Docker cp 명령어, Docker Compose

*ETCD(Discovery Service)에서 IP 호스트 정보를 모두 인지하고 기록한다.

보통 다른 호스트와 통신이 필요할 때, 물리 네트워크 구간을 통해야 한다. 너무 어려움. 물리망을 마치 투명하게 만들 수 있다

=> 물리 어뎁터 기준 밑으로 물리망 (Underlay), 윗쪽은(Overlay)

=> Container들이 bridge network와 연동되어 요청을 직접 받는 것도 가능

=> VXLAN은 터널링의 표준?

=> Source / Destination을 지정할 수 있음!

*포트 설정 :

- EXPOSE의 정보를 통해서 HOST가 알아서 Container의 PORT를 찾아가게 된다.

- 외부 Client에서는 LB로 접근

- LB는 여러개 HOST로 연결 ( Port는 찾아서 자동 구성)

방법은 3가지 : 
1) -p <host port>:<container port>

2) -p <container port>

3) 호스트 머신에 동적으로 할당된 포트를 EXPOSE나 --expose를 사용하여 노출된 모든 포트에 매핑한다 : -P  

Kubernetes = 묶어서 관리하는 요소(Orchestration 도구)

Docker = Application 레벨에서만 생각

 

*Docker CP 명령어 

[root@host01-2 ~]# docker cp keen_newton:/etc/docker/registry/config.yml .
 

[root@host01-2 ~]# docker run -dp 80:80 -v $(pwd)/config.yml:/config.yml registry:2.5 config.yml
d60aad9dcefbd9f75511d176c51e65b9fdc4740f665aa98afed3e2e370de79cc
[root@host01-2 ~]# docker ps
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS                          NAMES
d60aad9dcefb        registry:2.5        "/entrypoint.sh conf…"   10 seconds ago      Up 9 seconds        0.0.0.0:80->80/tcp, 5000/tcp   flamboyant_joliot
[root@host01-2 ~]# docker exec -it d60aad9dcefb sh
/ # ls
bin            etc            media          run            tmp
config.yml     home           mnt            sbin           usr
dev            lib            proc           srv            var
entrypoint.sh  linuxrc        root           sys
/ # vi config.yml
/ # exit
[root@host01-2 ~]#
 

*Docker Compose : 

docker compose = 단일 호스트

docker swarm (클러스터 관리툴)= 멀티 호스트

compose와 swarm을 연동할 수 있게 됐다..

* 표준 : yaml을 통해서 host에 배포? CLI는 단순 호출

*Docker compose 설치 : 

[root@host01-2 docker]# curl -L https://github.com/docker/compose/releases/download/1.21.0/docker-compose-`uname -s`-`uname -m` -o /usr/local/bin/docker-compose
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100   617    0   617    0     0     93      0 --:--:--  0:00:06 --:--:--   150
100 10.3M  100 10.3M    0     0   374k      0  0:00:28  0:00:28 --:--:-- 1122k
[root@host01-2 docker]#
[root@host01-2 docker]# chmod +x /usr/local/bin/docker-compose
[root@host01-2 docker]# docker-compose version
docker-compose version 1.21.0, build 5920eb0
docker-py version: 3.2.1
CPython version: 3.6.5
OpenSSL version: OpenSSL 1.0.1t  3 May 2016
[root@host01-2 docker]#
 

*YARM 파일 예시 : 

- XML과 유사, space로 구분, Tab은 안됨!!

version: '3.3'
 
services:
   db:
     image: reg.cloud.com/mysql:5.7
     volumes:  #가지고 뜨는 볼륨
       - dbdata:/var/lib/mysql
     restart: always
     environment:
       MYSQL_ROOT_PASSWORD: somewordpress
       MYSQL_DATABASE: wordpress
       MYSQL_USER: wordpress
       MYSQL_PASSWORD: wordpress
 
   wordpress:
     depends_on: #시작 함수를 해준다(db 함수가 먼저 실행된다)
       - db
     image: reg.cloud.com/wordpress:latest
     ports:
       - "8000:80" #포트 매핑 
     restart: always
     environment:
       WORDPRESS_DB_HOST: db:3306
       WORDPRESS_DB_USER: wordpress
       WORDPRESS_DB_PASSWORD: wordpress
volumes:
    dbdata: #볼륨명

*yml 파일 실행으로 wordpress 설치(결국 yml 파일을 잘 구성하는것이 중요)

[root@host01-2 temp]# docker volume ls
DRIVER              VOLUME NAME
local               2042e79725f9ebcc220a00ec036065afe47f6a313c7fbc37424dc06707506024
local               3731b5e0372bf0b19e572f7022041069ef60631b68035fb044241a38f6de04de
local               4a35da8fe0f8f7855c92230679c18089d8734a66754c8e8523ac486a55cc4d05
local               5aaa3c1d276e0a539b0928437df457197be510c035cbfa8d34a7b7c345060335
local               6a37dd2b5eda64b880db3e122f3985e45bd249c94030d2db0d158691a45901eb
local               7177f41f8225923f8cde394fcd529b72ab9719a35fc1bd9723e2a6f2ab707681
local               7267f43dfed496a69277236002ab423079b871400ff68596856517e57291e7b3
local               9a8f8faa0acf42207fe6d8e6b24598edb2a3561616bf4f9abcc27295773ffa76
local               data
local               f4f24f0b97c0e0e3d739141827867affd43edd21b3667de33e7527a888b43f12
[root@host01-2 temp]# docker rm -rf volume
unknown shorthand flag: 'r' in -rf
See 'docker rm --help'.
[root@host01-2 temp]# docker rm -f volume
Error: No such container: volume
[root@host01-2 temp]# docker rm -f volume 2042e79725f9ebcc220a00ec036065afe47f6a313c7fbc37424dc06707506024 3731b5e0372bf0b19e572f7022041069ef60631b68035fb044241a38f6de04de
Error: No such container: volume
Error: No such container: 2042e79725f9ebcc220a00ec036065afe47f6a313c7fbc37424dc06707506024
Error: No such container: 3731b5e0372bf0b19e572f7022041069ef60631b68035fb044241a38f6de04de
[root@host01-2 temp]#
[root@host01-2 temp]#
[root@host01-2 temp]#
[root@host01-2 temp]#
[root@host01-2 temp]# docker-compose -f docker-compose.yml ^C
[root@host01-2 temp]# clear
[root@host01-2 temp]# ls
docker-compose.yml
[root@host01-2 temp]# docker-compose up -d
Creating network "temp_default" with the default driver
Creating volume "temp_dbdata" with default driver
Pulling db (reg.cloud.com/mysql:5.7)...
5.7: Pulling from mysql
Digest: sha256:a0423a7d021b7a7775f1d2db1014bd15fde029f538c1f8d97c9832aa4a25209f
Status: Downloaded newer image for reg.cloud.com/mysql:5.7
Pulling wordpress (reg.cloud.com/wordpress:latest)...
latest: Pulling from wordpress
85b1f47fba49: Already exists
d8204bc92725: Pull complete
92fc16bb18e4: Pull complete
31098e61b2ae: Pull complete
f6ae64bfd33d: Pull complete
003c1818b354: Pull complete
a6fd4aeb32ad: Pull complete
a094df7cedc1: Pull complete
e3bf6fc1a51d: Pull complete
ad235c260360: Pull complete
edbf48bcbd7e: Pull complete
fd6ae81d5745: Pull complete
69838fd876d6: Pull complete
3186ebffd72d: Pull complete
b24a415ea2c0: Pull complete
225bda14ea90: Pull complete
fc0ad3550a92: Pull complete
0e4600933a8c: Pull complete
Digest: sha256:5b3b36db3c19d5b8c6ded6facec4daac57fe2ea1879351a2e65ac8919cea37ce
Status: Downloaded newer image for reg.cloud.com/wordpress:latest
Creating temp_db_1 ... done
Creating temp_wordpress_1 ... done
[root@host01-2 temp]# docker-comose ps
-bash: docker-comose: command not found
[root@host01-2 temp]# docker-compose ps
      Name                    Command               State          Ports
--------------------------------------------------------------------------------
temp_db_1          docker-entrypoint.sh mysqld      Up      3306/tcp
temp_wordpress_1   docker-entrypoint.sh apach ...   Up      0.0.0.0:8000->80/tcp
[root@host01-2 temp]# docker network ls
NETWORK ID          NAME                DRIVER              SCOPE
76d13a20d92c        bridge              bridge              local
a4bddc4df10b        host                host                local
1e75b30aa8ac        isolated_nw         bridge              local
e9ef483dde2d        none                null                local
02e52b7344b7        temp_default        bridge              local
efe418b38219        test                bridge              local
[root@host01-2 temp]# docker volum ls
docker: 'volum' is not a docker command.
See 'docker --help'
[root@host01-2 temp]# docker volume ls
DRIVER              VOLUME NAME
local               2042e79725f9ebcc220a00ec036065afe47f6a313c7fbc37424dc06707506024
local               3731b5e0372bf0b19e572f7022041069ef60631b68035fb044241a38f6de04de
local               4a35da8fe0f8f7855c92230679c18089d8734a66754c8e8523ac486a55cc4d05
local               5aaa3c1d276e0a539b0928437df457197be510c035cbfa8d34a7b7c345060335
local               67e959ee45f5221450510cbd82e314be628275fdfc34729002ed667c026e94b8
local               6a37dd2b5eda64b880db3e122f3985e45bd249c94030d2db0d158691a45901eb
local               7177f41f8225923f8cde394fcd529b72ab9719a35fc1bd9723e2a6f2ab707681
local               7267f43dfed496a69277236002ab423079b871400ff68596856517e57291e7b3
local               9a8f8faa0acf42207fe6d8e6b24598edb2a3561616bf4f9abcc27295773ffa76
local               data
local               f4f24f0b97c0e0e3d739141827867affd43edd21b3667de33e7527a888b43f12
local               temp_dbdata
[root@host01-2 temp]# ls /var/lib/docker/volumse/lab_dbdata/_data/-l
ls: cannot access /var/lib/docker/volumse/lab_dbdata/_data/-l: No such file or directory
[root@host01-2 temp]# ls /var/lib/docker/volumse/lab_dbdata/_data/ -l
ls: cannot access /var/lib/docker/volumse/lab_dbdata/_data/: No such file or directory
[root@host01-2 temp]# ls /var/lib/docker/volumes/temp_dbdata/_data/ -l
total 188488
-rw-r-----. 1 polkitd ssh_keys       56 May 24 17:19 auto.cnf
-rw-------. 1 polkitd ssh_keys     1675 May 24 17:19 ca-key.pem
-rw-r--r--. 1 polkitd ssh_keys     1107 May 24 17:19 ca.pem
-rw-r--r--. 1 polkitd ssh_keys     1107 May 24 17:19 client-cert.pem
-rw-------. 1 polkitd ssh_keys     1679 May 24 17:19 client-key.pem
-rw-r-----. 1 polkitd ssh_keys     1321 May 24 17:19 ib_buffer_pool
-rw-r-----. 1 polkitd ssh_keys 79691776 May 24 17:21 ibdata1
-rw-r-----. 1 polkitd ssh_keys 50331648 May 24 17:21 ib_logfile0
-rw-r-----. 1 polkitd ssh_keys 50331648 May 24 17:19 ib_logfile1
-rw-r-----. 1 polkitd ssh_keys 12582912 May 24 17:21 ibtmp1
drwxr-x---. 2 polkitd ssh_keys     4096 May 24 17:19 mysql
drwxr-x---. 2 polkitd ssh_keys     8192 May 24 17:19 performance_schema
-rw-------. 1 polkitd ssh_keys     1679 May 24 17:19 private_key.pem
-rw-r--r--. 1 polkitd ssh_keys      451 May 24 17:19 public_key.pem
-rw-r--r--. 1 polkitd ssh_keys     1107 May 24 17:19 server-cert.pem
-rw-------. 1 polkitd ssh_keys     1675 May 24 17:19 server-key.pem
drwxr-x---. 2 polkitd ssh_keys     8192 May 24 17:19 sys
drwxr-x---. 2 polkitd ssh_keys     4096 May 24 17:21 wordpress
[root@host01-2 temp]# docker-compose down
Stopping temp_wordpress_1 ... done
Stopping temp_db_1        ... done
Removing temp_wordpress_1 ... done
Removing temp_db_1        ... done
Removing network temp_default
[root@host01-2 temp]# docker-compose ps
Name   Command   State   Ports
------------------------------
[root@host01-2 temp]# docker volume ls
DRIVER              VOLUME NAME
local               2042e79725f9ebcc220a00ec036065afe47f6a313c7fbc37424dc06707506024
local               3731b5e0372bf0b19e572f7022041069ef60631b68035fb044241a38f6de04de
local               4a35da8fe0f8f7855c92230679c18089d8734a66754c8e8523ac486a55cc4d05
local               5aaa3c1d276e0a539b0928437df457197be510c035cbfa8d34a7b7c345060335
local               67e959ee45f5221450510cbd82e314be628275fdfc34729002ed667c026e94b8
local               6a37dd2b5eda64b880db3e122f3985e45bd249c94030d2db0d158691a45901eb
local               7177f41f8225923f8cde394fcd529b72ab9719a35fc1bd9723e2a6f2ab707681
local               7267f43dfed496a69277236002ab423079b871400ff68596856517e57291e7b3
local               9a8f8faa0acf42207fe6d8e6b24598edb2a3561616bf4f9abcc27295773ffa76
local               data
local               f4f24f0b97c0e0e3d739141827867affd43edd21b3667de33e7527a888b43f12
local               temp_dbdata
[root@host01-2 temp]# docker-compose up -d
Creating network "temp_default" with the default driver
Creating temp_db_1 ... done
Creating temp_wordpress_1 ... done
[root@host01-2 temp]#