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by Master Seo Jun 13. 2021

쿠버1탄-2.  도커 시작 (선택)

우분트 에서 도커 만들어 보자


<1> AWS에 우분트  생성하기

<2> 도커  이미지와 컨테이너

<3> 도커 실행

<4> Apache 설치

<5> mysql 이미지 이용해 db 설치

<6> wordpress 이미지 이용해  web설치

<7> Windows 서버에 로그온해  웹브라우저로  ip:49153 포트 접속해보자.

<20>  도커,쿠버네티스 실습 - 2021

<30> 다음  공부 




<1> AWS에 우분트  생성하기


우분트 생성

도커 설치하자~


sudo su -

curl -fsSL https://download.docker.com/linux/ubuntu/gpg | sudo apt-key add -


sudo add-apt-repository "deb [arch=amd64] https://download.docker.com/linux/ubuntu $(lsb_release -cs) stable"


apt-get update

apt-get install docker-ce

// ce는 community edtion)


docker info


docker -v

root@ip-10-10-10-134:~# docker -v

Docker version 20.10.7, build f0df350



<2> 도커  이미지와 컨테이너


1

이미지 이름?

xxxx/ubuntu:14.04

저장소 이름 / 이미지 이름 / 이미지 버전 이다.


ubuntu::lastest

이미지 이름 : 이미지 버전이다.


2

도커 이미지로 여러개의 컨테이너를 만든다!


3

컨테이너를 만들어보자.



컨테이너 생성


 docker run -i -t ubuntu:14.04

root@ip-10-10-10-186:~#  docker run -i -t ubuntu:14.04

Unable to find image 'ubuntu:14.04' locally

14.04: Pulling from library/ubuntu

2e6e20c8e2e6: Pull complete

0551a797c01d: Pull complete

512123a864da: Pull complete

Digest: sha256:5c01e896fa6eeaa41f3509c64af668d71d06e318cfe373dabab9d61b9eaf6441

Status: Downloaded newer image for ubuntu:14.04


컨테이너 생성되고 컨테이너 내부로 로그인 되었다.

사용자와 호스트이름으로 표시되면  컨테이너라는 것이다.


root@be3714c54a7d:/# ls

bin  boot  dev  etc  home  lib  lib64  media  mnt  opt  proc  root  run  sbin  srv  sys  tmp  usr  var


// 호스트의 도커 환경으로 돌아오자.


root@be3714c54a7d:/# exit

exit


root@ip-10-10-10-186:~# ls

get-docker.sh  index.html  snap



4

docker images

root@ip-10-10-10-186:~# docker images

REPOSITORY   TAG       IMAGE ID       CREATED        SIZE

ubuntu       14.04     13b66b487594   2 months ago   197MB



정지 되지 않는 컨테이너만 보는 명령어 ?


docker ps

root@ip-10-10-10-186:~# docker ps

CONTAINER ID   IMAGE     COMMAND   CREATED   STATUS    PORTS     NAMES



정지 된 컨테이너도  보는 명령어 ?


docker ps -a

root@ip-10-10-10-186:~# docker ps -a

CONTAINER ID   IMAGE          COMMAND       CREATED         STATUS                     PORTS     NAMES

be3714c54a7d   ubuntu:14.04   "/bin/bash"   5 minutes ago   Exited (0) 4 minutes ago             eloquent_hopper




5

컨테이너  name 변경하기 ?


docker ps -a

CONTAINER ID   IMAGE          COMMAND       CREATED          STATUS                      PORTS     NAMES

be3714c54a7d   ubuntu:14.04   "/bin/bash"   14 minutes ago   Exited (0) 13 minutes ago             eloquent_hopper


docker rename  eloquent_hopper sss


docker ps -a

CONTAINER ID   IMAGE          COMMAND       CREATED          STATUS                      PORTS     NAMES

be3714c54a7d   ubuntu:14.04   "/bin/bash"   16 minutes ago   Exited (0) 14 minutes ago             sss


 Exited (0 ) 정상 죵료 상태  = 삭제가  가능하다.



6

컨테이너 삭제하기 ?


docker rm sss

sss


docker ps -a

CONTAINER ID   IMAGE     COMMAND   CREATED   STATUS    PORTS     NAMES

root@ip-10-10-10-186:~#



컨테이너  모두 삭제 ?


docker container prune

WARNING! This will remove all stopped containers.

Are you sure you want to continue? [y/N] y

Total reclaimed space: 0B



7

이미지 내려 받기, 도커 실행 ?


docker pull centos:7


docker run -i -t centos

exit


docker ps -a

CONTAINER ID   IMAGE     COMMAND       CREATED          STATUS                      PORTS     NAMES

b79656c05136   centos    "/bin/bash"   45 seconds ago   Exited (0) 14 seconds ago             nervous_keller


[root@a16303253417 /]# exit


root@ip-10-10-10-186:~# docker ps -a

CONTAINER ID   IMAGE     COMMAND       CREATED              STATUS         PORTS     NAMES

b79656c05136   centos    "/bin/bash"   About a minute ago   Up 3 seconds             nervous_keller



작동중인 컨테이너는 삭제 못한다.  ?


docker rm  nervous_keller

Error response from daemon: You cannot remove a running container b79656c05136ef82426325565a418a4383fdac6309e0a786823f96040476e8aa. Stop the container before attempting removal or force remove

root@ip-10-10-


중지후 삭제 가능하다. ?

docker stop b7

b7


docker ps -a

CONTAINER ID   IMAGE     COMMAND       CREATED         STATUS                     PORTS     NAMES

b79656c05136   centos    "/bin/bash"   4 minutes ago   Exited (0) 3 seconds ago             nervous_keller


docker rm b7

b7


docker ps -a

CONTAINER ID   IMAGE     COMMAND   CREATED   STATUS    PORTS     NAMES


8

모든 컨테이너 중지후 삭제 시키기


docker stop $(docker ps -a -q)

f70477614c15


docker rm $(docker ps -a -q)

f70477614c15


docker ps -a

CONTAINER ID   IMAGE     COMMAND   CREATED   STATUS    PORTS     NAMES

root@ip-10-10-10-134:~#



AWS에 ubuntu를 설치해 컨테이너를 만들어 보자.

확인을 위해 windows 서버도 1대 만들자.





<3> 도커 실행


sudo su -

root@ip-10-10-10-134:~# docker run -i -t --name network_test ubuntu:14.04


root@f41a0d7858c1:/# ifconfig

eth0      Link encap:Ethernet  HWaddr 02:42:ac:11:00:02

          inet addr:172.17.0.2  Bcast:172.17.255.255  Mask:255.255.0.0

          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

          RX packets:9 errors:0 dropped:0 overruns:0 frame:0

          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0

          collisions:0 txqueuelen:0

          RX bytes:806 (806.0 B)  TX bytes:0 (0.0 B)


lo        Link encap:Local Loopback

          inet addr:127.0.0.1  Mask:255.0.0.0

          UP LOOPBACK RUNNING  MTU:65536  Metric:1

          RX packets:0 errors:0 dropped:0 overruns:0 frame:0

          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0

          collisions:0 txqueuelen:1000

          RX bytes:0 (0.0 B)  TX bytes:0 (0.0 B)





<4> Apache 설치


root@ip-10-10-10-134:~# docker run -i -t --name web01 -p 80:80 ubuntu:14.04


apt-get update

apt-get install apache2 -y

service apache2 start


root@39946c9cbf90:/# ps -ef |grep apache

root       698     1  0 01:19 ?        00:00:00 /usr/sbin/apache2 -k start

www-data   700   698  0 01:19 ?        00:00:00 /usr/sbin/apache2 -k start

www-data   701   698  0 01:19 ?        00:00:00 /usr/sbin/apache2 -k start

root       763     1  0 01:20 pts/0    00:00:00 grep --color=auto apache


웹 브라우저로 접속 확인




<5>  mysql 이미지 이용해 db 설치


docker run -d --name wordpressdb -e MYSQL_ROOT_PASSWORD=password -e MYSQL_DATABASE=wordpress mysql:5.7


root@ip-10-10-10-134:~# docker ps

CONTAINER ID   IMAGE       COMMAND                  CREATED          STATUS         PORTS                 NAMES

378354f7ef32   mysql:5.7   "docker-entrypoint.s…"   10 seconds ago   Up 9 seconds   3306/tcp, 33060/tcp   wordpressdb



<6> wordpress 이미지 이용해  web설치


포트를 보면 80으로 접속

root@ip-10-10-10-134:~# docker run -d --name wordpressdb2 -e MYSQL_ROOT_PASSWORD=password --link wordpressdb:mysql -p 80 wordpress

89c4ea649cd6e74246a53567c7acb773e6a611b6b3399ea13c50e169d9f4956a


root@ip-10-10-10-134:~# docker ps

CONTAINER ID   IMAGE       COMMAND                  CREATED         STATUS         PORTS                                     NAMES

89c4ea649cd6   wordpress   "docker-entrypoint.s…"   8 seconds ago   Up 6 seconds   0.0.0.0:49153->80/tcp, :::49153->80/tcp   wordpressdb2

378354f7ef32   mysql:5.7   "docker-entrypoint.s…"   4 minutes ago   Up 4 minutes   3306/tcp, 33060/tcp                       wordpressdb

root@ip-10-10-10-134:~#


5

사용 포트 확인

root@ip-10-10-10-134:~# docker ps -a

CONTAINER ID   IMAGE          COMMAND                  CREATED          STATUS                        PORTS                                     NAMES

89c4ea649cd6   wordpress      "docker-entrypoint.s…"   6 minutes ago    Up 6 minutes                  0.0.0.0:49153->80/tcp, :::49153->80/tcp   wordpressdb2

378354f7ef32   mysql:5.7      "docker-entrypoint.s…"   10 minutes ago   Up 10 minutes                 3306/tcp, 33060/tcp                       wordpressdb

39946c9cbf90   ubuntu:14.04   "/bin/bash"              26 minutes ago   Exited (127) 10 minutes ago                                             web01

f41a0d7858c1   ubuntu:14.04   "/bin/bash"              28 minutes ago   Exited (127) 27 minutes ago                                             network_test


docker port 컨테이너 id 

root@ip-10-10-10-134:~# docker port 89c4ea649cd6

80/tcp -> 0.0.0.0:49153

80/tcp -> :::49153



<7> Windows 서버에 로그온해  웹브라우저로  ip:49153 포트 접속해보자.





다음

https://brunch.co.kr/@topasvga/1649





<20>  (정리) 도커,쿠버네티스 실습 - 2021


https://brunch.co.kr/@topasvga/1817



https://brunch.co.kr/@topasvga/1656




<30> 다음  공부 


https://brunch.co.kr/@topasvga/1649



감사합니다.


매거진의 이전글 쿠버1탄-1. 우분투에 도커 설치,컨테이너-2021
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