[Container 시리즈] 01. 도커를 설치하고 실행해보자! Docker on Amazon Linux

Container, Kubernetes

[Container 시리즈] 01. 도커를 설치하고 실행해보자! Docker on Amazon Linux

KB.SEO 2020. 4. 24. 17:19

기존에 테스트용으로 사용하던 서버위에 설치

서버 환경 : Amazon Linux 2

서버 스펙 : t3.micro

안녕하세요 저번시간에 Container와 Docker에 대해서 간략하게 알아보는 시간을 가졌는데요

지난 시간 글 https://kbseo.tistory.com/7 [Container 시리즈] 00. Container/ Docker란 뭔가요?

아무래도 엔지니어분들은 직접 명령어를 쳐야 몸이 풀리기때문에

도커 설치하는 법 부터 가져왔습니다!

자 한번 설치를 시작해볼까요???

1. 테스트 서버를 오랜만에 접속해서 업데이트를 먼저 해줍니다.

$ sudo yum -y upgrade

[ec2-user@ip-172-20-1-221 ~]$ sudo yum -y upgrade
Loaded plugins: extras_suggestions, langpacks, priorities, update-motd
amzn2-core | 2.4 kB 00:00:00
amzn2extra-docker | 1.3 kB 00:00:00
Resolving Dependencies
--> Running transaction check
---> Package amazon-ssm-agent.x86_64 0:2.3.662.0-1.amzn2 will be updated
---> Package amazon-ssm-agent.x86_64 0:2.3.714.0-1.amzn2 will be an update
---> Package at.x86_64 0:3.1.13-23.amzn2 will be updated

...

sysstat.x86_64 0:10.1.5-18.amzn2.0.1 systemd.x86_64 0:219-57.amzn2.0.12
systemd-libs.x86_64 0:219-57.amzn2.0.12 systemd-sysv.x86_64 0:219-57.amzn2.0.12
systemtap-runtime.x86_64 0:4.2-1.amzn2.0.1 tcpdump.x86_64 14:4.9.2-4.amzn2.1
yum.noarch 0:3.4.3-158.amzn2.0.3

Replaced:
kpatch.noarch 0:0.4.0-3.amzn2 rpm-python.x86_64 0:4.11.3-25.amzn2.0.3

Complete!

2. Docker를 설치해볼차례!

$ sudo amazon-linux-extras install -y docker

[ec2-user@ip-172-20-1-221 ~]$ sudo amazon-linux-extras install -y docker
Installing docker
Loaded plugins: extras_suggestions, langpacks, priorities, update-motd
Cleaning repos: amzn2-core amzn2extra-docker
10 metadata files removed
4 sqlite files removed
0 metadata files removed
Loaded plugins: extras_suggestions, langpacks, priorities, update-motd
amzn2-core | 2.4 kB 00:00:00
amzn2extra-docker | 1.3 kB 00:00:00
(1/4): amzn2-core/2/x86_64/updateinfo | 187 kB 00:00:00
(2/4): amzn2-core/2/x86_64/group_gz | 2.5 kB 00:00:00

...

===================================================================================================================================
Package Arch Version Repository Size
===================================================================================================================================
Installing:
docker x86_64 18.09.9ce-2.amzn2 amzn2extra-docker 30 M
Installing for dependencies:
containerd x86_64 1.2.6-1.amzn2 amzn2extra-docker 20 M
libcgroup x86_64 0.41-21.amzn2 amzn2-core 66 k
pigz x86_64 2.3.4-1.amzn2.0.1 amzn2-core 81 k
runc x86_64 1.0.0-0.1.20190510.git2b18fe1.amzn2 amzn2extra-docker 2.0 M

Transaction Summary
===================================================================================================================================
Install 1 Package (+4 Dependent packages)

Total download size: 51 M
Installed size: 214 M
Downloading packages:
(1/5): libcgroup-0.41-21.amzn2.x86_64.rpm | 66 kB 00:00:00
(2/5): pigz-2.3.4-1.amzn2.0.1.x86_64.rpm | 81 kB 00:00:00
(3/5): containerd-1.2.6-1.amzn2.x86_64.rpm | 20 MB 00:00:00
(4/5): runc-1.0.0-0.1.20190510.git2b18fe1.amzn2.x86_64.rpm | 2.0 MB 00:00:00
(5/5): docker-18.09.9ce-2.amzn2.x86_64.rpm | 30 MB 00:00:00
-----------------------------------------------------------------------------------------------------------------------------------
Total 75 MB/s | 51 MB 00:00:00

...


[ =1.8.0_192 =1.8.0_202 =1.8.0_212 =1.8.0_222 =1.8.0_232
=1.8.0_242 ]
28 firecracker available [ =0.11 ]
29 golang1.11 available \
[ =1.11.3 =1.11.11 =1.11.13 ]
30 squid4 available [ =4 ]
31 php7.3 available \
[ =7.3.2 =7.3.3 =7.3.4 =7.3.6 =7.3.8 =7.3.9 =7.3.10
=7.3.11 =7.3.13 ]
32 lustre2.10 available [ =2.10.5 =2.10.8 ]
33 java-openjdk11 available [ =11 ]
34 lynis available [ =stable ]
35 kernel-ng available [ =stable ]
36 BCC available [ =0.x ]
37 mono available [ =5.x ]
38 nginx1 available [ =stable ]
39 ruby2.6 available [ =2.6 ]
40 mock available [ =stable ]
41 postgresql11 available [ =11 ]
[ec2-user@ip-172-20-1-221 ~]$

# 버전확인
[ec2-user@ip-172-20-1-221 ~]$ docker --version
Docker version 18.09.9-ce, build 039a7df
[ec2-user@ip-172-20-1-221 ~]$

3. 설치를 했으니 돌려봅시다.

$ sudo systemctl start docker

[ec2-user@ip-172-20-1-221 ~]$ sudo systemctl start docker

[ec2-user@ip-172-20-1-221 ~]$ ps -ef | grep docker
root 22846 1 1 08:23 ? 00:00:00 /usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock --default-ulimit nofile=1024:4096
ec2-user 23025 4157 0 08:23 pts/0 00:00:00 grep --color=auto docker

4. ec2-user에게 권한을..

$ sudo usermod -aG docker ec2-user

[ec2-user@ip-172-20-1-221 ~]$ sudo systemctl start docker

[ec2-user@ip-172-20-1-221 ~]$ ps -ef | grep docker
root 22846 1 1 08:23 ? 00:00:00 /usr/bin/dockerd -H fd:// --containerd=/run/containerd/containerd.sock --default-ulimit nofile=1024:4096
ec2-user 23025 4157 0 08:23 pts/0 00:00:00 grep --color=auto docker

# 적용을 위하여 다시 ssh 재접속을 합니다
# exit로 나간뒤 접속 ㄱㄱ
# sudo 명령어 없이 실행해봅니다.

[ec2-user@ip-172-20-1-221 ~]$ docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
[ec2-user@ip-172-20-1-221 ~]$

+ 번외로 docker는 Server-Client 구조입니다.

# docker verision으로 각각의 버전확인 가능
[kbseo@ip-172-20-1-221 ~]$ docker version
Client:
Version: 18.09.9-ce
API version: 1.39
Go version: go1.10.3
Git commit: 039a7df
Built: Fri Nov 1 19:26:49 2019
OS/Arch: linux/amd64
Experimental: false

Server:
Engine:
Version: 18.09.9-ce
API version: 1.39 (minimum version 1.12)
Go version: go1.10.3
Git commit: 039a7df
Built: Fri Nov 1 19:28:24 2019
OS/Arch: linux/amd64
Experimental: false

설치를 완료하였으니

본격적으로 도커 사용법에 대해 알아보도록 하겠습니다!

다음 글에서 계속할께요....