            17.06.2.ce-1.el7.centos            docker-ce-stable 
docker-ce.x86_64            17.06.1.ce-1.el7.centos            docker-ce-stable 
docker-ce.x86_64            17.06.0.ce-1.el7.centos            docker-ce-stable 
docker-ce.x86_64            17.03.3.ce-1.el7                   docker-ce-stable 
docker-ce.x86_64            17.03.2.ce-1.el7.centos            docker-ce-stable 
docker-ce.x86_64            17.03.1.ce-1.el7.centos            docker-ce-stable 
docker-ce.x86_64            17.03.0.ce-1.el7.centos            docker-ce-stable 
Loading mirror speeds from cached hostfile
Loaded plugins: fastestmirror, langpacks
Installed Packages
Available Packages
 * updates: mirror.kakao.com
 * extras: mirror.kakao.com
 * base: mirror.kakao.com
  • 특정 버전 설치
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[root@localhost ~]# yum install docker-ce-<VERSION_STRING> docker-ce-cli-<VERSION_STRING> containerd.io

4. 패키지에서 설치

Docker의 저장소를 사용하여 Docker를 설치할 수 없는 경우 .rpm 릴리즈 파일을 다운로드하고 수동으로 설치할 수 있다. Docker Engine을 업그레이드할 때마다 새 파일을 다운로드해야 한다.

1) .rpm 파일 다운로드

https://download.docker.com/linux/centos/ CentOS 버전을 선택하고, 설치하려는 Docker 버전 x86_64/stable/Packages/ 경로의 .rpm 파일을 다운로드 한다.

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[root@localhost ~]# wget https://download.docker.com/linux/centos/7/x86_64/stable/Packages/containerd.io-1.3.9-3.1.el7.x86_64.rpm
[root@localhost ~]# wget https://download.docker.com/linux/centos/7/x86_64/stable/Packages/docker-ce-19.03.9-3.el7.x86_64.rpm
[root@localhost ~]# wget https://download.docker.com/linux/centos/7/x86_64/stable/Packages/docker-ce-cli-19.03.9-3.el7.x86_64.rpm

2) 설치

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[root@localhost ~]# yum install docker-ce-19.03.9-3.el7.x86_64.rpm

5. 실행 및 확인

1) 실행 및 등록

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[root@localhost ~]# systemctl start docker
[root@localhost ~]# systemctl enable docker
Created symlink from /etc/systemd/system/multi-user.target.wants/docker.service to /usr/lib/systemd/system/docker.service.

2) 버전 확인

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[root@localhost ~]# docker --version
Docker version 19.03.14, build 5eb3275d40

3) 정상 설치 확인

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[root@localhost ~]# docker run hello-world
Unable to find image 'hello-world:latest' locally
latest: Pulling from library/hello-world
0e03bdcc26d7: Pull complete 
Digest: sha256:e7c70bb24b462baa86c102610182e3efcb12a04854e8c582838d92970a09f323
Status: Downloaded newer image for hello-world:latest

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/

[출처 및 참고]

DevOps, Docker
docker-install docker-engine-install cnetos-docker-install centos-docker docker docker-설치 도커-설치 도커-엔진-설치
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